Fire escape – ladder – or scaffold – Unitary foldable – rigid scaffold or ladder – Trestle
Patent
1995-01-03
1996-10-01
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Unitary foldable, rigid scaffold or ladder
Trestle
182225, B27B 2100
Patent
active
055604480
ABSTRACT:
A folding sawhorse including two bases, each of the two bases having a top and at least one leg, a first plurality of spaced U-shaped coupling elements connected to or formed with the top of the first base, a second plurality of spaced U-shaped coupling elements connected to or formed with the top of the second base, complementary to and staggered relative to the first plurality of coupling elements, the tops of the two bases adjoining one another, with the first and second pluralities of U-shaped coupling elements in interlocking relationship, a rod engaged by the first and second pluralities of U-shaped coupling elements, and cover member extending over the first and second pluralities of U-shaped coupling elements and engaged by the rod to retain the tops of the two bases adjoining one another. In addition, a foldable tray for a sawhorse including first and second tray members each defining first and second edges, the first edges of the first and second tray members being pivotably affixed to the first and second bases, respectively, and the second edges of the first and second tray members being pivotably coupled to one another, the second edges including interdigitated protruding flaps alternating with flap-receiving recesses for partial overlap of the tray members.
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patent: 5351785 (1994-10-01), DuRapau
patent: 5467842 (1995-11-01), Meloy
Chin-Shue Alvin C.
Friedman Mark M.
Zag Ltd.
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