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:
Sep. 18, 1979
Filed:
Feb. 21, 1978
Applicant:
Inventor:
Jacques Bertin, Asnieres, FR;
Assignee:
Paulstra, , FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277152 ;
Abstract
The invention concerns seals particularly for rotating shafts. This seal, with a flexible membrane in the form of a cupola having an aperture for the shaft to pass therethrough, is characterized by the fact that said cupola has a thickness decreasing from its base to the contact ridge with the shaft, the elasticity necessary for maintaining the contact being obtained from the inherent rigidity of the membrane.