Electrical monitoring strike device

Details Electrical monitoring strike device Electrical monitoring strike device

1992-10-26

1993-11-02

Moore, Richard E.

Closure fasteners

Keepers

292DIG60, E05C 1310

Patent

active

052578410

ABSTRACT:
The lock strike device is used with closable openings and is electrically connectable to an electrical monitoring circuit so that the presence or absence of a latch or deadbolt in the device can be automatically detected. The device includes a strike box having spaced sidewalls and a closed rear end. The first sidewall and adjacent portion of the rear end define an elongated cutaway portion through which an elongated blade trigger is spring biased into the strike space. The trigger is hinged at its front end to a box connected to the front of the sidewall. The rear end of the trigger is a head which urges a spring loaded lever arm of an electrical switch mounted on the exterior of the housing rear end into an open circuit position. A movable tab extends transversely into the space from the trigger. The tab senses the presence of a latch to provide a signal to an indicator.

REFERENCES:
patent: 1965482 (1934-07-01), Walker
patent: 2193488 (1940-03-01), Morley et al.
patent: 3770930 (1973-11-01), Tang
patent: 4248463 (1981-02-01), Hand

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