Self-penetrating drilling method and thrust-generating tool for implementing same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 13, 2006
Grant Date -
Jul 31, 2003
app pub date -
Feb 12, 2001
filing date -
Mar 1, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention concerns a self-penetrating drilling method and a thrust-generating tool: the tool comprises N blades. Each blade comprised K drill cutters. The shapes, positions and orientations of said drill cutters are determined in the following manner: the k.sup.th drill cutter of the last blade drills, at the (q-1).sup.th of the tool rotational cycle, a cut in the rock downstream of the one produced by the (k+1).sup.th drill cutter of the first blade at the q.sup.th rotational cycle of the tool; the k.sup.th drill cutter of the nth blade drills, at the q.sup.th rotational cycle of the tool, a cut in the rock downstream of the one produced by the k.sup.th drill cutter of the (n+1).sup.th blade at the q.sup.th rotational cycle of the tool; the normal to the leading edge of the drill cutter has a component along the axis of rotation oriented towards upstream.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully