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:
May. 18, 2021
Filed:
Jul. 19, 2016
Ntn Corporation, Osaka, JP;
Yoshinori Ito, Ama-gun, JP;
Hajime Asada, Ama-gun, JP;
Hiroshi Akai, Kuwana, JP;
Kei Hattori, Kuwana, JP;
NTN CORPORATION, Osaka, JP;
Abstract
A sliding member () includes an iron and steel-based sintered compact containing chromium, molybdenum, and carbon and having a content of chromium, of 5 mass % or less. The sliding member () includes: a compound layer () which has a sliding surface () and is formed mainly of an iron and steel nitride; and a diffusion layer () which is adjacent to the compound layer () and has an iron and steel structure into which nitrogen and carbon diffuse. The concentrations of carbon and nitrogen in the diffusion layer () are gradually reduced with increasing depth from the sliding surface ().