Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2005-09-13
2005-09-13
Waks, Joseph (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S156410, C310S156450, C310S156480, C310S156610
Reexamination Certificate
active
06943474
ABSTRACT:
A brushless DC motor including a stator having plural slots; and a rotor which has plural permanent magnets and is divided into three rotor blocks in a rotation axis direction, the three rotor blocks being layered so that the arrangement angles of the rotor blocks differ from each other by an amount of a mechanical angle in a rotary direction that is equivalent to one third of a pulsation period of cogging torque generated by the rotor and stator. A brushless DC motor including a rotor having plural magnetic poles provided at an equal pitch in a circumferential direction by mounting permanent magnets in magnet mounting holes; and a stator having plural slots arranged at an equal pitch in a circumferential direction. The magnetic poles of the rotor include magnetic poles whose magnet deviation angle formed by the central line of an effective polar opening angle and the central line of the magnet mounting hole is the first angle; and magnetic poles whose magnet deviation angle is the second angle different from the first angle.
REFERENCES:
patent: 4769567 (1988-09-01), Kurauchi et al.
patent: 4841186 (1989-06-01), Feigel et al.
patent: 5010266 (1991-04-01), Uchida
patent: 5313159 (1994-05-01), Allwine, Jr.
patent: 5463262 (1995-10-01), Uchida
patent: 5886440 (1999-03-01), Hasebe et al.
patent: 6087751 (2000-07-01), Sakai
patent: 6525442 (2003-02-01), Koharagi et al.
patent: 6552459 (2003-04-01), Burton
patent: 6777847 (2004-08-01), Saban et al.
patent: 41 33 723 (1993-04-01), None
patent: 10016002 (2000-11-01), None
patent: 03245761 (1991-11-01), None
patent: 08251847 (1997-01-01), None
patent: 09051643 (1997-06-01), None
patent: 09182331 (1997-11-01), None
patent: 11098793 (1999-07-01), None
patent: 2000116084 (2000-09-01), None
Horie Tetsuo
Inayama Hirohide
Ishihara Atsushi
Jonokuchi Hideki
Kitabayashi Minoru
Darby & Darby
Koyo Seiko Co. Ltd.
Waks Joseph
LandOfFree
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