Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2005-06-14
2005-06-14
Schuberg, Darren (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
Reexamination Certificate
active
06906443
ABSTRACT:
A brushless DC permanent magnet motor having a step skewed rotor including a rotor shaft having a portion having a substantially uniform cross sectional configuration defined by N planar sides of substantially equal length and width wherein N is equal to the number of poles of the motor, first and second annular sets of N number of substantially identically shaped bread loaf magnets one of which is attached to each of the N planar sides of the rotor shaft wherein the magnets of the first set have their orientation reversed with respect to the magnets of the second set and the magnets of the first set are offset or skewed by a predetermined skew angle from the magnets of the second set of magnets to form a stepped skewed rotor.
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Magnetic Field Analysis of a Permanet Magnet Motor With a Skewed Rotor Using the Finite Element Method and a 3-D Mesh Coupling Method by Yasuto Taniguchi, Akihiko Miwa, Hiroshi Hashimoto, Koji Tani and Takashi Yamada (The Japan Research Institute, Ltd.).
A.O. Smith Electrical Products Company, the AC's & DC's of Electric Motors Title Pages and p. 37.
Hernandez Maria
Laskowsky John
Luo Jian
Eaton Corporation
Hanh Nguyen
Schuberg Darren
Ünion Maroin K.
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