Hydraulic brake actuator

U.S. Patent Number: 5328257

Abstract: A hydraulic brake actuator for use in an automobile brake system which includes a master cylinder to be operated by a driver and a wheel cylinder connected to the master cylinder through a hydraulic circuit for applying a braking force to a wheel. The actuator is capable of performing anti-skid control function and/or traction control function, and includes a control cylinder device having a chamber which is connected to the wheel cylinder and adapted to be selectively connected to the master cylinder and disconnected therefrom. A piston is axially displaceably accommodated in the chamber for changing the volume of the chamber. A valve device has inlet and outlet ports connected to the master cylinder and the chamber, respectively, and is operatively connected to the piston so as to be opened or closed in response to the displacement of the piston.

Inventors: Tsukamoto; Masahiro (Yokosuka, JP)

Assignee: Nissan Motor Co., Ltd. (Yokohama, JP)

Application Number: 07/872,857

Issued: 1994-07-12

Expired: 2006-07-12

Classes: 303/115.2 ; 303/117.1

Field of search: 303/115.2,113.1,115.1,115.3,115.4,117.1,113.2

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