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. 18, 2010
Filed:
Jul. 01, 2004
Udo Gruber, Neusäss, DE;
Sebastian Grasser, Friedberg, DE;
Eugen Pfitzmaier, Thierhaupten, DE;
Reiner Bode, Aindling, DE;
Gernot Hochegger, Vienna, AT;
Udo Gruber, Neusäss, DE;
Sebastian Grasser, Friedberg, DE;
Eugen Pfitzmaier, Thierhaupten, DE;
Reiner Bode, Aindling, DE;
Gernot Hochegger, Vienna, AT;
SGL Carbon SE, Wiesbaden, DE;
Abstract
A process for producing a friction material based on a sheet-like carbon fiber woven fabric for wet-friction elements, such as clutch linings or synchronizing ring linings. The woven fabric of carbon fibers is impregnated with a binder, in particular with a resin, to form a binder-impregnated fiber material. The prepreg is cured for a curing period under a curing temperature which is elevated with respect to the ambient temperature and is pressed mechanically on its surfaces with a pressing mold before the start and/or at least during part of the curing period.