Multistage centrifugal chopper pump

  • US 5,460,483 A
  • Filed: 02/08/1995
  • Issued: 10/24/1995
  • Est. Priority Date: 05/26/1992
  • Status: Expired due to Term
First Claim
Patent Images

1. In a centrifugal pump having a bladed impeller rotatable about an axis, a pump casing including a bowl receiving the impeller blades and having an inlet side for intake of material into the pump bowl, the pump casing including an intake plate extending across the inlet side of the pump bowl, the improvement comprising a hub rotated with the impeller and extending through the intake plate, generally axially outward from the impeller blades, said hub having an abrupt projection in close cutting relationship with at least a portion of said intake plate as the impeller is rotated.

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