Patent ID: 7205695

Claim:
A rotor assembly for an electromechanical machine, comprising: a rotor; a plurality of stacks of laminated pole pieces, the stacks being circumferentially disposed about said rotor; a plurality of magnets wherein a respective one of said magnets is disposed between a respective adjacent pair of said stacks of laminated pole pieces; a first means for retaining each of said magnets between each adjacent pair of said stacks of laminated pole pieces; and a second means for retaining each of said stacks of laminated pole pieces on said rotor, wherein the first means does not include any of the pole pieces and is not a part of the second means, whereupon rotational movement of said rotor, said magnets are prevented from moving radially by said first means without mechanical interaction between the first means and the stacks of laminated pole pieces, and said stacks of laminated pole pieces are prevented from moving radially by said second means.