E - Fixed Constructions – 02 – D
Patent
E - Fixed Constructions
02
D
61/91
E02D 7/22 (2006.01)
Patent
CA 1184044
SONIC SYSTEM FOR PROPELLING PILINGS, DRILLS AND THE LIKE INTO THE EARTH EMPLOYING SCREW DEVICE ABSTRACT OF THE DISCLOSURE 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 gen- erated which lies in a plane substantially normal to the longitu- dinal 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.
426674
Bodine Albert G.
Hirons & Rogers
LandOfFree
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