Static structures (e.g. – buildings) – Composite prefabricated panel including adjunctive means – Sandwich or hollow with sheet-like facing members
Patent
1986-09-11
1988-06-28
Friedman, Carl D.
Static structures (e.g., buildings)
Composite prefabricated panel including adjunctive means
Sandwich or hollow with sheet-like facing members
52806, 52809, E04C 232
Patent
active
047530588
ABSTRACT:
An elevated floor panel is disclosed in which a lower sheet metal element is formed with a plurality of projections extending from the lower plane of the panel to the upper planar surface. The projections are formed in sequential die drawing operations. In the first die drawing operation, square truncated pyramids of intermediate height are drawn so that the upper surfaces of the intermediate projections provide substantially unworked material. In the second drawing operation, four symmetrically arranged, semispherical projections are drawn from the unworked material at the tops of the preliminary projections. The tops of the semispherical projections are flattened and are welded to an upper sheet member to provide efficient stress transfer between the two sheet metal portions of the panel. By sequentially performing two drawing operations on material which is substantially unworked prior to each drawing operation, it is possible to reliably produce projections of greater depth. The compound projections resulting from the two drawing operations provide a compound beam system which efficiently transfers stress to provide a rigid, strong panel. The cavity between the two members is, in some cases, filled with a lightweight concrete.
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Donn Incorporated
Friedman Carl D.
Safavi Michael
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