Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1990-07-03
1991-04-30
Corbin, David H.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
405168, 405173, F16L 114, B63B 3503
Patent
active
050113330
ABSTRACT:
Vessel carried apparatus for laying a continuous metal pipe on the bottom of a body of water comprising a pipe overbending structure mounted on the end of a vessel and having a 90 degree arcuate peripheral configuration in a vertical plane extending from the water to a position overlying the vessel. Pipe engagable rollers are disposed along the arcuate periphery of the overbending structure, and an arcuate track parallel to the arcuate periphery is formed on the overbending structure. A stinger frame carries two longitudinally spaced pipe bending roller means respectively engaging the top and bottom surfaces of a continuous linear pipe formed on the vessel. The first such roller means bends the pipe to conform to a selected extent of the pipe engagable rollers, while the second roller means reversely bends the pipe to a linear configuration. The forward end of the stinger frame is horizontally pivoted to a carriage which is lockable in any selected position along the arcuate track. The rear portions of the stinger may be supported by a gantry mounted cable. The position of the stinger frame along the arcuate track determines the entry angle of the pipe into the water.
REFERENCES:
patent: 3641778 (1972-02-01), Gibson
patent: 3685306 (1972-08-01), Mott
patent: 3822559 (1974-07-01), Matthews et al.
patent: 4243345 (1981-01-01), Cha et al.
patent: 4340322 (1982-07-01), Springett et al.
patent: 4410297 (1983-10-01), Lynch
patent: 4820082 (1989-04-01), Recalde
Corbin David H.
Intec Engineering, Inc.
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