Patent ID: 6053538
Filing Date: 2000-04-25
Classification: F16L

Abstract:
Ball-and-socket joint for waterproof assembly of two pipe elements (2, 4), of the type where the male end (1) of a first pipe element (2) has a spherical saddle (5) designed to be inserted and pivot in a specially designed housing of spherical profile (11) which is part of the socket (3) of axis Y--Y of a second pipe element (4), with interposition of a waterproofing ring gasket (16) made of elastomer that is housed in a ring groove (15) set in the internal surface of the socket (3), wherein the waterproofing gasket (16) housing groove (15) is located and designed in such a manner with a volume sufficient so that it constitutes an expansion chamber for the elastomer of the gasket (16) during and after the insertion of the spherical saddle (5) in the socket (3) and insures, in locked position, the contact of the gasket (16) on the exterior surface of the saddle (5) located beyond the maximum diameter of said saddle (5) measured in the direction perpendicular to the axis Y--Y of the socket (3), the waterproofing gasket (16) being therefore submitted to a residual radial pressure that guarantees the waterproofness of the assembly and simultaneously prohibits the dislocation of the pipe elements (2, 4).