Motor

Details Motor Motor

2007-04-17

2009-12-01

Leung, Quyen (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S112000

Reexamination Certificate

active

07626299

ABSTRACT:
A motor includes a stator with an annular stator yoke, a stator core having a plurality of inner and outer teeth projecting from the stator yoke toward inside and outside respectively, a plurality of coils wound on the stator core, and an inner rotor and an outer rotor confronting the inner and outer teeth respectively via an air-gap, and having an permanent magnet respectively. The number of slots “S” and the number of poles “P” establish a relation of S:P=3:2N−1, where N is an integer equal to 1 or more, and a case when 2N−1 becomes a multiple of 3 is excluded.

REFERENCES:
patent: 6707209 (2004-03-01), Crapo et al.
patent: 6903471 (2005-06-01), Arimitsu et al.
patent: 2004/0232800 (2004-11-01), Seguchi et al.
patent: 2005/0017591 (2005-01-01), Brewster et al.
patent: 2001-37133 (2001-02-01), None
patent: 2002-165426 (2002-06-01), None
patent: 2005-521378 (2005-07-01), None
patent: 3725510 (2005-09-01), None
Japanese language International Search Report for PCT/JP2007/058318, dated Jul. 17, 2007.

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