Anti-theft method and apparatus for locking the brakes of a vehi

Details Anti-theft method and apparatus for locking the brakes of a vehi Anti-theft method and apparatus for locking the brakes of a vehi

1993-01-27

1994-09-06

Oberleitner, Robert J.

Fluid-pressure and analogous brake systems

Locks

188353, 137354, 1373848, 137385, 137864, 137865, B60T 1716

Patent

active

053442210

ABSTRACT:
An anti-theft device is installed in a vehicle brake line which carries braking fluid. The device defines a valve seat and a valve body adapted to close against said valve seat, the valve body having a passageway therethrough and being rotatable against said seat about an axis substantially perpendicular to the passageway, between a first position in which it permits fluid flow in one direction and inhibits fluid flow in the opposite direction, and a second position in which it permits fluid flow in both directions. The valve can easily be switched between the first and second positions, and can be locked in the first position. By allowing braking fluid to flow only toward the wheels, it will be evident that the wheel brakes, once applied, cannot, be released.

REFERENCES:
patent: 3625573 (1971-12-01), Conn
patent: 3885586 (1975-05-01), Tibbetts
patent: 4429711 (1984-02-01), Schomer
patent: 5163741 (1992-11-01), Hsiu

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