Door lock device with anti-theft mechanism

Details Door lock device with anti-theft mechanism Door lock device with anti-theft mechanism

1995-08-25

1997-10-28

Boucher, Darnell M.

Locks

Operating mechanism

Using a powered device

2923363, 292DIG65, 292DIG23, 292201, 70280, E05C 306, E05C 1300, E05B 4700

Patent

active

056807830

ABSTRACT:
A door lock device having an anti-theft mechanism comprises a motor adapted to change a locking lever into a locking position by a normal rotation thereof in a predetermined amount, to change an anti-theft member into an anti-theft position by a continuous normal rotation thereof over the predetermined amount, and to return the anti-theft member to an anti-theft canceling position by a reverse rotation thereof. A controller has a locking operation of changing the locking lever into the locking position by using the motor, an anti-theft operation of changing the anti-theft member into the anti-theft position by using the motor, and an anti-theft canceling operation of changing the anti-theft member into the anti-theft canceling position by using the motor. If the anti-theft position of the anti-theft member is detected after performing the locking operation, the controller performs the anti-theft canceling operation.

REFERENCES:
patent: 4904006 (1990-02-01), Hayakawa et al.
patent: 4932277 (1990-06-01), Beaux
patent: 5285186 (1994-02-01), Chen
patent: 5351042 (1994-09-01), Aston
patent: 5438855 (1995-08-01), Ikeda
patent: 5441317 (1995-08-01), Grude et al.
patent: 5474339 (1995-12-01), Johnson
patent: 5503441 (1996-04-01), Schwaiger
patent: 5516167 (1996-05-01), Hayakawa et al.
patent: 5531488 (1996-07-01), Yoshikuwa et al.
patent: 5534846 (1996-07-01), Kuroda
patent: 5538298 (1996-07-01), Ikeda

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