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Sheet assemblies and sheets therefor

  • US 3,969,866 A
  • Filed: 04/11/1974
  • Issued: 07/20/1976
  • Est. Priority Date: 04/16/1973
  • Status: Expired due to Term
First Claim
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1. 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.

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