Anti-skid brake pressure control system with common solenoid val

Details Anti-skid brake pressure control system with common solenoid val Anti-skid brake pressure control system with common solenoid val

1978-10-05

1981-05-26

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303 6R, 303119, B60T 802

Patent

active

042694566

ABSTRACT:
An anti-skid brake pressure control system which includes a first brake pressure supply line communicating a first source of a tandem master cylinder with a first wheel cylinder, a second brake pressure supply line communicating a second source of the tandem master cylinder with a second wheel cylinder, a cut off valve mechanism arranged within the first supply line and normally maintained in a open position, a servo member having a power piston to thereby define first and second chambers, a solenoid valve mechanism actuated in response to a wheel locking condition to thereby create a pressure differential between the first and second chambers and to thereby activate the power piston, a brake pressure reducing member including a pressure reducing piston movable in response to movement of the servo member to reduce an effective volume of a variable bore, and a pressure reducing valve mechanism operated in response to movement of the pressure reducing piston to bring both of the wheel cylinders into communication with the variable volume bore.

REFERENCES:
patent: 3556609 (1971-01-01), MacDuff
patent: 3588190 (1971-06-01), Nakano et al.
patent: 3741612 (1973-06-01), Ando
patent: 3809437 (1974-05-01), Inada et al.
patent: 4022514 (1977-05-01), Kondo et al.

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