Servo valve

Details Servo valve Servo valve

1997-03-24

1998-12-08

Richter, Sheldon J.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

F15B 1301, B62D 5083

Patent

active

058455574

ABSTRACT:
In a servo valve for hydraulic power steerings of motor vehicles which consists of a rotary spool valve having a rotary spool rotatably disposed in a control sleeve, a front end of the control sleeve and a flange structure on the rotary spool have spaced oppositely arranged faces forming a gap therebetween in which a C-shaped spring is disposed which extends around the rotary spool and has free opposite ends in engagement with pins projecting axially toward one another from the opposite faces of the control sleeve and the flange structure when both are in a center position relative to one another so as to bias the control sleeve and the flange structure into such center position with a predetermined spring force.

REFERENCES:
patent: 2983283 (1961-05-01), Sattavara
patent: 4458580 (1984-07-01), Masuda et al.
patent: 4488475 (1984-12-01), Masuda et al.
patent: 5311906 (1994-05-01), Phillips
patent: 5478059 (1995-12-01), Toyoshi et al.

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