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:
Dec. 13, 2016
Filed:
Nov. 06, 2012
Volker Gniesmer, Alfed, DE;
Emmerich Ottliczky, Forchtenberg-Ernsbach, DE;
Gunter Bayer, Mockmuhl, DE;
Volker Gniesmer, Alfed, DE;
Emmerich Ottliczky, Forchtenberg-Ernsbach, DE;
Gunter Bayer, Mockmuhl, DE;
KS Kolbenschmidt GmbH, Neckarsulm, DE;
Abstract
A piston of an internal combustion engine, includes a piston upper part and a piston lower part which are supported via corresponding joining webs, in each case forming a joining zone connected in a material-to-material manner by means of a multi-orbital rotary friction weld. The joining webs and which are in each case directly connected have a wall thickness S, Swhich is identical as far as possible. The piston encloses a combustion-chamber recess and at least one cooling duct which are made centrally or eccentrically in the piston. The combustion chamber recess and the cooling duct form a circular contour or a contour which deviates from a circular shape.