Vehicle anti-theft system

Details Vehicle anti-theft system Vehicle anti-theft system

1988-10-07

1990-08-28

Marmor, Charles A.

Motor vehicles

With means for promoting safety of vehicle, its occupant or...

By preventing unauthorized or unintended access or use

303 89, 188353, B60R 2508

Patent

active

049517767

ABSTRACT:
A vehicle anti-theft system is activated by a magnetically coded card and associated card reader to activate a normally closed solenoid valve which is connected in the brake line to permit normal operation of the vehicle, the valve being closed when unoperated, preventing brake fluid to return to the master cylinder, whereby the brakes of the vehicle are locked, preventing operation of the vehicle. The valve has its fluid inlet connected to the brake line and its fluid outlet connected to the outlet of the master brake cylinder.

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patent: 3559755 (1971-02-01), Pond
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patent: 4438752 (1984-03-01), Cheung
patent: 4471852 (1984-09-01), Schield et al.
patent: 4540154 (1985-09-01), Kolchinsky et al.
patent: 4790345 (1988-12-01), Kolchinsky

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