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:
Jan. 25, 2011
Filed:
Feb. 26, 2009
Masayuki Okubo, Kiryu, JP;
Satoru Negishi, Kiryu, JP;
Koji Nara, Kiryu, JP;
Takeshi Yamazaki, Kiryu, JP;
Masayuki Okubo, Kiryu, JP;
Satoru Negishi, Kiryu, JP;
Koji Nara, Kiryu, JP;
Takeshi Yamazaki, Kiryu, JP;
Mitsuba Corporation, Gunma, JP;
Abstract
A brushless motor has rotor cores dividedly formed as plural sections in an axial direction, segment magnets secured to outer circumferential surfaces of the rotor cores, and magnet holders secured to the rotor cores, respectively, for holding the segment magnet. Each of the rotor cores has holder-positioning grooves to which holder arms are fitted, and bridge parts formed corresponding to the holder positioning grooves. Each of the magnet holders has joint grooves fitted in the bridge parts and displaced from the holder arms by a step angle, the bridge parts being fitted in the joint grooves, thereby assembling a rotor.