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:
Jul. 10, 2007
Filed:
Nov. 12, 2003
Peter Dröscher, Geretsried, DE;
Klaus Lang, Beuerberg, DE;
Günther Lederer, Geretsried, DE;
Josef Nosowicz, Geretsried, DE;
Andreas Schrüfer, Wolfratshausen, DE;
Georg Steigenberger, Münsing, DE;
Peter Waidner, Peissenberg, DE;
Peter Dröscher, Geretsried, DE;
Klaus Lang, Beuerberg, DE;
Günther Lederer, Geretsried, DE;
Josef Nosowicz, Geretsried, DE;
Andreas Schrüfer, Wolfratshausen, DE;
Georg Steigenberger, Münsing, DE;
Peter Waidner, Peissenberg, DE;
Burgmann Industries GmbH & Co. KG, Wolfratshausen, DE;
Abstract
A secondary sealing element comprises a base body () made of a synthetic material and comprising a base portion () and a seal portion () which each comprise coaxially aligned, axially adjacent through bores () for the passage of a component, and an annular disc element () accommodated in the base portion and comprising a through bore () coaxially aligned with the through bores in the base and seal portions and being made of a material which differs from that of the base body. In the unloaded state, the through bore () of the annular disc element () has a radial dimension d which is greater than that Dof the through bore () in the seal portion () and smaller than that Din the base portion () of the base body (). The annular disc element consists of a carbon material. An important field of application for the secondary sealing element is that of mechanical face seals for sealing relatively moveable components.