Submarine pipe trenching apparatus

Details Submarine pipe trenching apparatus Submarine pipe trenching apparatus

1977-05-09

1978-10-03

Shapiro, Jacob

Hydraulic and earth engineering

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

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

37 63, 37 81, 239596, E02F 508

Patent

active

041176898

ABSTRACT:
Submarine pipe trenching apparatus for digging a trench below submarine pipelines, wherein jet supports having nozzles for digging into the ground are supported for oscillatory movement on a frame, and wherein a crawler assembly is mounted on the pipe for moving the jets supports along and below the pipe when the liquid is propelled through the nozzles for digging out the soil below the pipe. The nozzles may include orifice plate means defining their outlets and inclined so that liquid emanating therefrom strikes the earth formation at a small acute angle.

REFERENCES:
patent: 1276245 (1918-08-01), Millard et al.
patent: 3576111 (1971-04-01), Henry, Jr.
patent: 3625437 (1971-12-01), Garrigou
patent: 3638439 (1972-02-01), Niederer
patent: 3841558 (1974-10-01), Fowler et al.

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