Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 12, 2010
Patent Application Number
11816630
Date Filed
February 16, 2006
Patent Citations Received
Patent Primary Examiner
Patent abstract
Pump having a cutting impeller (38), counter knives (40) associated therewith, and a pre-chopper (48) which is driven by a shaft portion (46) that projects axially from the cutting impeller (38), characterised in that the counter knives (40) carry a cutting edge (52) that extends in longitudinal direction of the shaft portion (46).
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