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

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.
Inventors:
 [1];  [1]
  1. (Idaho Falls, ID)
Issue Date:
OSTI Identifier:
871288
Assignee:
United States of America as represented by United States (Washington, DC) INEEL
Patent Number(s):
US 5701963
Contract Number:
AC07-76ID01570
Research Org:
EG & G IDAHO INC
Country of Publication:
United States
Language:
English
Subject:
continuous; injection; inert; gas; drill; drilling; potentially; hazardous; conventional; features; frame; gear; motor; box; drive; hollow; rotating; shaft; projects; auger; connected; provided; multiplicity; holes; supplied; directed; flows; bottom; hollow shaft; gas flows; gas flow; inert gas; rotating shaft; potentially hazardous; gear motor; /175/