Importance

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Abstract

A stator core includes a cylindrical yoke and teeth that are disposed in an inner circumference surface of the yoke along its circumferential direction and that are subjected to magnetic flux from the rotor of the rotating electrical device. The teeth include a trapezoidal tooth that has a trapezoidal cross section that is taken vertically along a central axis of the yoke and an oddly shaped tooth of which a tip section has the same shape as the trapezoidal tooth and a base section from the tip section to the yoke has a different shape from the trapezoidal tooth.

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First Claim