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:
Apr. 06, 2021
Filed:
Feb. 16, 2018
Ntn Corporation, Osaka, JP;
Takashi Kawai, Shizuoka, JP;
Masaya Takaoka, Shizuoka, JP;
NTN Corporation, Osaka, JP;
Abstract
A tapered roller bearing includes an inner ring having a large flange surface, and tapered rollers having roller large end surfaces. The large flange surface has an arithmetic mean roughness Ra of 0.1 μm≤Ra≤0.2 μm. The large flange surface further has a roughness curve skewness Rsk of −1.0≤Rsk≤−0.3, and a roughness curve kurtosis Rku of 3.0≤Rsk≤5.0. The tapered roller bearing is capable of realizing both stable rotation torque while the bearing is rotating at a low speed, and excellent resistance.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile