The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 2011
Filed:
Mar. 03, 2009
Masayuki Okubo, Kiryu, JP;
Mikio Kawamura, Kiryu, JP;
Masayuki Okubo, Kiryu, JP;
Mikio Kawamura, Kiryu, JP;
Mitsuba Corporation, Gunma, JP;
Abstract
In a brushless motor including a rotor having 2poles and a stator having 3slots, 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°.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile