Hybrid rock bit

Details Hybrid rock bit Hybrid rock bit

1980-04-28

1982-08-10

Pate, III, William F.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175336, 175374, 175376, E21B 1014

Patent

active

043433715

ABSTRACT:
A hybrid rock bit is disclosed wherein a pair of opposing extended nozzle drag bit legs are positioned adjacent a pair of opposed tungsten carbide roller cones. The extended nozzle face nearest the hole bottom has a multiplicity of diamond inserts mounted therein. The diamond inserts are strategically positioned to remove the ridges between the kerf rows in the hole bottom formed by the inserts in the roller cones.

REFERENCES:
patent: 2557302 (1951-06-01), Maydew
patent: 2873093 (1957-02-01), Hildebrandt et al.
patent: 3066749 (1962-12-01), Hildebrandt
patent: 4006788 (1977-02-01), Garner
patent: 4203496 (1980-05-01), Baker

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