Drilling mast with movable and fixed unscrewing vice
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United States of America Patent
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Oct 4, 2005
Grant Date -
Mar 25, 2004
app pub date -
Dec 5, 2001
filing date -
Dec 5, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention is a new drill for making micropiles, equipped with a mast on which the head-carrying trolley slides and having at the bottom of the mast two pairs of vices, a lower fixed vice and a upper unscrewing vice. Besides being able to rotate around the drilling axis, the unscrewing vice is able to move along said mast with respect to the lower fixed vice. The advantages are considerable, since it is no longer necessary to dismantle the rod and the covering during the extraction stages.
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Family
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Cited Art Landscape
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