Metering and proportioning valve mechanism

Details Metering and proportioning valve mechanism Metering and proportioning valve mechanism

1975-06-19

1976-09-14

Halvosa, George E. A.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

188151A, 188349, 200 82D, 303 84A, B60T 826, B60T 1722

Patent

active

039803457

ABSTRACT:
A dual hydraulic brake system incorporating a dual master cylinder for separately pressurizing the front and rear brakes of a vehicle. A pressure limiting device is positioned in the brake system for the front wheels which have disc-type brakes. The device prevents the front brakes from being energized until the rear drum-type brakes are functioning and then proportions the pressure applied to the front brakes. Also, an apparatus for providing an indication to the operator of failure of either the front or rear brakes, which apparatus will automatically reset itself upon correction of the failure, is positioned adjacent the pressure limiting device and is responsive to fluid pressure in both systems.

REFERENCES:
patent: 3480333 (1969-11-01), Stelzer
patent: 3489465 (1970-01-01), Bueler
patent: 3586384 (1971-06-01), Falk
patent: 3612618 (1971-10-01), Swanson
patent: 3614169 (1971-10-01), Bueler
patent: 3768869 (1973-10-01), Bueler et al.
patent: 3776602 (1973-12-01), Bueler
patent: 3787096 (1974-01-01), Shellhause
patent: 3817584 (1974-06-01), Huston et al.
patent: R28253 (1974-11-01), Stelzer

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