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:
Jun. 24, 2025
Filed:
Mar. 22, 2023
Applicant:
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
HITACHI CONSTRUCTION MACHINERY CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 55/06 (2006.01);
U.S. Cl.
CPC ...
F16H 55/06 (2013.01);
Abstract
This invention provides a gear component with high hardness of a surface layer in a tooth root and with the excellent bending fatigue strength. The gear component of the invention comprises a surface layer of a tooth root including a region in which the area percentage of carbides is 10% or lower and the number density of carbides is 6 pieces/10 μmor lower.