Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element
Reexamination Certificate
2006-02-28
2006-02-28
Neuder, William (Department: 3672)
Boring or penetrating the earth
Bit or bit element
Rolling cutter bit or rolling cutter bit element
C175S374000
Reexamination Certificate
active
07004267
ABSTRACT:
A drill bit for use in earth-boring operations includes a threaded upper section removably connectable to a power source, and a shank section connected thereto and having a centrally disposed longitudinal axis. The shank section further has a lower portion extending substantially vertically and parallel to the axis and a plurality of notches spaced along a perimeter thereof. The present invention further includes a plurality of carbide buttons affixed to the plurality of notches respectively for cooperating with a plurality of cones during operating conditions to thereby prevent the plurality of cones from dislodging from the lower section and for assisting an operator to bore a substantially uniform hole in a predetermined direction and about the longitudinal axis.
REFERENCES:
patent: 2740612 (1956-04-01), Phipps
patent: 3788407 (1974-01-01), Lorenz et al.
patent: 4013325 (1977-03-01), Rear
patent: 4304311 (1981-12-01), Shinn
patent: 4545441 (1985-10-01), Williamson
patent: 4560013 (1985-12-01), Beimgraben
patent: 4682663 (1987-07-01), Daly et al.
patent: 5667027 (1997-09-01), Poffenroth
patent: 5697461 (1997-12-01), Newton et al.
patent: 6173797 (2001-01-01), Dykstra et al.
patent: 6234261 (2001-05-01), Evans et al.
patent: 2003/0192721 (2003-10-01), Singh et al.
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