US 12,442,348 B2
Piston for an internal combustion engine
Rainer Weiss, Nuremberg (DE); Jens Lehmann, Nuremberg (DE); Michael Grabinger, Nurberg (DE); Christian Lindner, Bubenreuth (DE); Michael Scherer, Furth (DE); Ralf Meske, Schwabach (DE); and Sven Ungermann, Stuttgart (DE)
Assigned to FEDERAL-MOGUL NURNBERG GMBH, Nuremberg (DE)
Appl. No. 18/682,272
Filed by FEDERAL-MOGUL NURNBERG GMBH, Nuremberg (DE)
PCT Filed Jul. 14, 2022, PCT No. PCT/EP2022/069743
§ 371(c)(1), (2) Date Feb. 8, 2024,
PCT Pub. No. WO2023/016745, PCT Pub. Date Feb. 16, 2023.
Claims priority of application No. 10 2021 208 696.9 (DE), filed on Aug. 10, 2021.
Prior Publication US 2024/0376849 A1, Nov. 14, 2024
Int. Cl. F02F 3/28 (2006.01); F02F 3/00 (2006.01)
CPC F02F 3/28 (2013.01) [F02F 3/0084 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A piston for an internal combustion engine, comprising: at least one annular groove having an upper flank and a lower flank and configured such that, when viewed in cross-section, at least one portion of an ellipse is present between the lower flank of the annular groove and the upper flank of the annular groove.