Boring or penetrating the earth – Bit or bit element – Specific or diverse material
Reexamination Certificate
2005-10-11
2009-10-20
Gay, Jennifer H (Department: 3676)
Boring or penetrating the earth
Bit or bit element
Specific or diverse material
C175S342000
Reexamination Certificate
active
07604073
ABSTRACT:
A rotary drill bit for drilling a subterranean formation may comprise a bit body, a cutting element coupled to the bit body, and a torque-generating assembly configured to apply torque, either continuously or periodically, to the cutting element. The torque-generating assembly may be powered by the rotary motion of the rotary drill bit or may be hydraulically or electrically powered. The cutting element may comprise a substrate, a table of superabrasive material disposed on an end of the substrate, and at least one impelling feature formed along the exterior surface of the substrate. In addition, a method of rotating a cutting element coupled to a drill bit for drilling a subterranean formation may comprise providing a cutting element comprising a table bonded to a substrate, coupling the substrate of the cutting element to a drill bit body, and applying torque to the substrate of the cutting element.
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Cooley Craig H.
Sexton Timothy N.
Gay Jennifer H
Holland & Hart LLP
Stephenson Daniel P
US Synthetic Corporation
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