Boring or penetrating the earth – Tool actuation by reaction of rotating eccentric mass
Patent
1981-05-11
1983-09-13
Pate, III, William F.
Boring or penetrating the earth
Tool actuation by reaction of rotating eccentric mass
175394, E21B 724
Patent
active
044036655
ABSTRACT:
An eccentric mass rotor is employed to drive a column which may comprise a casing, piling, drill stem or the like into the earth. The rotation axis of this rotor is oriented such that when it is rotatably driven, a rotating force vector component is generated which lies in a plane substantially normal to the longitudinal axis of the bore hole. The rotating force vector causes a portion of the column formed by the drill stem, casing, piling or the like to precess or roll around the wall of the bore hole in a cycloidal manner in forceful engagement with the bore hole wall. Sloping ridges or spiral flanges are formed on a portion of the outer surface of the column, such that the rotary torque generated therein causes forceful engagement of these ridges or spiral flanges with the bore hole wall to thereby effect a screw action which operates to more effectively drive the column down into the earth or with reversal of the direction of torque to pull the column out of the earth.
REFERENCES:
patent: 3096833 (1963-07-01), Bodine
patent: 3499293 (1970-03-01), Kane
patent: 3865501 (1975-02-01), Kniep
patent: 4073353 (1978-02-01), Bodine
Pate III William F.
Sokolski Edward A.
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