Machine for forming trenches for pipelines or the like in the se

Details Machine for forming trenches for pipelines or the like in the se Machine for forming trenches for pipelines or the like in the se

1975-08-20

1977-08-30

Gilliam, Paul R.

E02F 502, F16L 100

Patent

active

040445666

ABSTRACT:
A trenching machine comprising a carriage, a trenching unit, operating machinery and buoyancy tanks; the carriage has wheels and is guided on the pipeline so as to permit swinging of the carriage around the pipeline; the carriage is also driven along the pipeline by engagement of the wheels with the pipeline; the trenching unit is rigidly connected to the major inert masses of the machine including the buoyancy tanks, whereas the carriage is carried by said major masses by vertical, hydraulic cylinders.

REFERENCES:
patent: 3004392 (1961-10-01), Symmank
patent: 3717003 (1973-02-01), Bates et al.
patent: 3732701 (1973-05-01), Lynch
patent: 3877237 (1975-04-01), Norman

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