Patent ID: 6773038
Filing Date: 2004-08-10
Classification: F16L

Abstract:
A fluid-tight connecting assembly between a metal tube and a flexible tube for a hydraulic installation, the assembly comprising a connector having a first portion connected to said metal tube and a second portion over which said flexible tube is fitted, said connector comprising a main annular projection provided on said first portion and a plurality of auxiliary annular projections disposed on said second portion and adapted to co-operate with said flexible tube, said assembly further comprising a bell-type clamping element having an annular stop portion abutting with a conical flank of said main projection and a tubular portion surrounding said flexible tube and compressingly clamped thereon so as to lock said flexible tube fluid-tightly on said second portion of said connector; andwherein said tubular portion is deformed so as to form a plurality of grooves each of which is disposed between a pair of said auxiliary annular projections of said connector, said connector and said clamping element forming between them a space adjacent said annular stop portion and bounded axially by said annular stay portion and by a first one of said grooves, said space having a smaller volume than the portion of flexible tube accommodated in it before the deformation of said clamping element so as to extrude an inner annular end portion of the flexible tube into the space located between said conical flank of said main projection and an inner rim of said annular stop portion of said clamping element, said inner annular end portion thereby being compressed between said conical flank and said inner rim.