Plural-cell duct

Claim 2

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, and a barrier which is disposed within said passage and which occupies part of but less than all of a given cross section of said passAge and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier also effectively blocking access from the upper end of said collar to that portion of said potential passage which is located within one of said elongated cells, whereby said barrier effectively prevents access to said one of said elongated cells from a point above the upper end of said collar to a point within said one of said elongated cells, said barrier being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cells via said collar.

Claim 3

An enclosure for electrical conductors as claimed in claim 1 wherein said one wall of said elongated metal duct has an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, wherein said collar has a downwardly-inclined flange at that end thereof which is adjacent said one wall of said elongated metal duct, wherein said downwardly-inclined flange on said collar abuts said upwardly-inclined flange on said one wall of said elongated metal duct, wherein a locking element which is in addition to said collar engages both said collar and said one wall of said elongated metal duct to mechanically prevent movement of said collar inwardly of said opening in said one wall of said elongated metal duct, and wherein said locking element coacts with said collar and with said one wall of said elongated metal duct to mechanically and positively prevent circumferential movement of said collar relative to said one wall of said elongated metal duct.

Claim 4

An enclosure for electrical conductors as claimed in claim 1 wherein said one wall of said elongated metal duct has an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, wherein said collar has a downwardly-inclined flange at that end thereof which is adjacent said one wall of said elongated metal duct, wherein said downwardly-inclined flange on said collar extends outwardly and away from said end of said collar, wherein said downwardly-inclined flange on said collar is disposed inwardly of and abuts the inner surface of said upwardly-inclined flange on said one wall of said elongated metal duct to mechanically prevent separating movement of said collar away from said one wall of said elongated metal duct, wherein a locking element which is in addition to said collar engages both said collar and said one wall of said elongated metal duct to mechanically prevent movement of said collar inwardly of said opening in said one wall of said elongated metal duct, whereby said collar is mechanically locked against movement relative to said one wall of said elongated metal duct, and wherein said locking element coacts with said collar and with said one wall of said elongated metal duct to mechanically and positively prevent circumferential movement of said collar relative to said one wall of said elongated metal duct.

Claim 5

An enclosure for electrical conductors as claimed in claim 1 wherein said barrier has a portion thereof which is displaced laterally from said elongated partition in said elongated metal duct and which extends upwardly and which can be grasped to enable forces to be applied to said barrier which will remove said barrier from said passage to provide full and unobstructed access to said adjacent portions of said elongated cells via said collar.

Claim 6

An enclosure for electrical conductors as claimed in claim 1 wherein readily-frangible means releasably hold said barrier in said passage, and wherein said readily-frangible means can be broken by forces exerted on said barrier through the upper end of said collar to permit removal of said barrier from said passage.

Claim 7

An enclosure, for electrical conductors, which can be embedded within concrete and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, and a closure which is removably disposed within said collar and which removably occupies substantially all of a given cross section of said collar and which overlies said adjacent portions of said elongated cells to keep said concrete from entering and blocking said adjacent portions of said elongated cells, said closure normally coacting with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said closure being bodily and cleanly removable from said collar and from said passage without any fracturing of the wall of said collar to free said passage from all obstructions, said collar being a cold-formed portion of said one wall of said elongated metal duct so said collar and said one wall of said elongated metal duct are integral parts of the same piece of metal, whereby the combination of said collar and said one wall of said elongated metal duct is completely devoid of any line of cleavage between said collar and said one wall of said elongated metal duct.

Claim 8

An enclosure, for electrical conductors, which can be embedded within concrete and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, and a closure which is removably disposed within said collar and which removably occupies substantially all of a given cross section of said collar and which overlies said adjacent portions of said elongated cells to keep said concrete from entering and blocking said adjacent portions of said elongated cells, said closure normally coacting with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said closure being bodily and cleanly removable from said collar and from said passage without any fracturing of the wall of said collar to free said passage from all obstructions, said collar being a cold-formed portion of said one wall of said elongated metal duct so said collar and said one wall of said elongated metal duct are integral parts of the same piece of metal, whereby the combination of said collar and said one wall of said elongated metal duct is completely devoid of any line of cleavage between said collar and said one wall of said elongated metal duct.

Claim 9

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier also effectively blocking access from the upper end of said collar to that portion of said potential passage which is located within one of said elongated cells, whereby said barrier effectively prevents access to said one of said elongated cells from a point above the upper end of said collar to a point within said one of said elongated cells, said barrier being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cells via said collar, said one wall of said elongated metal duct having an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, said collar having a downwardly-inclined flange at that end thereof which is adjacent said one wall of said elongated metal duct, said downwardly-inclined flange on said collar abutting said upwardly-inclined flange on said one wall of said elongated metal duct, a locking element engaging said collar and extending outwardly from said collar to be embedded within said portion of said building to prevent peripheral shifting of said collar relative to said portion of said building or said one wall of said elongated metal duct, and said barrier being part of said locking element but being capable of being broken away from said locking element to free said cross section of said passage from all obstructions.

Claim 10

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier also effectively blocking access from the upper end of said collar to that portion of said potential passage which is located within one of said elongated cells, whereby said barrier effectively prevents access to said one of said elongated cells from a point above the upper end of said collar to a point within said one of said elongated cells, said barrier being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cells via said collar, said one wall of said elongated metal duct having an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, said collar having a downwardly-inclined flange at that end thereof which is adjacent said one wall of said elongated metal duct, said downwardly-inclined flange on said collar abutting said upwardly-inclined flange on said one wall of said elongated metal duct, a locking element engaging said collar and extending outwardly from said collar to be embedded within said portion of said building to prevent peripheral shifting of said collar relative to said portion of said building or said one wall of said elongated metal duct, and said barrier being part of said locking element but being capable of being broken away from said locking element to free said cross section of said passage from all obstructions.

Claim 11

An enclosure, for electrical conductors, which can be embedded within a portion of a building which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier also effectively blocking access from the upper end of said collar to that portion of said potential passage which is located within one of said elongated cells, whereby said barrier effectively prevents access to said one of said elongated cells from a point above the upper end of said collar to a point within said one of said elongated cells, said barrier being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cell via said collar, said one wall of said elongated metal duct having an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, said collar having a downwardly-inclined flange at that end thereof which is adjacent said one wall of said elongated metal duct, said downwardly-inclined flange on said collar abutting said upwardly-inclined flange on said one wall of said elongated metal duct, said downwardly-inclined flange on said collar having two spaced-apart slots therein, and a locking element extending through said spaced-apart slots in said downwardly-inclined flange on said collar and extending outwardly from said collar to be embedded within said portion of said building to prevent peripheral shifting of said collar relative to said portion of said building or said one wall of said elongated metal duct.

Claim 12

An enclosure, for electrical conductors, which can be embedded within a portion of a building which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier also effectively blocking access from the upper end of said collar to that portion of said potential passage which is located within one of said elongated cells, whereby said barrier effectively prevents access to said one of said elongated cells from a point above the upper end of said collar to a point within said one of said elongated cells, said barrier being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cell via said collar, said one wall of said elongated metal duct having an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, said collar having a downwardly-inclined flange at that end thereof which is adjacent said one wall of said elongated metal duct, said downwardly-inclined flange on said collar abutting said upwardly-inclined flange on said one wall of said elongated metal duct, said downwardly-inclined flange on said collar having two spaced-apart slots therein, and a locking element extending through said spaced-apart slots in said downwardly-inclined flange on said collar and extending outwardly from said collar to be embedded within said portion of said building to prevent peripheral shifting of said collar relative to said portion of said building or said one wall of said elongated metal duct.

Claim 13

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly disPlaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier also effectively blocking access from the upper end of said collar to that portion of said potential passage which is located within one of said elongated cells, whereby said barrier effectively prevents access to said one of said elongated cells from a point above the upper end of said collar to a point within said one of said elongated cells, said barrier being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cells via said collar, said one wall of said elongated metal duct having an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, said collar having a downwardly-inclined flange at that end thereof which is adjacent said one wall of said elongated metal duct, said downwardly-inclined flange on said collar abutting said upwardly-inclined flange on said one wall of said elongated metal duct, said downwardly-inclined flange on said collar having two spaced-apart slots therein, a locking element extending through said spaced-apart slots in said downwardly-inclined flange on said collar and extending outwardly from said collar to be embedded within said portion of said building to prevent peripheral shifting of said collar relative to said portion of said building or said one wall of said elongated metal duct, and said barrier being part of said locking element but being capable of being broken away from said locking element to free said cross section of said passage from all obstructions.

Claim 14

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly disPlaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier also effectively blocking access from the upper end of said collar to that portion of said potential passage which is located within one of said elongated cells, whereby said barrier effectively prevents access to said one of said elongated cells from a point above the upper end of said collar to a point within said one of said elongated cells, said barrier being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cells via said collar, said one wall of said elongated metal duct having an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, said collar having a downwardly-inclined flange at that end thereof which is adjacent said one wall of said elongated metal duct, said downwardly-inclined flange on said collar abutting said upwardly-inclined flange on said one wall of said elongated metal duct, said downwardly-inclined flange on said collar having two spaced-apart slots therein, a locking element extending through said spaced-apart slots in said downwardly-inclined flange on said collar and extending outwardly from said collar to be embedded within said portion of said building to prevent peripheral shifting of said collar relative to said portion of said building or said one wall of said elongated metal duct, and said barrier being part of said locking element but being capable of being broken away from said locking element to free said cross section of said passage from all obstructions.

Claim 15

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier also effectively blocking access from the upper end of said collar to that portion of said potential passage which is located within one of saiD elongated cells, whereby said barrier effectively prevents access to said one of said elongated cells from a point above the upper end of said collar to a point within said one of said elongated cells, said barrier being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cells via said collar, said one wall of said elongated metal duct having an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, said collar having a downwardly-inclined flange at that end thereof which is adjacent said one wall of said elongated metal duct, said downwardly-inclined flange on said collar abutting said upwardly-inclined flange on said one wall of said elongated metal duct, a locking element engaging said collar and extending outwardly from said collar to be embedded within said portion of said building to prevent peripheral shifting of said collar relative to said portion of said building or said one wall of said elongated metal duct, said barrier being part of said locking element, and said locking element having readily-frangible portions adjacent said barrier to enable said barrier to be cleanly broken away from said locking element to free said central area of said collar from all obstructions.

Claim 16

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier also effectively blocking access from the upper end of said collar to that portion of said potential passage which is located within one of saiD elongated cells, whereby said barrier effectively prevents access to said one of said elongated cells from a point above the upper end of said collar to a point within said one of said elongated cells, said barrier being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cells via said collar, said one wall of said elongated metal duct having an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, said collar having a downwardly-inclined flange at that end thereof which is adjacent said one wall of said elongated metal duct, said downwardly-inclined flange on said collar abutting said upwardly-inclined flange on said one wall of said elongated metal duct, a locking element engaging said collar and extending outwardly from said collar to be embedded within said portion of said building to prevent peripheral shifting of said collar relative to said portion of said building or said one wall of said elongated metal duct, said barrier being part of said locking element, and said locking element having readily-frangible portions adjacent said barrier to enable said barrier to be cleanly broken away from said locking element to free said central area of said collar from all obstructions.

Claim 17

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier also effectively blocking access from the upper end of said collar to that portion of said potential passage which is located within one of said elongated cells, whereby said barrier effectively prevents access to said one of said elongated cells from a point above the upper end of said collar to a point within said one of said elongated cells, said barrier being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cells via said collar, said barrier having a portion thereof aligned with and effectively acting as a continuation of said elongated partition within said elongated metal duct, and said barrier having a second portion thereof which is angularly displaced from the first said portion of said barrier and which overlies and effectively closes the exposed portion of said one of said elongated cells.

Claim 18

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier also effectively blocking access from the upper end of said collar to that portion of said potential passage which is located within one of said elongated cells, whereby said barrier effectively prevents access to said one of said elongated cells from a point above the upper end of said collar to a point within said one of said elongated cells, said barrier being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cells via said collar, said barrier having a portion thereof aligned with and effectively acting as a continuation of said elongated partition within said elongated metal duct, and said barrier having a second portion thereof which is angularly displaced from the first said portion of said barrier and which overlies and effectively closes the exposed portion of said one of said elongated cells.

Claim 19

An enclosure, for electrical conductors, which can be embedded within concrete and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which sUbdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, and opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a closure removably disposed within said collar to initially close said collar and thereby keep concrete which is poured around said elongated metal duct and around said collar from entering said elongated metal duct via said collar, said closure being removable to provide access to the interior of said collar, and a divider on said closure which is removable with said closure, said divider coacting with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells as long as said closure is disposed within said collar.

Claim 20

An enclosure, for electrical conductors, which can be embedded within concrete and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which sUbdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, and opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a closure removably disposed within said collar to initially close said collar and thereby keep concrete which is poured around said elongated metal duct and around said collar from entering said elongated metal duct via said collar, said closure being removable to provide access to the interior of said collar, and a divider on said closure which is removable with said closure, said divider coacting with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells as long as said closure is disposed within said collar.

Claim 21

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a divider which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said divider being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cells via said collar, said divider having one portion thereof aligned with and effectively acting as a continuation of said elongated partition within said elongated metal duct, further portions of said divider underlying said one wall of said elongated metal duct to help prevent accidental separation of said divider from said one wall of said elongated metal duct, and still further portions of said divider extending over and engaging the exposed edge of said elongated partition within said elongated metal duct to additionally help prevent accidental separation of said divider from said one wall of said elongated metal duct.

Claim 22

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a divider which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said divider being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cells via said collar, said divider having one portion thereof aligned with and effectively acting as a continuation of said elongated partition within said elongated metal duct, further portions of said divider underlying said one wall of said elongated metal duct to help prevent accidental separation of said divider from said one wall of said elongated metal duct, and still further portions of said divider extending over and engaging the exposed edge of said elongated partition within said elongated metal duct to additionally help prevent accidental separation of said divider from said one wall of said elongated metal duct.

Claim 23

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a divider which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said divider being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cells via said collar said divider having one portion thereof aligned with and effectively acting as a continuation of said elongated partition within said elongated metal duct, further portions of said divider underlying said one wall of said elongated metal duct to help prevent accidental separation of said divider from said one wall of said elongated metal duct, still further portions of said divider extending over and engaging the exposed edge of said elongated partition within said elongated metal duct to additionally help prevent accidental separation of said divider from said one wall of said elongated metal duct, said further portions of said divider being disposed at one face of said elongated partition within said elongated metal duct, said still further portions of said divider being disposed at the opposite face of said elongated partition within said elongated metal duct, and said divider being selectively securable to or removable from said elongated partition within said elongated metal duct by rotating said divider about said exposed edge of said elongated partition within said elongated metal duct.

Claim 24

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a divider which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said divider being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cells via said collar said divider having one portion thereof aligned with and effectively acting as a continuation of said elongated partition within said elongated metal duct, further portions of said divider underlying said one wall of said elongated metal duct to help prevent accidental separation of said divider from said one wall of said elongated metal duct, still further portions of said divider extending over and engaging the exposed edge of said elongated partition within said elongated metal duct to additionally help prevent accidental separation of said divider from said one wall of said elongated metal duct, said further portions of said divider being disposed at one face of said elongated partition within said elongated metal duct, said still further portions of said divider being disposed at the opposite face of said elongated partition within said elongated metal duct, and said divider being selectively securable to or removable from said elongated partition within said elongated metal duct by rotating said divider about said exposed edge of said elongated partition within said elongated metal duct.

Claim 25

An enclosure, for electrical conductors, which can be embedded within concrete and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, that end of said collar which is adjacent said one wall of said elongated metal duct having a slot therein, and a locking element which has a portion thereof extending through and projecting laterally outwardly beyond said slot in said end of said collar and overlying said one wall of said elongated metal duct, said locking element having said portion thereof adapted to be exposed to and adapted to be embedded by said concrete to prevent shifting of said locking element relative to said collar and to prevent rotation of said collar relative to said elongated metal duct after said concrete has been placed and permitted to set.

Claim 26

An enclosure, for electrical conductors, which can be embedded within concrete and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, that end of said collar which is adjacent said one wall of said elongated metal duct having a slot therein, and a locking element which has a portion thereof extending through and projecting laterally outwardly beyond said slot in said end of said collar and overlying said one wall of said elongated metal duct, said locking element having said portion thereof adapted to be exposed to and adapted to be embedded by said concrete to prevent shifting of said locking element relative to said collar and to prevent rotation of said collar relative to said elongated metal duct after said concrete has been placed and permitted to set.

Claim 27

An enclosure, for electrical conductors, which can be embedded within concrete and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge tHereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, a downwardly-inclined flange at that end of said collar which is adjacent said one wall of said elongated metal duct, a locking element which engages said collar and overlies said one wall of said elongated metal duct, said locking element having a portion thereof which is exposed to and which will be embedded by said concrete to prevent shifting of said locking element relative to said collar and also to prevent peripheral shifting of said collar relative to said concrete after said concrete has been placed and permitted to set, said downwardly-inclined flange on said end of said collar having a surface thereon which is adjacent a surface on said locking member, one of said surfaces having a slot therein to permit said locking member to extend both inwardly and outwardly of said downwardly-inclined flange on said collar, said upwardly-inclined flange on said one wall of said elongated metal duct having a further surface thereon which is adjacent a further surface on said locking member, one of said further surfaces having a slot therein to permit said locking member to extend both inwardly and outwardly of said upwardly-inclined flange on said one wall of said elongated metal duct, said surface on said downwardly-inclined flange on said collar being in register with said further surface on said upwardly-inclined flange on said one wall of said elongated metal duct, and said portion of said locking element being disposed outwardly beyond the first said and said further surfaces on said locking element and also being disposed outwardly beyond said surface on said downwardly inclined flange on said collar and said further surface on said upwardly-inclined flange on said one wall of said elongated metal duct.

Claim 28

An enclosure, for electrical conductors, which can be embedded within concrete and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge tHereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, a downwardly-inclined flange at that end of said collar which is adjacent said one wall of said elongated metal duct, a locking element which engages said collar and overlies said one wall of said elongated metal duct, said locking element having a portion thereof which is exposed to and which will be embedded by said concrete to prevent shifting of said locking element relative to said collar and also to prevent peripheral shifting of said collar relative to said concrete after said concrete has been placed and permitted to set, said downwardly-inclined flange on said end of said collar having a surface thereon which is adjacent a surface on said locking member, one of said surfaces having a slot therein to permit said locking member to extend both inwardly and outwardly of said downwardly-inclined flange on said collar, said upwardly-inclined flange on said one wall of said elongated metal duct having a further surface thereon which is adjacent a further surface on said locking member, one of said further surfaces having a slot therein to permit said locking member to extend both inwardly and outwardly of said upwardly-inclined flange on said one wall of said elongated metal duct, said surface on said downwardly-inclined flange on said collar being in register with said further surface on said upwardly-inclined flange on said one wall of said elongated metal duct, and said portion of said locking element being disposed outwardly beyond the first said and said further surfaces on said locking element and also being disposed outwardly beyond said surface on said downwardly inclined flange on said collar and said further surface on said upwardly-inclined flange on said one wall of said elongated metal duct.

Claim 29

An enclosure, for electrical conductors, which can be embedded within concrete and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, that end of said collar which is adjacent said one wall of said elongated metal duct having a slot therein, a locking element which has a portion thereof extending through and projecting laterally outwardly beyond said slot in said end of said one wall of said elongated metal duct, said locking element having said portion thereof adapted to be exposed to and adapted to be embedded by said concrete to prevent shifting of said locking element relative to said collar and to prevent rotation of said collar relative to said elongated metal duct after said concrete has been placed and permitted to set, a barrier supported on said locking element, and said barrier coacting with said elongated partition to isolate one of said elongated cells from the other of said elongated cells.

Claim 30

An enclosure, for electrical conductors, which can be embedded within concrete and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, that end of said collar which is adjacent said one wall of said elongated metal duct having a slot therein, a locking element which has a portion thereof extending through and projecting laterally outwardly beyond said slot in said end of said one wall of said elongated metal duct, said locking element having said portion thereof adapted to be exposed to and adapted to be embedded by said concrete to prevent shifting of said locking element relative to said collar and to prevent rotation of said collar relative to said elongated metal duct after said concrete has been placed and permitted to set, a barrier supported on said locking element, and said barrier coacting with said elongated partition to isolate one of said elongated cells from the other of said elongated cells.

Claim 31

An enclosure, for electrical conductors, which can be embedded within concrete and which comprises an elongated metal duct, an elongated partition within said elongated metal duct whiCh subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, that end of said collar which is adjacent said one wall of said elongated metal duct having a slot therein, a locking element which has a portion thereof extending through and projecting laterally outwardly beyond said slot in said end of said collar and overlying said one wall of said elongated metal duct, said locking element having said portion thereof adapted to be exposed to and adapted to be embedded by said concrete to prevent shifting of said locking element relative to said collar and to prevent rotation of said collar relative to said elongated metal duct after said concrete has been placed and permitted to set, a barrier supported on said locking element, said barrier coacting with said elongated partition to isolate one of said elongated cells from the other of said elongated cells, and said barrier being movable away from said elongated partition to provide access to said one elongated cell.

Claim 32

An enclosure, for electrical conductors, which can be embedded within concrete and which comprises an elongated metal duct, an elongated partition within said elongated metal duct whiCh subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, that end of said collar which is adjacent said one wall of said elongated metal duct having a slot therein, a locking element which has a portion thereof extending through and projecting laterally outwardly beyond said slot in said end of said collar and overlying said one wall of said elongated metal duct, said locking element having said portion thereof adapted to be exposed to and adapted to be embedded by said concrete to prevent shifting of said locking element relative to said collar and to prevent rotation of said collar relative to said elongated metal duct after said concrete has been placed and permitted to set, a barrier supported on said locking element, said barrier coacting with said elongated partition to isolate one of said elongated cells from the other of said elongated cells, and said barrier being movable away from said elongated partition to provide access to said one elongated cell.

Claim 33

An enclosure, for electrical conductors, which can be embedded within concrete and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, that end of said collar which is adjacent said one wall of said elongated metal duct having a slot therein, a locking element which has a portion thereof extending through and projecting laterally outwardly beyond said slot in said end of said collar and overlying said one wall of said elongated metal duct, said locking element having said portion thereof adapted to be exposed to and adapted to be embedded by said concrete to prevent shifting of said locking element relative to said collar and to prevent rotation of said collar relative to said elongated metal duct after said concrete has been placed and permitted to set, a barrier which is part of said locking member, said barrier coacting with said elongated partition to isolate one of said elongated cells from the other of said elongated cells, said locking member having readily-frangible portions adjacent said barrier, and said readily-frangible portions of said locking member being capable of being broken to separate said barrier from said locking member to provide access to said one elongated cell.

Claim 34

An enclosure, for electrical conductors, which can be embedded within concrete and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, an upwardly-inclined flange that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct and away from said elongated partition, that end of said collar which is adjacent said one wall of said elongated metal duct having a slot therein, a locking element which has a portion thereof extending through and projecting laterally outwardly beyond said slot in said end of said collar and overlying said one wall of said elongated metal duct, said locking element having said portion thereof adapted to be exposed to and adapted to be embedded by said concrete to prevent shifting of said locking element relative to said collar and to prevent rotation of said collar relative to said elongated metal duct after said concrete has been placed and permitted to set, a barrier which is part of said locking member, said barrier coacting with said elongated partition to isolate one of said elongated cells from the other of said elongated cells, said locking member having readily-frangible portions adjacent said barrier, and said readily-frangible portions of said locking member being capable of being broken to separate said barrier from said locking member to provide access to said one elongated cell.

Claim 35

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct whIch exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, and a barrier which is disposed within said passage and which occupies at least a part of the cross-section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier effectively blocking access from the upper end of said collar to that portion of said potential passage which is located within one of said elongated cells, whereby said barrier effectively prevents access to said one of said elongated cells from a point above the upper end of said collar to a point within said one of said elongated cells, said barrier and said elongated partition having interacting surfaces thereon which enable said barrier to be supported by said elongated partition.

Claim 36

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct whIch exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, and a barrier which is disposed within said passage and which occupies at least a part of the cross-section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier effectively blocking access from the upper end of said collar to that portion of said potential passage which is located within one of said elongated cells, whereby said barrier effectively prevents access to said one of said elongated cells from a point above the upper end of said collar to a point within said one of said elongated cells, said barrier and said elongated partition having interacting surfaces thereon which enable said barrier to be supported by said elongated partition.

Claim 37

An enclosure for electrical conductors as claimed in claim 20 wherein said barrier is removable from said elongated partition without any injury to or impairment of said collar or of said elongated partition, and wherein said barrier is removable from said elongated partition and can be withdrawn through the upper end of said collar to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cells via said collar.

Claim 38

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier being supported by said elongated partition, said barrier having a portion which engages and grips one side of said elongated partition, and said barrier having a further portion which engages and grips the opposite side of said elongated partition.

Claim 39

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier being supported by said elongated partition, said barrier having a portion which engages and grips one side of said elongated partition, and said barrier having a further portion which engages and grips the opposite side of said elongated partition.

Claim 40

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and whIch extends through said collar, a divider which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said divider and said elongated partition having interacting surfaces thereon which enable said divider to be supported by said elongated partition, and said divider having portions which underlie said one wall of said elongated metal duct to keep said divider from being accidentally separated from said elongated partition.

Claim 41

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and whIch extends through said collar, a divider which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said divider and said elongated partition having interacting surfaces thereon which enable said divider to be supported by said elongated partition, and said divider having portions which underlie said one wall of said elongated metal duct to keep said divider from being accidentally separated from said elongated partition.

Claim 42

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier being supported by said elongated partition, said barrier having one portion thereof aligned with and effectively acting as a continuation of said elongated partition within said elongated metal duct, and said barrier having a second portion thereof which is angularly displaced from the first said portion of said barrier and which overlies and effectively closes the exposed portion of said one of said elongated cells.

Claim 43

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier being supported by said elongated partition, said barrier having one portion thereof aligned with and effectively acting as a continuation of said elongated partition within said elongated metal duct, and said barrier having a second portion thereof which is angularly displaced from the first said portion of said barrier and which overlies and effectively closes the exposed portion of said one of said elongated cells.

Claim 44

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an opening in one wall of said elongated metal duct, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, an ear at the interior of said collar, an opening in the wall of said collar which is adjacent said ear and which has essentially the same configuration as said ear, said ear and said opening being adjacent that end of said collar which extends away from said one wall of said elongated metal duct, and a cup-shaped closure which has a generally-cylindrical portion and a web-like portion, said cup-shaped closure being disposed within said end of said collar which extends away from said one wall of said elongated metal duct, said web-like portion of said cup-shaped closure being adjacent said ear and being limited against movement inwardly of said collar by said ear, said generally-cylindrical portion of said cup-shaped closure being adjacent and effectively closing said opening in said wall of said collar, whereby said cup-shaped closure can effectively keep concrete which is poured around said elongated metal duct and around said collar from entering said elongated metal duct via said collar.

Claim 45

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an opening in one wall of said elongated metal duct, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, an ear at the interior of said collar, an opening in the wall of said collar which is adjacent said ear and which has essentially the same configuration as said ear, said ear and said opening being adjacent that end of said collar which extends away from said one wall of said elongated metal duct, and a cup-shaped closure which has a generally-cylindrical portion and a web-like portion, said cup-shaped closure being disposed within said end of said collar which extends away from said one wall of said elongated metal duct, said web-like portion of said cup-shaped closure being adjacent said ear and being limited against movement inwardly of said collar by said ear, said generally-cylindrical portion of said cup-shaped closure being adjacent and effectively closing said opening in said wall of said collar, whereby said cup-shaped closure can effectively keep concrete which is poured around said elongated metal duct and around said collar from entering said elongated metal duct via said collar.

Claim 46

An enclosure for electrical conductors as claimed in claim 25 wherein said cup-shaped closure is removable from said end of said collar which extends away from said one wall of said elongated metal duct to provide access to the interior of said collar and also to provide access to said ear.

Claim 47

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an opening in one wall of saId elongated metal duct, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, an ear at the interior of said collar which extends inwardly of said collar, said ear having an opening therein which is generally parallel to the axis of said collar and which has a portion thereof immediately adjacent the inner surface of said collar, a support for an electrical fitting which is securable to said collar by a screw extending through said opening in said ear, the thread of said screw biting into that portion of said inner surface of said collar which is adjacent said opening in said ear as said screw passes through said ear to secure said support in assembled relation with said collar, the biting of said thread of said screw into said portion of said inner surface of said collar providing effective electrical grounding of said support to said collar.

Claim 48

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an opening in one wall of saId elongated metal duct, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, an ear at the interior of said collar which extends inwardly of said collar, said ear having an opening therein which is generally parallel to the axis of said collar and which has a portion thereof immediately adjacent the inner surface of said collar, a support for an electrical fitting which is securable to said collar by a screw extending through said opening in said ear, the thread of said screw biting into that portion of said inner surface of said collar which is adjacent said opening in said ear as said screw passes through said ear to secure said support in assembled relation with said collar, the biting of said thread of said screw into said portion of said inner surface of said collar providing effective electrical grounding of said support to said collar.

Claim 49

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a support for an electrical fitting which is securable to said collar, and a divider which is carried by said support and which extends downwardly through said collar to a point adjacent said elongated partition within said elongated metal duct, said divider having a fixed portion which is held stationary relative to said support, said divider having a slidable portion which is movable relative to said stationary portion of said divider and relative to said support and said collar and said elongated partition within said elongated metal duct, said stationary portion of said divider being secured to said support and said support being secured to said collar so said slidable portion of said divider is aligned with and can effectively act as a continuation of said elongated partition within said elongated metal duct, said divider having means securing said slidable portion of said divider to said stationary portion of said divider but permitting said slidable portion of said divider to be moved toward and to engage said elongated partition within said elongated metal duct, said divider being adapted to accommodate variations in the distance between said collar and said support which are caused by different thicknesses of said portion of said building.

Claim 50

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a support for an electrical fitting which is securable to said collar, and a divider which is carried by said support and which extends downwardly through said collar to a point adjacent said elongated partition within said elongated metal duct, said divider having a fixed portion which is held stationary relative to said support, said divider having a slidable portion which is movable relative to said stationary portion of said divider and relative to said support and said collar and said elongated partition within said elongated metal duct, said stationary portion of said divider being secured to said support and said support being secured to said collar so said slidable portion of said divider is aligned with and can effectively act as a continuation of said elongated partition within said elongated metal duct, said divider having means securing said slidable portion of said divider to said stationary portion of said divider but permitting said slidable portion of said divider to be moved toward and to engage said elongated partition within said elongated metal duct, said divider being adapted to accommodate variations in the distance between said collar and said support which are caused by different thicknesses of said portion of said building.

Claim 51

An enclosure for electrical conductors as claimed in claim 28 wherein said stationary portion of said divider has laterally-extending areas thereof telescoped into and tightly held by slots in the walls of said support.

Claim 52

An enclosure for electrical conductors as claimed in claim 28 wherein said means renders the engagement between said slidable portion of said divider and said stationary portion of said divider loose enough to permit said slidable portion of said divider to respond to its own weight to move relative to said stationary portion of said divider and said collar and said elongated partition within said elongated metal duct, whereby said slidable portion of said divider will automatically move into engagement with said elongated partition within said elongated metal duct.

Claim 53

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition with said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier also effectively blocking access from the upper end of said collar to that portion of said potential passage which is located within one of said elongated cells, whereby said barrier effectively prevents access to said one of said elongated cells from a point above the upper end of said collar to a point within said one of said elongated cells, said barrier being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cells via said collar, said barrier having one portion thereof aligned with and effectively acting as a continuation of said elongated partition within said elongated metal duct, said barrier having a second portion thereof which is angularly displaced from the first said portion of said barrier and which overlies and effectively closes the exposed portion of said one of said elongated cells, readily-frangible means holding said barrier in said passage, and said readily-frangible means being capable of being broken to permit removal of said barrier from said passage.

Claim 54

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition with said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier also effectively blocking access from the upper end of said collar to that portion of said potential passage which is located within one of said elongated cells, whereby said barrier effectively prevents access to said one of said elongated cells from a point above the upper end of said collar to a point within said one of said elongated cells, said barrier being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstructed access to said adjacent portions of said elongated cells via said collar, said barrier having one portion thereof aligned with and effectively acting as a continuation of said elongated partition within said elongated metal duct, said barrier having a second portion thereof which is angularly displaced from the first said portion of said barrier and which overlies and effectively closes the exposed portion of said one of said elongated cells, readily-frangible means holding said barrier in said passage, and said readily-frangible means being capable of being broken to permit removal of said barrier from said passage.

Claim 55

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, that end of said collar which is adjacent said opening in said one wall of said elongated metal duct having a surface thereon, a locking element which has a surface thereon that is adjacent said surface on said end of said collar, one of said surfaces having a slot therein to permit said locking member to extend both inwardly and outwardly of said one end of said collar, said locking member having a portion thereof that extends outwardly beyond said end of said collar and overlies said one wall of said elongated metal duct, said portion of said locking element being adapted to be engaged by and to be embedded within said portion of said building to help prevent rotation of said collar relative to said one wall of said elongated metal duct, and a Barrier which is supported by said locking member and which is disposed within said passage and which coacts with said elongated partition to isolate one of said elongated cells from the other of said elongated cells, said barrier being separable from said locking member to permit removal of said barrier from said passage.

Claim 56

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, that end of said collar which is adjacent said opening in said one wall of said elongated metal duct having a surface thereon, a locking element which has a surface thereon that is adjacent said surface on said end of said collar, one of said surfaces having a slot therein to permit said locking member to extend both inwardly and outwardly of said one end of said collar, said locking member having a portion thereof that extends outwardly beyond said end of said collar and overlies said one wall of said elongated metal duct, said portion of said locking element being adapted to be engaged by and to be embedded within said portion of said building to help prevent rotation of said collar relative to said one wall of said elongated metal duct, and a Barrier which is supported by said locking member and which is disposed within said passage and which coacts with said elongated partition to isolate one of said elongated cells from the other of said elongated cells, said barrier being separable from said locking member to permit removal of said barrier from said passage.

Claim 57

An enclosure for electrical conductors as claimed in claim 32 wherein said locking member has readily-frangible portions adjacent said barrier, and wherein said readily-frangible portions of said locking member can be broken away to free said barrier from said locking element and thus from said passage.

Claim 58

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, one wall of said elongated metal duct having an opening therein, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, an upwardly-inclined flange on said one wall of said elongated metal duct that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct, a downwardly-inclined flange at that end of said collar which is adjacent said one wall of said elongated metal duct, and an abutment on said collar which is spaced a short distance from said downwardly-inclined flange on said collar, said downwardly-inclined flange on said collar being disposed within and abutting the inner surface of said upwardly-inclined flange on said one wall of said elongated metal duct to mechanically prevent separating movement of said collar away from said one wall of said elongated metal duct, said abutment on said collar engaging the upper surface of said upwardly-inclined flange on said one wall of said elongated metal duct to mechanically prevent movement of said collar inwardly of said opening in said one wall of said elongated metal duct.

Claim 59

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, one wall of said elongated metal duct having an opening therein, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, an upwardly-inclined flange on said one wall of said elongated metal duct that surrounds said opening and that extends outwardly from said one wall of said elongated metal duct, a downwardly-inclined flange at that end of said collar which is adjacent said one wall of said elongated metal duct, and an abutment on said collar which is spaced a short distance from said downwardly-inclined flange on said collar, said downwardly-inclined flange on said collar being disposed within and abutting the inner surface of said upwardly-inclined flange on said one wall of said elongated metal duct to mechanically prevent separating movement of said collar away from said one wall of said elongated metal duct, said abutment on said collar engaging the upper surface of said upwardly-inclined flange on said one wall of said elongated metal duct to mechanically prevent movement of said collar inwardly of said opening in said one wall of said elongated metal duct.

Claim 60

An enclosure for electrical conductors as claimed in claim 34 wherein a locking element engages said collar and said one wall of said elongated metal duct to additionally prevent movement of said collar inwardly of said opening in said one wall of said elongated metal duct.

Claim 61

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar fixedly secured to said one wall of said elongated metal duct and surrounding said opening and extending away from said one wall of said elongated metal duct, a flush-type support for an electrical fitting which is securable to that end of said collar which extends away from said one wall of said elongated metal duct, removable means initially disposed within said collar to coact with said elongated partition within said elongated metal duct to provide initial isolation of one of said elongated cells from an adjacent elongated cell, said removable means being readily removable from said collar without any fracturing of the wall of said collar to expose both of said elongated cells to flush-type support, said flush-type support being dimensioned to extend laterally outwardly beyond the sides of said collar to overlie those parts of the surface of said portion of said building in which said enclosure is embedded, said collar having the central portions of the middle and of said end thereof effectively free of permanent obstructions so the removal of said removable means will enable said middle and said end of said collar to accommodate said electrical fitting, said flush-type support being adapted to hold a portion of said electrical fitting within said end of said collar, and elongated fasteners adapted to extend from said flush-type support to said collar to hold said flush-type support against movement relative to said collar although said portion of said building spaces said flush-type support outwardly from said end of said collar.

Claim 62

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar fixedly secured to said one wall of said elongated metal duct and surrounding said opening and extending away from said one wall of said elongated metal duct, a flush-type support for an electrical fitting which is securable to that end of said collar which extends away from said one wall of said elongated metal duct, removable means initially disposed within said collar to coact with said elongated partition within said elongated metal duct to provide initial isolation of one of said elongated cells from an adjacent elongated cell, said removable means being readily removable from said collar without any fracturing of the wall of said collar to expose both of said elongated cells to flush-type support, said flush-type support being dimensioned to extend laterally outwardly beyond the sides of said collar to overlie those parts of the surface of said portion of said building in which said enclosure is embedded, said collar having the central portions of the middle and of said end thereof effectively free of permanent obstructions so the removal of said removable means will enable said middle and said end of said collar to accommodate said electrical fitting, said flush-type support being adapted to hold a portion of said electrical fitting within said end of said collar, and elongated fasteners adapted to extend from said flush-type support to said collar to hold said flush-type support against movement relative to said collar although said portion of said building spaces said flush-type support outwardly from said end of said collar.

Claim 63

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar fixedly secured to said one wall of said elongated metal duct and surrounding said opening and extending away from said one wall of said elongated metal duct, a flush-type support for an electrical fitting which is securable to that end of said collar which extends away from said one wall of said elongated metal duct, said collar having the central portions of the middle and of said end thereof effectively free of permanent obstructions to enable said middle and said end of said collar to accommodate said electrical fitting, said flush-type support being adapted to hold a portion of said electrical fitting within said end of said collar but out of engagement with said elongated partition within said elongated metal duct, and isolating means adjacent that end of said collar which is adjacent said one wall of said elongated metal duct, said isolating means being spaced from and not interfering with said flush-type support or said electrical fitting, said isolating means effectively coacting with said elongated partition within said elongated metal duct to isolate one of said elongated cells within said elongated metal duct from an adjacent elongated cell within said elongated metal duct.

Claim 64

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar fixedly secured to said one wall of said elongated metal duct and surrounding said opening and extending away from said one wall of said elongated metal duct, a flush-type support for an electrical fitting which is securable to that end of said collar which extends away from said one wall of said elongated metal duct, said collar having the central portions of the middle and of said end thereof effectively free of permanent obstructions to enable said middle and said end of said collar to accommodate said electrical fitting, said flush-type support being adapted to hold a portion of said electrical fitting within said end of said collar but out of engagement with said elongated partition within said elongated metal duct, and isolating means adjacent that end of said collar which is adjacent said one wall of said elongated metal duct, said isolating means being spaced from and not interfering with said flush-type support or said electrical fitting, said isolating means effectively coacting with said elongated partition within said elongated metal duct to isolate one of said elongated cells within said elongated metal duct from an adjacent elongated cell within said elongated metal duct.

Claim 65

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier also effectively blocking access from the upper end of said collar to that portion of said potential passage which is located within one of said elongated cells, whereby said barrier effectively prevents access to said one of said elongated cells from a point above the upper end of said collar to a point within said one of said elongated cells, said barrier being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstRucted access to said adjacent portions of said elongated cells via said collar, said barrier having a portion thereof aligned with and effectively acting as a continuation of said elongated partition within said elongated metal duct, said barrier having a second portion thereof which is angularly displaced from the first said portion of said barrier and which overlies and effectively closes the exposed portion of said one of said elongated cells, said second portion of said barrier having a part thereof which is spaced from the adjacent portion of the interior of said collar by a distance which enables the blade of a screwdriver to be inserted between said part of said second portion of said barrier and said adjacent portion of said interior of said collar, and said second portion of said barrier inclining upwardly from said first said portion of said barrier toward said adjacent portion of said interior of said collar, whereby twisting of said blade of said screwdriver can tilt said second portion of said barrier upwardly toward the upper end of said collar.

Claim 66

An enclosure, for electrical conductors, which can be embedded within a portion of a building and which comprises an elongated metal duct, an elongated partition within said elongated metal duct which subdivides the interior of said elongated metal duct into a plurality of elongated cells, said elongated partition being angularly displaced from the plane of one wall of said elongated metal duct and having one edge thereof adjacent to said one wall, an opening in said one wall of said elongated metal duct which exposes a portion of said one edge of said elongated partition and also exposes adjacent portions of said elongated cells, a collar surrounding said opening and extending away from said one wall of said elongated metal duct, said collar coacting with said opening to define a potential passage which has portions thereof located within said adjacent portions of said elongated cells and which extends through said collar, a barrier which is disposed within said passage and which occupies at least a part of the cross section of said passage and which coacts with said elongated partition within said elongated metal duct to isolate one of said elongated cells from the other of said elongated cells, said barrier also effectively blocking access from the upper end of said collar to that portion of said potential passage which is located within one of said elongated cells, whereby said barrier effectively prevents access to said one of said elongated cells from a point above the upper end of said collar to a point within said one of said elongated cells, said barrier being removable from said passage without any fracturing of the wall of said collar and being bodily and cleanly removable from said passage to free said cross section of said passage from all obstructions, and thereby provide full and unobstRucted access to said adjacent portions of said elongated cells via said collar, said barrier having a portion thereof aligned with and effectively acting as a continuation of said elongated partition within said elongated metal duct, said barrier having a second portion thereof which is angularly displaced from the first said portion of said barrier and which overlies and effectively closes the exposed portion of said one of said elongated cells, said second portion of said barrier having a part thereof which is spaced from the adjacent portion of the interior of said collar by a distance which enables the blade of a screwdriver to be inserted between said part of said second portion of said barrier and said adjacent portion of said interior of said collar, and said second portion of said barrier inclining upwardly from said first said portion of said barrier toward said adjacent portion of said interior of said collar, whereby twisting of said blade of said screwdriver can tilt said second portion of said barrier upwardly toward the upper end of said collar.