Rock cutting tool

Details Rock cutting tool Rock cutting tool

1988-12-16

1990-03-13

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175360, 175361, 175353, E21B 1010, E21B 1016

Patent

active

049076647

ABSTRACT:
A drilling member for use in a drilling system, such as for drilling a large diameter subterranean hole or for removing rock at the earth's surface, in which the system employs a cutting head rotated about an axis and mounted for movement into a rock face, the cutting head having a plurality of drilling members, each of which has a truncated conical external surface rotated about the conical axis thereof, and a plurality of spaced-apart rows of indentors secured to the drilling member conical surface, the indentors being adapted to penetrate into the rock face a distance P, and wherein the indentors are spaced a distance not greater than 7 P apart.

REFERENCES:
patent: 3186500 (1965-06-01), Boice
patent: 3250337 (1966-05-01), Demo
patent: 4167980 (1979-09-01), Saxman
patent: 4202419 (1980-05-01), Youngblood
patent: 4343372 (1982-08-01), Kinzer
patent: 4711143 (1987-12-01), Loukanis et al.

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