Drill bit having the ability to drill vertically and laterally

Boring or penetrating the earth – Bit or bit element – With bit guide or bore wall compacting device

Reexamination Certificate

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Details

C175S061000, C175S415000

Reexamination Certificate

active

07849940

ABSTRACT:
A drill bit having a plurality of cutters on its lower surface, each of which can having a plurality of PDC cutter elements disposed thereon. The cutting surface on each of the cutters is mounted in in an orientation that allows drilling of oversize boreholes which enables the drill bit to be turned more easily to facilitate the boreholes being drilled on a smaller radius. The placement of the cutters on each of the blades enables the drill bit to drill both vertically and laterally.

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patent: 5740873 (1998-04-01), Tibbitts
patent: 6123160 (2000-09-01), Tibbitts
patent: 6206117 (2001-03-01), Tibbitts et al.
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patent: 6427792 (2002-08-01), Roberts et al.
patent: 6474425 (2002-11-01), Truax et al.
patent: 6484825 (2002-11-01), Watson et al.
patent: 6659207 (2003-12-01), Hoffmaster et al.
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patent: 7457734 (2008-11-01), Johnson et al.
patent: 2002/0020565 (2002-02-01), Hart et al.
patent: 2005/0273302 (2005-12-01), Huang et al.
patent: 2006/0037785 (2006-02-01), Watson et al.
patent: 2007/0205023 (2007-09-01), Hoffmaster et al.
patent: 2007/0272446 (2007-11-01), Mensa-Wilmot
patent: 2008/0142271 (2008-06-01), Brackin et al.
patent: WO 99/13194 (1999-03-01), None
patent: WO 00/43628 (2000-07-01), None

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