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Over-mold stator assembly and process for preparation thereof

  • US 7,939,975 B2
  • Filed: 10/23/2008
  • Issued: 05/10/2011
  • Est. Priority Date: 10/26/2007
  • Status: Expired due to Fees
First Claim
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1. A stator assembly comprising:

  • (a) a stator core comprising laminated electromagnetic steel sheets and further comprising wire wound coils;

    (b) an over-molded insulator covering the stator core and being positioned between the stator core and the wire wound coils;

    wherein the over-molded insulator comprises a thermally conductive polymer composition having a thermal conductivity of at least about 0.6 W/mK; and

    (c) an adhesive component interfaced between the stator core (a) and the over-molded insulator (b);

    wherein the thermally conductive polymer composition comprises a base polymer and a filler material; and

    wherein the base polymer is selected from the group consisting of thermoplastic polymers and thermosetting polymers, and the polymer contains groups that are reactive with the adhesive component (c).

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