Control valve assemblies for hydraulic braking systems

Details Control valve assemblies for hydraulic braking systems Control valve assemblies for hydraulic braking systems

1978-05-25

1980-09-23

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

188354, 303 52, B60T 1506

Patent

active

042239540

ABSTRACT:
In a control valve assembly for vehicle hydraulic braking systems pressurization of a distributor chamber in a housing is controlled by a valve operating mechanism. The valve operating mechanism comprises a piston working in the distributor chamber, a recuperation port in the wall of the housing for connection to a reservoir for fluid and communicating with the chamber on one side of the piston, an axial bore through the piston providing communication between the recuperation port and an inlet passage for connection to a source of high pressure fluid, an axially movable valve member for alternate engagement with first and second axially spaced seatings, the first seating comprising a seating surrounding the opening in the piston and the second seating leading to the inlet passage, and a spring for urging the valve member normally into engagement with the second seating with the valve member spaced from the first seating.

REFERENCES:
patent: 3239034 (1966-03-01), Wilson
patent: 3900229 (1975-08-01), Husted

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