Skewed inserts for an earth boring cutter

Details Skewed inserts for an earth boring cutter Skewed inserts for an earth boring cutter

1978-08-02

1979-07-17

Leppink, James A.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175410, 175 53, E21B 908

Patent

active

041612256

ABSTRACT:
An insert cutter for earth boring includes a plurality of skewed inserts for contacting the earth formations being bored. At least one annular row of tungsten carbide inserts are positioned in the cutter body. Each insert has an elongated body and a formation contacting head. The elongated body is mounted in a socket in the cutter body and the formation contacting head projects from the cutter body. The inserts are installed on the cutter body such that the inserts axes are angularly offset between one-half to thirty degrees from the rotational axis of the cutter.

REFERENCES:
patent: 1224287 (1917-05-01), Double
patent: 1691623 (1928-11-01), Black
patent: 3250337 (1966-05-01), Demo
patent: 3593812 (1971-07-01), Peterson

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