Coring bit with uncoupled sleeve
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United States of America Patent
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-
Oct 7, 2008
Grant Date -
Jul 22, 2004
app pub date -
Jan 22, 2003
filing date -
Jan 22, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A coring bit, including an outer hollow coring shaft, and a rotationally uncoupled internal sleeve disposed inside the outer hollow coring shaft. The rotationally uncoupled internal sleeve may be a non-rotating internal sleeve. The rotationally uncoupled internal sleeve may be a free-floating internal sleeve.
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