Liquid pressure operated braking system

Details Liquid pressure operated braking system Liquid pressure operated braking system

1984-04-13

1987-04-21

Bonck, Rodney H.

192 clutches and power-stop control

Clutch and brake

Vehicle type

137598, B60K 4124

Patent

active

046589422

ABSTRACT:
A liquid pressure operated braking system comprises a valve assembly with a first valve operatively coupled to a clutch pedal for confining the liquid pressure applied to the associated group of wheel cylinders when the clutch pedal is depressed and a second valve. The second valve includes a stepped piston having a large pressure acting area and a small pressure acting area and an elastomeric valve body adapted to close a valve bore when the stepped piston assumes a predetermined position. The valve body defining a third pressure acting area when the second valve is closed which is exposed to the liqiud pressure in the valve bore. The valve bore is connected to the associated source of liquid pressure, i.e., a tandem master cylinder.

REFERENCES:
patent: 2131944 (1938-10-01), Freeman
patent: 2223717 (1940-12-01), Coffman
patent: 4247154 (1981-01-01), Shoji et al.

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