Oil pump rotor assembly
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United States of America Patent
Stats
-
Jan 13, 2009
Grant Date -
Apr 10, 2008
app pub date -
Aug 10, 2004
filing date -
Aug 12, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rotor pump assembly is disclosed which reduces noise emitted from an oil pump while preventing pumping performance and mechanical efficiency thereof from being decreased by properly forming the profiles of teeth of an inner rotor and an outer rotor which are engageable with each other. The tooth profile of an inner rotor and/or an outer rotor has curved lines obtained by dividing a cycloid curve into two segments to be separated from each other, and in which the separated segments are smoothly connected to each other using a straight line or a curve.
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Family
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Cited Art Landscape
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