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. 07, 2022
Filed:
Jan. 23, 2020
Applicant:
Komatsu Ltd., Tokyo, JP;
Inventors:
Yusuke Imadu, Tokyo, JP;
Toshiyuki Iseki, Tokyo, JP;
Takaaki Sasaki, Tokyo, JP;
Motomi Mizugai, Tokyo, JP;
Assignee:
KOMATSU LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H 57/08 (2006.01); C21D 5/00 (2006.01); C21D 1/18 (2006.01);
U.S. Cl.
CPC ...
C21D 5/00 (2013.01); C21D 1/18 (2013.01); F16H 57/082 (2013.01);
Abstract
A machine component, made of steel or cast iron and having a circular hole that opens in a first surface, includes a plurality of first quench-hardened regions that include the first surface and are arranged apart from each other along a first circle surrounding the hole when viewed in a plane in a direction perpendicular to the first surface, and a base region that is a region other than the first quench-hardened regions.