Patent ID: 7093864
Filing Date: 2006-08-22
Classification: F16L

Abstract:
1. A connecting element for welding to a circular ring-shaped end face of a pipe, the connecting element comprising: a base member having a first end for receiving a pipe and a second end opposite first end; the base member composed of a metal selected from the group consisting of steel, brass, titanium, and CuNiFE alloys; the base member having an interior comprising a first axial section extending from the first end inwardly and a second axial section extending from the second end inwardly and having a radius that is smaller than a radius of the first axial section; wherein the interior has an annular friction area having an inner radial end and an outer radial end, wherein the inner radial end is connected to an inner end of the second axial section, wherein the annular friction area is configured to be welded by friction welding to an end face of a pipe; wherein the annular friction area does not project axially past the first end; the base member having a first outer side adjoining the first end and forming a contact surface for securing a union nut; the base member having a second outer side adjoining the second end and forming a conical sealing surface; wherein the interior has an annular circumferentially extending receptacle for receiving a bead resulting on an outer side of the pipe when friction welding the connecting element to the pipe, wherein the receptacle is positioned radially outwardly of the annular friction area and is connected to the outer radial end of the annular friction area and passes into the second axial section; wherein the receptacle has a bottom that is positioned in an axial direction of the base member farther away from the first end than the annular friction area.