Elements faced with superhard material

Details Elements faced with superhard material Elements faced with superhard material

1994-11-09

1997-01-07

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

761084, 175434, 407118, 407119, E21B 1046

Patent

active

055907288

ABSTRACT:
A preform element, such as a cutting element for a 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 extend in directions outwardly away from an inner area of the facing table towards the peripheral surface thereof.

REFERENCES:
patent: 2371489 (1945-03-01), Williams, Jr.
patent: 4109737 (1978-08-01), Bovenkerk
patent: 4629373 (1986-12-01), Hall
patent: 4861350 (1989-08-01), Phaal et al.
patent: 5316095 (1994-05-01), Tibbitts
patent: 5335738 (1994-08-01), Waldenstrom et al.
patent: 5351772 (1994-10-01), Smith

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