Collapsible scaffold

Details Collapsible scaffold Collapsible scaffold

1985-02-07

1986-09-02

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Unitary foldable, rigid scaffold or ladder

182118, 182179, E04G 134

Patent

active

046090711

ABSTRACT:
A collapsible scaffold. A pair of spaced apart vertical ladder configured frames include horizontally extending members upon which may rest a board or other supporting surface. A pair of cross members are pivotally mounted to the upstanding posts of the frames and have their outer distal ends positioned and hingedly secured together. A sleeve rigidly attached to one distal end of the cross member extends around the adjacent distal end of the second cross member. A window in the sleeve forms a stop surface through which a projection on the other distal end extends limiting the amount of relative motion between the cross frames.

REFERENCES:
patent: 139862 (1903-09-01), Harrod
patent: 2852145 (1958-09-01), Scholz
patent: 2900158 (1959-08-01), Ditter
patent: 2925921 (1960-02-01), De Pew
patent: 3011586 (1961-12-01), Harvey
patent: 3493208 (1970-02-01), Sato
patent: 3516425 (1970-06-01), Rigal
patent: 3616469 (1971-11-01), Injeski
patent: 3858683 (1975-01-01), Rachocki
patent: 4439052 (1984-03-01), Wallther
patent: 4534447 (1985-08-01), Champigny
Genie Industries, printed 6/84.

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