Servo valve device in power steering apparatus

Details Servo valve device in power steering apparatus Servo valve device in power steering apparatus

1975-05-30

1976-11-16

Song, Robert R.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91375A, 180147, F15B 910

Patent

active

039916561

ABSTRACT:
A servo valve device in a power steering apparatus of an automobile includes a valve housing having a main valve rotatably mounted therein for rotating in response to the movement of a hydraulic power cylinder. A flap valve member is rotatably mounted in the main valve member for controlling the supply of fluid under pressure to a pair of distribution ports from a pair of injection ports. Each of the distribution ports separately communicates with a different one of the pair of injection ports through a pair of fluid passages formed in the main valve. One of the fluid passages is connected to one chamber of the hydraulic power cylinder through an annular recess formed on the peripheral portion of the main valve member, while the other of the fluid passages is connected to the other chamber of the hydraulic power cylinder through a passage formed within the flap valve.

REFERENCES:
patent: 3657967 (1972-04-01), Suzuki
patent: 3817151 (1972-06-01), Kawabata

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