OIL PUMP OF VEHICLE HAVING INNER RING
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United States of America Patent
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Issued Date -
Nov 21, 2019
app pub date -
Mar 15, 2019
filing date -
Mar 15, 2019
priority date (Note) -
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Abstract
The present disclosure provides an oil pump including a housing in which a space is formed, a rotor installed to be rotatable in an eccentric position in the housing and having vanes mounted along a circumference direction to be protruded and retracted in a radial direction of the housing, and an inner ring fitted to an inner surface of the housing and rotated along with the rotor when the rotor rotates. The housing is formed of a material harder than the material of the inner ring, and oil for lubrication is provided between the housing and the inner ring.
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