Multi-stage fuel pump
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United States of America Patent
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May 17, 2005
Grant Date -
Nov 11, 2004
app pub date -
May 7, 2003
filing date -
May 7, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multi-stage fuel pump has a drive assembly, a pump assembly including first and second pumping elements disposed between various plates of the pump assembly, and first and second pumping channels each having an inlet and an outlet circumferentially offset from the inlet and the outlet of the other pumping channel. Desirably, the pumping channels are offset to control or orient the forces acting on the drive assembly, pumping elements and the plates of the pump assembly, including radial, axial and torsional forces.
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