Pump
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United States of America Patent
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Apr 12, 2011
Grant Date -
Jun 7, 2007
app pub date -
Jun 19, 2004
filing date -
Jun 30, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A pump, for example, a vane-cell pump or a roll-cell pump, especially a gear pump, includes a two-stroke pump contour which includes at least one rise zone, at least one large circular area, at least one fall zone and at least one small circular area. The pump includes a rotor with radially displaceable vanes or rolls arranged in radial slits inside the pump contour.
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