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. 18, 2017
Filed:
Oct. 06, 2015
Applicant:
Jtekt Corporation, Osaka-shi, Osaka, JP;
Inventors:
Wataru Yoshida, Kashiba, JP;
Towako Matsui, Osaka, JP;
Katsuhiko Kizawa, Osaka, JP;
Takashi Sada, Kashiwara, JP;
Assignee:
JTEKT CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16C 33/62 (2006.01); F16C 33/64 (2006.01); C21D 9/40 (2006.01); C22C 38/56 (2006.01); C21D 6/00 (2006.01); C22C 38/18 (2006.01);
U.S. Cl.
CPC ...
F16C 33/62 (2013.01); C21D 6/002 (2013.01); C21D 9/40 (2013.01); F16C 33/64 (2013.01); C21D 2211/008 (2013.01); C22C 38/18 (2013.01); C22C 38/56 (2013.01); F16C 2202/04 (2013.01);
Abstract
A bearing ring formed of quenched and tempered high carbon chromium bearing steel, including an inner layer portion formed of tempered martensite or sorbite and having a Vickers hardness of more than 490 HV and 710 HV or less, and a surface layer portion formed to enclose an entire periphery of the inner layer portion, formed of tempered martensite, and having a higher hardness than the inner layer portion.