Drill bits and the blades therefor

Details Drill bits and the blades therefor Drill bits and the blades therefor

1992-06-30

1994-02-22

Neuder, William P.

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

1754201, 175432, E21B 1046

Patent

active

052879372

ABSTRACT:
A drill bit is provided which has a novel blade having an elongate longitudinal protrusion positioned axially along the centerline of one side of the blade. The body is adapted to retain the blade in a transverse slot on one end of the body. The slot is provided with a centrally located longitudinal recess along one of the sides of the slot which is adapted to receive the longitudinal protrusion of the blade when the blade is positioned in the slot.

REFERENCES:
patent: 3447616 (1969-06-01), Granat
patent: 4189013 (1980-02-01), Adams
patent: 4313506 (1982-02-01), O'Connell
patent: 4334585 (1982-06-01), Upton
patent: 4398611 (1983-11-01), Sarin
patent: 4492278 (1985-01-01), Leighton
patent: 4711312 (1987-12-01), Leibee
patent: 4787464 (1988-11-01), Ojanen
patent: 4817742 (1989-04-01), Whysong
patent: 5137398 (1992-08-01), Omori

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