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. 28, 2007
Filed:
Sep. 02, 2004
Rolf-gerhard Fiedler, Wendlingen, DE;
Rolf-Gerhard Fiedler, Wendlingen, DE;
Mahle GmbH, Stuttgart, DE;
Abstract
The invention relates to an oil scraper ring for pistons of internal combustion engines, said oil scraper ring comprising a disc () provided with a bearing surface (h) having an asymmetrical crowned form with a vertex line () extending over the periphery of the disc. Said disk () is arranged in a ring groove () of the piston and respectively has a ring groove side () opposing the piston head and a parallel ring groove side () facing the piston head. The aim of the invention is to achieve an improved oil scraping action compared to that of prior art, while reducing the friction and the abrasion of the bearing surface.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile