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:
Nov. 22, 2022
Filed:
Oct. 24, 2018
Ntn Corporation, Osaka, JP;
Kazunari Yamamoto, Iwata, JP;
Hayato Taniguchi, Iwata, JP;
NTN CORPORATION, Osaka, JP;
Abstract
A wheel bearing device () including: an outer member () on the inner periphery of which an outer-side rolling surface () is formed; an inner member () on the outer periphery of which an inner-side rolling surface () is formed; and a plurality of rolling bodies () interposed between the rolling surfaces () of the outer member () and the inner member (). The wheel bearing device having a spline hole () formed in a through hole () of the inner member (). The spline hole includes a guide groove (G) formed on an inner circumferential surface thereof. A guide plate (G) of a finishing broach () passes through the guide groove in the inner periphery of the spline hole ().