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. 19, 2025
Filed:
Aug. 18, 2021
Ntn Corporation, Osaka, JP;
Shun Tamaki, Shizuoka, JP;
NTN CORPORATION, Osaka, JP;
Abstract
Provided is a rotational torque inspection method for a bearing device for vehicle wheel that enables detection of an abnormality in a component or step occurring midway in the manufacturing of the wheel bearing device. This rotational torque inspection method for a wheel bearing devicecomprises: a press-fitting step S; a post-press-fitting rotational torque measurement step Sfor measuring a rotational torque Tof the wheel bearing devicewhen, after the press-fitting step S, the hub ringand the inner ringthat are inner members and an outer ringthat is an outer member are rotated in a relative manner; and a post-press-fitting rotational torque determination step Sfor determining the fitness of the rotational torque Tby whether or not the rotational torque Tmeasured in the post-press-fitting rotational torque measurement step Sis within a range of standard values S