Pipe joints

Claim 1

A connection for pipes, pipe section and the like, made preferably by centrifugal casting methods, wherein said pipe comprises a first narrow end of an adjoining identical pipe and a second socket end adapted to receive a narrow end, wherein said narrow end has external supporting elements circumferentially arranged on the exterior surface thereof and said socket end has at least one internally protruding projection circumferentially arranged on the interior surface thereof arcuately adjacent said supporting elements, the relative diameters of said supporting elements and said projection being such that said projection can concentrically receive said supporting elements and further including at least two segmented locking members adapted to rest against both said supporting elements and said projection to thereby lock adjoining pipes to one another, and at least one segment-shaped recess formed within said socket which has a circumferential length only slightly greater than the length of each of said locking members for receiving said locking members, said recess being off-set circumferentially relative to said supporting elements and projection so that said locking members may, after insertion through said recess into a position between said projection and said supporting elements, be rotated in opposite circumferential directions to rest against said supporting elements and said projection to thereby lock the pipes, said socket end also including an annular depression on the interior surface thereof axially removed from said projection for receiving a sealing ring of elastomeric material which sealingly engages the circumference of said narrow end whereby the joint between adjacent pipe sections is sealed and wherein said sealing ring is axially spaced from said supporting elements and said locking members.