Variable pump or hydraulic motor
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United States of America Patent
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Jun 28, 2011
Grant Date -
Mar 13, 2008
app pub date -
Sep 11, 2007
filing date -
Mar 11, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention concerns a variable pump or hydraulic motor with a drive shaft with a first axis of rotation and first plungers connected to the drive shaft and rotatable around the first axis of rotation. A port plate mounted in the housing can rotate around an axis intersecting the first axis, for adjusting the stroke volume. The port plate positioning drive comprises two counter-acting hydraulic actuators acting on the port plate in the direction of the first plungers.
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Family
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