Weld joint

Details Weld joint Weld joint

1986-08-22

1988-03-01

Callaghan, Thomas F.

Pipe joints or couplings

With assembly means or feature

Molded joint facilitator

285286, F16L 1302

Patent

active

047281260

ABSTRACT:
The present invention relates to a weld joint for metal pipes. The object is to provide a weld joint which is easy to make and which has a clean surface inside the pipe. The ends of the pipes to be jointed are flared and a cylindrical metal sealing ring under axial compression is arranged between the inner conical flared surfaces of the flared pipe ends. The edges of the ring are elastically bent inward by the inner conical surfaces of the pipe ends. The sealing ring is preferredly provided with a circumferential flange projecting out between the pipe ends for facilitating correct position of the sealing ring.

REFERENCES:
patent: 1920449 (1933-08-01), Unke
patent: 1980561 (1934-11-01), Wagner
patent: 1981850 (1934-11-01), Fisher
patent: 1987341 (1935-01-01), Kachel
patent: 2125324 (1938-08-01), Williams et al.
patent: 2232593 (1941-02-01), Diescher
patent: 2261566 (1941-11-01), Russell et al.
patent: 2382098 (1945-08-01), Robie
patent: 2646995 (1953-07-01), Thompson
patent: 2681028 (1954-06-01), Phillips
patent: 2764426 (1956-09-01), Von Ahrens
patent: 3381980 (1968-05-01), Smith
patent: 3712649 (1973-01-01), Martin
patent: 4593938 (1986-06-01), Denise et al.

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