Theft prevention device for automobiles

Details Theft prevention device for automobiles Theft prevention device for automobiles

1988-09-13

1990-06-12

Crosland, Donnie L.

Communications: electrical

Land vehicle alarms or indicators

340426, 340429, 340430, 307 103, 307 106, B60Q 100, B60R 2504

Patent

active

049336649

ABSTRACT:
An automobile theft prevention device has an alarm circuit for intermittently energizing a horn, a sensor for detecting a monitored action; and a control unit for controlling the alarm circuit so as to intermittently energize the horn when the monitored action is detected by means of the sensor during a period of time after an automobile door is locked according to a predetermined procedure and until the automobile door is properly unlocked.

REFERENCES:
patent: 3858175 (1974-12-01), Kopera, Jr.
patent: 3866168 (1975-02-01), McGuirk, Jr.
patent: 3997870 (1976-12-01), Horvath
patent: 4205300 (1980-05-01), Ho et al.
patent: 4543568 (1985-09-01), Hwang

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