BELL AND SPIGOT PIPE COUPLING WITH LOCK RING

摘要

A pipe joint which includes a bell and spigot and a split locking ring positioned within the joint between the outer face of the spigot and the inner face of the bell. The locking ring is expanded within the bell so that the spigot may be inserted into the locking ring and the bell and the locking ring is then contracted to provide a key which bears against an inwardly projecting nose on the bell and an annular rib on the spigot, thereby resisting axial thrust forces tending to separate the bell and spigot.