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:
Apr. 22, 2008
Filed:
Sep. 01, 2004
Shigehiro Maita, Kiryu, JP;
Yoshichika Kawashima, Kiryu, JP;
Shigehiro Maita, Kiryu, JP;
Yoshichika Kawashima, Kiryu, JP;
Mitsuba Corporation, Gunma, JP;
Abstract
An electric motor has an armature rotatably accommodated inside a motor housing and a pair of magnets fixed to an inner surface of the motor housing so as to face the armature. The armature has an armature corefixed to a rotating shaft, and ten slots Sto Sformed on the armature core accommodate coils. These slots Sto Sare of four types that are different in shape, thereby enhancing a lamination factor of each coil. Also, these slots Sto Sare formed so as to be tilted in a rotating direction with respect to an axial direction of the rotating shaft. Therefore, a magnetic imbalance caused by the slots Sto Sbeing formed in varying shapes is uniformized.