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:
Jan. 03, 2012
Filed:
Mar. 17, 2009
Rainer Scharp, Vaihingen, DE;
Reiner Mueller, Rottweil, DE;
Helmut Edel, Rottweil, DE;
Bernd Graf, Dietingen, DE;
Stefan Kohnle, Fluorn-Winzeln, DE;
Dieter Held, Dietingen, DE;
Matthias Seifried, Herrenzimmern, DE;
Rainer Scharp, Vaihingen, DE;
Reiner Mueller, Rottweil, DE;
Helmut Edel, Rottweil, DE;
Bernd Graf, Dietingen, DE;
Stefan Kohnle, Fluorn-Winzeln, DE;
Dieter Held, Dietingen, DE;
Matthias Seifried, Herrenzimmern, DE;
MAHLE International GmbH, Stuttgart, DE;
Abstract
A multi-part piston for an internal combustion engine has an upper piston part and a lower piston part. The upper piston part and the lower piston part each have an inner and an outer support element, which elements delimit an outer circumferential cooling channel and an inner cooling chamber, whose cooling chamber bottom has an opening. The opening is closed off with a separate closure element, which has at least one cooling oil opening.