Servo valve device in power steering apparatus

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

1976-05-11

1977-09-20

Maslousky, Paul E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91372, F15B 910

Patent

active

040489043

ABSTRACT:
A servo valve device in a power steering apparatus of a vehicle, which has a main valve member provided with two valve chambers and disposed to rotate in response to one of the action of a fluid pressure motor supplementing manual steering torque and a manual steering torque, and which has two flap valve members respectively located in the two valve chambers and disposed to rotate in response to the other of the action of the fluid pressure motor and the manual steering torque for controlling fluid under pressure for the fluid pressure motor. The two valve chambers are formed by fluid-tightly partitioning an axial slot formed within the main valve member at a plane containing the rotational axis thereof, and the two flap valve members are integrally formed with each other.

REFERENCES:
patent: 3408900 (1968-11-01), Tomita
patent: 3657967 (1972-04-01), Suzuki
patent: 3817151 (1974-06-01), Kawabata

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