Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1977-07-22
1978-05-23
Whitby, Edward G.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
113116G, 219 87, 228181, 228182, 428182, 428188, 428603, 428604, B32B 330, B32B 328
Patent
active
040911551
ABSTRACT:
A contoured work top is provided as a new or replacement work surface to fit over an existing support structure such as a desk or table. The work top has a flat sheet of structural material with a top surface and a bottom surface. A second sheet of structural material is provided having a plurality of spaced apart, parallel raised ribs extending across the second sheet which is rigidly connected to the lower surface at tips of the raised ribs thus supporting the second sheet a spaced apart distance from the flat sheet. Also included is at least one flat strip of structural material extending across the second sheet perpendicular to the raised ribs and rigidly connected to the second sheet at locations between the raised ribs. The work top may also have side walls extending downwards from the edges of the flat sheet beyond the second sheet adapted to retain the work top in place on a supporting structure.
REFERENCES:
patent: 3655502 (1972-04-01), Yoshikawa
patent: 4053969 (1977-10-01), Bayard
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