Fluid pump
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United States of America Patent
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Dec 17, 2013
Grant Date -
May 27, 2010
app pub date -
Nov 5, 2009
filing date -
Nov 24, 2008
priority date (Note) -
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Abstract
A pump for pumping a fluid comprises an inlet, an outlet, an internal volume disposed between the inlet and the outlet, a first pumping arrangement operable to pump a first volume of fluid from the inlet into the internal volume, and a second pumping arrangement operable to pump a second volume of fluid from the internal volume into the outlet. In a first mode of operation of the pump, the first volume of fluid is greater than the second volume of fluid such that, in use, the pressure of the fluid within the internal volume is elevated to a level above the pressure of the fluid at the inlet.
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