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Apparatus for generating a vortex in a melt

  • US 4,940,214 A
  • Filed: 03/16/1989
  • Issued: 07/10/1990
  • Est. Priority Date: 08/23/1988
  • Status: Expired due to Term
First Claim
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1. An impeller for imparting a vortex to the molten metal of a melt, said impeller comprising a shank;

  • a generally circular side wall located concentric to the shank and having a hollow interior which opens upwardly, the side wall having a radially outwardly presented surface provided with segments that are arranged circumferentially around the wall and deviate from a true circular configuration in that their midportions are set inwardly from it, the side wall also having apertures which open out of its at the segments and provide communication between the hollow interior and the exterior of the impeller; and

    connecting means extended between the shank and the side wall for joining the shank and side wall, so that the two will rotate as a unit.

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