Electromechanical locking device

Details Electromechanical locking device Electromechanical locking device

1989-10-13

1991-02-19

Nicholson, Eric K.

Closure fasteners

Bolts

Sliding

29234116, E05B 5500, E05C 108

Patent

active

049937570

ABSTRACT:
This invention discloses an electromechanical bolt assembly for locking a door. A bolt, which is retracted when a solenoid is energized, moves a lever assembly which causes a latch trigger to extend into the doorway. The bolt is held in the retracted position by a detente while the door remains open. When the door is closed, it depresses the latch trigger, which operates the lever assembly, causing the bolt to disengage from the detente and extend into the locked position. This locking mechanism is well suited to high-security environments such as prisons. It is highly durable, and can be contained in a housing which allows for simple and convenient installation.

REFERENCES:
patent: 1768021 (1930-06-01), Bauerband
patent: 2390731 (1945-12-01), Oxhandler
patent: 2798751 (1957-11-01), Walden
patent: 3353383 (1967-11-01), Fish
patent: 3621686 (1971-11-01), Klein
patent: 3919869 (1975-11-01), Fromm
patent: 4099752 (1978-07-01), Geringer
patent: 4262504 (1981-04-01), Inoue
patent: 4824151 (1989-04-01), Taylor
Lock Assembly No. 122-126E-EM, Folger Adam Company, one page, Drawing #231-1200-001.

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