Pipes and tubular conduits – Repairing
Patent
1975-10-14
1976-09-07
Gilliam, Paul R.
Pipes and tubular conduits
Repairing
1510406A, 138 89, 220316, F16L 104, B63B 3504
Patent
active
039786781
ABSTRACT:
Method and apparatus for plugging a dry section of a pipeline in response to an influx of water into another section thereof while the pipeline is being laid on a sea bottom comprising; a carriage disposed in the pipeline and including a partition having forward and rearward sides with the forward side being exposed to water which may enter the other pipeline section; means for effecting a seal between the internal wall of the pipeline and the carriage; means for disengageably engaging the internal wall of the pipeline to lock the carriage against movement relative thereto, and means responsive to an influx of water into the other pipeline section on the forward side of the partition to procure actuation of the seal means and the engaging means independently of the partition to sealably lock the carriage in the pipeline with consequent plugging of the first mentioned pipeline section.
REFERENCES:
patent: 3751932 (1973-08-01), Matthews, Jr.
patent: 3788084 (1974-01-01), Matthews, Jr.
patent: 3842612 (1974-10-01), Arnold
Chin Arthur H. T.
Duncan Anthony B.
Gilliam Paul R.
Grosz Alex
HydroTech International, Inc.
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