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. 09, 2002
Filed:
Dec. 12, 1997
Applicant:
Inventor:
Norbert Feistel, Winterthur, CH;
Assignee:
Maschinenfabrik Sulzer-Burckhardt AG, Basel, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J 9/12 ;
U.S. Cl.
CPC ...
F16J 9/12 ;
Abstract
A sealing ring, in particular for a piston rod with a circular cross-section, which has a height in the axial direction as well as a surface oriented towards a sliding surface, with the surface being executed to extend cylindrically over a part of the height in order to form a sealing surface and being executed to become wider along a further part. The sealing ring has a high sealing action in the axial direction so that a majority of the gas flows out between the piston rod and the sealing surface so that a gas storage arises.