Method of and apparatus for crushing earth under the ground

Details Method of and apparatus for crushing earth under the ground Method of and apparatus for crushing earth under the ground

1985-05-24

1987-08-25

Novosad, Stephen J.

Boring or penetrating the earth

With means movable relative to tool below ground to stop...

Stops flow by movement about fixed pivot

175 67, 175424, 299 17, E21B 718

Patent

active

046886486

ABSTRACT:
Method and apparatus for crushing the earth under the ground by boring a hole; inserting a drill head having radially directed water jet thereon down the hole to the desired stratum; rotatingly moving the drill head upwardly while jetting water radially to form a cylindrical crushed area; lowering the drill head to the original depth; extending a water jet extender arm radially to a projecting position; again rotatingly moving the drill head upwardly while jetting water from the nozzles on the radial outward portions of the extender arm to radially enlarge the cylindrical crushed area, the rotation of the extender arm also stirring the already crushed area; returning the extender arm to an original waiting position; and lifting the drill head out of the hole.

REFERENCES:
patent: 2018285 (1935-10-01), Schweitzer et al.
patent: 4278137 (1981-07-01), Van Eek
patent: 4302052 (1981-11-01), Fischer
patent: 4366988 (1983-01-01), Bodine
patent: 4494616 (1985-01-01), McKee
patent: 4508389 (1985-04-01), Hodges

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