Aircraft door counterbalance system

Details Aircraft door counterbalance system Aircraft door counterbalance system

1976-04-22

1978-05-02

Downey, Kenneth

Movable or removable closures

Convertible

2441295, 49386, E06B 728

Patent

active

040867269

ABSTRACT:
A counterbalance system for aircraft doors which includes a varying radius pulley mounted to the door and a spring-powered reel to apply a substantially uniform force on the pulley to exert a moment on the pulley which is opposite the moment exerted by the door.

REFERENCES:
patent: 2663047 (1953-12-01), Grenzeback
patent: 2931599 (1960-04-01), McQuilkin
patent: 3091818 (1963-06-01), Clark

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