Electrically operated door lock

Details Electrically operated door lock Electrically operated door lock

1999-10-22

2001-12-04

Estremsky, Gary (Department: 3627)

Closure fasteners

Keepers

With movable dog, catch or striker

C292SDIG002, C720S724000

Reexamination Certificate

active

06325429

ABSTRACT:

ELECTRICALLY OPERATED DOOR LOCK
The present invention is directed to an electrically operated door release system and more particularly to an improved solenoid actuated system where the locking mechanism retains a latch keeper in locking position to prevent opening of the door. It is specifically designed for use on many different types of doors where the latch keeper can be bypassed by normal operation of the latch, or by solenoid actuation of a locking, mechanism which normally retains the latch keeper in locking position.


REFERENCES:
patent: 297096 (1884-04-01), Woehrle
patent: 322681 (1885-07-01), Casey
patent: 358417 (1887-02-01), Summers
patent: 3804442 (1974-04-01), Powers
patent: 3861727 (1975-01-01), Froerup
patent: 4017107 (1977-04-01), Hanchett
patent: 4211443 (1980-07-01), Butts et al.
patent: 4633688 (1987-01-01), Beudat et al.
patent: 4840050 (1989-06-01), Gotanda
patent: 5076625 (1991-12-01), Oxley
patent: 5127691 (1992-07-01), Herron
patent: 5484180 (1996-01-01), Helmar

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