Boring or penetrating the earth – With above-ground means to feed tool
Patent
1990-02-26
1990-12-25
Kisliuk, Bruce M.
Boring or penetrating the earth
With above-ground means to feed tool
175170, 175203, 173 22, 173170, 280 4724, E21B 700, E21B 1908
Patent
active
049795783
ABSTRACT:
Apparatus for digging post holes with motorized power. The earth drill comprises a rigid lever pivotally mounted on an axle supported by a pair of wheels. Motorized digging means are pivotally connected to one end of the lever. The other end of the lever is adapted for exertion of upward and downward forces thereupon. The distance from the point of support of the lever by the axle to the first end of the lever defines a first lever arm. The distance from the point of support to the other end of the lever defines a second lever arm.
REFERENCES:
patent: 2499458 (1950-03-01), Campbell
patent: 2505331 (1950-04-01), Lambly et al.
patent: 2604304 (1952-07-01), Wilson
patent: 2815049 (1957-12-01), Herscovitch
patent: 2856156 (1958-10-01), Young
patent: 3913762 (1975-10-01), Alexander
patent: 3976147 (1976-08-01), Cunningham
patent: 4271919 (1981-06-01), Vaughan
patent: 4750711 (1988-06-01), Landry
"Flyer" Published by Little Beaver, Inc., Entitled Tonque-Free One Man Earth Drilling.
"Flyer" Published by Ground Hog Inc., Entitled Earth Drill D-5.
"Flyer" Published by Ground Hog Inc., Entitled One Man Earth Drill.
Kisliuk Bruce M.
Roberts, Jr. Reginald F.
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