Portable drilling apparatus

Details Portable drilling apparatus Portable drilling apparatus

1982-04-26

1984-10-16

Yost, Frank T.

Tool driving or impacting

With work engaging means supporting drive

Relatively adjustable work engaging elements

173160, E21B 712

Patent

active

044769407

ABSTRACT:
A lightweight portable drilling apparatus capable of being assembled and disassembled for lifting and moving by helicopter. The apparatus includes a center vertically-oriented drilling tower equipped with a rotary drilling assembly, and having a base supported by a plurality of adjustable leveling legs. Also included is a first module pivotally coupled to one side of the tower base and supported by a flexible tether attached to the module and the drilling tower near the top thereof, and a second module pivotally coupled to the other side of the base of the tower and supported by a flexible tether also attached to the drilling tower near the top thereof and to the second module. Each module includes either a power source, such as a diesel engine, or auxiliary power equipment for supplying power to operate the drilling assembly.

REFERENCES:
patent: 3047080 (1962-07-01), Gunther, Jr.
patent: 3506075 (1970-04-01), Attebo
patent: 3533478 (1970-10-01), Tissier
patent: 3809344 (1974-05-01), Kolderup et al.
patent: 3977479 (1976-08-01), Sainsbury
patent: 4192393 (1980-03-01), Womack et al.
patent: 4296821 (1981-10-01), Larson

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