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:
Sep. 24, 2024
Filed:
Aug. 22, 2019
Komatsu Ltd., Tokyo, JP;
Nippon Steel Corporation, Tokyo, JP;
Eiji Amada, Tokyo, JP;
Kazuo Maeda, Tokyo, JP;
Naomi Kobayashi, Tokyo, JP;
Takashi Noda, Tokyo, JP;
Mamoru Hatano, Tokyo, JP;
Takafumi Amata, Tokyo, JP;
Yutaka Neishi, Tokyo, JP;
Kei Miyanishi, Tokyo, JP;
Ryoji Nishijima, Tokyo, JP;
KOMATSU LTD., Tokyo, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
A track link which is a tracked undercarriage component is made of a steel having a specific component composition, and includes a high hardness portion having a hardness of HRC 57 or more and HRC 60 or less, and a low hardness portion. The high hardness portion includes a first matrix including a martensite phase and a residual austenite phase, and first nonmetallic particles dispersed in the first matrix and including at least one species selected from the group consisting of MnS, TiCN, and NbCN, and it does not include a MCcarbide. The low hardness portion includes a second matrix including a martensite phase, and second nonmetallic particles dispersed in the second matrix and including at least one species selected from the group consisting of MnS, TiCN, and NbCN, and it does not include a MCcarbide.