Retractable ladder assembly

Details Retractable ladder assembly Retractable ladder assembly

1988-09-06

1989-08-29

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Wall- or floor-attached

Retractable or collapsible beneath floor, track-mounted

182 92, B60R 302, E06C 504

Patent

active

048608548

ABSTRACT:
A ladder assembly, primarily for use on vehicles having compartments inconveniently displaced from the ground, has a ladder slidably attached to a storage portion between a retracted storage position and a substantially vertical, operative position, wherein the ladder is reachably displaced above the ground in the operative position. The storage portion is designed to retractably and securely store the ladder when not in use and to prevent disengagement of the ladder from the storage portion when the ladder is in the operative position. The ladder assembly further includes a bracing portion which prevents swinging movement of the ladder, in the operative position, towards the storage portion.

REFERENCES:
patent: 2544799 (1951-03-01), McCann
patent: 2642217 (1953-06-01), Jennings
patent: 2678831 (1954-05-01), Fisher
patent: 2809849 (1957-10-01), Benne
patent: 3008533 (1961-11-01), Haberle
patent: 3406984 (1968-10-01), Kilbey
patent: 3826337 (1974-07-01), Liptak
patent: 4093257 (1978-06-01), Tarvin
patent: 4139078 (1979-02-01), Keller
patent: 4140327 (1979-02-01), Hackney, III

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