Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1991-05-06
1992-12-22
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
188349, B60T 832
Patent
active
051729571
ABSTRACT:
In a fluid pressure control apparatus for a vehicle which includes a main body in which an input opening is formed in communication with a master cylinder side and an output opening is formed in communication with a wheel cylinder side, a stepped bore made in the main body, in communication with the input opening and output opening; a stepped piston slidably fitted into the stepped bore, a poppet type movable body for limiting fluid flowing from the wheel cylinder side towards the master cylinder side in response to a predetermined length movement of the stepped piston; a path for connecting the input opening side of the stepped piston with the output opening side of the stepped piston; and a valve for closing the path in response to a movement longer than the predetermined length. For controlling the stepped piston movement, there are provided a first spring for always urging the stepped piston in a direction to open the valve and a second spring for urging the stepped piston in the direction to open the valve whenever the movement longer than the predetermined length has occurred.
REFERENCES:
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patent: 4893878 (1990-01-01), Cole et al.
patent: 5018796 (1991-05-01), Ishimaki et al.
Nippon Air Brake Co., Ltd.
Oberleitner Robert J.
Ryther James P.
Young Lee W.
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