Foldable inclined multi-section ramp actuation system

Details Foldable inclined multi-section ramp actuation system Foldable inclined multi-section ramp actuation system

1976-05-27

1978-01-17

Oresky, Lawrence J.

Fire escape, ladder, or scaffold

Having transpositioning base and erecting means

Telescopic erecting means

14 711, 182 94, 160213, B60P 100

Patent

active

040687708

ABSTRACT:
A foldable, articulated inclined ramp or stair assembly actuation system is shown and described. The assembly comprises at least three elements connected by hinges to each other and foldable on each other under the control of a series of pulleys interconnected by a single drive cable. A method of operating the arrangement is described whereby an orderly folding sequence is automatically maintained by the actuating means. The assembly is suitable for installation within an aircraft and may be power driven to extend and retract through a loading door, thus obviating the need for any ground equipment for the purpose.

REFERENCES:
patent: 2558975 (1951-07-01), Moreno et al.
patent: 3028018 (1962-04-01), Mott
patent: 3664516 (1972-05-01), Goudy
patent: 3733758 (1973-05-01), Maier et al.
patent: 3785462 (1974-01-01), Coad et al.
patent: 3799479 (1974-03-01), Roeder et al.
patent: 3936034 (1976-03-01), Larralde

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