Fire escape – ladder – or scaffold – Unitary foldable – rigid scaffold or ladder – Trestle
Patent
1980-10-06
1982-04-20
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Unitary foldable, rigid scaffold or ladder
Trestle
182181, 182225, B27B 2100, F16M 1100
Patent
active
043254632
ABSTRACT:
A sawhorse having an elongated support member; a pair of elongated support rest bracket members; at least one pair of facing channel members bound to each of the support rest bracket members; a mounting bolt secured within and between the mounting bolt aperture of each facing channel member; a pair of sawhorse leg bracket members pivotally slidably disposed to each mounting bolt and each securing an end of a sawhorse leg; and a helical spring mounted around each of the mounting bolts and between each of the pair of leg bracket members. A process for collapsing a sawhorse for storing and/or transporting the same comprising compressing the helical spring on each mounting bolt by inwardly pivoting each pair of sawhorse legs; clearing the sawhorse leg bracket members out of the channels of the channel members; aligning the legs in a general relationship; and rotating each pair of legs towards the underside of the elongated support member.
REFERENCES:
patent: 1881755 (1932-10-01), Logan
patent: 2144049 (1939-01-01), Forcier
patent: 2396737 (1946-03-01), Maclaskey
patent: 2721060 (1955-10-01), Morain
patent: 3212606 (1965-10-01), Spaw
patent: 3233701 (1966-02-01), Hentzi
patent: 3282379 (1966-11-01), Jones
patent: 3443662 (1969-05-01), Thompson
patent: 3978943 (1976-09-01), Greenman
Machado Reinaldo P.
Widdowson John H.
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