Apparatus for excavating a trench underneath a pipeline installe

Details Apparatus for excavating a trench underneath a pipeline installe Apparatus for excavating a trench underneath a pipeline installe

1979-07-24

1981-11-24

Crowder, Clifford D.

Excavating

Peat excavators

37 94, 405163, E02F 388, E02F 508

Patent

active

043016065

ABSTRACT:
An apparatus for excavating a trench underneath a pipeline installed at the sea bottom, which apparatus is provided with rotating excavators, means for guiding the excavator relative to the pipeline, as well as means for advancing the excavator along the pipeline, whereby the excavators comprise at least two bucket wheels, 15, 16, 15', 16', disposed side-by-side on either side of the pipeline 9 parallel to the direction of advancement P, the main planes of said buckets enclosing an acute angle with each other and intersecting each other underneath the pipeline 9, which bucket wheels are disposed in said main planes, and being adjustable in height.

REFERENCES:
patent: 3722224 (1973-03-01), Roy
patent: 3877238 (1975-04-01), Chang et al.
patent: 4037422 (1977-07-01), DeBoer
patent: 4044566 (1977-08-01), Biberg
patent: 4117689 (1978-10-01), Martin
patent: 4149326 (1979-04-01), Rosa et al.

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