Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1993-05-27
1996-04-23
Swann, Glen
Communications: electrical
Condition responsive indicating system
Specific condition
340506, 340546, 340566, 340636, 340693, G08B 1308, G08B 1314
Patent
active
055107745
ABSTRACT:
An independent alarm system which is carried by a housing member designed to be located adjacent to or within building openings, and at various other site locations, or adjacent to specific to-be-protected objects. The housing member is free standing, for example, swingably suspended from a window frame, ceiling or a separate frame. The housing member has an agitation sensor and a proximity or tilt sensor incorporated therein and electrically wired to a first signal. When the housing member is agitated while in its original position, or when it is moved from its original position to a second position, the agitation sensor and/or the proximity/tilt sensor is activated, which in turn causes the first signal to be actuated. The agitation and proximity/tilt sensors are both battery powered. By being pulsed, the alarm circuit may be always "on", yet be fully operational for a period of thirty six months, and greater using a single set of batteries. In preferred embodiments, the pulsed alarm circuit includes an indicator, such as an LED, to indicate whether the system is operating, and also to indicate whether the battery has nominal stored energy, low energy, or no energy. The pulsed alarm circuit also includes a tampering sensor which, when triggered, causes a second signal to be activated.
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Margolis Donald W.
Swann Glen
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