Leak-free and vibration resistant pipe-flange coupling

Details Leak-free and vibration resistant pipe-flange coupling Leak-free and vibration resistant pipe-flange coupling

1986-06-11

1987-05-26

Arola, Dave W.

Pipe joints or couplings

Deformed

Outwardly expanded

285405, 285422, F16L 1314

Patent

active

046679898

ABSTRACT:
The pipe (2) is inserted in the flange hole (1) and the pipe-flange seal is assured by an elastomeric ring (7), compressed inside a circular groove (4), made along the internal surface of the flange hole and by heading and expansion of the pipe inside the said hole. The internal surface of the hole may have another two circular grooves, positioned up-stream and down-stream of the first groove (4): one (3) being closed and the other (5) open on one face (6) of the flange. During heading the pipe (2) expands into the groove (3) and folds along the edge of the open groove (5).

REFERENCES:
patent: 332035 (1885-12-01), Bagaley
patent: 786551 (1905-04-01), Doolittle
patent: 4330144 (1982-05-01), Ridenour

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