Excavating – Beneath a body of water
Reexamination Certificate
2005-04-05
2005-04-05
Will, Thomas B. (Department: 3611)
Excavating
Beneath a body of water
C037S323000, C037S335000
Reexamination Certificate
active
06874261
ABSTRACT:
A method of forming a trench in the bed of a body of water, the bed having an initial undisturbed upper surface, comprises suspending a pressure line from a vessel floating on the body of water, the pressure line terminating downwardly in a downwardly directed nozzle. The nozzle is positioned a small distance above the bed, and water is pumped under pressure on board the vessel and is discharged via the pressure line and nozzle downwardly against the bed surface with the water pumped at an overpressure between 0.01 bar and 20 bar and at a flow rate of 0.25 to 20.0 cm per second. The distance of the nozzle above the surface of the bed is not more than ten times the diameter of the water jet defined by the nozzle, preferably about six times the diameter of that water jet.
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Schuit Adrianus Jacobus Petrus Marinus
Smit Paul
Beach Thomas A.
Van Oord N.V.
Will Thomas B.
Young & Thompson
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