Automatically retractable step

Details Automatically retractable step Automatically retractable step

1992-01-30

1993-03-23

Chotkowski, Karen J.

Fire escape, ladder, or scaffold

Wall- or floor-attached

Independent rung or step

280166, B60R 300

Patent

active

051956098

ABSTRACT:
A retractable step is movable from a position located in a cavity to an extended position located outside of the cavity. The invention provides for a latching facility to hold the step in the extended position against the bias of a retracting spring. A person standing on the step, exerting a downward force thereon disengages the latching facility. As the downward force is removed from the step, the step automatically retracts in response to the bias of the retracting spring.

REFERENCES:
patent: 2217570 (1940-10-01), Stroup
patent: 3517942 (1970-06-01), Cuffe et al.
patent: 3584704 (1971-06-01), Eckmann
patent: 3671058 (1972-06-01), Kent
patent: 3861713 (1975-01-01), McKee
patent: 4108458 (1978-08-01), Owens
patent: 4180143 (1979-12-01), Clugston
patent: 4462486 (1984-07-01), Dignan

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