Pipe joints or couplings – Deformed – Both members
Patent
1978-10-16
1981-05-26
Callaghan, Thomas F.
Pipe joints or couplings
Deformed
Both members
29523, 2853825, 285DIG18, F16L 1314
Patent
active
042694388
ABSTRACT:
A joint is provided between one tube and another tube without the necessity of a heavy thick-walled metal coupling. The joint includes first and an optional second enlarged portions on a first tube with the second enlarged portion near an end of the second tube. A first shoulder is provided between the first enlarged portion and the main body of the first tube. A second annular shoulder is provided at the junction between the first and second enlarged portions. The end of the second tube slips into the first enlarged portion of the second tube and the second tube is then axially compressed so as to form an annular bead which acts against and is contained by the second enlarged portion of the first tube. This axial compression provides both a mechanical interconnection so that the tubes will not axially separate despite fluid pressure or mechanical force, and also provides a fluid tight seal at the annular bead and the second shoulder or second enlarged portion.
REFERENCES:
patent: 868524 (1907-10-01), Bayer
patent: 2006139 (1935-06-01), Arthur
patent: 2434080 (1948-01-01), Rosa
patent: 2463883 (1949-03-01), Kinsey
patent: 2543087 (1951-02-01), Woodling
patent: 2545930 (1951-03-01), Richardson
patent: 3514134 (1970-05-01), Shurtleff et al.
patent: 3817562 (1974-06-01), Cook et al.
patent: 3940168 (1976-02-01), Balon
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