Anti-theft and alarm device for a vehicle

Details Anti-theft and alarm device for a vehicle Anti-theft and alarm device for a vehicle

1978-06-07

1980-09-16

Waring, Alvin H.

Communications: electrical

Selective

Having indication or alarm

307 10AT, 180287, B60R 2504, B60R 2510

Patent

active

042232988

ABSTRACT:
The battery is connected to the terminal supplying the electrical system and the starter relay or the primary ignition circuit by a thyristor. The latter's gate is controlled by a switch. Another switch makes it possible to establish a brief short-circuit to extinguish the thyristor. Any current draw then supplies the winding of an alarm relay.

REFERENCES:
patent: 3422398 (1969-01-01), Rubin
patent: 3553641 (1971-01-01), Moragne
patent: 3878507 (1975-04-01), Medlock

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