Latch monitor

Details Latch monitor Latch monitor

1996-12-11

1998-05-26

Hofsass, Jeffery

Communications: electrical

Condition responsive indicating system

Specific condition

340545, 292340, 292DIG60, 200 6168, E05B 4506

Patent

active

057572690

ABSTRACT:
A closure latch or bolt monitoring device having a housing mountable in a closure frame which housing receives a latch or bolt. A pivotal rocker plate is normally biased to a rest position in which a flange portion of the rocker engages a switch connectable to an alarm system. When a latch or bolt is extended into the housing, the rocker plate is pivoted causing it to disengage from the switch providing an indication to the alarm system that the bolt or latch is properly engaged in the closure. An alternate embodiment allows separate monitoring of two lock components such as a separate bolt and latch.

REFERENCES:
patent: 4248463 (1981-02-01), Hand
patent: 4465997 (1984-08-01), Hines
patent: 5065136 (1991-11-01), Frolov et al.
patent: 5243325 (1993-09-01), Marin et al.
patent: 5257841 (1993-11-01), Geringer et al.

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