Fluid-pressure and analogous brake systems – Speed-controlled – Having a valve system responsive to a wheel lock signal
Patent
1978-04-17
1980-06-10
Eisenzopf, Reinhard J.
Fluid-pressure and analogous brake systems
Speed-controlled
Having a valve system responsive to a wheel lock signal
303119, B60T 802
Patent
active
042069505
ABSTRACT:
A brake system for a vehicle having at least one wheel assembly comprises a master cylinder which is operable by an operator to communicate pressurized fluid to a wheel cylinder on the wheel assembly, thereby braking a rotatable member of the wheel assembly. The brake system also includes a pressure storage member and a pump which communicates pressurized fluid thereto. If a skidding condition is imminent, a control unit cooperates with a modulator valve to reduce the pressure communicated to the wheel cylinder, and when skidding is no longer imminent, the control unit cooperates with the modulator valve to communicate the pressure storage member to the wheel cylinder to reapply braking. If a spinning condition is evident, the control unit cooperates with the modulator valve to communicate the pressure storage member with the wheel cylinder of the wheel assembly thereby retarding rotation of the spinning rotatable member. In particular, a reservoir supplies fluid to the pump and the master cylinder, and the wheel cylinder is vented to the reservoir by the modulator valve upon an imminent skidding condition or at the termination of a spinning condition.
REFERENCES:
patent: 3532391 (1970-10-01), Klein
patent: 3582152 (1971-06-01), Burckhardt
Decker Ken C.
Eisenzopf Reinhard J.
Schoenle Paul David
The Bendix Corporation
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