Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2005-03-08
2005-03-08
Schuberg, Darren (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S156120, C310S089000, C310S254100, C310S256000, C310S256000
Reexamination Certificate
active
06864605
ABSTRACT:
Brushless motor is provided which includes an outer stator and an inner rotor having a plurality of permanent magnets. One or inner surface of the outer stator, opposed to the inner rotor, is covered with a cover formed of a magnetic material and in the shape of a cylinder of a small wall thickness. The magnetic cover has a plurality of slits inclined with respect to the rotational axis of the inner rotor. Magnetic portions formed or left between the slits of the cover are also inclined with respect to the rotational axis of the inner rotor. With such magnetic portions, boundaries between magnetic poles are virtually inclined with respect to the rotational axis of the inner rotor, so that undesired cogging torque of the motor can be minimized.
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patent: 6727629 (2004-04-01), Soghomonian
patent: 59044957 (1984-03-01), None
patent: 2001275325 (2001-10-01), None
Kuribayashi Takashi
Shimizu Yasuo
Shiobara Hitoshi
Yoneda Atsuhiko
Honda Giken Kogyo Kabushiki Kaisha
Merchant & Gould P.C.
Mohandesi Iraj
Schuberg Darren
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