Hydraulic brake system, in particular for motor vehicles

Details Hydraulic brake system, in particular for motor vehicles Hydraulic brake system, in particular for motor vehicles

1992-11-18

1993-12-07

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Pipeless valves

188349, 303 963, 303 975, 3031161, 3031191, 3031155, 303900, B60T 826, B60T 832

Patent

active

052677826

ABSTRACT:
A hydraulic brake system having an anti-skid system in which its rear axle brake circuit has a pressure control device switchable by a control pressure; if the anti-skid system should fail, this device reduces the brake pressure in the rear wheel brake cylinders. The hydraulic brake system includes the pressure control device which acts as a proportional pressure regulating valve and is switchable by a pressure prevailing on a master brake cylinder side of a return pump; if the anti-skid system should fail, this device reduces the pressure of the pressure fluid in the wheel brake cylinders by a fixed proportion compared with the pressure toward the master brake cylinder. The pressure control device has a very simple, compact design and is especially suitable for use in the rear axle brake circuit of a motor vehicle.

REFERENCES:
patent: 4618189 (1986-10-01), Nakanishi et al.
patent: 4647114 (1987-03-01), Schuett et al.
patent: 4703979 (1987-11-01), Nakanishi et al.
patent: 4752104 (1988-06-01), Miyake
patent: 4957330 (1990-09-01), Morikawa et al.
patent: 5039176 (1991-08-01), Hellmann et al.
patent: 5118164 (1992-06-01), Rossigno et al.
patent: 5127713 (1992-07-01), Birkenbach
patent: 5178442 (1993-01-01), Toda et al.

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