Patent ID: 7121595
Filing Date: 2006-10-17
Classification: F16L

Abstract:
1. A device for leaktight coupling of a tube to a tubular nose, the tube being provided with an outwardly-directed bead at a distance from its end, the tubular nose presenting an outside thread and including an inlet bore for defining a housing for an annular gasket, the device comprising: a nut having the tube passing therethrough, the nut presenting an end inside thread to co-operate with the thread of the tubular nose and including a chamber behind the thread, the chamber being terminated going away therefrom by a drive wall; an axial drive collar suitable for being removably placed between one flank of the bead on the tube and the drive wall of the nut; and an annular insert for retaining the gasket, wherein the insert is mounted slidably while being held captive axially in the bore of the nose that receives it and wherein the collar extends axially towards the end of the tube beyond the bead in the above-mentioned chamber of the nut, firstly to co-operate with the insert which is slidable in its housing and is in the form of a pusher for compressing the gasket between the bore and the tube, and secondly to form a sleeve for supporting the tube between the tubular nose and the nut, wherein the drive collar comprises two identical half-collars, each possessing complementary end means cooperating separably to reconstitute the collar.