Anti-theft device for motor vehicles

Details Anti-theft device for motor vehicles Anti-theft device for motor vehicles

1984-05-01

1986-06-24

Love, John J.

Motor vehicles

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

By preventing unauthorized or unintended access or use

70252, B60R 2502

Patent

active

045963037

ABSTRACT:
An anti-theft system for a motor vehicle which comprises a key lock 20 connected to an ignition control switch 22 for locking the ignition control switch in an engine idle position with the motor vehicle engine running. The vehicle steering 14 and transmission 15 mechanisms are also locked when the ignition control switch is in the idle position and the key is removed. The anti-theft system also comprises a theft prevention system activation switch 64 having open and closed positions which is electrically connected to the vehicle's ignition system 70 and a second switch 60 which is selectively connected to ground. The theft prevention system activation switch 64 and the transmission linkage mechanism 18 are connected to the second switch 60 such that when the transmission is connected to the engine the second switch closes to complete a circuit path between ground 61 and the theft prevention system activation switch 64. Therefore when the theft prevention system activation switch 64 is in the closed position and the transmission is connected to the motor the ignition system 70 is connected to ground. The theft prevention system can also be modified for use with the fuel cut valve 159 of diesel vehicles.

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patent: 4258560 (1981-03-01), Jessop
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patent: 4380752 (1983-04-01), Reynolds

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