Permanent magnet rotor assembly

Abstract From the Canadian patent

A rotor assembly for permanent magnet motors or dynamoelectric machines in general includes a set of laminations forming a rotor body, each lamination having a plurality of V-shaped slots therein. The laminations are rotationally skewed with respect to one another. A rotor shaft is longitudinal to the rotor body. A generally rectangular permanent magnet is disposed in each leg of the V-shaped slots the slots of each, lamination being shaped so as to receive the rectangular permanent magnet through all the skewed laminations with a minimum air gap. Each slot is generally wider at each end of each leg and tapers to a waist near the midpoint of the leg.