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:
Jun. 19, 2018
Filed:
Oct. 01, 2007
Manfred Fischer, Leichlingen, DE;
Ralf Lammers, Wermelskirchen, DE;
Christiane Bauer, Burscheid, DE;
Steffen Hoppe, Overath, DE;
Manfred Fischer, Leichlingen, DE;
Ralf Lammers, Wermelskirchen, DE;
Christiane Bauer, Burscheid, DE;
Steffen Hoppe, Overath, DE;
Federal-Mogul Burscheid GmbH, Burscheid, DE;
Abstract
The invention relates to a piston ring which is produced from a carrier material, especially steel or a cast material. The piston ring has a wear-resistant coating from a periodic multilayer system, every periodicity consisting of at least two individual metal nitride layers. The multilayer system has superlattice structures, the thickness of an individual layer being ≥2 nm to <15 nm and the thickness of the multilayer system being >4.5 μm and adjacent individual layers within the periodicity having different metallic elements.