Patent ID: 6604761
Filing Date: 2003-08-12
Classification: F16L

Abstract:
A device for coupling two pipes made of composite material based on a reinforced thermoplastic, the device comprising:a first end-piece fastenable to an end of a first pipe; a second end-piece fastenable to an end of a second pipe, each of said first and second end-pieces having a screw thread over at least part of its external surface; a sleeve having at least one internal screw thread which is matable with the external screw thread of at least one of said end-pieces, so that said at least one of said end-pieces can be threaded into said sleeve; and a sealing element fittable in said sleeve and abutting the end of said at least one of said end-pieces when the at least one of said end-pieces is threaded into said sleeve, wherein the first and second pipes are each made from a thermoplastic matrix, a layer of reinforced material coating the matrix, and a thermoplastic jacket covering the coating layer, wherein at least internal surfaces of the end-pieces are made of a same thermoplastic as that of the jacket of the pipes, and wherein the end-pieces are respectively heat welded around ends of the first and second pipes.