Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1985-09-16
1991-01-22
Reger, Duane A.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
303 225, B60T 830
Patent
active
049866095
ABSTRACT:
A load sensing proportioning valve system for the hydraulic brake system of passenger cars and the like for varying the amount of brake fluid pressure and thus the braking torque at the rear brakes of a passenger car. The system includes a load sensor oriented between a suspension component, such as a supporting spring, and the vehicle frame or body and includes a cavity for incompressible fluid in which variation in load will vary the volume of the cavity for providing increased pressure and volumeric flow of an incompressible fluid from the cavity to a proportioning valve incorporated into the hydraulic brake lines extending from the master cylinder to the rear brakes of a passenger car for regulating the proprotioning valve to vary the braking pressure and thus braking torque to the rear wheels to reduce or eliminate premature rear wheel locking when applying brakes of a lightly loaded vehicle and to maintain adequate braking force for the same vehicle when heavily loaded. A flexible line interconnects the load sensor and the proportioning valve to compensate for relative movement between the vehicle frame and suspension system and the proportioning valve includes an actuator in the form of a actuating piston engageable with the proportioning piston in the proportioning valve to regulate the movement of the proportioning piston and thus regulate the proportioning valve in response to variations in load applied to the rear suspension components of the vehicle.
REFERENCES:
patent: 2933048 (1960-04-01), Bock
patent: 3122265 (1965-03-01), Randol
patent: 3169800 (1965-02-01), Oberthur
patent: 3171333 (1965-03-01), Mandy
patent: 3525554 (1970-08-01), Oberthur
patent: 3712684 (1973-01-01), Cordiano
Christopher Neil B.
Cole Joe S.
Reger Duane A.
Surfaces, Inc.
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