Cutter nut and cutter bar assembly

  • US 7,841,550 B1
  • Filed: 11/20/2007
  • Issued: 11/30/2010
  • Est. Priority Date: 11/20/2007
  • Status: Active Grant
First Claim
Patent Images

1. A cutting assembly for a chopper pump having an intake end, the assembly comprising:

  • an intake end plate having a body defining an opening to allow the passage of material there through, wherein the intake end plate attaches at the intake end of the chopper pump;

    at least one cutter bar projecting from the body of the intake end plate into the opening defined by the body of the intake end plate;

    an impeller having a plurality of impeller blades positioned adjacent the at least one cutter bar of the intake end plate; and

    ,a nut positioned within the opening of the intake end plate;

    wherein the nut comprises at least one raised cutting projection having a cutting edge formed at a junction between a first surface and an adjacent second surface, the cutting edge of the raised cutting projection providing cutting action in coordination with the at least one cutter bar.

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