Apparatus for controlling brake fluid pressure of vehicle

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4867509
SERIAL NO

07261201

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Apparatus for controlling brake fluid pressure of a vehicle includes a hold valve provided in a first fluid passage so as to control fluid communication between a fluid pressure chamber in a master cylinder and a wheel cylinder, a decay valve provided in a second fluid passage so as to control fluid communication between a wheel cylinder and a reservoir; a supply valve provided in a third fluid passage so as to control the flow of brake fluid from a fluid pressure source to the fluid pressure chamber; an intake valve normally held in its closed position to shut off the third fluid passage, and a valve operating member mounted on the piston for movement therewith, the valve operating member being engageable with the intake valve when the stroke of movement of the piston reaches a predetermined value to thereby move the intake valve to its open position. With this construction, an anti-lock control for preventing the locking of the vehicle wheels can be effected. Further, an auxiliary piston is provided for moving the first-mentioned piston to applying a braking force when a slip of the vehicle wheels reaches a predetermined level, thereby achieving a traction control.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
AKEBONO BRAKE INDUSTRY CO., LTD.TOKYO92
AKEBONO RESEARCH AND DEVELOPMENT CENTRE LTD.TOKYO6

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Maehara, Toshifumi Saitama, JP 68 318
Sakai, Takashi Saitama, JP 94 598

Cited Art Landscape

Patent Info (Count) # Cites Year
 
DAIMLER-BENZ AKTIENGESELLSCHAFT (1)
* 4726629 Hydraulic brake-power booster unit 6 1986
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
DAIMLER AG (1)
* 5158343 Method of shortening the braking distance in critical driving situations by sensing brake pedal speed 55 1991
 
ADVICS CO., LTD. (7)
* 6478385 Hydraulic brake apparatus for a vehicle 16 2001
* 6513884 Hydraulic brake apparatus for a vehicle 5 2001
* 6543860 Hydraulic pressure brake device 0 2001
* 6705682 Hydraulic brake apparatus for a vehicle 11 2002
* 2003/0071,518 Hydraulic brake apparatus for a vehicle 5 2002
* 6957871 Vehicle brake device 9 2003
* 2004/0108,770 Vehicle brake device 2 2003
 
AKEBONO RESEARCH AND DEVELOPMENT CENTRE LTD. (5)
* 5071201 Brake hydraulic pressure control apparatus 1 1990
* 5069508 Brake hydraulic pressure control apparatus 1 1990
* 5080449 Hydraulic brake pressure controlling apparatus for a vehicle 2 1990
* 5171072 Brake hydraulic pressure generator 6 1990
* 5098172 Hydraulic brake pressure generation apparatus for a vehicle 4 1990
 
MID-AMERICA COMMERCIALIZATION CORPORATION (1)
* 5029948 Trailer anti-swing system and method 15 1989
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (1)
* 6805415 Brake device 6 2001
 
ALLIED-SIGNAL INC. (1)
* 5456525 Valve for traction control 3 1994
 
EATON CORPORATION (1)
* 5033798 Trailer brake anti-swing system and method 21 1989
* Cited By Examiner