Foldable ladder

Details Foldable ladder Foldable ladder

1982-02-25

1984-08-07

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Unitary foldable, rigid scaffold or ladder

Collapsible ladder

182 96, 182108, E06C 1383

Patent

active

044638299

ABSTRACT:
A self-storing foldable ladder having a pair of side rails and a plurality of step rungs, each rung being pivotally mounted to one of said rails. The other of said rails includes a guide pin for cooperatively engaging a longitudinal groove within the rung. The rungs are adapted for swingable displacement about the pivot as the side rails are moved into abutting contact. The rails are then linearly translatable with the guide pin being slidable within the groove and the rails assuming a mutually coextensive position with the rungs housed therebetween. A releasable locking mechanism is adapted for securing the rails when in this folded mode; alternatively, the locking mechanism stabilizes the ladder when in an open mode.

REFERENCES:
patent: 1600103 (1926-09-01), Evans
patent: 2925877 (1960-02-01), Wright
patent: 3025923 (1962-03-01), Burnstein
patent: 3292735 (1966-12-01), Utley
patent: 3414081 (1968-12-01), Wedvik
patent: 4030565 (1977-06-01), Chaput
patent: 4182431 (1980-01-01), Wing

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