Means to secure cutting elements on drag type drill bits

Details Means to secure cutting elements on drag type drill bits Means to secure cutting elements on drag type drill bits

1985-10-24

1987-03-03

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175410, E21B 1046

Patent

active

046468579

ABSTRACT:
A metal matrix (53) of a blade (30) on a drag-type rotary drill bit (10) is formed about a plurality of diamond cutting elements (56) so that the entire surface areas of the cutting faces (62) are exposed and engage the formation to be cut in a drilling operation. The cutting elements (56) are secured by a mechanical interlocking bond or attachment (68, 70) between the cutting elements (56) and matrix (53) without utilizing the cutting faces (62) for securement.

REFERENCES:
patent: 4491188 (1985-01-01), Grappendorf
patent: 4499958 (1985-02-01), Radtke et al.
patent: 4515226 (1985-05-01), Mengel et al.

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