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. 15, 1982
Filed:
Nov. 20, 1980
Applicant:
Inventors:
Helmut Holzer, Weinheim, DE;
Ernst M von Arndt, Weinheim, DE;
Assignee:
Firma Carl Freudenberg, Weinheim an der Bergstrasse, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ; F16J / ;
U.S. Cl.
CPC ...
277151 ; 277152 ; 2772 / ; 277215 ; 277-1 ;
Abstract
A shaft seal for preventing leakage from a gap between a bore hole in a machine housing and a rotating shaft is disclosed. The seal consists of a contact pressure ring of elastic material and a multi-slitted, thin sleeve of polytetrafluoroethylene which is permanently joined to the inner wall of the ring.