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. 07, 1992
Filed:
Feb. 20, 1991
Applicant:
Inventors:
Horst F Struckmeyer, Leverkusen, DE;
Hartmut Treiber, Langenfeld, DE;
Siegfried Pietsch, Leverkusen, DE;
Wilhelm Liethen, Leverkusen, DE;
Assignee:
Goetze AG, Burscheid, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16F / ;
U.S. Cl.
CPC ...
18832217 ; 2771 / ; 9216 / ; 92168 ;
Abstract
A lip seal ring for circumferentially contacting and sealing a shaft movable relative to the lip seal ring includes an elastomer ring having a sealing lip and an adhering face and a stiffening ring made of a deformation-resistant material. The stiffening ring is bonded to the elastomer ring at the adhering face. The stiffening ring is made of a phenolic resin, a polyamide resin or a polyimide resin. The elastomer ring is made of an oil-resistant elastomer based on a nitrile-butadiene rubber or a derivative thereof, and polyethylene or polypropylene.