×

Pump impeller and related components

DC
  • US 6,390,768 B1
  • Filed: 03/21/2000
  • Issued: 05/21/2002
  • Est. Priority Date: 03/22/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A pump impeller comprising:

  • a core member having a back face, a front face and a central bore extending therethrough;

    the front face of the core member defining a curved surface;

    a first blade and a second blade fixed to the front face of the core member;

    each blade having a trailing portion terminating at a trailing edge and a leading portion terminating at a leading edge;

    the leading portion of the first blade radially overlapping the trailing portion of the second blade;

    the leading portion of the second blade radially overlapping the trailing portion of the first blade;

    a first channel defined by the leading portion of the first blade, the trailing portion of the second blade, and the front face of the core member;

    a second channel defined by the leading portion of the second blade, the trailing portion of the first blade, and the front face of the core member; and

    wherein the lateral cross-sectional area of the first channel proximate the trailing edge of the second blade is smaller than the lateral cross-sectional area of the first channel proximate the leading edge of the first blade.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×