Aftermarket installable dual sensitivity shock detector

Details Aftermarket installable dual sensitivity shock detector Aftermarket installable dual sensitivity shock detector

1994-06-20

1995-10-17

Crosland, Donnie L.

Communications: electrical

Land vehicle alarms or indicators

Of burglary or unauthorized use

340566, 340665, 340692, 340689, 340568, 340429, 200 6145R, 200 52A, 73 1DV, 73DIG1, B60R 2510, G08B 1300

Patent

active

054594472

ABSTRACT:
An aftermarket mechanical shock detector for mounting to protected property containing an existing alarm system. The shock detector incorporates a piezoelectric transducer detecting mechanical vibration and generating an electrical vibration signal, and circuitry for comparing the vibration signal to thresholds. The shock detector includes two separately adjustable thresholds. If the vibration signal exceeds either threshold, the shock detector creates an electrical connection between two terminals, thereby triggering a previously-installed alarm circuit to create an alarm.

REFERENCES:
patent: 4584569 (1986-04-01), Lopez et al.
patent: 4864288 (1989-09-01), Cross
patent: 5185593 (1993-02-01), DuRand, III et al.
Bulldog Security, Inc., advertisement flyer for Bulldoy 2001 talkinr car alarm Sep. 22, 1994.

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