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In a joint between two tubes having a corrugated outer wall and a smooth or corrugated inner wall the tubes are cut to form each an open annular space between said walls at the end. A sealing ring is received by the spaces, and the tubes are pressed against the sealing ring by means of a lock ring t

In a joint between two tubes having a corrugated outer wall and a smooth or corrugated inner wall the tubes are cut to form each an open annular space between said walls at the end. A sealing ring is received by the spaces, and the tubes are pressed against the sealing ring by means of a lock ring tightened about the tube ends.

대표청구항 ▼

A combination tube joint consisting essentially of a joint including two aligned adjacent extruded nometallic tubes each having a corrugated outer wall and a reversibly corrugated inner wall, said corrugations extending along the entire length of said tubes, the roots of the corrugations of the inne

A combination tube joint consisting essentially of a joint including two aligned adjacent extruded nometallic tubes each having a corrugated outer wall and a reversibly corrugated inner wall, said corrugations extending along the entire length of said tubes, the roots of the corrugations of the inner wall and the outer wall being joined, an annular space formed by the inner and outer walls of each tube at the end of said tube and opening in a plane passing transversely through the crest of the outer wall, an annular intermediary sealing ring disposed within said space in each tube and extending between the aligned adjacent ends of the tubes, and a lock ring applied around the tube ends and engaging the corrugated outer wall of each tube to press by cam action the tube ends against the intermediary sealing ring from opposite sides of said sealing ring when tightened about the tube ends.