Communications: electrical – Condition responsive indicating system – Specific condition
Patent
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.
Roth Thomas E.
Wojdan Dennis E.
Hofsass Jeffery
Nelson Gregory J.
Securitron Magnalock Corp.
Tong Nina
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