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. 26, 2020
Filed:
Sep. 09, 2016
Applicant:
Caterpillar Inc., Peoria, IL (US);
Inventors:
Michael Pollard, Peoria, IL (US);
Indrajith Kizhakkethara, Dunlap, IL (US);
Hugh McLean, Lebanon, IN (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02F 3/00 (2006.01); B23K 20/12 (2006.01); B23K 20/227 (2006.01); C22C 38/40 (2006.01); F02F 3/22 (2006.01); F02F 3/26 (2006.01); B23K 101/00 (2006.01); B23K 103/04 (2006.01);
U.S. Cl.
CPC ...
F02F 3/003 (2013.01); B23K 20/129 (2013.01); B23K 20/227 (2013.01); C22C 38/40 (2013.01); F02F 3/0084 (2013.01); F02F 3/22 (2013.01); F02F 3/26 (2013.01); B23K 2101/003 (2018.08); B23K 2103/04 (2018.08); B23K 2103/05 (2018.08); C21D 2211/008 (2013.01); F02F 2003/0061 (2013.01);
Abstract
A piston for an internal combustion engine includes a compound piston body having a crown piece joined to a skirt piece by a circumferential weld. The skirt piece is formed of a lower temperature-capable steel such as a low alloy steel, and the crown piece is formed of a higher temperature-capable steel having a martensitic microstructure and containing about 10% wt. or greater of chromium. Related methodology for making a piston is also disclosed.