Diamond-coated button insert for drilling

Details Diamond-coated button insert for drilling Diamond-coated button insert for drilling

1997-08-18

1999-09-14

Neuder, William

Boring or penetrating the earth

Bit or bit element

Impact or percussion type

175434, E21B 1046

Patent

active

059507454

ABSTRACT:
A button insert for a percussive drill bit comprises a carbide base and a diamond layer bonded thereto. The diamond layer forms a dome-shaped cutting surface which is of symmetrical configuration about a center axis of the insert. A crest portion of the cutting surface has a larger radius of curvature than a peripheral portion thereof. The cutting surface can be formed by numerous radii, or can be of constantly varying radius (i.e., elliptical).

REFERENCES:
patent: 4724913 (1988-02-01), Morris
patent: 5332051 (1994-07-01), Knowlton
patent: 5740874 (1998-04-01), Matthias
patent: 5743346 (1998-04-01), Flood et al.

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