Safety device for aircraft doors or hatches

Details Safety device for aircraft doors or hatches Safety device for aircraft doors or hatches

1976-07-08

1977-08-16

Blix, Trygve M.

Aeronautics and astronautics

Aircraft structure

Details

49 21, 49 31, 180113, 244 76B, 2441295, 292144, B64C 114

Patent

active

040421937

ABSTRACT:
A door or hatch operating mechanism is blocked by a bolt when the aircraft moves in that dynamic pressure is sensed by a spring biased displaceable large piston moving a small piston which acts on a hydraulic link acting, in turn, on another spring biased piston which holds the bolt in locking position or releases it.

REFERENCES:
patent: 1701491 (1929-02-01), Casey
patent: 1951464 (1934-03-01), Wragg
patent: 2189748 (1940-02-01), Wilson
patent: 2342184 (1944-02-01), Fawcett
patent: 2348426 (1944-05-01), Sparrow
patent: 2748855 (1956-06-01), Siems et al.
patent: 2793825 (1957-05-01), Highley
patent: 3004303 (1961-10-01), Wilmer
patent: 3830332 (1974-08-01), Fontaine

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