Patent ID: 7646124
Filing Date: 2010-01-12
Classification: H02K

Abstract:
1. A rotor for use in a permanent magnet generator or motor, the rotor comprising: a hub having an axially extending bore for receiving a shaft; a disk extending radially from the hub; a magnet retention flange projecting axially from the disk, the flange including a plurality of axially extending retention slots intermittently displaced around a circumference of the flange; and a plurality of permanent magnets having permanent magnet retention features, wherein the permanent magnet retention features have a shape corresponding to that of the retention slots such that the retention features can be interlocked with the retention slots to restrain radial and tangential movement of the plurality of permanent magnets, but axial movement of the plurality of permanent magnets in the retention slots is uninhibited by the retention slots; wherein the retention slots and the retention features have uniform cross-sectional profiles in an axial direction.