Rock bit with wear resistant inserts

Details Rock bit with wear resistant inserts Rock bit with wear resistant inserts

1977-06-13

1979-04-10

Purser, Ernest R.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175374, 175410, 76108R, E21B 936

Patent

active

041483685

ABSTRACT:
A tungsten carbide insert for mounting in a rolling cone cutter comprises a base for mounting in the rolling cone cutter, an end converging to the work surface, and a diamond insert embedded in a portion of the work surface to improve the wear resistance of the insert. Preferably the diamond insert is embedded in the portion of the work surface extending farthest from the rolling cone cutter in which the tungsten carbide insert is mounted. Diamond inserts are provided in carbide inserts on the gage row of a cutter. Diamond inserts can also be used in tungsten carbide inserts on the heel row of a rolling cone cutter for maintaining gage of a hole being bored.

REFERENCES:
patent: 1506119 (1924-08-01), Hansen
patent: 1939991 (1933-12-01), Krusell
patent: 2121202 (1938-06-01), Killgore
patent: 2182562 (1939-12-01), Koebel
patent: 3153458 (1964-10-01), Short
patent: 3174564 (1965-03-01), Morlan
patent: 3605923 (1971-09-01), Feenstra
patent: 3727705 (1973-04-01), Newman
patent: 3938599 (1976-02-01), Horn
patent: 4006788 (1977-02-01), Garner
patent: 4081203 (1978-03-01), Fuller

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