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:
May. 02, 2017
Filed:
Jun. 17, 2015
Mitsui High-tec, Inc., Fukuoka, JP;
Panasonic Corporation, Osaka, JP;
Akihiro Hashimoto, Fukuoka, JP;
Tadashi Iida, Fukuoka, JP;
Kiyomi Kawamura, Osaka, JP;
Koichi Mitamura, Osaka, JP;
MITSUI HIGH-TEC, INC., Fukuoka, JP;
PANASONIC CORPORATION, Osaka, JP;
Abstract
In a method for manufacturing a laminated iron core from a thin sheet, the method includes coining the thin sheet from above to form a thinned bridge portion on an outer peripheral portion of an iron core piece, blanking the iron core piece downwardly from the thin sheet using a set of an outer-shape blanking punch and a die after forming the bridge portion, wherein the outer-shape blanking punch includes a projection portion fitted into the bridge portion when blanking, and laminating the iron core piece on another iron core piece to manufacture the laminated iron core.