Boring or penetrating the earth – Processes
Patent
1986-11-24
1988-06-21
Leppink, James A.
Boring or penetrating the earth
Processes
175 24, 175 51, 175203, 111 2, E21B 702, E21B 1044, A01C 504
Patent
active
047519711
ABSTRACT:
A mobile automatic augering device, capable of augering a hole, entrapping a volume of earth removed from the hole to create a work space above the hole, and then backfilling the hole with the removed earth is disclosed. The present invention is characterized by an augering canister which contains a reversably rotatable auger within it. In operation, the canister is lowered to the earth. An auger is then rotated and lowered through an open, lower end into the earth. Once the auger has been lowered to a predetermined depth, the rotation is stopped, and the auger is raised back up into the canister, thereby entrapping the augered earth in the canister. The canister is raised a predetermined distance so that a work space, between the bottom of the canister and the surface of the earth is formed. After a set time period, the auger is rotated within its canister in an opposite direction, thereby dumping the entrapped earth into the hole to backfill the hole.
REFERENCES:
patent: 3406765 (1968-10-01), Alexander
patent: 3593809 (1971-07-01), Derry
patent: 3752242 (1973-08-01), Gremillion
patent: 3756330 (1973-09-01), Russell, Jr.
patent: 3813171 (1974-05-01), Teach et al.
patent: 4482960 (1985-11-01), Pryor
patent: 4575522 (1986-03-01), Reiger et al.
Leppink James A.
Melius Terry Lee
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