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Rotor with inlet perimeters

  • US 8,409,495 B2
  • Filed: 10/03/2011
  • Issued: 04/02/2013
  • Est. Priority Date: 07/12/2002
  • Status: Expired due to Term
First Claim
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1. A rotor device for use in a molten metal pump, the device comprising:

  • a top and a bottom;

    a plurality of openings through which molten metal can pass, wherein each of the openings is defined in part by an inlet perimeter;

    a plurality of imperforate rotor blades for displacing molten metal, wherein each of the plurality of rotor blades has a leading face that includes a first portion that directs molten metal downward and a second portion beneath the first portion that directs molten metal outward, and a trailing face that includes a recess that increases the size of one of the openings to help permit molten metal to pass therethrough and into a pump chamber;

    wherein as the device is rotated, the openings, the inlet perimeters, and the rotor blades rotate.

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