Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1978-04-17
1981-03-24
Corbin, David H.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
29421E, 285382, F16L 104
Patent
active
042577195
ABSTRACT:
A method of recovering an underwater pipe comprises inserting a recovery line attachment into the pipe, explosively deforming the pipe so that it is mechanically secured to the attachment, and bringing the pipe to the surface by means of a lifting line secured to the attachment. The attachment may include a body insertable into the end of the pipe and a portion having a generally conical surface so that it forms a water tight seal with the pipe when the pipe is explosively deformed into engagement with it.
REFERENCES:
patent: 2367206 (1945-01-01), Davis
patent: 3572768 (1971-03-01), James
patent: 3751932 (1973-08-01), Matthews
patent: 3842612 (1974-10-01), Arnold
patent: 3876233 (1975-04-01), Schmedding et al.
patent: 3978892 (1976-09-01), Scodino
Hunt Kevin W.
Taylor Peter J.
Corbin David H.
Vickers Limited
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