| 摘要 |
A wheel lock designed for vehicle theft prevention and comprising a valve interposed in the brake fluid line to at least one wheel brake of the vehicle. By closing the valve while the vehicle brake pedal is depressed, fluid under pressure is trapped between the valve and the brake, locking the wheels. Preferably, the valve comprises a camshaft operatively connected to a key operated rotary lock, a valve piston disposed within a housing and displaced by the camshaft, and a valve seat counterbored in a cover attached to the housing. A separate locking piston actuated by brake fluid under pressure and a solenoid respectively insure that the valve can be closed only when the brakes are applied and when the vehicle ignition system is off.
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