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:
Aug. 28, 1984
Filed:
May. 19, 1982
Jacques Champleboux, Clermont-Ferrand, FR;
Caoutchouc Manufacture et Plastiques, Clermont-Ferrand, FR;
Abstract
A device for temporarily shutting off conduits comprises an elastic or resilient sleeve expansible under powerful internal pressure, and having a rubber wall comprising at least two superimposed plies defining an internal tube and an external sheath, the cords of all the plies being crossed from one ply to another while forming angles smaller than 30.degree. with respect to the generatrices. According to the invention, the pair of outer plies constitutes a resistant carcass of the sleeve while the pair of internal plies form protective plies constituted by adjacent cords having a diameter less than half that of the cords of the outer plies of the carcass and forming with the generatrices angles not greater than the angles of the cords of the carcass plies.