Insert for a drill bit incorporating a PDC layer having extended

Details Insert for a drill bit incorporating a PDC layer having extended Insert for a drill bit incorporating a PDC layer having extended

1995-07-03

1996-10-22

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

175434, 51307, 407118, E21B 1046

Patent

active

055667791

ABSTRACT:
A drag bit is formed of an elongate tooth made of tungsten carbide and having an elongate right cylinder construction. The end face is circular at the end of a conic taper. The tapered surface is truncated with two 180.degree. spaced flat faces at 15.degree. to about 45.degree. with respect to the axis of the body. The end is capped by a PDC layer.

REFERENCES:
patent: 4811801 (1989-03-01), Salesky et al.
patent: 4861350 (1989-08-01), Phaal et al.
patent: 5379854 (1995-01-01), Dennis
patent: 5435403 (1995-07-01), Tibbitts
patent: 5486137 (1996-01-01), Flood et al.

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