Tubular assembly including insulated conduits and couplers for t

Details Tubular assembly including insulated conduits and couplers for t Tubular assembly including insulated conduits and couplers for t

1982-05-07

1985-05-21

Callaghan, Thomas F.

Pipe joints or couplings

With casing, lining or protector

Insulated

138149, 285 53, F16L 5914

Patent

active

045181756

ABSTRACT:
A tubular pipe assembly for hot or cold fluid transfer which assembly includes a plurality of insulated conduit sections joined together, end to end, with male and female couplings. Each conduit section has concentric inner and outer pipes with insulation disposed between the pipes. The outer pipes have threaded ends. A means at both ends of each conduit section seals the cavity between the inner and outer pipes and supports the pipes relative to each other. A male coupling has a first end threaded on the outer pipe of a first conduit section and has a second end which is threaded. A female coupling has a first and a second threaded end. The first threaded end of the female coupling is threaded on the outer pipe of a second conduit section. The second threaded end of the female coupling is threaded on the second end of the male coupling and thusly joins the first and second insulated conduits together. The male and female couplings have walls, intermediate their threaded ends, which are relatively thicker than the walls at the threaded ends thereof.

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patent: 4396211 (1983-08-01), McStravick et al.
patent: 4415184 (1983-11-01), Stephenson et al.

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