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:
Nov. 08, 2005
Filed:
Apr. 06, 2004
Wolfgang Notter, Essen, DE;
Alois Baumann, Rain, DE;
Oswin Öttinger, Meitingen, DE;
Heiko Leinfelder, Nördlingen, DE;
Martin Reinthaler, Neusäss, DE;
Silvia Mechen, Meitingen, DE;
Jürgen Bacher, Wertingen, DE;
Wolfgang Notter, Essen, DE;
Alois Baumann, Rain, DE;
Oswin Öttinger, Meitingen, DE;
Heiko Leinfelder, Nördlingen, DE;
Martin Reinthaler, Neusäss, DE;
Silvia Mechen, Meitingen, DE;
Jürgen Bacher, Wertingen, DE;
SGL Carbon AG, Wiesbaden, DE;
Abstract
A flat gasket for flange connections has a leakage rate below the limit value of 1*10kPa*1/(s*m). The gasket assembly has a thick, areal, pressure-resistant core formed from at least one layer of graphite foil with a base weight of at most 1500 g/m, or a multilayer sandwich of such graphite foils and metal interlayers. The core is embedded between two metal foils, and the surfaces that are remote from the core are covered by covering layers of graphite foil with a base weight of at most 350 g/m. A ratio of the base weight of the graphite foil of the covering layers to the base weight of the graphite foil of the core lies between 1:3 and 1:7.