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Continuous injection of an inert gas through a drill rig for drilling into potentially hazardous areas

United States Patent

5,701,963
December 30, 1997
View the Complete Patent at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
A drill rig for drilling in potentially hazardous areas includes a drill having conventional features such as a frame, a gear motor, gear box, and a drive. A hollow rotating shaft projects through the drive and frame. An auger, connected to the shaft is provided with a multiplicity of holes. An inert gas is supplied to the hollow shaft and directed from the rotating shaft to the holes in the auger. The inert gas flows down the hollow shaft, and then down the hollow auger and out through the holes in the bottom of the auger into the potentially hazardous area.
McCormick; Steve H. (Idaho Falls, ID), Pigott; William R. (Idaho Falls, ID)
The United States of America as represented by the United States (Washington, DC)
08/ 594,967
January 31, 1996
CONTRACTUAL ORIGIN OF THE INVENTION The U.S. Government has rights in this invention pursuant to Contract No. DE-AC07-76ID01570 between the Department of Energy and EG&G Idaho, Inc.