Brake pressure modulating valve

Details Brake pressure modulating valve Brake pressure modulating valve

1977-12-01

1980-06-24

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Load control

Responsive to fluid pressure spring

188195, 303 6C, B60T 818

Patent

active

042092000

ABSTRACT:
A hydraulic pressure control valve for a vehicle hydraulic braking system and of the type that is normally interposed between the brake master cylinder and the rear brakes so as to ensure that after a predetermined pressure is reached in the system a further pressure increase in the master cylinder produces a lesser increase in the rear brakes than in the front brakes. The predetermined pressure at which the valve begins to operate is controlled according to the load on the vehicle suspension, by a lever and control springs which are operated by changes in height of the vehicle chassis relative to the unsprung portion of the vehicle. The pressure control valve is made compact by having a control spring co-extensive with a part of the lever.

REFERENCES:
patent: 4060283 (1977-11-01), Demido et al.

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