Alarm system

Details Alarm system Alarm system

1991-05-02

1993-05-04

Mullen, Thomas

Communications: electrical

Condition responsive indicating system

Specific condition

70419, 70DIG49, 200 6166, 340521, E05B 4506, H01H 2706, G08B 1900

Patent

active

052085791

ABSTRACT:
An improved alarm system having a first electrode carried by at least one of the locking elements and a second electrode carried by the locking surface normally engageable by the locking elements when the locking mechanism is in its locked configuration, and an alarm system including an alarm signal generator and a plurality of event detection sensors, one of which is formed by the first and second locking elements, the sensors being coupled to the signal generator such that an event detected by any sensor causes the generator to develop an alarm signal.

REFERENCES:
patent: 3596014 (1971-07-01), Erez
patent: 3986376 (1976-10-01), Lack
patent: 4186578 (1980-02-01), Sommer
patent: 4205542 (1980-06-01), Renda
patent: 4262506 (1981-04-01), Tobel
patent: 4845471 (1989-07-01), Chu
patent: 5041814 (1991-08-01), Lin

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