Hydraulic master cylinders for vehicle braking systems

Details Hydraulic master cylinders for vehicle braking systems Hydraulic master cylinders for vehicle braking systems

1976-06-28

1982-04-13

Hershkovitz, Abraham

Power plants

Pressure fluid source and motor

Pulsator

B60T 1120

Patent

active

043241018

ABSTRACT:
A tandem master cylinder is disclosed having primary and secondary pistons which are freely movable apart, the pistons defining one wall of respective pressure chambers connected to primary and secondary braking circuits. The ratio of the effective areas of the piston are selected to lie in the range 0.2 to 0.8 resulting in the availability of the full effective area of the primary piston upon failure of the secondary system, with substantially decreased pedal travel over that required in prior systems where the pistons are freely movable apart but are of equal effective area.

REFERENCES:
patent: 3140587 (1964-07-01), Stelzer
patent: 3168351 (1965-02-01), Stelzer
patent: 3488959 (1970-01-01), Tenniswood
patent: 3752273 (1973-08-01), Haraikawa

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