Joint for connecting pipes

摘要

A joint for connecting pipes embodying a first sleeve surrounding and bonded to the end of a first pipe and a bell surrounding and bonded to the end of a second pipe. The bell has an enlarged diameter bore terminating in an annular shoulder at its inner end with the bore being of a size to receive the first sleeve with the inner end of the first sleeve being movable to a position adjacent the shoulder. A second sleeve surrounds the first pipe adjacent the first sleeve within the bell and is adapted for rotative and axial movement relative to the first pipe. Cams within the bell cooperate with cams on the second sleeve to effect axial movement of the second sleeve in response to rotative movement of the second sleeve. Sealing means between the shoulder and the inner end of the first sleeve effects a seal therebetween upon axial movement of the first sleeve to a position with its inner end adjacent the shoulder.