Electrohydraulic servomechanism
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United States of America Patent
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-
Jan 25, 1983
Grant Date -
N/A
app pub date -
Mar 5, 1980
filing date -
Mar 17, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A servomechanism in which the mutual angular position of a threaded spindle relative to a tap is adjustable by a stepper motor wherein the unit of the threaded spindle and tap is connected directly or indirectly with a hydraulic working unit, the servomechanism includes a ball bearing arranged between the spindle and the tap. Consequently, by actuating the stepper motor to which the tap is connected via a coupling, the tap being rotated and moved in axial direction relative to the spindle, thereby actuating a switching mechanism connected to the working unit by which the spindle is caused to rotate. Accordingly, the relative axial movement between the spindle and the tap is compensated and the working unit is in a different position.
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