Boring or penetrating the earth – Bit or bit element – Specific or diverse material
Patent
1997-08-06
2000-11-21
Neuder, William
Boring or penetrating the earth
Bit or bit element
Specific or diverse material
761082, 175432, F21B 1046
Patent
active
061489379
ABSTRACT:
A supporting substrate for supporting a diamond layer on a cutting element is disclosed which has an irregular surface defining the interface between the substrate and the diamond layer. The irregularities in the surface may have varying amplitudes, varying frequencies, or both and can vary according to defined mathematical expressions. The irregularities may assume recognizable geometric forms, such as spiral, circle or wave configurations, or may be arranged in an irregular manner. The surface is constructed with or without a plane of symmetry and may have different average amplitudes and/or frequencies in different areas.
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Keith Carl W.
Mensa-Wilmot Graham
Neuder William
Smith International Inc.
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