Submersible pump utilizing magnetic clutch activated impeller
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United States of America Patent
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May 13, 2014
Grant Date -
Mar 1, 2012
app pub date -
May 25, 2011
filing date -
May 25, 2010
priority date (Note) -
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Abstract
A pumping apparatus comprises a rotatable shaft coupled to a motor. At least one control structure is mounted on the shaft, and at least one impeller is carried by the shaft. The impeller is adapted to rotate independently of the shaft so as to pump a fluid. The apparatus also comprises a magnetic coupling between the control structure and the impeller. Further, the impeller is adapted to translate axially along the shaft in response to a change in downstream pressure to alter the strength of the magnetic coupling.
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