Fire escape – ladder – or scaffold – Unitary foldable – rigid scaffold or ladder – Trestle
Patent
1980-09-10
1981-11-03
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Unitary foldable, rigid scaffold or ladder
Trestle
182153, 182186, 182226, F16M 1100
Patent
active
042980941
ABSTRACT:
A collapsible sawhorse is provided with a beam and a pair of leg assemblies adapted to support the beam and to be collapsible to a stored position adjacent a surface of the beam. A doglike structure at one end of each of the leg members is adapted to be positionable within a locking hole depending from the underside of the beam.
REFERENCES:
patent: 343829 (1886-06-01), Miller
patent: 401848 (1889-04-01), Miller
patent: 1224893 (1917-05-01), Beckwith
patent: 1967886 (1934-07-01), Johnson
patent: 2431898 (1947-12-01), Witken
patent: 3637045 (1972-01-01), Poffenbaugh
Hill Robert Charles
Machado Reinaldo P.
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