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:
Aug. 22, 2000
Filed:
Nov. 06, 1998
Applicant:
Inventors:
Assignee:
Mahle GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02F / ;
U.S. Cl.
CPC ...
123 4135 ;
Abstract
A cooled ring carrier assembly for the piston of an internal combustion engine, comprising a metal-sheet cooling duct welded to a ring carrier. The cooling duct is press-fit into the inwardly-pointing surfaces of the ring carrier prior to welding. The angle between the inwardly pointing surface of the ring carrier, to which surface metal-sheet cooling duct is welded, and the metal-sheet cooling duct is smaller than 45.degree.. This allows the cooling duct to be press fit into the ring carrier rather than being shrunk in by temperature differences between the ring carrier and cooling duct.