Boring or penetrating the earth – Bit or bit element – Magnetized or with magnet
Patent
1989-05-03
1990-03-27
Novosad, Stephen J.
Boring or penetrating the earth
Bit or bit element
Magnetized or with magnet
51309, 76108A, 175410, 408145, E21B 1046, E21B 1056
Patent
active
049112546
ABSTRACT:
A polycrystalline diamond cutting element is shown which includes a mounting body having a leading face and a trailing face and a thin layer of super hard material carried on the leading face of the mounting body which defines a cutting face. The cutting face has a circular outer periphery which is interrupted to form a recess in the cutting face which continues through the mounting body. The recess mates in complementary fashion with the outer periphery of a second cutting element when the cutting elements are arranged side-by-side with the cutting faces thereof in a common plane.
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DeBeers Catalog-Standard PCD Product Range.
Stratapax Publication-Drill Blanks.
Gunter Jr. Charles D.
Hughes Tool Company
Novosad Stephen J.
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