Split discharge vane pump and fluid metering system therefor
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United States of America Patent
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Oct 2, 2012
Grant Date -
Dec 16, 2010
app pub date -
Jun 11, 2009
filing date -
Jun 11, 2009
priority date (Note) -
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Abstract
A split discharge vane pump is disclosed having a pump body that includes an interior pumping chamber having a central axis and defining a continuous peripheral cam surface, the cam surface including four quadrantal cam segments, wherein diametrically opposed cam segments have identical cam profiles, and each cam segment defines an inlet arc, a discharge arc and two seal arcs. A rotor is mounted for axial rotation within the pumping chamber and a plurality of circumferentially spaced apart radially extending vanes are mounted for radial movement within the rotor, wherein the plurality of vanes define an equal number of circumferentially spaced apart buckets which extend between the rotor and the cam surface of the pumping chamber for carrying pressurized fluid.
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