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US 2003/0116358 A1Published application
Drill bit stabilizer device
OwnerCody H. Rogersinventor
Life of this patent
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Abstract
A stabilizing sleeve device for an impact drill bit used in underground drilling operations. The cylindrical tubular device has arcuate keys on a bottom edge for interlocking with keyways in the shoulder of a hammer drill bit and a locking key groove in its top edge.
Claims3
A drill bit stabilizer device system comprising:
- a cylindrical metal tube having a top edge and a bottom edge;
- said top edge having a locking key groove in an inner surface;
- said bottom edge having a plurality of substantially equidistantly spaced arcuate keys in an inner surface;
- and
- a shoulder of an underground hammer drill bit head having a plurality of substantially equidistantly spaced arcuate keyways for interfitting the keys in the cylindrical metal tube, for stabilizing a hammer drill bit during a downhole drilling process.
2 more elements
Dependencies are inferred from the claim text.