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. 24, 1991
Filed:
Jan. 17, 1990
Applicant:
Inventors:
Rene Merel, Colombes, US;
Michel Galard, Tacoignieres, FR;
Assignee:
EG & G, Maurepas, FR;
Primary Examiner:
Int. Cl.
CPC ...
F16J / ; F16J / ;
U.S. Cl.
CPC ...
277182 ; 2513353 ; 277189 ; 2772 / ; 403 50 ; 464174 ; 464175 ;
Abstract
To set up sealing between two parts, having the possibility of relative rotation to a limited extent around a determined axis, a concertina element is used. This concertina element has two rigid, end tubular sections, fixedly joined in an impervious way with respective zones of each of said parts and an intermediate tubular part between said end tubular sections, and is capable of changing shape under torsion around said axis, to an extent that is at least equal to said extent. Thus, all risks of leakage between the two parts are removed.