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:
Apr. 15, 2008
Filed:
Jun. 18, 2003
Applicant:
Eberhard Bubeck, Fellbach, DE;
Inventor:
Eberhard Bubeck, Fellbach, DE;
Assignee:
MAHLE GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23P 15/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a method for producing a cooled ring carrier () for an aluminium piston pertaining to an internal combustion engine and produced according to a casting method, comprising a cooling channel () which is embodied on the rear () of the ring carrier as a downwardly open turned groove () According to the invention, salt granules are pressed into the turned groove () at a pressure of between 100 and 300 N/mm, in such a way that a salt core () is formed in the turned groove () The composite consisting of the ring carrier and the salt core is then immersed in an alfin bath.