Anti-theft devices for automotive vehicles

Motor vehicles – With means for promoting safety of vehicle – its occupant or... – By preventing unauthorized or unintended access or use

Patent

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Details

123198B, 340 63, B60R 2504

Patent

active

044718527

ABSTRACT:
An anti-theft device for an automotive vehicle such as a car or truck having fluid pressure-operated brakes is disclosed. The device includes a lockable member that, when activated while the brakes have been applied by the driver, inhibits any substantial change in the then existing fluid pressure condition in the brake fluid pressure system of the vehicle. The brakes thus remain locked, preventing normal movement of the vehicle, even if the brake pedal is subsequently released and the engine is running. The device can also include an additional lockable member for immobilizing the brake pedal to prevent its being depressed. Optionally, the device can also include one or more electrical switches which are operated, when either lockable member is activated, to ground out the distributor and/or open the ignition circuit at a point away from the ignition lock terminals, thereby to prevent starting of the engine. Preferably a special key is provided for releasing the lockable member, and special screws, e.g. screws with non-conventional heads, can be used to assemble the device as well as to mount the operator-accessible parts of the device in the vehicle so as to make its removal or disassembly more difficult. This abstract is not to be taken either as a complete exposition or as a limitation of the present invention, however, the full nature and extent of the invention being discernible only by reference to and from the entire disclosure.

REFERENCES:
patent: 4278963 (1981-07-01), Allen
patent: 4300495 (1981-11-01), Trevino et al.

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