Convex shaped diamond cutting elements

Details Convex shaped diamond cutting elements Convex shaped diamond cutting elements

1988-07-19

1989-08-22

Massie, IV, Jerome W.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175410, E21B 1046

Patent

active

048587079

ABSTRACT:
A diamond insert for a rotary drag bit consists of an insert stud body that forms a first base end and a second cutter end. The cutter end of the insert is formed in a convex or spherical shape of polycrystalline diamond material. The convex layer of diamond is oriented relative to an axis of the stud body with a negative rake angle from 0.degree. to about 45.degree. inclusive.

REFERENCES:
patent: 4109737 (1978-08-01), Bovenkerk
patent: 4244432 (1981-01-01), Rowley et al.
patent: 4350215 (1982-09-01), Radtke
patent: 4529048 (1985-07-01), Hall
patent: 4570726 (1986-02-01), Hall
patent: 4593777 (1986-06-01), Barr
patent: 4604106 (1986-08-01), Hall et al.
Megadiamond Industries Brochure, Oct. 1981.

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