Ducted cooling arrangement for hydrostatic pumps
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United States of America Patent
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N/A
Issued Date -
Sep 28, 2006
app pub date -
Mar 24, 2005
filing date -
Mar 24, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A hydrostatic pump assembly having an improved cooling arrangement. The pump assembly includes a hydrostatic pump having a housing which rotatably supports a drive shaft, and a fan is coupled to an external end of the drive shaft for rotation therewith. The housing includes a plurality of integrally formed, elongated fins which define a plurality of passages extending along the housing in a direction substantially parallel to the drive shaft. The housing also includes a flange at an end thereof proximate the cooling fan, the flange including at least one duct therethrough. The flange is secured to a wall of an implement with the housing disposed on one side of the wall and the cooling fan the opposite side of the wall. In operation, cooling air is drawn by the fan through the passages along the housing, and passes through the flange ducts at a relatively high velocity before being discharged radially from the fan on the side of the wall opposite the housing, thereby providing an enhanced cooling effect for efficient cooling of the pump.
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