Pressure modulating valves for braking systems

Details Pressure modulating valves for braking systems Pressure modulating valves for braking systems

1979-11-02

1981-11-10

Miller, J. D.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

303 22R, B60T 1300

Patent

active

042994268

ABSTRACT:
A dual pressure modulating valve unit for a motor vehicle braking system has two identical valves arranged side-by-side in a common housing, each valve being for inclusion in separate sub-systems of a split braking system. The valves are of the pressure limiting or pressure reducing type wherein the pressure at which the valves start to reduce or limit the outlet pressure is determined by a biassing load on the valve plungers. The biassing loads are provided by a beam which normally divides the load of a single biassing spring equally between each plunger. In the event of a failure in one sub-system the plunger of the valve in the other sub-system receives the full load of the spring so that the pressure at which that valve starts to limit or reduce is substantially increased.

REFERENCES:
patent: 3866984 (1975-02-01), Seip

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