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:
Oct. 29, 2019
Filed:
Mar. 13, 2015
Applicant:
Komatsu Ltd., Tokyo, JP;
Inventor:
Toshiyuki Iseki, Hirakata, JP;
Assignee:
KOMATSU LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 5/00 (2006.01); F16F 9/32 (2006.01); C23C 4/06 (2016.01); C23C 4/10 (2016.01); C22C 19/03 (2006.01); C22C 19/05 (2006.01); C22C 29/02 (2006.01); F16J 7/00 (2006.01); C23C 4/129 (2016.01); B22F 3/115 (2006.01); C22C 29/06 (2006.01); F16F 9/06 (2006.01);
U.S. Cl.
CPC ...
F16F 9/3221 (2013.01); C22C 19/03 (2013.01); C22C 19/05 (2013.01); C22C 19/056 (2013.01); C22C 29/02 (2013.01); C23C 4/06 (2013.01); C23C 4/10 (2013.01); C23C 4/129 (2016.01); F16F 9/3235 (2013.01); F16J 7/00 (2013.01); B22F 3/115 (2013.01); B22F 2998/10 (2013.01); B22F 2999/00 (2013.01); C22C 29/06 (2013.01); F16F 9/061 (2013.01); F16F 2226/02 (2013.01); F16F 2230/0023 (2013.01); Y10T 428/12056 (2015.01); Y10T 428/12063 (2015.01); Y10T 428/12576 (2015.01); Y10T 428/12944 (2015.01);
Abstract
The cylinder rod of a hydraulic cylinder includes a body portion having a bar shape, and a head portion arranged at a longitudinal end of the body portion. The body portion has a coating formed on its outer peripheral surface. The coating includes, in terms of area ratio in cross section, not less than 56.1% and not more than 84.4% of a chromium carbide phase, with the remainder consisting of a nickel-based alloy phase and an oxide phase. The area ratio of the chromium carbide phase may be 61.7% or more.