Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1984-07-13
1986-07-08
Garrett, Robert E.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
60560, 60562, 60563, 60591, B60T 844, B60T 1120, B60T 1358, F15B 700
Patent
active
045989559
ABSTRACT:
An actuating device for a vehicle hydraulic brake system of the type having electromagnetically operated valves in the hydraulic circuits to each wheel brake for providing slip control wherein the device includes a master cylinder having a brake pedal force responsive hydraulic booster piston for actuating a master cylinder piston slidably mounted within a slidable positioning sleeve within the bore of the master cylinder. The positioning sleeve is adapted to be mechanically coupled to the booster piston in the brake actuation direction. A stationary projection on the interior end of the master cylinder protrudes into the positioning sleeve and cooperates with the sleeve and master cylinder piston to vary the master cylinder volume. A hydraulic change-over valve directs pressurized fluid during operation of the slip-control valves to the positioningsleeve in opposition to the actuating force to reset the brake pedal and supply pressurized fluid to the wheel brake lines to replenish fluid depleted during operation of the slip control cycle.
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Belart Juan
Burgdorf Jochen
Breh Donald J.
Garrett Robert E.
IT&T Industries, Inc.
Kapsalas George
Raden James B.
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