Multi-purpose earth drill

Details Multi-purpose earth drill Multi-purpose earth drill

1990-05-31

1992-02-25

Phan, Hien H.

Tool driving or impacting

With vehicle support for drive

Vehicle motor mechanically coupled to drive tool

173 28, 173140, 175162, 175203, E21B 302

Patent

active

050904868

ABSTRACT:
The multipurpose earth drill is tractor mountable with hydraulic operators to allow using the weight of the tractor for downward pressure on an extensible shaft earth drill which may be an auger or rack bit, the drill being rotated using an extensible shaft from the power take-off of the tractor and moved upward and downward with a pair of hydraulic operators that allow minimizing the overall height of the unit. The auger and auger drive gears are completely enclosed for personnel safety.

REFERENCES:
patent: 2239024 (1941-04-01), Vance
patent: 2639892 (1953-05-01), Jones
patent: 2662736 (1953-12-01), Abrams
patent: 2774568 (1956-12-01), Jones
patent: 2894723 (1959-07-01), Gustafson
patent: 2939682 (1960-06-01), Kromberg
patent: 3700045 (1972-10-01), Coontz
patent: 3756330 (1973-09-01), Russell, Jr.
patent: 4336840 (1982-06-01), Bailey

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