Security device

Details Security device Security device

1994-05-04

1996-04-30

Crosland, Donnie L.

Communications: electrical

Land vehicle alarms or indicators

Of burglary or unauthorized use

340539, 340429, 340665, 340566, 200 52A, 200 6152, 200 6145R, B60R 2510

Patent

active

055128742

ABSTRACT:
A security device, intended for use as a temporary or permanent vehicle security device, having an intrusion detection device in the form of a pair of electrical contacts supported on a shock amplifying, rigid base and responsive to percussive-type forces for generating a detection signal. At least one of the electrical contacts is supported on a relatively stiff cantilevered arm which will not respond to small movements and vibrations, to thereby avoid generating frequent false alarms. Any contact closure signal from the electrical contacts is processed by a detection circuit which counts multiple contact closures and/or measures total closure time, thus ignoring signals generated from small forces or vibrations, thereby preventing against the source of most false alarms when generating a detection signal. The processing circuit preferably comprises a transmitter responsive to and incorporating the detection circuit and operable to transmit an intrusion signal to a remote receiver which is coupled to an alarm.

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Two-page brochure of Intellitech Industries, Inc.-"Lookout Portable Security Systems" Jan. 1993.
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