Anti-theft system for automotive vehicles

Details Anti-theft system for automotive vehicles Anti-theft system for automotive vehicles

1989-06-15

1990-02-13

Woodiel, Donald O.

Communications: electrical

Land vehicle alarms or indicators

Of burglary or unauthorized use

340550, 109 21, 109 42, B60R 2500, 109, 109

Patent

active

049010530

ABSTRACT:
A signal is received from a key having predetermined information. A discriminator determines whether the received signal from the receiver represents the predetermined information. An actuator performs a predetermined anti-theft operation in response to output signals from first and second detectors indicating that at least one predetermined one of the covering members is closed and locked. The operation of the actuator is disabled in response to an output signal from the discriminator indicating that the received signal represents the predetermined information. The key includes a magnetic element forming first predetermined information, and light emitting elements for emitting infrared ray carrying second predetermined information. The actuator performs the predetermined anti-theft operation in response to an output signal from a third detector indicating that the key has been removed from a predetermined key hole, in addition to the output signals from the first and second detectors.

REFERENCES:
patent: 3541505 (1968-03-01), Lee
patent: 3634845 (1972-01-01), Colman
patent: 3643756 (1972-02-01), Sareghy
patent: 3781854 (1973-12-01), Kaufman et al.
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patent: 3825918 (1974-07-01), Laidlaw, Jr. et al.
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patent: 4227766 (1980-10-01), Finale
patent: 4230918 (1980-10-01), Schroeder et al.
patent: 4574268 (1986-03-01), Ohnishi

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