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. 02, 2021
Filed:
May. 03, 2017
Applicant:
KS Kolbenschmidt Gmbh, Neckarsulm, DE;
Inventors:
Klaus Lormes, Bad Wimpfen, DE;
Willi Sikorsky, Neckarsulm, DE;
Assignee:
KS Kolbenschmidt GmbH, Neckarsulm, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02F 3/20 (2006.01); F02F 3/00 (2006.01);
U.S. Cl.
CPC ...
F02F 3/003 (2013.01); F02F 3/0015 (2013.01); F02F 3/20 (2013.01); F02F 2003/0061 (2013.01);
Abstract
A piston for use in an internal combustion engine having a two-piece construction including an upper and a lower part. The upper and the lower parts include one or more overlapping cutouts to reduce the weight of the piston. One or more of the cutouts or connecting walls include wall regions that transition to adjacent walls without sharp or abrupt areas. The piston upper and lower parts are permanently joined together. One or more tongue and groove structures are used to provide a locking connection between the piston upper and lower parts.