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:
Dec. 08, 1981
Filed:
May. 21, 1979
Applicant:
Inventor:
Hans Forch, Birkenau, DE;
Assignee:
Firma Carl Freudenberg, Hohnerweg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277153 ; 277166 ;
Abstract
A packing ring comprises a stiffening ring having an angular profile and an angularly profiled sealing element fastened thereon composed of an elastomeric material and having the configuration of a two-armed lever. The sealing element comprises a membrane portion forming one arm, a sealing lip on the other arm and an annular portion fastened by the membrane to the annular portion of the stiffening ring. The radial portion of the stiffening ring and the membrane portion define a cavity therebetween and a fulcrum axis is provided centrally of the two arms to pivot the sealing lip into contact with the surface to be sealed.