Brakes – Operators – Fluid pressure
Patent
1989-04-10
1990-06-19
Butler, Douglas C.
Brakes
Operators
Fluid pressure
303 89, B60T 1716
Patent
active
049344927
ABSTRACT:
An automatic brake locking system, for locking the brakes of a vehicle having a hydraulic brake system, is operated every time the ignition switch is turned off to apply pressure through an auxiliary brake actuating device to lock the brakes and hold them locked until the auxiliary brake actuating device is released. A safety switch is provided to operate in conjunction with the ignition switch; so that the safety switch and the ignition switch both must be operated to an "on" position to release the auxiliary brake actuating device to allow normal operation of the vehicle. Turning on the ignition switch without operation of the safety switch does not permit movement of the vehicle since the auxiliary brake actuating device continues to be operated. The system is a passive system, which it does not require any separate actions on the part of the vehicle operator to cause the auxiliary brake actuating device to be operated when the vehicle ignition switch is turned off.
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Butler Douglas C.
Ptak LaValle D.
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