Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1995-06-20
1997-05-06
Poon, Peter M.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
188 3H, 60538, B60T 720
Patent
active
056264020
ABSTRACT:
An apparatus for simultaneously applying brakes of a trailer when brakes of a towing vehicle are applied is described. The apparatus includes a vacuum pump which communicates with a vacuum booster in a braking system of the trailer thereby providing vacuum pressure to the vacuum booster. A servomotor is linked to an activating arm that moves a plunger that acts through the vacuum booster upon a master brake cylinder of the trailer. Upon activation, the servomotor provides force to move the plunger thereby sending braking fluid from the master cylinder to brakes in the trailer. A pedal position sensor communicates with a brake pedal in the towing vehicle, whereby the brake pedal position of the towing vehicle is sensed. An encoder communicates with the pedal position sensor. The encoder receives data from the pedal position sensor regarding the brake pedal position of the towing vehicle and encodes such data. A decoder communicates with the encoder and the servomotor. The decoder receives an encoded signal from the encoder regarding the brake pedal position of the towing vehicle and sends a decoded signal to the servomotor to move the plunger in the trailer thereby creating a master to slave connection between the brake pedal of the towing vehicle and the plunger acting upon the master braking cylinder of the trailer.
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Chiles Gordon Wilbur
Lambert Anthony R.
Poon Peter M.
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