Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors
Patent
1990-08-06
1991-11-19
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Multiple fluid-receiving devices
Multiple motors
188349, B60T 826
Patent
active
050660721
ABSTRACT:
The hydraulic brake pressure control valve is provided including a valve casing mounted on a master cylinder of a hydraulic brake system. A valve piston is provided with a stepped configuration with an enlarged diameter portion and a reduced diameter portion. The valve piston is mounted slidably and longitudinally along the longitudinal bore of the valve casing. The valve piston is normally urged into a non-operating position and is shiftable longitudinally in an opposite direction from the non-operating position under the effect of a difference in the cross-sectional areas of the enlarged and reduced diameter portions, upon which hydraulic brake fluid pressure acts. The stepped valve piston is defined with a brake fluid passage extending longitudinally therein providing communication between brake fluid passages adjacent the reduced diameter portion and the enlarged diameter portion of the stepped valve piston. A fluid valve member is disposed in the fluid passage and is adapted to hold the fluid passage in an open position when the stepped valve piston is in a non-operating position and to cause the fluid valve to be opened and closed when the stepped valve piston operates in a valving manner. An arrangement is provided such that when the fluid valve is brought to either an opened or a closed position an outer wall surface associated with the valve member abuts an inner wall surface of the stepped valve piston.
REFERENCES:
patent: 4475339 (1984-10-01), Inoue
patent: 4574834 (1986-03-01), Inoue
patent: 4664451 (1987-05-01), Sakaguchi et al.
patent: 4668020, Barr
patent: 4669268 (1987-06-01), Takeuchi et al.
patent: 4736989 (1988-04-01), Myers et al.
patent: 4774809 (1988-10-01), Hayashida et al.
patent: 4813450 (1989-03-01), Ishiwata et al.
patent: 4825903 (1989-05-01), Ochs et al.
patent: 4957140 (1990-09-01), Ishiwata
Kamiyoshihara Akihiro
Yamakoshi Mutsuro
Yanagi Kunio
Butler Douglas C.
Jidosha Kiki Co. Ltd.
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