Gear pump
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United States of America Patent
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Apr 29, 1997
Grant Date -
N/A
app pub date -
Jul 7, 1995
filing date -
Jul 14, 1994
priority date (Note) -
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Abstract
Problematic noise levels in a hydraulic gear pump are overcome by exerting a radial force on the two shafts with which the gears are associated. The force has a direction and a strength that will combine with the resultant of the pressure forces and gear tooth contact forces, thereby eliminating backlash between the teeth. The system can be mechanical or hydraulic, and is incorporated either into the pump body or into pressure-balanced bearing blocks.
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