Double cone cutting head for a drill bit

Details Double cone cutting head for a drill bit Double cone cutting head for a drill bit

1989-10-05

1990-11-06

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175354, 175374, 175376, E21B 1008, E21B 1046

Patent

active

049678540

ABSTRACT:
The present invention is directed to a cutting head for use in a rotary drill bit in which the cutting head comprises a stem and a base integrally formed with the stem. The base has a first cutting surface defined by a frustrum of a cone or other shape and a second cutting surface defined a cone or other shape, wherein the first and second cutting surfaces are coaxial with the axis of the cutting head. The cutting head is adapted to be attached to a drill bit such that the axis of the cutting head is oriented at an angle with respect to the axis of the drill bit.

REFERENCES:
patent: 1152151 (1915-08-01), Decker
patent: 1195208 (1916-08-01), Griffin
patent: 2227209 (1940-12-01), Zublin
patent: 2336335 (1943-12-01), Zublin
patent: 2463932 (1949-03-01), Zublin
patent: 2528300 (1950-10-01), Degner
patent: 2911196 (1959-11-01), Cameron et al.
patent: 3361481 (1968-01-01), Maddock
patent: 4154312 (1979-05-01), Barnetche

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