Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1989-05-17
1990-07-03
Reger, Duane A.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
180197, 303103, B60T 858
Patent
active
049385437
ABSTRACT:
An integrated anti-lock braking system (ABS)/traction control (TC) braking system for a vehicle having a fluid activated brake for a wheel is provided the system in one embodiment includes a system controller for signaling the system to an ABS or TC mode, a master cylinder for delivering pressurized fluid to the wheel brake, an actuator with a longitudinal bore having a first stop. A hollow primary piston is slidably mounted within the longitudinal bore biased towards the first stop. The interior of the primary piston is fluidly connected with its exterior. A secondary piston is slidably mounted within the primary piston and movable in one direction to pressurize the wheel brake and movable in an opposite direction to relieve said wheel brake in response to the controller.
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Hammersmith Robert J.
Kade Alexander
Parker Donald L.
Quinn James F.
Reuter David F.
General Motors Corporation
Helms Ernest E.
Reger Duane A.
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