Steering reaction force control arrangement for a power steering servo valve
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United States of America Patent
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-
Jan 4, 2000
Grant Date -
N/A
app pub date -
Apr 22, 1997
filing date -
Apr 25, 1996
priority date (Note) -
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Abstract
In a steering reaction force control arrangement for a hydraulic servo valve of a power steering system including a rotary spool rotatable received in a control sleeve and having a portion with axially extending V-shaped grooves disposed within a sleeve structure connected, by a conical engagement structure, to the control sleeve, the sleeve structure has radial bores receiving force transmitting balls which are pressed into the V-shaped grooves by a controllable hydraulic pressure so that the rotary spool can be moved relative to the control sleeve only upon the transmission of a torque sufficient to lift the force transmitting balls against the force of the hydraulic fluid by which they are pressed into the grooves.
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