Pipe joints or couplings – With casing – lining or protector – Lined
Patent
1988-04-25
1989-09-12
Callaghan, Thomas F.
Pipe joints or couplings
With casing, lining or protector
Lined
285 93, 285371, 285404, 285423, F16L 912, F16L 2102
Patent
active
048653560
ABSTRACT:
The improved tubular joint of the present invention includes the tubular members each having a thickened portion near their adjoining ends which thickened portions have substantially the same stiffness as the thinner portions of the tubular members, an inner band positioned within the thickened ends of the tubular members and an outer band positioned around the thickened ends of the tubular members, said inner band having a plurality of capture plates with each having a threaded openings facing outwardly and registering with the openings of the bolt sleeves which extending through the outer band and the end of each of the tubular members, bolt shafts extending through said bolt sleeves in threaded engagement with said threaded openings in the capture plate and sealed within said bolt sleeves, locking nuts on the outer ends of said bolt shafts, means for sealing between the exterior of the inner band and the interior of each of the tubular members, means for testing the effectiveness of the seal between the inner band and the tubular members, and means for sealing between the ends of the tubular members. In one form of the invention, the ends of the tubular members are beveled and wedges are positioned therebetween and actuated by threads on a bolt shaft to provide sealing and in another form of the invention the ends are square and an "L" shaped seal is provided between the ends of the tubular members and around the interior of one of the tubular members.
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patent: 4634314 (1987-01-01), Pierce
patent: 4810010 (1989-03-01), Jones
Fisher Edmund A.
Moore Norman B.
Parris Joe P.
Callaghan Thomas F.
Cameron Iron Works USA Inc.
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