Boring or penetrating the earth – Bit or bit element – Specific or diverse material
Patent
1993-11-22
1995-09-05
Bagnell, David J.
Boring or penetrating the earth
Bit or bit element
Specific or diverse material
175434, 407119, E21B 1046, B23P 900
Patent
active
054472083
ABSTRACT:
A superhard cutting element having a polished, low friction, substantially planar cutting face with a surface finish roughness of 10 .mu. in. or less and preferably 0.5 .mu. in. or less.
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Lund Jeffrey B.
Smith Redd H.
Bagnell David J.
Baker Hughes Incorporated
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