Fire escape – ladder – or scaffold – Unitary foldable – rigid scaffold or ladder – Trestle
Patent
1983-07-11
1984-07-24
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Unitary foldable, rigid scaffold or ladder
Trestle
182181, 182225, B27B 2100, F16M 1100
Patent
active
044613709
ABSTRACT:
A collapsible sawhorse bracket comprising a main member coupled to the sawhorse cross beam, a first leg member pivotally coupled to the main member and coupledto a sawhorse leg, and a second leg member pivotally coupled to the main member and coupled to another sawhorse leg. The main member is formed as one-piece with a central portion having depending side walls thereby defining a substantially U-shaped cross section, as are the two leg members. The leg members are pivotally coupled to the main member by a pair of bolts passing through various sets of aligned apertures in the main and leg member side walls. Bores in the main member side walls releasably receive bosses extending from the leg member side walls to releasably lock the leg members in outwardly extending positions.
REFERENCES:
patent: 1398471 (1921-11-01), Smart
patent: 1685283 (1928-09-01), Gibson
patent: 1881755 (1932-10-01), Logan et al.
patent: 2136420 (1938-11-01), Edwards
patent: 2198956 (1940-04-01), Thielepape
patent: 2427679 (1946-01-01), Larson
patent: 2555503 (1951-06-01), Morton
patent: 2812219 (1957-11-01), Lange
patent: 3064756 (1962-11-01), Finizza
patent: 4238001 (1980-12-01), Alexander
Action Group, Inc.
Machado Reinaldo P.
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