Pipe joints or couplings – With casing – lining or protector
Patent
1995-07-17
1999-02-09
Arola, Dave W.
Pipe joints or couplings
With casing, lining or protector
285 47, 285 55, 285138, 285297, 285351, 285354, 285355, 285379, 285906, 285911, 285915, 138149, F16L 1112
Patent
active
058684379
ABSTRACT:
A pipeline is made by joining a number of pipe sections, each of which includes an inner pipe structure and an outer pipe structure. The outer pipe structure, which may be zinc plated or encased in an protective elastomeric material, includes mating couplings at each end to fasten similar sections together end to end. The inner pipe structure includes a hole extending throughout the pipeline and means for sealing around the hole at each joint. The inner pipe structure is resiliently mounted within the outer pipe structure. The outer pipe structure of each pipe section extends in both directions past the ends of the inner pipe structure.
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Arola Dave W.
Barron Harry W.
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