Elements faced with superhard material

Details Elements faced with superhard material Elements faced with superhard material

1996-04-18

1998-08-04

Neuder, William P.

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

E21B 1046

Patent

active

057880018

ABSTRACT:
A preform element, such as a cutting element for a rotary drag-type drill bit, includes a facing table of superhard material having a front face, a peripheral surface, and a rear surface bonded to a substrate which is less hard than the superhard material. The rear surface of the facing table is integrally formed with a plurality of ribs which project into the substrate, and at least major portions of the ribs extend across the rear surface of the facing table in directions which are generally radial with respect to at least one point which is adjacent or outside the peripheral surface of the facing table.

REFERENCES:
patent: 4784023 (1988-11-01), Dennis
patent: 5120327 (1992-06-01), Dennis
patent: 5486137 (1996-01-01), Flood et al.
patent: 5590728 (1997-01-01), Matthias et al.
patent: 5617928 (1997-04-01), Matthias et al.
patent: 5622233 (1997-04-01), Griffin

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