Fire escape – ladder – or scaffold – Self-sustaining – Scaffold horse
Patent
1992-09-14
1993-11-30
Chotkowski, Karen J.
Fire escape, ladder, or scaffold
Self-sustaining
Scaffold horse
182185, 182151, E04G 100
Patent
active
052656977
ABSTRACT:
A step sawhorse that is easily assembled and disassembled for ease in storage and transporting. The sawhorse is comprised of six wood parts (four identical legs, a top rail and step shelf). The parts are designed and constructed such as when assembled only two bolts with washers and nuts are needed to make secure a sturdy and rigid sawhorse, capable of supporting a heavy load. The legs are notched midway to support the step shelf, and notched at the top to support the top rail. The step shelf is a solid piece (providing rigidity in all four directions) with a rectangular opening at each corner to receive the legs. The top rail and legs are drilled to receive bolts with washers and nuts. When assembled and bolted together you have an exceptionally strong and lightweight sawhorse, with the added feature of a step shelf that will support a workman at the convenient height to work on an eight foot ceiling.
REFERENCES:
patent: 302945 (1884-08-01), Sargent
patent: 1442353 (1923-01-01), Merkel
patent: 1458738 (1923-06-01), Teeken
patent: 2194027 (1940-03-01), McDonald
patent: 2435060 (1948-01-01), Thompson
patent: 2634172 (1953-04-01), Hollidge
patent: 2635013 (1953-04-01), Doucette
patent: 3167290 (1965-01-01), Beckwell
patent: 3241633 (1966-03-01), Bond et al.
patent: 3941209 (1976-03-01), Adams
patent: 4756384 (1988-07-01), Maddox
Chotkowski Karen J.
Yeager Arthur G.
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