Motor and motor manufacturing apparatus

Details Motor and motor manufacturing apparatus Motor and motor manufacturing apparatus

2006-02-21

2006-02-21

Mullins, Burton (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S049540, C310S254100, C310S261100, C029S596000

Reexamination Certificate

active

07002277

ABSTRACT:
Flat rolled magnetic steel sheets and strip or a die is turned in the press forming process. Rotor cores are stacked with turning through an angle which is an odd number multiple of about (360°/(number of slots in the motor×natural number n×2)) and stator cores are stacked with turning through an angle which is an odd number multiple of (360°/(number of poles in the motor×natural number n×2)). Stacking with turning through an angle which is an odd number multiple converts the phases of cogging torques into mutually opposite phases and cancels and reduces the cogging torque caused by magnetic anisotropy.

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EP Search Report for corresponding EP Application No. 04 25 1275.6-2207 Dec. 12, 2004.

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