Bifurcated drill bit construction

Details Bifurcated drill bit construction Bifurcated drill bit construction

1994-02-16

1995-10-10

Schoeppel, Roger J.

Boring or penetrating the earth

Bit or bit element

Impact or percussion type

299100, 175431, E21B 1036

Patent

active

054563291

ABSTRACT:
An improved bifurcated drill bit is set forth. It has a shank for connection with a chuck, a cylindrical head having an outer face, and duplicate cutter faces. Each cutter is formed of PDC inserts which are cylindrical (or segments thereof). The PDC inserts are formed from a circular disk or ring which has an alignment hole in the center. When mounted, the insert presents a PDC face which bears against the drill hole. The drill hole is formed by cutting action of the inserts. Impact and shock loading occurs at the PDC surface.

REFERENCES:
patent: 4593777 (1986-06-01), Barr
patent: 4830123 (1989-05-01), Daly et al.
patent: 5172778 (1982-12-01), Tibbitts et al.
patent: 5180022 (1993-01-01), Brady
patent: 5303787 (1994-04-01), Brady
patent: 5373908 (1994-12-01), Pastusek
patent: 5377773 (1995-01-01), Tibbitts

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