Patent ID: 7157827

Claim:
A rotor comprising: a shaft defining a rotor axis; a first end portion coupled to the shaft; a pole piece defining an aperture therethrough; and a second end portion positioned to dispose the pole piece between the first end portion and the second end portion, a portion of one of the first end portion and the second end portion extending through the aperture and bonding with the other of the first end portion and the second end portion, wherein the pole piece is a first pole piece of a plurality of pole pieces, each pole piece including an aperture therethrough and arranged circumferentially around the shaft, wherein the first end portion further comprises a plurality of pins integrally-formed as part of the first end portion, and wherein each of the pins extends though one of the apertures, and wherein the first end portion comprises a plurality of fingers having a first side and a second side, the first side in contact with one of the plurality of pole pieces and the second side in contact with an adjacent one of the plurality of pole pieces.