Hydraulic master cylinder

Details Hydraulic master cylinder Hydraulic master cylinder

1978-08-15

1980-05-06

Hershkovitz, Abraham

Power plants

Pressure fluid source and motor

Pulsator

60578, 60591, 303 6C, B60T 1120

Patent

active

042010551

ABSTRACT:
A tandem master cylinder for a vehicle split hydraulic braking system which has disc brakes in one half of the system and drum brakes in the other. One of the pistons in the master cylinder is prevented from developing a substantial pressure until a predetermined pressure has been developed by the other piston by virtue of a quantity of fluid trapped in a control chamber by a control piston. First and second valve means control the pressure in the control chamber. The valve means include a plunger which initially moves against a first control spring to allow a valve member to seat and trap the fluid in the control chamber and subsequently moves away from the valve member under an increased pressure in the control chamber against a second control spring to release the trapped fluid.

REFERENCES:
patent: 2031360 (1936-02-01), Boughton
patent: 2190238 (1940-02-01), Lepersonne
patent: 3051530 (1962-08-01), Ayers, Jr.
patent: 3232058 (1966-02-01), Ayers, Jr.
patent: 4027482 (1977-06-01), Manzini
patent: 4117681 (1978-10-01), Falk

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