US3636903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectangular-duct forming machine
Assignee: LASALLE-DEITCH Co Inc
•
Filing: 1970-02-19
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Granted: 1972-01-25
•
Expires: 1990-02-19
Abstract
Abstract A machine designed to continuously progress a pair of elongated flat sheets of metal longitudinally through a plurality of cooperative dies which progressively in sequential steps gradually shape the two sheets into a duct having a rectangular cross-sectional configuration. The machine utilizes cooperative rotary dies to shape and form the duct in a continuous operation to a length equal to that of the sheets so that rectangular ducts of any desired length can be produced in an automatic operation by merely inserting into the machine a preprepared roll comprised of a pair of sheets of metal of the desired length, the sheets entering the machine at one end and leaving the same at the other end in the form of a continuous rectangular duct.
Inventors
- 👤 Leroy E Anderson
- 👤 Gerald J Munn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:08
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/02; B21D39/026; B21D5/00; B21D5/06; B21D5/10; B21D5/12; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5136; Y10T29/5137; Y10T29/5138
Claims Analysis
Total Claims: 70
Claim 1
Independent Claim
292 words
A rectangular heat duct former capable of continuously forming a rectangular duct of conventional heat duct crosssectional dimensions and of any appreciable length from pairs of rectangular sheets of metal, limited only by the length of such sheets, as they pass therethrough, comprising: a. an elongated frame, and b. rectangular duct-forming mechanism carried by said frame and constructed and arranged to continuously form in progressive stages ducts which have rectangular heat duct cross-sectional dimensions and configuration from pairs of such rectangular sheets of metal as they pass through said mechanism, said ductforming mechanism including: 1. two series of successive pairs of cooperative rotary die members 2. each of said series being disposed along one of a pair of spaced metal-sheet paths extending longitudinally of said frame 3. said pairs of cooperative rotary die members of each of said series being mounted for rotation upon said frame at spaced locations along the length of said frame and being constructed and arranged to engage the lateral portions of such sheets at each side thereof to cooperatively and progressively shape each of such pairs of sheets into an elongated rectangular duct as they pass longitudinally through said mechanism, 4. some of said pairs of cooperative rotary die members being also disposed at locations spaced transversely of said frame at opposite sides of such sheets in position to engage them at their lateral portions as they pass through said mechanism, and 5. progression means supported adjacent said series of rotary die members and constructed and arranged to engage and move a pair of such sheets of metal longitudinally through said mechanism in spaced relation to each other and in position to be engaged at their lateral portions and so shaped by said cooperative rotarY die members.
Claim 2
Dependent Claim
292 words
A rectangular heat duct former capable of continuously forming a rectangular duct of conventional heat duct crosssectional dimensions and of any appreciable length from pairs of rectangular sheets of metal, limited only by the length of such sheets, as they pass therethrough, comprising: a. an elongated frame, and b. rectangular duct-forming mechanism carried by said frame and constructed and arranged to continuously form in progressive stages ducts which have rectangular heat duct cross-sectional dimensions and configuration from pairs of such rectangular sheets of metal as they pass through said mechanism, said ductforming mechanism including: 1. two series of successive pairs of cooperative rotary die members 2. each of said series being disposed along one of a pair of spaced metal-sheet paths extending longitudinally of said frame 3. said pairs of cooperative rotary die members of each of said series being mounted for rotation upon said frame at spaced locations along the length of said frame and being constructed and arranged to engage the lateral portions of such sheets at each side thereof to cooperatively and progressively shape each of such pairs of sheets into an elongated rectangular duct as they pass longitudinally through said mechanism, 4. some of said pairs of cooperative rotary die members being also disposed at locations spaced transversely of said frame at opposite sides of such sheets in position to engage them at their lateral portions as they pass through said mechanism, and 5. progression means supported adjacent said series of rotary die members and constructed and arranged to engage and move a pair of such sheets of metal longitudinally through said mechanism in spaced relation to each other and in position to be engaged at their lateral portions and so shaped by said cooperative rotarY die members.
Claim 3
Dependent Claim
20 words
each of said series being disposed along one of a pair of spaced metal-sheet paths extending longitudinally of said frame
Claim 4
Dependent Claim
20 words
each of said series being disposed along one of a pair of spaced metal-sheet paths extending longitudinally of said frame
Claim 5
Dependent Claim
20 words
each of said series being disposed along one of a pair of spaced metal-sheet paths extending longitudinally of said frame
Claim 6
Dependent Claim
20 words
each of said series being disposed along one of a pair of spaced metal-sheet paths extending longitudinally of said frame
Claim 7
Dependent Claim
37 words
The structure defined in claim 1 wherein said progression means is powered and rotary and constructed and arranged to engage each of such sheets at various locations spaced transversely thereacross and inwardly of their extreme lateral portions.
Claim 8
Dependent Claim
68 words
said pairs of cooperative rotary die members of each of said series being mounted for rotation upon said frame at spaced locations along the length of said frame and being constructed and arranged to engage the lateral portions of such sheets at each side thereof to cooperatively and progressively shape each of such pairs of sheets into an elongated rectangular duct as they pass longitudinally through said mechanism,
Claim 9
Dependent Claim
68 words
said pairs of cooperative rotary die members of each of said series being mounted for rotation upon said frame at spaced locations along the length of said frame and being constructed and arranged to engage the lateral portions of such sheets at each side thereof to cooperatively and progressively shape each of such pairs of sheets into an elongated rectangular duct as they pass longitudinally through said mechanism,
Claim 10
Dependent Claim
68 words
said pairs of cooperative rotary die members of each of said series being mounted for rotation upon said frame at spaced locations along the length of said frame and being constructed and arranged to engage the lateral portions of such sheets at each side thereof to cooperatively and progressively shape each of such pairs of sheets into an elongated rectangular duct as they pass longitudinally through said mechanism,
Claim 11
Dependent Claim
68 words
said pairs of cooperative rotary die members of each of said series being mounted for rotation upon said frame at spaced locations along the length of said frame and being constructed and arranged to engage the lateral portions of such sheets at each side thereof to cooperatively and progressively shape each of such pairs of sheets into an elongated rectangular duct as they pass longitudinally through said mechanism,
Claim 12
Dependent Claim
68 words
The structure defined in claim 1, and a single roll of sheet metal supported adjacent said duct-forming mechanism and comprised of a pair of elongated flat sheets of metal disposed in superimposed contiguous relation and rolled into a single roll in concentric and contiguous convolutions, the sheets thereof extending into said duct-forming mechanism and the lateral portions thereof being engaged by said rotary die members in shaping relation.
Claim 13
Dependent Claim
55 words
The structure defined in claim 1 and a pair of separate rolls of elongated flat sheets of metal supported adjacent said duct-forming mechanism, each of said sheets extending from one of said rolls into said duct-forming mechanism in juxtaposed relation and being engaged in shaping relation at their lateral portions by said rotary die members.
Claim 14
Dependent Claim
40 words
some of said pairs of cooperative rotary die members being also disposed at locations spaced transversely of said frame at opposite sides of such sheets in position to engage them at their lateral portions as they pass through said mechanism,
Claim 15
Dependent Claim
40 words
some of said pairs of cooperative rotary die members being also disposed at locations spaced transversely of said frame at opposite sides of such sheets in position to engage them at their lateral portions as they pass through said mechanism,
Claim 16
Dependent Claim
41 words
some of said pairs of cooperative rotary die members being also disposed at locations spaced transversely of said frame at opposite sides of such sheets in position to engage them at their lateral portions as they pass through said mechanism, and
Claim 17
Dependent Claim
41 words
some of said pairs of cooperative rotary die members being also disposed at locations spaced transversely of said frame at opposite sides of such sheets in position to engage them at their lateral portions as they pass through said mechanism, and
Claim 18
Dependent Claim
54 words
progression means supported adjacent said series of rotary die members and constructed and arranged to engage and move a pair of such sheets of metal longitudinally through said mechanism in spaced relation to each other and in position to be engaged at their lateral portions and so shaped by said cooperative rotarY die members.
Claim 19
Dependent Claim
54 words
progression means supported adjacent said series of rotary die members and constructed and arranged to engage and move a pair of such sheets of metal longitudinally through said mechanism in spaced relation to each other and in position to be engaged at their lateral portions and so shaped by said cooperative rotarY die members.
Claim 20
Dependent Claim
55 words
progression means supported adjacent said series of rotary die members and constructed and arranged to engage and move a pair of such sheets of metal longitudinally through said mechanism in spaced relation to each other and in position to be engaged at their lateral portions and so shaped by said cooperative rotary die members, and
Claim 21
Dependent Claim
55 words
progression means supported adjacent said series of rotary die members and constructed and arranged to engage and move a pair of such sheets of metal longitudinally through said mechanism in spaced relation to each other and in position to be engaged at their lateral portions and so shaped by said cooperative rotary die members, and
Claim 22
Dependent Claim
17 words
The structure defined in claim 1 wherein said rotary die members are arranged in vertically spaced sets.
Claim 23
Dependent Claim
46 words
The structure defined in claim 1 wherein some of said rotary dies are juxtaposed relative to other of said dies with respect to such sheets of metal so as to engage and simultaneously shape opposite lateral portions of such sheets as they pass through said mechanism.
Claim 24
Dependent Claim
13 words
a fixed die member carried by said frame and extending longitudinally thereof, and
Claim 25
Dependent Claim
13 words
a fixed die member carried by said frame and extending longitudinally thereof, and
Claim 26
Dependent Claim
13 words
a fixed die member carried by said frame and extending longitudinally thereof, and
Claim 27
Dependent Claim
13 words
a fixed die member carried by said frame and extending longitudinally thereof, and
Claim 28
Dependent Claim
28 words
some of said pairs of cooperative rotary die members being also disposed at locations spaced from each other in at least two transverse directions relative to said frame.
Claim 29
Dependent Claim
28 words
some of said pairs of cooperative rotary die members being also disposed at locations spaced from each other in at least two transverse directions relative to said frame.
Claim 30
Dependent Claim
27 words
seam-forming mechanism carried by said frame and constructed and arranged to engage the extreme lateral portions of such sheets of metal and form a seam therefrom, and
Claim 31
Dependent Claim
27 words
seam-forming mechanism carried by said frame and constructed and arranged to engage the extreme lateral portions of such sheets of metal and form a seam therefrom, and
Claim 32
Dependent Claim
13 words
a fixed die member carried by said frame and extending longitudinally thereof, and
Claim 33
Dependent Claim
13 words
a fixed die member carried by said frame and extending longitudinally thereof, and
Claim 34
Dependent Claim
55 words
a plurality of camming members mounted on said frame adjacent said fixed die member and constructed and arranged with respect thereto to engage and cooperatively shape lateral portions of such sheets as the latter pass longitudinally through said mechanism and thereby form such sheets progressively along their lengths into a duct having a rectangular configuration.
Claim 35
Dependent Claim
55 words
a plurality of camming members mounted on said frame adjacent said fixed die member and constructed and arranged with respect thereto to engage and cooperatively shape lateral portions of such sheets as the latter pass longitudinally through said mechanism and thereby form such sheets progressively along their lengths into a duct having a rectangular configuration.
Claim 36
Dependent Claim
56 words
a plurality of rotary members rotatably mounted on said frame adjacent said fixed die member and constructed and arranged with respect thereto to engage and cooperatively shape lateral portions of such sheets as the latter pass longitudinally through said mechanism and thereby form such sheets progressively along their length into a duct having a rectangular configuration.
Claim 37
Dependent Claim
56 words
a plurality of rotary members rotatably mounted on said frame adjacent said fixed die member and constructed and arranged with respect thereto to engage and cooperatively shape lateral portions of such sheets as the latter pass longitudinally through said mechanism and thereby form such sheets progressively along their length into a duct having a rectangular configuration.
Claim 38
Dependent Claim
12 words
The structure defined in claim 1, wherein said duct-forming mechanism also includes:
Claim 39
Dependent Claim
38 words
a plurality of cooperative pairs of spaced rotary wall-stiffening dies carried by said frame and constructed and arranged to receive such sheets of metal therebetween and progressively form wall-stiffening ribs in such sheets as they pass longitudinally therethrough.
Claim 40
Dependent Claim
38 words
a plurality of cooperative pairs of spaced rotary wall-stiffening dies carried by said frame and constructed and arranged to receive such sheets of metal therebetween and progressively form wall-stiffening ribs in such sheets as they pass longitudinally therethrough.
Claim 41
Dependent Claim
12 words
The structure defined in claim 1, wherein said duct-forming mechanism also includes:
Claim 42
Dependent Claim
60 words
a plurality of camming rollers mounted on said frame for rotation about nonparallel axes adjacent said fixed die member and constructed and arranged with respect thereto to engage and cooperatively shape lateral portions of such sheets as the latter pass longitudinally through said mechanism and thereby form such sheets progressively along their lengths into a duct having a rectangular configuration.
Claim 43
Dependent Claim
60 words
a plurality of camming rollers mounted on said frame for rotation about nonparallel axes adjacent said fixed die member and constructed and arranged with respect thereto to engage and cooperatively shape lateral portions of such sheets as the latter pass longitudinally through said mechanism and thereby form such sheets progressively along their lengths into a duct having a rectangular configuration.
Claim 44
Dependent Claim
32 words
seam-deforming mechanism carried by said frame and constructed and arranged to progressively deform portions of the seam so formed as such sheets move through said mechanism to positively interlock such seam portions.
Claim 45
Dependent Claim
32 words
seam-deforming mechanism carried by said frame and constructed and arranged to progressively deform portions of the seam so formed as such sheets move through said mechanism to positively interlock such seam portions.
Claim 46
Dependent Claim
14 words
The structure defined in claim 1 wherein said rotary die members are power driven.
Claim 47
Dependent Claim
25 words
The structure defined in claim 1 wherein said forming mechanism includes securing means for securing the adjacent lateral portions of said sheets to each other.
Claim 48
Dependent Claim
35 words
The structure defined in claim 1 wherein said forming mechanism includes securing means constructed and arranged to permanently lock the adjacent lateral portions of said sheets to each other after they have been so shaped.
Claim 49
Dependent Claim
21 words
The structure defined in claim 1 wherein said duct-forming mechanism includes seam-forming mechanism and said seam-forming mechanism includes rotary die members.
Claim 50
Dependent Claim
17 words
The structure defined in claim 1, wherein said duct-forming mechanism includes seam-forming mechanism carried by said frame.
Claim 51
Dependent Claim
44 words
The structure defined in claim 1 wherein said duct-forming mechanism includes seam-forming mechanism and seam-flattening mechanism, said seam-flattening mechanism being constructed and arranged to flatten the seam formed by said seam-forming mechanism against the sidewall of the rectangular duct formed by said duct-forming mechanism.
Claim 52
Dependent Claim
26 words
The structure defined in claim 1 wherein said duct-forming mechanism includes seam-forming mechanism and seam-flattening mechanism, said seam-flattening mechanism including at least one rotary die member.
Claim 53
Dependent Claim
75 words
The structure defined in claim 1 wherein said duct-forming mechanism is constructed and arrangEd to engage and shape such sheets into elongated generally U-shaped channels facing each other with their lateral portions extending toward each other to define a rectangular duct and includes rotary members constructed and arranged to form an interlocking seam of said lateral portions intermediate the corners and at each of one of a pair of opposite sides of such rectangular ducts.
Claim 54
Dependent Claim
76 words
The structure defined in claim 1 wherein said duct-forming mechanism is constructed and arranged to engage and shape such sheets into elongated angulated channels facing each other with their lateral portions extending toward and adjacent each other to cooperatively define a rectangular duct and includes rotary members constructed and arranged to form an interlocking seam of said lateral portions adjacent one corner and at each one of a pair of opposite sides of such rectangular ducts.
Claim 55
Dependent Claim
81 words
The structure defined in claim 1 wherein said duct-forming mechanism includes pairs of cooperating rotary die members constructed and arranged to engage and shape the outermore lateral portions of such sheets into angular seam-forming shapes, and also including additional rotary die members spaced from and constructed and arranged behind said first-mentioned die members to engage innermore lateral portions of such sheets and shape the same into opposed adjacent channel members of generally U-shaped configuration in cross section and facing each other.
Claim 56
Dependent Claim
94 words
A rectangular heat duct former capable of continuously forming a rectangular duct of conventional heat duct cross-sectional dimensions and of any appreciable length from pairs of rectangular sheets of metal, limited only by the length of such sheets, as they pass therethrough, comprising: a. an elongated frame, and b. rectangular duct-forming mechanism carried by said frame and constructed and arranged to continuously form in progressive stages ducts which have rectangular heat duct cross-sectional dimensions and configuration from pairs of such rectangular sheets of metal as they pass through said mechanism, said duct-forming mechanism including:
Claim 57
Dependent Claim
94 words
A rectangular heat duct former capable of continuously forming a rectangular duct of conventional heat duct cross-sectional dimensions and of any appreciable length from pairs of rectangular sheets of metal, limited only by the length of such sheets, as they pass therethrough, comprising: a. an elongated frame, and b. rectangular duct-forming mechanism carried by said frame and constructed and arranged to continuously form in progressive stages ducts which have rectangular heat duct cross-sectional dimensions and configuration from pairs of such rectangular sheets of metal as they pass through said mechanism, said duct-forming mechanism including:
Claim 58
Dependent Claim
52 words
The structure defined in claim 19 and a cradle mounted adjacent one end of said frame and constructed and arranged to receive and support at least one preprepared roll of a pair of elongated contiguous metal sheets in position to be fed into said duct-forming mechanism in superimposed relation to each other.
Claim 59
Dependent Claim
49 words
The structure defined in claim 19 and cradle structure mounted adjacent one end of said frame and constructed and arranged to receive and support a pair of rolls of elongated flat sheets of metal in position to be fed into said duct-forming mechanism in superimposed relation to each other.
Claim 60
Dependent Claim
75 words
The structure defined in claim 19 wherein said duct-forming mechanism is constructed and arranged to engage and shape such sheets into elongated generally U-shaped channels facing each other with their lateral portions extending toward each other to define a rectangular duct and includes rotary members constructed and arranged to form an interlocking seam of said lateral portions intermediate the corners and at each of one of a pair of opposite sides of such rectangular ducts.
Claim 61
Dependent Claim
76 words
The structure defined in claim 19 wherein said duct-forming mechanism is constructed and arranged to engage and shape such sheets into elongated angulated channels facing each other with their lateral portions extending toward and adjacent each other to cooperatively define a rectangular duct and includes rotary members constructed and arranged to form an interlocking seam of said lateral portions adjacent one corner and at each one of a pair of opposite sides of such rectangular ducts.
Claim 62
Dependent Claim
17 words
The structure defined in claim 19 wherein said forming mechanism includes cooperative fixed and rotary die members.
Claim 63
Dependent Claim
19 words
The structure defined in claim 19 wherein said feeding means includes a roller having a resilient sheet engaging surface.
Claim 64
Dependent Claim
33 words
The structure defined in claim 19 and rotary support members supporting said frame and adapting the same for ready movement of said duct-forming mechanism and said frame from one manufacturing location to another.
Claim 65
Dependent Claim
21 words
The structure defined in claim 19 wherein said pairs of rotary die members are disposed at multiple elevations upon said frame.
Claim 66
Dependent Claim
26 words
The structure defined in claim 19 and a pair of elongated rectangular sheets of metal fed into said duct-forming mechanism in spaced relation to each other.
Claim 67
Dependent Claim
11 words
The structure defined in claim 19 wherein said duct-forming mechanism includes:
Claim 68
Dependent Claim
11 words
The structure defined in claim 19 wherein said duct-forming mechanism includes:
Claim 69
Dependent Claim
17 words
The structure defined in claim 30 wherein said camming rollers are disposed at a multiple of levels.
Claim 70
Dependent Claim
11 words
The structure defined in claim 19 wherein said duct-forming mechanism includes:
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |