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:
Jul. 01, 2025
Filed:
Feb. 07, 2020
Ntn Corporation, Osaka, JP;
NTN CORPORATION, Osaka, JP;
Abstract
In a magnet holderincluding: a shaft attachment portionto which a shaftis press-fitted and fixed; and a magnet holding portionthat is provided on one side in an axial direction of the shaft attachment portionand holds a periphery of a magnet, and provided with an undercut portionthat engages with the magnetin the axial direction on an inner peripheral surfaceof the magnet holding portionfacing the magnet, the magnet holding portionand the shaft attachment portionare integrally formed of sintered metal, an outer peripheral surface and an end surface of the magnet holding portionand an inner peripheral surface of the shaft attachment portionare sized, and the undercut portionis formed by plastic deformation of the magnet holding portion