Hydraulic master cylinder

Details Hydraulic master cylinder Hydraulic master cylinder

1978-08-22

1980-10-28

Hershkovitz, Abraham

Power plants

Pressure fluid source and motor

Pulsator

60574, 60591, 303 6C, B60T 1120

Patent

active

042299403

ABSTRACT:
A twin-piston (e.g. tandem) master cylinder is provided for a split braking system having disc brakes on some wheels of a vehicle and drum brakes on others. A delay valve is incorporated in the master cylinder for the supply to the disc brakes, the delay valve having a valve member controlled by one of the master cylinder pistons to initially shut-off the supply of fluid to the disc brakes after the piston has moved a short distance. A plunger moves against a control spring to re-open the supply to the disc brakes above a predetermined pressure.

REFERENCES:
patent: 2277292 (1942-03-01), Bowen
patent: 3659421 (1972-05-01), Wilson
patent: 3662552 (1972-05-01), Ochiai
patent: 3677606 (1972-07-01), Shutt
patent: 4078384 (1978-03-01), Shutt
patent: 4154260 (1979-05-01), Shutt

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