Patent ID: 8070190
Filing Date: 2011-12-06
Classification: F16L

Abstract:
1. Security splicing system of aligned pipes against expansion and/or contraction thereof, comprising two identical fastening elements ( 2 ) and ( 2 a ) disposable on an outer face of ends of the two pipes ( 1 ) and ( 1 a ), wherein both fastening elements ( 2 ) and ( 2 a ) are joined together; and a watertight coupling flange ( 3 ) disposable water-tightly on connecting zones ( 4 ) and ( 4 a ) opposite one another without a connection with the fastening elements ( 2 ) and ( 2 a ), wherein the two fastening elements ( 2 ) and ( 2 a ) are separated from one another at a fixed distance greater than a length of the watertight coupling flange ( 3 ) but less than a distance that would allow an axial displacement of said watertight coupling flange ( 3 ) to expose the connecting zones ( 4 ) and ( 4 a ), thus allowing the displacement of the watertight coupling flange ( 3 ) on the connecting zones ( 4 ) and ( 4 a ) during contractions and expansions of the two pipes ( 1 ) and ( 1 a ) but without loss of watertightness during the expansion and/or contraction of said pipes ( 1 ) and ( 1 a ), wherein each of the two fastening elements ( 2 ) and ( 2 a ) is formed by an exterior clamp ( 5 ) joined by pressure screws ( 6 ) attached to one or more corresponding closures ( 7 ), said exterior clamp ( 5 ) having exterior hollow cylinders ( 8 ) located longitudinally parallel to each other and to a common axis of the pipes ( 1 ) and ( 1 a ), inside of which are disposed coupling rods ( 9 ) that join both fastening elements ( 2 ) and ( 2 a ) at a pre-established distance without separating or being displaced, wherein said cylinders ( 8 ) have an identical shape, quantity, and position and are located in a same angular branching in both fastening elements ( 2 ) and ( 2 a ), wherein under the exterior clamp ( 5 ) of each fastening element ( 2 ) and ( 2 a ) of the double flange, a fastening profile ( 11 ) remains completely coiled around an exterior surface of the pipes ( 1 ) and ( 1 a ) along with its exterior clamp ( 5 ), wherein the fastening profile consists of a rectangular metal sheet provided with a series of truncated cone-shaped projections formed by a simultaneously punching and drawing action and disposed on a contact face of the pipes ( 1 ) and ( 1 a ) in such a way that they are drivable into its surface when the exterior clamp ( 5 ) is tightened to achieve a sufficient immobile fastening, and both edges of the fastening profile being folded at a right angle ( 13 ) so as to center the fastening profile on the inner periphery of the clamp ( 5 ).