US3871729A — System for the installation of electric wiring in…

Claim 1

Independent Claim 181 words

A contact plug including a housing comprising an elongated bottom member having apertures extending therethrough in a first direction contact pins slidably mounted in said apertures and extending from said housing, means for biasing said contact pins so that they normally extend from said housing, longitudinal upstanding ribs extending along one surface of said bottoM member and defining grooves extending along said housing in a second direction and intersecting said apertures, and electrical conductors extending along said grooves and connected to said contact pins and an elongated cover member for enclosing said ribs, grooves, conductors, and one end of said apertures and including means against which said biasing means may react when urging said contact pins out of said housing, means for releasably attaching said bottom member thereto, and means for releasably attaching said housing behind a pair of ribs within an elongated cable duct having a width dimension which is only wider than the width of said housing by an amount sufficient to allow said attaching means to cooperate with the ribs when said housing is pushed into the duct.

Claim 2

Dependent Claim 181 words

A contact plug including a housing comprising an elongated bottom member having apertures extending therethrough in a first direction contact pins slidably mounted in said apertures and extending from said housing, means for biasing said contact pins so that they normally extend from said housing, longitudinal upstanding ribs extending along one surface of said bottoM member and defining grooves extending along said housing in a second direction and intersecting said apertures, and electrical conductors extending along said grooves and connected to said contact pins and an elongated cover member for enclosing said ribs, grooves, conductors, and one end of said apertures and including means against which said biasing means may react when urging said contact pins out of said housing, means for releasably attaching said bottom member thereto, and means for releasably attaching said housing behind a pair of ribs within an elongated cable duct having a width dimension which is only wider than the width of said housing by an amount sufficient to allow said attaching means to cooperate with the ribs when said housing is pushed into the duct.

Claim 3

Dependent Claim 18 words

The contact plug of claim 1, characterized in that said grooves extend to both sides of said apertures.

Claim 4

Dependent Claim 42 words

The contact plug of claim 1 characterized in that the contact pins are provided with a collar located within the housing, said biasing means bearing on said collar, and said collar being adapted to be connected to one of said electrical conductors.

Claim 5

Dependent Claim 22 words

The contact plug of claim 1, characterized in that said contact pins are formed by the offset extremities of said connecting conductors.

Claim 6

Dependent Claim 30 words

The contact plug of claim 1, characterized by means provided on one of said sections for fixing and electrically connecting to said pins an element such as a lamp holder.

Claim 7

Dependent Claim 58 words

The contact plug of claim 5, characterized in that one of said sections is provided with a chamber in which the head of a bolt may be fixedly mounted, and into which an opening provided in said one of said sections extends, the bolt shaft fitting through said opening when the head thereof is located in said chamber.

Claim 8

Dependent Claim 210 words

An electrical wiring system comprising a cable duct of substantially U-shaped cross-section having a first inwardly directed rib means near at least one free edge of said duct and a second inwardly directed rib means parallel to said first rib means, flat cable means held within said duct by said second rib means and having an insulating base, a plurality of apertures extending substantially parallel and through said base, means providing access to each of said apertures from one said base, and uninsulated conductor means extending axially along each of said apertures, and connector means for creating an electrical circuit to utilize power being transmitted through said conductors comprising a housing having means thereon for releasably fixing said connector means within said duct by cooperation of said fixing means with said first rib means, carrier means movably mounted in said housing, a plurality of contact pin means mounted on said carrier means and extending from said housing, and means in said housing for biasing said carrier means such that each of said pin means, extends through one of said access means and into contact with a conductor therein such that the axisintersecting end of each said pin means is held in contact with its associated conductor with a predetermined force.

Claim 9

Dependent Claim 210 words

An electrical wiring system comprising a cable duct of substantially U-shaped cross-section having a first inwardly directed rib means near at least one free edge of said duct and a second inwardly directed rib means parallel to said first rib means, flat cable means held within said duct by said second rib means and having an insulating base, a plurality of apertures extending substantially parallel and through said base, means providing access to each of said apertures from one said base, and uninsulated conductor means extending axially along each of said apertures, and connector means for creating an electrical circuit to utilize power being transmitted through said conductors comprising a housing having means thereon for releasably fixing said connector means within said duct by cooperation of said fixing means with said first rib means, carrier means movably mounted in said housing, a plurality of contact pin means mounted on said carrier means and extending from said housing, and means in said housing for biasing said carrier means such that each of said pin means, extends through one of said access means and into contact with a conductor therein such that the axisintersecting end of each said pin means is held in contact with its associated conductor with a predetermined force.

Claim 10

Dependent Claim 33 words

The system of claim 7 wherein said access providing means comprises a plurality of relatively narrow slits in said base, each extending from one of said apertures to a surface of said base.

Claim 11

Dependent Claim 30 words

The system of claim 7 wherein said pin means each have an elongated cross-section terminating in a relatively flat end face for contacting a conductor across a predetermined surface area.

Claim 12

Dependent Claim 37 words

The system of claim 7 wherein said carrier means includes means for mounting said plurality of contact pin means including means for movably mounting at least one of said contact pin means relative to said carrier means.

Claim 13

Dependent Claim 59 words

The system of claim 7 wherein at least one of said pin contact means is longer than the other pin contact means, and including means for biasing sAid at least one pin contact means into a position of maximum extension from said housing while allowing at least partial retraction thereof when said connector is operatively connected in said duct.

Claim 14

Dependent Claim 21 words

The system of claim 7 wherein said releasable fixing means comprises locking cam means mounted on the exterior of said housing.

Claim 15

Dependent Claim 40 words

The system of claim 12 wherein said housing further includes incision means operatively associated with said locking cam means to produce resiliency in said housing and thus allow movement of said locking cam means relative to said first rib means.

Claim 16

Dependent Claim 43 words

The system of claim 7 wherein said housing includes groove means in at least two exterior sides thereof and said releasable fixing means comprises brace means mounted in said groove means and extending outwardly beyond the inner dimension of said first rib means.

Claim 17

Dependent Claim 25 words

The system of claim 7 including means for preventing said connector means for being improperly installed in said cable duct relative to said cable means.

Claim 18

Dependent Claim 29 words

The system of claim 7 wherein the thickness of said connector is so proportioned as to not extend beyond the free edges of said duct when operatively positioned therein.

Claim 19

Dependent Claim 128 words

An electrical connector for use with a cable duct comprising a housing having a generally thin configuration such as to fit substantially completely within the cable duct, carrier means movably mounted in said housing, a plurality of first contact pins fixedly mounted on said carrier means and extending from said housing, a second contact pin movably mounted on said carrier means and normally extending from, said housing a greater distance than said first contact pins, and biasing means for urging said first and second contact pins toward their extended positions while allowing at least partial retraction thereof relative to said housing when said connector is operatively positioned within a duct and while allowing at least partial retraction of said second contact pin relative to said first contact pins.

Claim 20

Dependent Claim 128 words

An electrical connector for use with a cable duct comprising a housing having a generally thin configuration such as to fit substantially completely within the cable duct, carrier means movably mounted in said housing, a plurality of first contact pins fixedly mounted on said carrier means and extending from said housing, a second contact pin movably mounted on said carrier means and normally extending from, said housing a greater distance than said first contact pins, and biasing means for urging said first and second contact pins toward their extended positions while allowing at least partial retraction thereof relative to said housing when said connector is operatively positioned within a duct and while allowing at least partial retraction of said second contact pin relative to said first contact pins.

Claim 21

Dependent Claim 24 words

The electrical connector of claim 17 including means formed integral with the exterior of said housing for releasably fixing said connector within a duct.

Claim 22

Dependent Claim 30 words

The electrical connector of claim 18 including brace means removably mounted in said fixing means for cooperation with means in a cable duct to hold said connector in place therein.

Claim 23

Dependent Claim 59 words

The electrical connector of claim 18 wherein said fixing means comprises cam means on opposed sides of said housing for cooperation with holding means in a cable duct and weakend areas formed in the walls of said housing so that said cam means are resiliently cooperable with the cable duct holding means for installation and removal of said connector

Claim 24

Dependent Claim 20 words

The connector of claim 18 wherein said fixing means comprises gripping means resiliently formed on opposed walls of said housing.

Claim 25

Dependent Claim 42 words

The electrical connector of claim 17 including carrier means movably mounted in said housing and in which said first and second contact pins are mounted, and wherein said biasing means urges said carrier means in a first direction relative to said housing.

Claim 26

Dependent Claim 25 words

The electrical connector of claim 22 including second biasing means for urging said second contact pin in said first direction relative to said carrier means.

Claim 27

Independent Claim 343 words

A system for the installation of electric wiring in a building, comprising: a profiled cable duct with a substantially U-shaped cross-section provide with a first set of inwardly directed ribs near the free edges of said duct, and with a second set of inwardly directed ribs parallel to and below said first set; a flat cable to be clamped behind said second set of ribs of said cable duct, said cable comprising an insulation base with a plurality of parallel longitudinal grooves opening in one surface of said base by means of narrow slots, bare conductors arranged in said grooves and being Accessible from the outside of said cable through said narrow slots; and a connector adapted to be clamped behind said first set of ribs of said cable duct and having a housing with a flat bottom wall, a carrier means movably mounted in said housing, a plurlity of contact pins mounted on said carrier means and projecting from said bottom wall, said pins each being arranged to fit in a corresponding slot of said cable when the connector is clamped into said cable duct, said bottom wall then being substantially parallel to the groove surface of said cable, said carrier means being resiliently supported in said connector housing so as to be movable in the direction in which said contact pins extend, said pins having a flat, rectangular cross-section, the smaller dimension being substantially equal to the width of a slot in the cable base, the longer dimension being directed in the longitudinal direction of the slot in question when the connector is inserted in said duct, the end face of each pin being substantially flat and being adapted to contact the surface of a bare conductor in the cable groove in question, the surface area of said end face being sufficiently large for conducting the envisaged current and providing, at the spring pressure exerted on said pin, a sufficiently small and substantially constant contact resistance, wire terminals being provided for making electrical connections between external conductors and said contact pins.

Claim 28

Independent Claim 343 words

A system for the installation of electric wiring in a building, comprising: a profiled cable duct with a substantially U-shaped cross-section provide with a first set of inwardly directed ribs near the free edges of said duct, and with a second set of inwardly directed ribs parallel to and below said first set; a flat cable to be clamped behind said second set of ribs of said cable duct, said cable comprising an insulation base with a plurality of parallel longitudinal grooves opening in one surface of said base by means of narrow slots, bare conductors arranged in said grooves and being Accessible from the outside of said cable through said narrow slots; and a connector adapted to be clamped behind said first set of ribs of said cable duct and having a housing with a flat bottom wall, a carrier means movably mounted in said housing, a plurlity of contact pins mounted on said carrier means and projecting from said bottom wall, said pins each being arranged to fit in a corresponding slot of said cable when the connector is clamped into said cable duct, said bottom wall then being substantially parallel to the groove surface of said cable, said carrier means being resiliently supported in said connector housing so as to be movable in the direction in which said contact pins extend, said pins having a flat, rectangular cross-section, the smaller dimension being substantially equal to the width of a slot in the cable base, the longer dimension being directed in the longitudinal direction of the slot in question when the connector is inserted in said duct, the end face of each pin being substantially flat and being adapted to contact the surface of a bare conductor in the cable groove in question, the surface area of said end face being sufficiently large for conducting the envisaged current and providing, at the spring pressure exerted on said pin, a sufficiently small and substantially constant contact resistance, wire terminals being provided for making electrical connections between external conductors and said contact pins.

Claim 29

Dependent Claim 43 words

The system of claim 24 in which one contact pin corresponding to a ground conductor of said flat cable is made longer than the other contact pins of said connector, said one contact pin being individually axially biased relative to said carrier means.

Claim 30

Dependent Claim 51 words

The system of claim 24 wherein said cable base includes, near one lateral side of said grooved surface, a wider groove without a conductor, said connector being provided, near the corresponding side thereof with a projecting positioning ridge fitting in said groove when said connector is inserted in said cable duct.

Claim 31

Dependent Claim 33 words

The system of claim 24, in which the longitudinal side walls of the connector housing are provided with projecting shoulders adapted to engage behind the first set of ribs of a cable duct.

Claim 32

Dependent Claim 24 words

The system of claim 27, in which said shoulders are mounted on resilient wall sections adapted to be pressed inwardly for releasing said connector.

Claim 33

Dependent Claim 29 words

The system of claim 27, in which said shoulders are formed by a horse-shoe shaped brace fitting in corresponding grooves in the longitudinal side walls of the connector housing.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-03-17	1978-09-16	1979-03-18	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-03-17	1982-09-16	1983-03-18	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-03-17	1986-09-16	1987-03-18	$7700.00	Window Closed / Lapsed

System for the installation of electric wiring in a building

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