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:
Dec. 16, 2025
Filed:
May. 27, 2021
Mitsuba Corporation, Gunma, JP;
Yasushi Yoshida, Gunma, JP;
MITSUBA Corporation, Gunma, JP;
Abstract
Disclosed is a method for manufacturing a stator core including multiple teeth around which a coil is to be wound, a teeth-connecting part that connects adjacent ones of the teeth, and a first annular part having, on an inner circumferential part thereof, multiple fitting parts to be respectively fitted with the teeth. The manufacturing method includes: (a) a step for punching out, from a sheet material, an inner core (second annular part) in which the teeth and the teeth-connecting part are formed integrally; (b) a step for subjecting the sheet material, prior to the punching of the inner core, to a non-magnetization treatment in a section of the sheet material corresponding to the teeth-connecting part; and (c) a step for fitting the first annular part and the inner core by the fitting parts.