Pump with cutting impeller and pre-cutter
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United States of America Patent
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Sep 18, 2012
Grant Date -
Jan 7, 2010
app pub date -
Jul 1, 2009
filing date -
Jul 5, 2008
priority date (Note) -
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Abstract
A pump includes a cutting impeller (38) and a pre-chopper (50) driven by a shaft portion (46) that projects axially from the cutting impeller (38), with the pre-chopper (50) being surrounded by an intake port (22) of the pump, the intake port having, at least on a part of its length, in the vicinity of the pre-chopper, a non-circular internal cross-section.
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