Cutting blank with diamond strips in grooves

Details Cutting blank with diamond strips in grooves Cutting blank with diamond strips in grooves

1984-10-04

1986-06-03

Leppink, James A.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175410, E21B 1046

Patent

active

045924333

ABSTRACT:
A cutting blank, preferably for use on a drill bit for cutting through earth formations, comprises a substrate formed of a hard material and including a cutting surface. A plurality of shallow grooves are formed in the cutting surface and each groove includes opposing side and base portions. Strips of a diamond substance are disposed in the grooves and are adhered to the side and base portions and include a cutting face exposed adjacent to the cutting surface of the substrate. The strips may be arranged in various patterns and may be in non-intersecting relationship, or intersecting relationship. The grooves may include undercut portions to more positively anchor the strips to the substrate. The cutting blank is preferably bonded to a stud, with the stud being mounted in a rotary drill bit.

REFERENCES:
patent: 2511991 (1948-02-01), Nussbaum
patent: 4128136 (1978-12-01), Generoux
patent: 4156329 (1979-05-01), Daniels et al.
patent: 4255165 (1981-03-01), Dennis et al.

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