Charge pump
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United States of America Patent
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-
Mar 11, 2008
Grant Date -
N/A
app pub date -
Jan 16, 2007
filing date -
Jul 24, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A charge pump for hydraulic drive device such as a hydrostatic transmission or integrated hydrostatic transaxle using hydraulic porting having first and second pressure sides mounted in a sump to connect a hydraulic pump and motor. The charge pump comprises a body connected between the first and second pressure sides of the porting to pull hydraulic fluid from a charge sump to the low pressure side of the porting, when the second pressure side is under low pressure.
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