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. 16, 1987
Filed:
May. 28, 1985
Applicant:
Inventor:
Wilhelm Schmitt, Heppenheim, DE;
Assignee:
Firma Carl Feudenberg, Weinheim, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J / ; B29C / ;
U.S. Cl.
CPC ...
29511 ; 264249 ; 264250 ; 264262 ; 264334 ; 277-1 ; 425D / ;
Abstract
A method of making a shaft seal ring starts with a tube, optionally provided on its outside and/or inside with hydrodynamically-acting return elements, as may be cut from a hollow cylinder. The tube is axially slipped along a form with a continuously increasing diameter until its leading or lower end is shaped into a flange in the radial direction. The flange may be simultaneously joined to a reinforcing ring.