Rotary drill guard assembly and method
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United States of America Patent
Stats
-
Dec 26, 1989
Grant Date -
N/A
app pub date -
Jun 10, 1988
filing date -
Jun 10, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A guard assembly for encasing drive rods during below ground horizontal drilling is illustrated as including a tube positionable by an adjustable tube guide, which remains stationary during drilling, an expandable tube having a smaller diameter for telescoping into the larger tube, means attaching the smaller tube to the rotary drill power source for substantial encasement of the drive rod during drilling.
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