US3969866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet assemblies and sheets therefor
Assignee: P J K PROJECTS Ltd
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Filing: 1974-04-11
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Granted: 1976-07-20
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Expires: 1994-04-11
Abstract
Abstract The invention disclosed relates to fabricated rigid sheets profiled for engagement with adjacent similar sheets for assembly as a panel having sufficient rigidity to enable sufficiently large areas to be produced for the construction of van bodies, domestic and other building, caravans and road signs. Each sheet is of substantially rectangular shape with rearwardly extending flanges at each of the opposed longitudinal edges arranged supportingly to engage a corresponding flange of an adjacent similar sheet in assembly. One of the flanges is formed with at least one and preferably a plurality of spaced openings and securing means is associated with the other of the flanges for engagement in the openings of an adjacent similar sheet. Preferably the flanges connect to their respective longitudinal edges by folds one of which is formed with spaced apertures and the other of which is dimensioned to be received in the one fold of an adjacent similar sheet and has projections associated therewith for engagement in the apertures of the adjacent similar sheet. The projections may be stuck out of the rear wall of the inner fold or may be formed on a securing strip dimensioned to be received in the inner fold in which case the projections extend through apertures in the rear wall of the inner fold.
Inventors
- 👤 Peter John Kyne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:03
CPC Classifications
F; F16; F16B; F16B5/00; F16B5/06; F16B5/0607; F16B5/0621; F16B5/0664; F16B5/07; G; G09; G09F; G09F7/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
339 words
A fabricated rigid sheet profiled for engagement with an adjacent similar sheet for assembly as a panel, the sheet being of substantially rectangular shape and having a first flange extending rearwardly of one longitudinal edge, a first fold connecting said first flange to said one longitudinal edge and providing a first U-shaped channel, a second flange of greater width than said first flange and extending rearwardly of a second longitudinal edge opposed to said one longitudinal edge, a second fold connecting said second flange to said second longitudinal edge and providing a second U-shaped channel, a third flange extending in one direction from the rear longitudinal edge of said first flange and substantially parallel to the general plane of the sheet, a fourth flange extending in said one direction from the rear longitudinal edge of said second flange and substantially parallel to the general plane of the sheet, said first and second folds extending from the respective first and second flanges in the direction opposite to said one direction, and being rearward of the general plane of the sheet with the first and second channels opening in said one direction and being so dimensioned that the first fold is engageable within the second fold of an adjacent similar sheet by relative displacement of the sheets in the general plane thereof to locate the adjacent sheets with the first flange against and in supporting engagement with the second flange of the adjacent similar sheet, a first plurality of spaced openings in the wall of said second fold remote from the general plane of the sheet, a second plurality of spaced openings in the wall of said first fold remote from the general plane of the sheet located to register with said openings in the second fold of an adjacent similar sheet, a strip dimensioned to be received within said first fold and a plurality of projections integrally formed with said strip and dimensioned to extend into the registering openings formed in the first and second folds of adjacent similar sheets.
Claim 2
Dependent Claim
339 words
A fabricated rigid sheet profiled for engagement with an adjacent similar sheet for assembly as a panel, the sheet being of substantially rectangular shape and having a first flange extending rearwardly of one longitudinal edge, a first fold connecting said first flange to said one longitudinal edge and providing a first U-shaped channel, a second flange of greater width than said first flange and extending rearwardly of a second longitudinal edge opposed to said one longitudinal edge, a second fold connecting said second flange to said second longitudinal edge and providing a second U-shaped channel, a third flange extending in one direction from the rear longitudinal edge of said first flange and substantially parallel to the general plane of the sheet, a fourth flange extending in said one direction from the rear longitudinal edge of said second flange and substantially parallel to the general plane of the sheet, said first and second folds extending from the respective first and second flanges in the direction opposite to said one direction, and being rearward of the general plane of the sheet with the first and second channels opening in said one direction and being so dimensioned that the first fold is engageable within the second fold of an adjacent similar sheet by relative displacement of the sheets in the general plane thereof to locate the adjacent sheets with the first flange against and in supporting engagement with the second flange of the adjacent similar sheet, a first plurality of spaced openings in the wall of said second fold remote from the general plane of the sheet, a second plurality of spaced openings in the wall of said first fold remote from the general plane of the sheet located to register with said openings in the second fold of an adjacent similar sheet, a strip dimensioned to be received within said first fold and a plurality of projections integrally formed with said strip and dimensioned to extend into the registering openings formed in the first and second folds of adjacent similar sheets.
Claim 3
Dependent Claim
32 words
A sheet according to claim 1 in which the projections have a leading edge of lesser dimension than the trailing edge to provide a camming action when inserted into the first fold.
Claim 4
Dependent Claim
50 words
A sheet according to claim 2 in which the projections are formed by wings bent out of the general plane of the strip and arranged in pairs, each pair of wings being dimensioned to extend into corresponding registering openings formed in the first and second folds of adjacent similar sheets.
Claim 5
Dependent Claim
55 words
A sheet according to claim 1 in which the third flange has a width less than the width of the fourth flange and the fourth flange is formed with an inturned lip dimensioned to restrain displacement of the third flange when the first fold is engaged in the second fold of an adjacent similar sheet.
Claim 6
Dependent Claim
30 words
A sheet according to claim 1 in which the first fold extends beyond the one longitudinal edge and the second fold is disposed rearward of the body of the sheet.
Claim 7
Dependent Claim
54 words
A sheet according to claim 1 in which the first fold is connected to the one longitudinal edge by an extension of the first flange and the second fold is connected to the second longitudinal edge by an extension of the second flange, the extensions of the first and second flanges providing supporting ledges.
Claim 8
Dependent Claim
12 words
A panel composed of a plurality of sheets according to claim 1.
Claim 9
Dependent Claim
22 words
A panel according to claim 7 having a sealing cord disposed between the engaged first and second folds of adjacent similar sheets.
References Cited (Backward Citations)
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US3127962A
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US3394524A
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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) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |