Closure fasteners – Cross bars – Vehicle door latches
Patent
1992-01-24
1993-01-19
Moore, Richard E.
Closure fasteners
Cross bars
Vehicle door latches
292DIG71, E05C 1712
Patent
active
051801990
ABSTRACT:
A flap door for closing a hatch through a floor separating an upper and lower deck, e.g. in an aircraft, is equipped with a locking and unlocking mechanism in which a locking roller can be moved out of a locking position prior to any force applied to the door in an upward opening direction. For this purpose a bearing block is secured to the body of the flap door and a bell crank lever is journalled in the mounting block. One lever arm of the bell crank lever is constructed as a handle, while the other substantially shorter arm of the bell crank lever carries at its free end the locking roller. In its locking position the locking roller engages a spring biased locking claw. When the flap door is to be opened, the initial angular movement of the handle lever caused the roller to first disengage from the claw and then roll along a guide rail. When the unlocking is completed, the handle lever is in a substantially vertical position enabling the operator to apply an upwardly directed force to the flap door.
REFERENCES:
patent: 1489981 (1924-04-01), Capeman
patent: 1820238 (1931-08-01), Mears et al.
patent: 2180606 (1939-11-01), Oys et al.
patent: 3761135 (1973-09-01), Mundinger et al.
Allerding Volker
Teichmann Thorsten
Deutsche Airbus GmbH
Fasse W. G.
Moore Richard E.
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