Insert attack angle for roller cone rock bits

Details Insert attack angle for roller cone rock bits Insert attack angle for roller cone rock bits

1990-04-12

1991-07-02

Neuder, William P.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175341, 175353, 175410, E21B 1016

Patent

active

050279130

ABSTRACT:
The inserts for a roller cone of a multiple cone rock bit are positioned or angled in the cone to attack an earthen formation such that the inserts are subjected to more compressive forces and the formation is subjected to more shear forces as the roller cutters roll over the bottom of the formation.

REFERENCES:
patent: 2038386 (1936-04-01), Scott et al.
patent: 3385385 (1968-05-01), Kucera et al.
patent: 3743038 (1973-07-01), Bennett
patent: 3763942 (1973-10-01), Levitt
patent: 4108260 (1978-08-01), Bozarth
patent: 4187922 (1980-02-01), Phelps
patent: 4415208 (1983-11-01), Goyarts
patent: 4641718 (1987-02-01), Bengtsson
patent: 4751972 (1988-06-01), Jones et al.

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