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:
Jun. 15, 2010
Filed:
Oct. 28, 2005
Yasuhiro Endo, Okazaki, JP;
Ryoji Mizutani, Aichi-ken, JP;
Kazutaka Tatematsu, Nagoya, JP;
Kenji Harada, Aichi-ken, JP;
Toshiya Yamaguchi, Aichi-ken, JP;
Eisuke Hoshina, Toyota, JP;
Yasuhiro Endo, Okazaki, JP;
Ryoji Mizutani, Aichi-ken, JP;
Kazutaka Tatematsu, Nagoya, JP;
Kenji Harada, Aichi-ken, JP;
Toshiya Yamaguchi, Aichi-ken, JP;
Eisuke Hoshina, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
In a stator core composed of a powder compacted magnetic body, a yoke part comprises a protrusion protruding from an axial end face of a tooth. The tooth has an axial length gradually decreases towards an outside along the radial direction of the stator core, and a circumferential length which gradually increases towards an outside along the radial direction of the stator core. In one of the cross sections of stator core perpendicular to a radial direction, the height difference between axial end faces of the yoke part and the tooth is substantially equal to an axial length of a coil end part. Further, a cross-sectional area of the tooth perpendicular to the radial direction is substantially maintained constant along the radial direction, and the cross-sectional area is secured at a junction between the tooth and the yoke part, while half of the cross-sectional area is secured in a circumferential cross section of the yoke part.