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:
May. 08, 2007
Filed:
Jun. 07, 2004
Gottfried Schnaitmann, Backnang, DE;
Gottfried Schnaitmann, Backnang, DE;
Mahle GmbH, Stuttgart, DE;
Abstract
The invention relates to a piston (), which is comprised of an approximately circular cylindrical upper area () and of a lower area (), having two hubs (), which are set back toward the piston central axis () so that, in the upper area (), recesses () can be made, which are open toward the lower area (), in the vicinity of the hubs (). In order to make relief cuts () in the area between the hubs () and the upper area (), a salt mold part () is placed on the respective window insert (). The salt mold part () serves to produce the recesses () as well as the relief cuts () when casting the piston () and is washed out after the piston () has been cast.