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:
Feb. 24, 2026
Filed:
Dec. 02, 2022
Applicant:
KS Kolbenschmidt Gmbh, Neckarsulm, DE;
Inventor:
Wolfgang Hanke, Nordheim, DE;
Assignee:
KS Kolbenschmidt GmbH, Neckarsulm, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02F 1/00 (2006.01);
U.S. Cl.
CPC ...
F02F 1/004 (2013.01);
Abstract
A cylinder liner () for an internal combustion engine (), comprising a middle axis (), and an inner surface () running around the middle axis (). The inner surface () comprises a first zone (), and a second zone (), which differs from the first zone. The first zone () comprises a reduced peak height Rpk of less than 0.2 μm, a core roughness depth Rk of 0.05 to 0.35 μm and a reduced groove depth Rvk of 1.5 to 2.5 μm. The second zone () comprises a reduced peak height Rpk of less than 0.2 μm, a core roughness depth Rk of 0.05 to 0.35 μm and a reduced groove depth Rvk of 0.5 to 2.5 μm.