Variable displacement vane pump
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United States of America Patent
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Dec 10, 2013
Grant Date -
Nov 11, 2010
app pub date -
May 4, 2010
filing date -
May 5, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A variable displacement vane pump includes, but is not limited to inlet and outlet ports in a pump body, a drive shaft rotatably mounted in the pump body, a rotor driven by the drive shaft and radially extending vanes slidably disposed in the rotor. A slide is pivotally disposed on a pivot and has a central axis eccentric to the axis of the rotor. Chambers are defined by the rotor, the vanes and the slide that are successively connected to the inlet and outlet ports. A resilient member is pivotally engaged with the slide and acts on the slide to urge the slide in one direction.
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