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:
Oct. 27, 2009
Filed:
Apr. 25, 2005
Haruhisa Toyoda, Itami, JP;
Kazuhiro Hirose, Itami, JP;
Atsushi Sato, Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A stator core includes first and second annular dust core pieces. Each of the first and second annular dust core pieces has a plurality of arcuate dust core pieces each integrally having a yoke extending in an arc shape and a tooth projecting in a radial direction of the yoke. The plurality of arcuate dust core pieces are each disposed along a circumferential direction of the yoke and joined together, and the first and second annular dust core pieces are stacked in a height direction and joined together. Thereby, an increase in size of a pressing machine can be suppressed, good magnetic properties can be obtained, and handling can be facilitated.