US Patent 7237808 Tube and pipe fittings

Connector that includes a first element having a threaded portion and a rounded end, a second element having an end structured to slidably contact the rounded second end of the first element, and a third element having a conical bore. The second element extends through the conical bore for movement within the conical bore, and a threaded end structured and arranged to mate with the threaded portion of the first element. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.