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:
Nov. 17, 2020
Filed:
Oct. 27, 2017
Applicant:
Mahle International Gmbh, Stuttgart, DE;
Inventors:
Klaus Keller, Lorch, DE;
Rainer Scharp, Vaihingen, DE;
Assignee:
Mahle International GmbH, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02F 3/00 (2006.01); F02F 3/16 (2006.01); F02F 3/22 (2006.01); B23K 20/12 (2006.01); B23K 26/21 (2014.01); B21K 1/18 (2006.01); B23K 101/00 (2006.01);
U.S. Cl.
CPC ...
F02F 3/16 (2013.01); B21K 1/185 (2013.01); B23K 20/12 (2013.01); B23K 20/129 (2013.01); B23K 26/21 (2015.10); F02F 3/22 (2013.01); B23K 2101/003 (2018.08); F02F 2003/0061 (2013.01);
Abstract
A method for manufacturing a piston of an internal combustion engine from a piston upper part and a piston lower part may include producing at least the piston lower part as a forged steel part. A partial cross section of a cooling duct may be provided in the piston lower part. A closed supply inlet funnel may be forged within the piston lower part. The closed supply inlet funnel may be bored into the piston lower part from the cooling duct. A borehole may be introduced into the piston lower part obliquely to a piston axis. The piston lower part and the piston upper part may be welded to one another.