Locks – Operating mechanism – Key
Patent
1996-10-31
1998-09-29
Barrett, Suzanne Dino
Locks
Operating mechanism
Key
70190, 70224, 70381, E05B 910
Patent
active
058132619
ABSTRACT:
a device allowing engagement of a conventional keyed deadbolt lock tumbler assembly without use of a key is provided. The device is assembled around the tumbler assembly and is fitted into a standard door lock cut-out. The device includes a rotatable ring extending substantially around the periphery of the device. At rest the rotatable ring is biased in an original starting position. Upon overcoming the bias, the rotatable ring is moved to a second engaging position in which the deadbolt is projected into an engaged position. Upon release of the rotatable ring the ring is biased back to the original position, while at the same time the deadbolt remains engaged. The biasing back of the device prevents the lock from binding or jamming.
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Barrett Suzanne Dino
Kepler III John W.
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