Coupling for pipes, comprises split ring inserted on both sides of rib in truncated chamber, which is elastically deformed to grip tube of larger diameter

摘要

The connection device includes a truncated chamber (5) which has a longitudinal rib (7). A split ring (11) with internal threads, is located on either side of the rib. The ring inner diameter is smaller than the tube (20) which is inserted in ring and supported by the ring in elastically deformed state. The ring has sharp ridges in the internal periphery which are inserted on the tube. An Independent claim is also included for subterranean pipes.