Tandem master cylinder with booster piston at pedal-remote end o

Details Tandem master cylinder with booster piston at pedal-remote end o Tandem master cylinder with booster piston at pedal-remote end o

1987-02-05

1989-10-31

Garrett, Robert E.

Power plants

Pressure fluid source and motor

Pulsator

60561, 60562, 60588, 60593, B60T 1124, B60T 1128, B60T 1312, B60T 1314

Patent

active

048768537

ABSTRACT:
A tandem master cylinder with a booster used for a hydraulic actuator such as an automotive brake system. The master cylinder has a first and a second independently movable presser piston disposed in tandem in a first housing such that the presser pistons and the first housing define a first and a second pressure chamber. The booster has a first power piston advanced by a fluid pressure in a first power chamber formed in a second housing, to advance the first presser piston. The booster has a valve operable due to a relative movement between the first power piston, and an operating member for operating said booster, whereby the fluid pressure in the first power chamber is controlled according to an operating force applied to the operating member. In a third housing, there is disposed a second power piston, which has opposite pressure-receiving faces one of which receives a fluid pressure in the second pressure chamber, the other face receiving a fluid pressure in a second power chamber, whereby the fluid pressure in the second pressure chamber is controlled according to the fluid pressure in the second power chamber. The second power chamber is connected to the first power chamber.

REFERENCES:
patent: 3815364 (1974-06-01), Belart et al.
patent: 3827242 (1974-08-01), Belart
patent: 4086770 (1978-05-01), Shaw
patent: 4225022 (1980-09-01), Belart
patent: 4294070 (1981-10-01), Farr
patent: 4472940 (1984-09-01), Kubota
patent: 4483144 (1984-11-01), Steffes
patent: 4586591 (1986-05-01), Belart
patent: 4678243 (1987-07-01), Leiber

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