Fire escape – ladder – or scaffold – Unitary foldable – rigid scaffold or ladder – Trestle
Patent
1995-09-18
1998-01-06
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Unitary foldable, rigid scaffold or ladder
Trestle
182225, 1821811, B27B 2100
Patent
active
057044503
ABSTRACT:
A portable and foldable workhorse. A pair of parallel rails includes an open space between the rails, the rails providing a flat top support surface and a bottom support surface. A pair of leg assemblies each includes a top surface. A center beam is attached to each leg assembly so that each center beam is moveable in the open space between said pair of rails. A shaft passes through and perpendicular to the parallel rails and through and perpendicular to the center beam. The shaft pivotally connects each center beam to the rails to allow movement of each leg assembly between a usage position wherein the rail bottom support surface rests on the top surface of the leg assemblies and a storage position wherein the leg assemblies will move radially about a pivot point on the top rails.
REFERENCES:
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patent: 4756386 (1988-07-01), Blanchard
patent: 4790411 (1988-12-01), Ottoson
patent: 4926966 (1990-05-01), Boudreau
patent: 5215162 (1993-06-01), Parks et al.
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