US Patent 7663272 Motor housing and cooling fin assembly

A motor housing and cooling fin assembly for an electric motor comprises a stator support having a longitudinal base and a series of fin plates protruding radially from the base, the fin plates for directing fluid coolant through the motor, a cylindrical support sleeve comprising a thin wall, the thin wall containing a series of slots for receiving distal ends of the fin plates; and a motor housing having a cylindrical inner wall, the support sleeve positioned between the stator support and the motor housing in an interference fit.