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:
Sep. 13, 2005
Filed:
May. 29, 2002
Michael Hötger, Berlin, DE;
Jens Kleemann, Berlin, DE;
Axel Riepe, Berlin, DE;
Walter Thiele, Bonn, DE;
Michael Hötger, Berlin, DE;
Jens Kleemann, Berlin, DE;
Axel Riepe, Berlin, DE;
Walter Thiele, Bonn, DE;
SGL Carbon AG, Wiesbaden, DE;
TEA GmbH Technologiezentrum Emissionsfreie Antriebe, Berlin, DE;
Abstract
A pair of sliding elements for machine parts exposed to high-pressure and high-temperature steam, preferably piston-cylinder arrangements for steam engines. The first sliding element is produced from a synthetic, fired but not graphitized carbon material which comprises graphitized carbon black and/or natural graphite as significant filler and whose pores are filled with metal, metal alloy, a ceramic, synthetic resin and/or pitch which has been carbonized, preferably in the form of a piston and/or piston ring. The second sliding element, preferably in the form of a cylinder liner or guide bush, comprising an iron-containing, high-temperature-resistant material which is preferably alloyed with chromium and/or nickel and is provided at least on the surface layer with a nitride layer.