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:
Jul. 02, 2019
Filed:
Jul. 02, 2015
KS Kolbenschmidt Gmbh, Neckarsulm, DE;
Matthias Laqua, Bad Wimpfen, DE;
Volker Lehnert, Obereisesheim, DE;
KS Kolbenschmidt GmbH, Neckarsulm, DE;
Abstract
The invention relates to a cooling-channel piston for an internal combustion engine, having an upper part and a lower part, wherein the upper part and the lower part are connected to one another by way of a cohesive joint in the form of a weld seam, and the upper part and the lower part form an annularly encircling cooling channel which is arranged approximately behind a ring section, wherein a gap geometry is provided between a lower edge of the ring section and an upper edge of the lower part, wherein the gap geometry has at least one sliding surface which is arranged on a lower edge of the ring section of the cooling-channel piston and/or on the corresponding upper edge of the lower part of the cooling-channel piston, and to several methods for the operation of a cooling-channel piston.