US Patent 7906880 Brushless motor with skewed rotor segments
Patent 7906880 was granted and assigned to Mitsuba Corporation on March, 2011 by the United States Patent and Trademark Office.
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Patent abstract
In a brushless motor including a rotor having 2n poles and a stator having 3n slots, segment magnets are arranged in three columns in the axial direction, thus constituting rotor poles. The segment magnets of adjacent columns, which are identical in polarity, are displaced in the circumferential direction, thus forming a three-stage step-skew structure. The skew angle θskew of each segment magnet is set to an electrical angle of 60° to 75°. The center angle of θm of each segment magnet is set to 46.8° to 52.7°.
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US Patent 07906880 Brushless motor with skewed rotor segments US Patent 7906880 Brushless motor with skewed rotor segments
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Patent Number
0790688000
Patent Number
790688000
Edits on 8 Apr, 2023
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
079068800
Date of Patent
March 15, 2011
0Patent Application Number
123798610
Date Filed
March 3, 2009
0Official Website
Patent Primary Examiner
Edits on 24 Sep, 2022
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
079068800
Date of Patent
March 15, 2011
0Patent Application Number
123798610
Date Filed
March 3, 2009
0Official Website
Patent Primary Examiner
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US Patent 07906880 Brushless motor with skewed rotor segments
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07906880
Date of patent
March 15, 2011
Patent application number
12379861
Date Filed
March 3, 2009
Patent primary examiner
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