Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1978-07-27
1980-06-17
Reger, Duane A.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
303 84A, B60T 826
Patent
active
042080746
ABSTRACT:
A hydraulic pressure control system for brakes for use within motor vehicles includes a split or dual type braking system having two brake lines. A metering valve is disposed within the front brake line so as to delay the build-up of pressure within the front disc brakes for a predetermined period of time in order to permit the rear drum brakes to be initially actuated, and a pressure-control valve is similarly disposed within the rear brake line for supplying a controlled or limited fluid pressure to the rear wheel brakes from the master cylinder. In the event of a hydraulic failure within the rear brake line, the metering function of the metering valve is immediately discontinued and full braking pressure is supplied to the front wheel brakes, from the master cylinder, without an initial delay in the build-up of pressure therewithin, and similarly, if a hydraulic failure occurs within the front brake line, the pressure control function of the pressure control valve is immediately discontinued and full braking pressure is likewise supplied to the rear wheel brakes, from the master cylinder, without control or limitation thereof. An electrical, failure-warning system is also incorporated within the system so as to be operatively associated with the pressure-control and metering valves thereof.
REFERENCES:
patent: 3480333 (1969-11-01), Stelzer
patent: 3661426 (1972-05-01), Tam
patent: 3669506 (1972-06-01), Papin et al.
patent: 3719382 (1973-02-01), Ayers, Jr.
patent: 3737603 (1973-06-01), Kish et al.
Aisin Seiki Company Limited
Reger Duane A.
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