Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
November 2, 2010
Patent Application Number
11644841
Date Filed
December 26, 2006
Patent Primary Examiner
Patent abstract
A rotation machine is configured such that permanent magnets and pole shoes holding the permanent magnets at the outer diameter side of the permanent magnets are provided for a rotor, and an outer diameter size (Ra) in the axial end portion of the pole shoe is made smaller than an outer diameter size (Rb) in the axial center portion.
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