Synchronous motor
AssigneeSeikosha Co., Ltd.
InventorsKenji Oshima, Tomohisa Matsumoto, Hiroshi Yamazaki, Tamotsu Yoshioka
Life of this patent
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Abstract
A stator has a pair of magnetic pole portions, and a rotor having N- and S-poles is disposed between the two magnetic portions. Each magnetic pole portion of the stator has two static magnetic poles and a cut-away portion or indent formed therebetween. The stator is quadripolar statically, and bipolar dynamically.
Claims4
A synchronous electric motor comprising a stator having two spaced stator arms with like magnetic pole portions formed at fore ends thereof and opposing each other, an energizing coil on said stator, and a rotor rotatably disposed between said magnetic pole portions and having a pair of N- and S-poles, each of said magnetic pole portions having two static magnetic poles at equal distance from said rotor and an indent between said poles spaced at a greater distance than said poles from said rotor, whereby said stator is quadripolar statically and bipolar dynamically.
Dependencies are inferred from the claim text.