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:
Feb. 15, 2022
Filed:
Dec. 26, 2017
Nidec Corporation, Kyoto, JP;
Yasuaki Nakahara, Kyoto, JP;
Takeshi Honda, Kyoto, JP;
Junichi Uno, Kyoto, JP;
Takayuki Migita, Kyoto, JP;
Hiroshi Kitagaki, Kyoto, JP;
Tsuyoshi Nakamura, Kyoto, JP;
NIDEC CORPORATION, Kyoto, JP;
Abstract
A method of manufacturing a rotor core, the method including laminating first laminated steel plates in an axial direction. The first laminated steel plates each include a plurality of flake portions arranged in a circumferential direction with gaps between each other and a plurality of protrusions protruding radially outward from an outer side surface of a base portion and each having at least a portion located in the gap between the flake portions. The method further includes fixing the base portions to each other and fixing the flake portions to each other. The method further includes removing the protrusions of the laminated steel plates radially outward.