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:
Nov. 26, 2013
Filed:
Oct. 06, 2009
Hiroaki Urano, Miyoshi, JP;
Eiji Yamada, Owariasahi, JP;
Kazutaka Tatematsu, Nagoya, JP;
Yasuhiro Endo, Okazaki, JP;
Yasuaki Tahara, Nagoya, JP;
Akihiro Tanaka, Nishio, JP;
Kenji Honda, Seto, JP;
Hiroaki Urano, Miyoshi, JP;
Eiji Yamada, Owariasahi, JP;
Kazutaka Tatematsu, Nagoya, JP;
Yasuhiro Endo, Okazaki, JP;
Yasuaki Tahara, Nagoya, JP;
Akihiro Tanaka, Nishio, JP;
Kenji Honda, Seto, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-Shi, JP;
Abstract
A stator provided with annular split stator cores, formed by stacking steel plates. Each plate includes a yoke and a stator tooth. The cores include a yoke portion a stator tooth portion. The stator is manufactured by arranging an electromagnetic steel plate between a first die and a second die. The first die has a hole shaped as a steel plate. The second die has a projection inserted into the hole and shaped as a steel plate. The steel plates are formed by the first and the second dies. In a gap between an inner surface of the first die that defines the hole and an outer surface of the projection, a gap at a part that forms the stator tooth portion is larger than a gap at a part that defines a circumferential end surface of the yoke portion located in a circumferential direction of the stator core.