Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1978-03-02
1980-01-15
Stein, Mervin
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
405171, F16L 104
Patent
active
041836979
ABSTRACT:
For laying a pipeline on the bed of the sea, a plurality of pipeline sections are successively towed by a tug exerting a traction effort at a point spaced to the rear of the front end of a pipeline section being towed, while another tug exerts a holding effort at a point spaced in front of the rear end, the front and rear ends being maintained near to the surface by a system of floats and trail-ropes and the intermediate portion of the pipeline section being ballasted so as to be supported on the sea bed, whereafter the front end of the pipeline section is welded to the rear end of a preceding section, and so on.
REFERENCES:
patent: 3568456 (1971-03-01), Van Loenen
patent: 4051687 (1977-10-01), Ells
Brown Laurence R.
Compagnie Generale pour les Developpements Operationnels des Ric
Grosz Alexander
Stein Mervin
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