Permanent magnet motor

Details Permanent magnet motor Permanent magnet motor

2007-10-16

2007-10-16

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156530, C310S156540, C310S156560, C310S156570

Reexamination Certificate

active

10572702

ABSTRACT:
A permanent magnet motor has permanent-magnet-holding slots5formed in those parts of a rotor core2A which correspond to sides of an approximately regular polygon centered on an axis of the rotor core2A, permanent magnets4inserted in the respective permanent-magnet-holding slots, and four or more radially elongated slits6arranged apart from each other along each of the permanent-magnet-holding slots on an outer core outside the permanent-magnet-holding slots, characterized in that at a radially outer end, the slits are spaced approximately equally while at a radially inner end, spacing between the slits is reduced with increasing distance from a center of each permanent magnet, with the spacing at the center being the largest.

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International Search Report for PCT/JP2004/010700.
International Preliminary Report on Patentability issued by the International Bureau of WIPO on Jun. 29, 2006, for International Application No. PCT/JP2004/010700.

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