Lever lock safety device

Details Lever lock safety device Lever lock safety device

1983-10-28

1986-06-10

Wolfe, Robert L.

Locks

Operating mechanism

Predetermined time interval controlled

70283, 70354, E05B 4300

Patent

active

045935459

ABSTRACT:
The levers (5) of a lock which retain a bolt (3) in its locking position are prevented from moving to release the bolt by a latching member (12) in its latching position. The latching member (12) is movable along a guide (10) to an unlatching position by action of a solenoid (15). Insertion of the key (6) into the lock operates a switch (20) which actuates a timer operating the solenoid after a delay.

REFERENCES:
patent: 457872 (1891-08-01), Simon
patent: 908813 (1909-01-01), Stevens
patent: 3642313 (1972-02-01), Anderson
patent: 4095827 (1978-06-01), Stavenau

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