Pipes and tubular conduits – Combined – With end structure
Patent
1989-08-14
1992-05-05
Simone, Timothy F.
Pipes and tubular conduits
Combined
With end structure
138177, 138178, 138DIG11, F16L 900
Patent
active
051098881
ABSTRACT:
This invention provides a high pressure metallic pipe having at least one end thereof provided with a connecting head suitable for connection to a counter seat part and a method for shaping the connecting head. The high pressure metallic pipe according to this invention features a metallic ring embedded in a cavity formed therein at the time of buckling so that no cavity erosion due to the high pressure fluid flowing through the pipe takes place. Further, according to the method of this invention, one end of the thick metallic pipe, having a comparatively small outer diameter, is expanded by buckling, a metallic ring is inserted into the extended pipe end and the pipe end is pressed by a punch to form a connecting head with the metallic ring embedded therein.
REFERENCES:
patent: 4080782 (1978-03-01), Colecchio
patent: 4134430 (1979-01-01), Mukasa et al.
patent: 4193333 (1980-03-01), Hallock
patent: 4266577 (1981-05-01), Usui
patent: 4642870 (1987-02-01), Schulz
patent: 4722619 (1988-02-01), Reiser et al.
patent: 4784311 (1988-11-01), Sugao
patent: 4864711 (1989-09-01), Yokota
Brinson Patrick F.
Casella Anthony J.
Hespos Gerald E.
Simone Timothy F.
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