Elements faced with super hard material

Details Elements faced with super hard material Elements faced with super hard material

1995-06-20

1997-02-25

Neuder, William P.

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

E21B 1046

Patent

active

056051999

ABSTRACT:
A preform element includes a facing table of super hard material having a from face, an outer peripheral surface, and a rear surface bonded to a substrate which is less hard than the super hard material. The facing table comprising a peripheral region surrounding an inner region, the peripheral region having an inner surface which is inclined at an angle of greater than 90.degree. to the rear surface of the facing table so as to face in a direction having a component rearwardly away from the facing table as well as inwardly towards said inner region. The inner region of the facing table may be formed with projections extending into the substrate.

REFERENCES:
patent: 5120327 (1992-06-01), Dennis
patent: 5469927 (1995-11-01), Griffin
patent: 5486137 (1996-01-01), Flood et al.

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