Apparatus for locking and unlocking a flap door

Details Apparatus for locking and unlocking a flap door Apparatus for locking and unlocking a flap door

1992-12-18

1993-10-26

Moore, Richard E.

Closure fasteners

Cross bars

Vehicle door latches

292DIG72, E05C 1712

Patent

active

052559467

ABSTRACT:
A flap door in the floor of an aircraft cabin has a mechanism for locking and unlocking the flap door from either side. A bearing block with a bellcrank lever pivoted to the block is attached to the flap door that hinges upwardly into the passenger cabin. The bellcrank lever is one-armed and has a lateral roller that engages into a lateral guide groove. Further, a locking member is provided on the one-armed bellcrank lever, which catches behind a spring biased stop member on the bearing block in the closed position of the flap door. A handle recessed in the upwardly facing surface of the flap door is connected through a flexible pull member for withdrawing the stop member out of its locking position to open the door from above.

REFERENCES:
patent: 1489981 (1924-04-01), Copeman
patent: 1820238 (1931-08-01), Mears et al.
patent: 1935001 (1933-11-01), Webster
patent: 3039837 (1962-06-01), Poe
patent: 3724130 (1973-04-01), Bogue
patent: 3761135 (1973-09-01), Mundinger et al.
patent: 5135271 (1992-08-01), Bestwick

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