Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1992-03-03
1993-05-04
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303 87, 3031161, 3031191, 303900, 303 68, 303901, B60T 832
Patent
active
052074862
ABSTRACT:
A braking system for a vehicle which includes a master cylinder, and a wheel cylinder for braking a wheel with a brake fluid pressure supplied from the master cylinder. A pulsating-pressure absorbing apparatus is arranged between the master cylinder and the wheel cylinder. The pulsating-pressure absorbing apparatus includes a main body, an inlet formed in the main body and connected to the master cylinder, an outlet formed in the main body and connected to a side of the wheel cylinder, and a stepped hole formed in communication with the inlet and outlet. A stepped plunger is slidably fitted into the stepped hole, and a check valve is arranged in a path defined within the plunger for permitting brake fluid to flow from the inlet towards the outlet and for inhibiting brake fluid from flowing from the outlet towards the inlet. A throttle is arranged in the path for limiting brake fluid flowing from the side of the outlet towards the side of the inlet whereby, when the stepped plunger is located at a first position adjacent the outlet, the throttle is operative, and when the stepped plunger is located at a second position adjacent the inlet, the throttle is inoperative and the check valve is opened for permitting brake fluid to flow freely between the inlet and outlet. A spring is provided for urging the stepped plunger towards the inlet.
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Butler Douglas C.
Nippon Air Brake Co., Ltd.
Ryther James P.
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