Electronic time lock

Details Electronic time lock Electronic time lock

1988-08-19

1989-10-24

Gall, Lloyd A.

Locks

Operating mechanism

Predetermined time interval controlled

E05B 4300

Patent

active

048753513

ABSTRACT:
An electronic time lock for bank vault doors and the like having a door bolting mechanism including a snubber bar, the time lock including a lock case, an intermediate vertical partition located in said chamber between front and rear walls of the case, the rear wall and intermediate partition having surfaces defining cylindrical guide bores for reciprocating movement of the snubber bar therein. A pair of electric motors are arranged in side-by-side relation on the intermediate partition to drive a blocking member through a pair of drive trains between blocking and release position for blocking the snubber bar against movement to an unlocking position and releasing the snubber bar. A printed circuit board is provided having a solid state visible display strip for displaying programmed instructions and information regarding the state of the time lock aligned with a window in the front wall of the case for viewing of the displayed information therethrough and a plurality of electrical switch program buttons are located on the front wall of the lock case.

REFERENCES:
patent: 213809 (1879-04-01), Chinnock
patent: 428852 (1890-05-01), Myers
patent: 3835679 (1974-09-01), Heinemann et al.
patent: 3950678 (1976-04-01), Brewer
patent: 4062210 (1977-12-01), Uyeda
patent: 4137738 (1979-02-01), Marold
patent: 4655061 (1987-04-01), Nishikawa et al.

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