Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1990-08-27
1991-12-10
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303113R, B60T 842
Patent
active
050712020
ABSTRACT:
An anti-lock braking system system (ABS) pressure modulator is provided. The modulator includes a frame with a central bore fluidly exposed to a solenoid valve and to a vehicle wheel cylinder. A piston is slidably mounted within the central bore having a contact surface and a first predetermined position within the bore. A power device is actuated by a controller. A cam, moved by the power means, has a ramp surface in contact with the piston contact surface. The position of the piston within the wheel cylinder is determined by the position of the cam.
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Fabris Alroy G.
Pirrallo Frank G.
Shimanovski Bruce S.
Shrivastava Prakash C.
Umasankar Guruswamy
General Motors Corporation
Helms Ernest E.
Oberleitner Robert J.
Young Lee W.
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