Pipe connection and process to make same

Details Pipe connection and process to make same Pipe connection and process to make same

1974-10-21

1976-04-27

Callaghan, Thomas F.

Pipe joints or couplings

End to side or plate

Penetrating

29446, 174DIG8, 264249, 264DIG66, 285222, 285381, 285423, 285DIG10, F16L 4100, F16L 4700

Patent

active

039530590

ABSTRACT:
A connection of a first pipe to the wall of a second pipe or container is disclosed. A hole is formed through the wall of a second pipe or container which is of a diameter smaller than the outer diameter of the first pipe. At least the connection end of the first pipe consists essentially of a polymer of ethylene or a copolymer of ethylene and a small quantity of mono-1-olefins having from 2 to 8 carbon atoms. The polymer preferably has a weight average molecular weight of above 200,000. The connection portion of the first pipe is cold-swaged and inserted into the hole. Due to the mechanical memory of the cold-swaged end of the first pipe, it recovers towards its original shape to form a firm connection between the first pipe and the second pipe or container wall. A sealant can be applied between the first and the second pipe. The connection end of the first pipe is preferably flared outwardly to add strength and to further prevent pulling out of the first pipe from the hole in the second pipe or container wall.

REFERENCES:
patent: 2053413 (1936-09-01), Armacost
patent: 2209403 (1940-07-01), Kittner et al.
patent: 2678224 (1954-05-01), Kooistra
patent: 2994933 (1961-08-01), Wolfe
patent: 3022482 (1962-02-01), Waterfield et al.
patent: 3349792 (1967-10-01), Larkin
patent: 3518359 (1970-06-01), Trimble et al.
patent: 3730565 (1973-05-01), Steudler
patent: 3751075 (1973-08-01), Rosenberg

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