Method for producing a ring support with a sheet metal cooling channel welded thereon

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7003878
APP PUB NO 20040069263A1
SERIAL NO

10466309

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Abstract

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The invention relates to a method for producing a ring support (1) with a sheet metal cooling channel welded thereon (5), which is transfused later with an aluminium melt for producing a piston. The aim of the invention is to improve the production of openings (4) for supplying and removing oil. Said openings are produced even before the transfusion of the cooled ring support. When the alfin pretreament of the cooling ring supports occurs, said cooling channel is filled with melt and emptied again during removal front the alfin bath.

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Patent Owner(s)

Patent OwnerAddress
MAHLE GMBHPRAGSTRASSE 26-46 70376 STUTTGART

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ullrich, Michael Moeglingen, DE 18 100

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