Master cylinder

Details Master cylinder Master cylinder

2005-01-11

2005-01-11

Look, Edward K. (Department: 3745)

Power plants

Pressure fluid source and motor

Pulsator

Reexamination Certificate

active

06840043

ABSTRACT:
A master cylinder that can sufficiently compensate for an ineffective fluid amount at an initial stage of a stroke, even at a time of sudden braking in a case where a hydraulic control unit is disposed between the master cylinder and a brake device, is provided. The master cylinder includes a control valve that releases hydraulic pressure in a large diameter pressurizing chamber to a reservoir side when the hydraulic pressure in the large diameter pressurizing chamber reaches a fluid-release pressure corresponding to hydraulic pressure introduced via a branched flow path that branches from a communication flow path that connects a hydraulic control unit and a small diameter hydraulic chamber. A restrictor is disposed in the branched flow path for introducing the hydraulic pressure to the control valve.

REFERENCES:
patent: 5557935 (1996-09-01), Ganzel
patent: 6578360 (2003-06-01), Mouri et al.
patent: 6698202 (2004-03-01), Ogiwara et al.

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