Method of joining pipes

Details Method of joining pipes Method of joining pipes

1987-12-31

1989-11-14

Arola, Dave W.

Pipe joints or couplings

Deformed

Both members

285424, 29517, 29521, F16L 1314

Patent

active

048802603

ABSTRACT:
A method of joining a pair of pipes is disclosed. The method includes forming one of the pipes with an enlarged diameter near one end thereof. A radially-outwardly flared section widens from the enlarged diameter toward the end of the pipe. An elastic gasket and a C-shaped rigid ring are placed in the flared section. A second pipe is then inserted inside the enlarged section of the first pipe. The outer pipe is then inwardly deformed by the action of a pressure member, such as the die, applied to the exterior of the outer pipe in the region of the pipe overlap. The free end of the outer pipe deforms plastically inwardly toward the inserted pipe thereby compressing the gasket into sealing engagement between the two pipes and compressing the C-shaped ring. As the C-shaped ring is compressed, the outer pipe is deformed into the inserted pipe so that the ring is engaged by the inner wall of the outer pipe and is wedged into the outer wall of the inserted pipe.

REFERENCES:
patent: 3632141 (1972-01-01), Larsson
patent: 3827727 (1974-08-01), Moebius
patent: 3915480 (1975-10-01), Kish et al.
patent: 4018462 (1977-04-01), Saka
patent: 4541655 (1985-09-01), Hunter

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