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Casting assembly for stator coils and method

  • US 4,151,434 A
  • Filed: 04/07/1977
  • Issued: 04/24/1979
  • Est. Priority Date: 05/04/1976
  • Status: Expired due to Term
First Claim
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1. A method of encapsulating a terminal portion of a coil end turn conductor which projects from the core of a dynamoelectric machine, said method comprising:

  • securing a pad to said terminal portion, said pad having radially extending side portions which circumscribe and extend transversely to said terminal portion to provide a barrier to the axial flow of a fluid relative to said terminal portion;

    disposing a sleeve around said terminal portion in a spaced relation therewith, said sleeve having a continuous, circumferentially extending side portion bounded by said first and second open end portions, said sleeve providing a barrier to the radial flow of a fluid relative to said terminal portion, said first open end portion of said sleeve being disposed in abutting engagement with said pad, and said side portion being radially spaced from said terminal portion;

    casting a liquid potting compound into said sleeve to fill the volume defined by the combination of said pad and said sleeve whereby said terminal portion is covered by said liquid potting compound; and

    ,curing said liquid potting compound to form a hardened mass surrounding said coil end turn portion.

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