Foldable ladder scaffold

Details Foldable ladder scaffold Foldable ladder scaffold

1984-04-03

1985-08-13

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Unitary foldable, rigid scaffold or ladder

182119, 182222, E04G 134, E04G 120

Patent

active

045344477

ABSTRACT:
A foldable scaffold is disclosed, including a frame and a person-supporting plank. The frame comprises two upwardly-extending end ladders. A backwardly-located truss pivotally joins the ladders together and includes a hinge at the intermediate portion thereof for pivotal forward movement of the latter from a fully-extended truss position to a folded truss position. The latter movement produces relative lateral movement of the ladders from spaced-apart positions, one toward the other, to near-abutting positions. The frame also includes a hinge to releasably immobilize the hinge and maintain the truss in fully-extended position. The person-supporting plank is removably fixed to and extends between the ladders when the truss in its fully-extended position.

REFERENCES:
patent: 1943871 (1934-01-01), Landberg
patent: 2982379 (1961-05-01), Fisher
patent: 2994402 (1961-08-01), Tyler
patent: 3207260 (1965-09-01), Castagna
patent: 3212605 (1965-10-01), Dickerson
patent: 3235038 (1966-02-01), Nesslinger
patent: 3434567 (1969-03-01), Wilkins
patent: 3504768 (1970-04-01), Boyd
patent: 3509966 (1970-05-01), Sarno

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