Brake pressure control device for vehicles

Details Brake pressure control device for vehicles Brake pressure control device for vehicles

1988-10-25

1990-02-06

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303113, 25112902, 25112919, B60T 802, B60T 836

Patent

active

048984345

ABSTRACT:
A brake pressure control device for vehicles is provided in a pipeline connecting a master cylinder (22) and a wheel brake (23) with an electromagnetic directional control valve (24) which is switched in a plurality of valve positions by electromagnetic force. The electromagnetic directional control valve (24) is switched between a first valve position and a second valve position. Bidirectional flow of fluid is allowed when the electromagnetic directional control valve is in the first valve position. Unidirectional flow of the fluid is allowed but reverse flow of the fluid is prevented when the electromagnetic directional control valve is in the second valve position.

REFERENCES:
patent: 3617098 (1971-11-01), Leiber
patent: 4166657 (1979-09-01), Blomberg et al.
patent: 4462642 (1984-07-01), Leiber
patent: 4557527 (1985-12-01), Stumpe
patent: 4571010 (1986-02-01), Dittner et al.
patent: 4722576 (1988-02-01), Matsuda
Japanese Patent Laying-Open Gazette No. 202142/1983, pp. 239 to 242, Laying open date: Nov. 25, 1983.

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