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Brushless DC ring motor cooling system

  • US 6,600,249 B2
  • Filed: 05/03/2001
  • Issued: 07/29/2003
  • Est. Priority Date: 05/03/2000
  • Status: Expired due to Term
First Claim
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1. A brushless DC ring motor comprising:

  • a stator assembly having an outer surface and a plurality of laminations exposed around the outer surface;

    a rotor assembly piloted on the stator assembly, the rotor assembly having a back-iron ring and a plurality of permanent magnets on an inner surface of the back-iron ring confronting the plurality of laminations exposed around the outer surface of the stator assembly;

    a shroud attachable to a fixed portion of a vehicle, the shroud including at least one mounting support, wherein the stator assembly is attached to said at least one mounting support and a cooling fan piloted on the stator assembly, the cooling fan including a support ring supporting a plurality of fan blades for sweeping an area inside the shroud.

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