Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2006-09-27
2009-10-20
Le, Dang D (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S049030
Reexamination Certificate
active
07605517
ABSTRACT:
A claw pole type rotating electric machine includes first and second claw cores which are disposed on a ring shaped ring yoke portion and a plurality of claw magnetic poles which extend in the axial direction are provided, and stator cores are formed by meshing of the claw magnetic poles with each other, and the stator is formed by holding the ring coils on the outer circumference side of the claw magnetic poles, wherein the first and second claw cores are formed by powder cores, the radial direction thickness of the claw magnetic pole is 2 mm or more, a flat surface is formed perpendicular to the axial direction at the end extending in the axial direction of the claw magnetic pole, a ejection taper in the circumference direction of the claw magnetic pole is formed in the range of 10 degrees or less, and the ratio of the axial direction length of the claw magnetic pole and the axial direction thickness of the ring yoke portion is no more than 5:1.
REFERENCES:
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patent: 6031304 (2000-02-01), Suzuki et al.
patent: 7135802 (2006-11-01), Seki et al.
patent: 2005/0012427 (2005-01-01), Seki et al.
patent: 2004-068041 (2004-03-01), None
Enomoto Yuji
Ishihara Chio
Ito Motoya
Masaki Ryozo
Ohiwa Shoji
Antonelli, Terry Stout & Kraus, LLP.
Hitachi Industrial Equipment Systems Co. Ltd.
Hitachi Powered Metals Co., Ltd.
Japan Servo Co. Ltd.
Le Dang D
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