Patent ID: 6062611
Filing Date: 2000-05-16
Classification: F16L

Abstract:
A locked joint between a socket of a first pipe, and a smooth end of a second pipe inserted in the socket with the interposition of an annular sealing gasket, the joint comprising:a raised bead integral with the smooth end;a split metal retaining ring arranged around the smooth end just behind said raised bead and installed by contraction and crossing of ends thereof in order to penetrate into the socket, then expansion in order to allow said raised bead to pass, and relaxation in order to clamp the smooth end; anda rear support surface for the retaining ring integral with the socket,wherein the retaining ring comprises, on the circumference of at least one face, a plurality of indentations configured to allow the contraction, crossing, and expansion of the retaining ring necessary to assemble the joint, wherein at least one indentation is cut in an axial end face of the retaining ring, extending into a radially-exterior surface of the ring and a radially-interior surface of the ring, which grips the smooth end.