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:
Jun. 28, 2022
Filed:
Apr. 18, 2018
Carl Freudenberg KG, Weinheim, DE;
Friederike Von Fragstein, Heidelberg, DE;
Matthias Adler, Heppenheim, DE;
Stephan Rutz, Weinheim, DE;
Thomas Schnetz, Schwetzingen, DE;
Katharina Hallstein, Fuerth/Kroeckelbach, DE;
Kai Feller, Birkenau, DE;
Boris Traber, Hirschberg, DE;
Erich Prem, Hemsbach, DE;
CARL FREUDENBERG KG, Weinheim, DE;
Abstract
A method includes using a sealing element to dynamically seal a sealing body in the presence of a lubricant. The sealing element has an elastomeric base body and a plasma coating. The coating includes the elements carbon, oxygen, silicon, and hydrogen. The coating has the following properties at least at the surface: the amount ratio C:Si (at %/at %) is >5, the amount ratio O:Si (at %/at %) is >3, and the surface energy is <50 mN/m. In an embodiment, the coating includes the element fluorine.