Locks – Special application – For control and machine elements
Patent
1986-10-20
1988-09-27
Smith, Gary L.
Locks
Special application
For control and machine elements
70224, 70422, 70380, E05B 1310
Patent
active
047732407
ABSTRACT:
A torque-releasable door handle assembly is provided for normally rotating a bolt-retracting sleeve to operate a door latching system. The door handle assembly includes a body for coupling to the bolt-retracting sleeve and a handle shell mounted on the body for rotational movement thereabout. A drive assembly is provided for yieldably connecting the body and handle shell to establish a normal driving connection so that the body is rotated normally to rotate the bolt-retracting sleeve and operate the door latching system in response to rotation of the handle shell. The drive assembly is configured to release the normal driving connection between the body and the handle shell in response to application of a rotation-inducing torque to the handle shell in excess of a predetermined amount. In preferred embodiments, the drive assembly includes a matched pair of mateable female and male drive rings positioned in a space between an exterior surface of the body and an interior surface of the handle shell. The male drive ring is reciprocable in the space away from a torque-transmitting position in engagement with the female drive ring toward an inactive position in spaced relation to the female drive ring in response to said excessive torque.
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Best Lock Corporation
Dino Suzanne L.
Smith Gary L.
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