Hydraulic actuator for a servo of a gear change and corresponding method of fabrication
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United States of America Patent
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N/A
Issued Date -
Dec 13, 2007
app pub date -
Feb 16, 2007
filing date -
Feb 17, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Described herein is a hydraulic actuator for a servo of a gear change provided with a control shaft; the hydraulic actuator displaces the control shaft axially along a central axis thereof, is set in a position corresponding to an intermediate portion of the control shaft, and has two chambers, which are alternatively filled with a pressurized fluid, are traversed by the control shaft, and are separated from one another by a flange, which is fitted on the control shaft and defines a piston of the hydraulic actuator; the control shaft has at least one row of seats, which are uniformly distributed along a circumference and around the central axis of the control shaft; and the flange has at least one lateral lip, which is set above the row of seats and is deformed in a position corresponding to each seat in order to engage the seat.
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