Cable or pipe retrieval and burial apparatus and methods

Details Cable or pipe retrieval and burial apparatus and methods Cable or pipe retrieval and burial apparatus and methods

2006-09-05

2006-09-05

Lagman, Frederick L. (Department: 3673)

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

Submerging, raising, or manipulating line of pipe or cable...

C405S158000, C405S164000, C405S173000

Reexamination Certificate

active

07101116

ABSTRACT:
An apparatus for retrieving a cable or pipe buried under water in bed material comprises a shank (2) having a first surface and a fluke member (5) having a second surface. When the apparatus is towed in a towing direction, the fluke member (5) and shank (2) become buried in the bed material to a predetermined depth suitable for retrieving the cable or pipe. The first and second surfaces are arranged such that under normal working conditions the interaction between the material and at least the first and second surfaces generate opposing forces in these surfaces causing the apparatus to be maintained at substantially the predetermined depth. The apparatus may also be adapted for burial of a cable or pipe by ploughing a furrow in the bed material into which the cable or pipe is supplied using guiding means.

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