Pressure control valve assembly for brake systems

Details Pressure control valve assembly for brake systems Pressure control valve assembly for brake systems

1979-03-27

1980-09-16

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

188349, B60T 1300

Patent

active

042226139

ABSTRACT:
A pressure control valve assembly in a split brake system having two separate pressure lines comprises two valve pistons subjected to pressure from separate pressure sources so as to control the outlet pressure admitted to the respective rear wheel brakes. The valve assembly further comprises two movable members each in alignment with each of two valve pistons and subjected to the pressure of two pressure lines at each end thereof and two springs each interposed between a respective piston and movable member for normally urging the piston in the valve closing direction. The hydraulic failure of one of two pressure lines causes the movable member to move in the direction wherein no biasing force of the spring may be imparted to the valve piston.

REFERENCES:
patent: 3459000 (1969-08-01), Oberthur
patent: 3976334 (1976-08-01), Farr
patent: 4026607 (1977-05-01), Hess et al.

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