Magnet for a dynamo-electric machine

A dynamo-electric magnet for a dynamo-electric machine comprising:

• a plurality of magnetic poles disposed substantially into a circular shape, said poles disposed opposite a plurality of teeth disposed substantially in a circular shape, the poles and teeth separated by an axial gap in the direction of a revolving shaft;
• and
• a plurality of inter-pole sections, each of said inter-pole sections extending between adjacent magnetic poles among the plurality of magnetic poles in a circumferential direction and connecting the adjacent magnetic poles, each of said inter-pole sections defining a boundary between adjacent magnetic poles, said boundary bisecting each of the inter-pole sections, the plurality of magnetic poles and the plurality of inter-pole sections being integrally formed, a width of the inter-pole sections in a radial direction being smaller than a width of the adjacent magnetic pole in the radial direction, and a length along the radial direction from the revolving shaft to at least one of the inner periphery and the outer periphery of each of the inter-pole sections being different from the length from the shaft to a corresponding periphery of the adjacent magnetic poles in the radial direction.