Pump and pump impeller
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 14, 2013
Grant Date -
Jul 8, 2010
app pub date -
May 30, 2008
filing date -
Jun 1, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A pump assembly that includes a pump housing defining an inlet for receiving fluid to be pumped and an outlet for discharging fluid. A rotatable impeller operatively coupled to a drive motor includes a plurality of vane structures integrally formed with a shroud. Each vane structure includes a curved, axial vane segment extending axially from the shroud. A compound, multi-step auxiliary vane extends transversely from each axial vane segment. The auxiliary vane or wing includes at least first and second sections, with the second section overlying the first section in a staggered configuration such that the trailing edges of the first and second sections are spaced apart to form a step. The second auxiliary vane section includes an axial surface that also forms a working vane surface for the auxiliary vane.
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