Fire escape – ladder – or scaffold – Unitary foldable – rigid scaffold or ladder – Trestle
Patent
1986-12-19
1987-12-08
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Unitary foldable, rigid scaffold or ladder
Trestle
182181, 182225, B27B 2100
Patent
active
047113197
ABSTRACT:
A sawhorse that is foldable and adaptable to stand up without wabble on any uneven surface; the sawhorse including two hollow backbone sections pivoted together at one ends thereof so to form a long backbone assembly, and a pair of pivotable legs attached to each section so to pivot outwardly of the hollow interior of the sections so to stand upon a ground or other surface.
REFERENCES:
patent: 862725 (1907-08-01), Fietsam
patent: 2473342 (1949-06-01), Larson
patent: 2755144 (1956-07-01), Simmons
patent: 2897911 (1959-08-01), Bowers
patent: 3016104 (1962-01-01), Johnson
patent: 4489808 (1984-12-01), Voye
Sansotta Carmelo
Spector George
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