Rotary kinetic fluid motors or pumps – Method of operation
Reexamination Certificate
2007-02-20
2010-12-28
Kershteyn, Igor (Department: 3745)
Rotary kinetic fluid motors or pumps
Method of operation
C415S199300, C415S208300, C416S001000, C416S23100A, C416S235000, C416S23600R
Reexamination Certificate
active
07857577
ABSTRACT:
A technique improves the pumping performance of a centrifugal pump in a cost-effective manner. The centrifugal pump comprises a pumping component having one or more vanes defining fluid flow paths. A passage is formed through at least one vane such that an end of the passage is exposed to a low energy flow, i.e. secondary flow, region. Each passage enables the flow of a small amount of fluid from the low energy region to an opposite side of the vane to reduce the secondary flow effects and improve pumping efficiency.
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Kershteyn Igor
McGoff Kevin B.
Schlumberger Technology Corporation
Warfford Rodney V.
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