Electric motor

Details Electric motor Electric motor

2008-06-03

2008-06-03

Mullins, Burton (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156320, C310S268000

Reexamination Certificate

active

07382077

ABSTRACT:
An electric motor comprises a stator (1, 5, 8) having an air-gap which extends around an axis and in which a rotating magnetic field is generated, and a rotor (11, 12, 13) comprising a shaft (11) which is rotatably held by a bearing (10) and a permanent magnet (13) which is held in said air-gap and is driven to rotate around said axis by said rotating magnetic field. The stator (1, 5, 8) is adapted to generate, in addition to said rotating magnetic field, a stationary magnetic field which is rotationally asymmetric with respect to said axis.

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Patent Abstract of Japan vol. 2003, No. 01, Jan. 14, 2003 & JP 2002 262486 A (Mitsubishi Electric Corp.) Sep. 13, 2002 abstract ; figures 1-17.
Patent Abstract of Japan vol. 1999. No. 04 , Apr. 30, 1999 & JP II 018348 A (Matsushita Electric Ind Co. Ltd) Jan. 22, 1999 abstract ; figures 1-8.
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Search Report Dated: Apr. 19, 2005.

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