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:
Aug. 28, 2007
Filed:
Feb. 16, 2006
Yoshihiro Harada, Tokyo, JP;
Susumu Hatano, Tokyo, JP;
Kensaku Kuroki, Tokyo, JP;
Atsushi Oohashi, Tokyo, JP;
Yoshihiro Harada, Tokyo, JP;
Susumu Hatano, Tokyo, JP;
Kensaku Kuroki, Tokyo, JP;
Atsushi Oohashi, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A method of manufacturing a stator core for a dynamo-electric machine, by preparing a cylindrical laminated body by winding into a helical shape a continuous first sheet formed by press-punching from a first magnetic steel sheet material. Preparing a plurality of second sheets having a predetermined length by press-punching from a thicker second magnetic steel sheet material. Next, chamfered portions are formed on edge portions of second recess portions by chamfering the second sheet. Then, the second sheets are bent into an annular shape and the second sheets bent into the annular shape are stacked on both axial ends of the laminated body and integrated by laser welding.