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. 12, 2005
Filed:
Aug. 14, 2002
Walter Wirtz, Gevelsberg, DE;
Marcello Di Fina, Bochum, DE;
Klaus Hofmann, Gevelsberg, DE;
Günter Poetsch, Schwelm, DE;
Walter Krenkel, Renningen, DE;
Ralph Renz, Sindelfingen, DE;
Walter Wirtz, Gevelsberg, DE;
Marcello Di Fina, Bochum, DE;
Klaus Hofmann, Gevelsberg, DE;
Günter Poetsch, Schwelm, DE;
Walter Krenkel, Renningen, DE;
Ralph Renz, Sindelfingen, DE;
Krupp Bilstein GmbH, Ennepetal, DE;
Abstract
A piston-rod assembly with a piston rod having at least one attachment at one end. The piston rod is fabricated of fiber reinforced composite. The piston rod has a body of fiber-reinforced ceramic with a basic matrix of carbon fibers or ceramic fibers or both wherein at least silicon carbide is embedded and with an open porosity, at least at the surface layer, of no more than 3% of the volume of that layer admitting lubricants into the pores. The at least one attachment (or) includes at least one component of a non-ceramic material that fits into and/or interlocks with the piston rod.