US Patent 6874971 Connector for tube and connected tubular structure

A connector for connecting lengths of tubing in an end to end relation, the connector comprises a central body comprising first and second cooperating members operatively associated with a mechanism for moving the cooperating members in a direction transverse to the longitudinal axis of the connector and wedge members, the wedge members surrounding the central body and resting against the central body so that when the cooperating members are caused to move apart, the wedge members are urged outwardly to uniformly engage the interior of a tube to be connected.