Boring or penetrating the earth – Processes – Boring with specific fluid
Patent
1993-05-21
1994-11-08
Novosad, Stephen J.
Boring or penetrating the earth
Processes
Boring with specific fluid
175215, 175320, 175424, E21B 718, E21B 720, E21B 1062, E21B 1700
Patent
active
053618556
ABSTRACT:
A soft excavator (10, 90, 110, 130) is disclosed which utilizes a jet of high velocity fluid flow such as air or water flow, preferably supersonic, through a nozzle (48, 92, 112) to excavate a material, such as the ground. A second passage for air flow is provided which is directed by an evacuator skirt (52, 102) in a direction along the excavator generally opposite the direction of discharge of the high velocity excavating flow to entrain the material excavated for disposal.
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Deken Arthur D.
Franklin James E.
Schuermann Kenneth W.
Novosad Stephen J.
The Charles Machines Works, Inc.
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