Cell locking system

Details Cell locking system Cell locking system

1978-04-06

1979-12-25

Moore, Richard E.

Closure fasteners

Bolts

Sliding

E05C 108

Patent

active

041802870

ABSTRACT:
A dead bolt and lock bolt for a cell door have the dead bolt controlled electrically from a remote control station. The lock bolt is controlled electrically from the remote station or the door location itself. A main control lever at the control station is movable to a deadlock position for mechanically deadlocking the lock bolt in its locking position and to a release position for unlocking both the dead bolt and the lock bolt. Protective circuit means prevents the dead bolt from being moved to its extended position when the door is open and a protective deadlock latch locks the dead bolt in either its retracted position or its extended position. When the main control lever is moved to an operate position, the guard or inmate can unlock or lock the door by use of a key if the dead bolt is in its retracted position.

REFERENCES:
patent: 775186 (1904-11-01), Lovelace
patent: 2798751 (1957-07-01), Walden
patent: 3605459 (1971-09-01), Van Dalen
patent: 3890608 (1975-06-01), Peterson
patent: 3897093 (1975-07-01), Wiczer et al.

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