Cutting member for rotary drill bit

Details Cutting member for rotary drill bit Cutting member for rotary drill bit

1982-03-15

1985-02-12

Leppink, James A.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175410, E21B 1056

Patent

active

044985495

ABSTRACT:
A cutting member for rotary drill bits for deep-well drilling in ground formations consists of a carrier member (1) with a supporting surface (3) and a supporting member (4) of hard metal rigidly connected to this at its back and with a cutting layer (5) of polycrystalline synthetic diamond material. The supporting member (4) together with its cutting layer (5) is cut out of a circular cylindrical shaped body or made as a segment and together with its cutting layer occupies only a portion of the supporting surface (3) of the carrier member (1), the remaining supporting surface being occupied by a supplementary member (6) of hard metal or other high-strength substances. With regard to the cutting performance and effect, the same requirements are met as with a circular diamond cutting plate while at the same time considerable savings are achieved in valuable diamond material.

REFERENCES:
patent: 1538028 (1925-05-01), Davis
patent: 2686663 (1954-08-01), Bruestle
patent: 3143177 (1964-08-01), Galorneau et al.
patent: 4200159 (1980-04-01), Peschel et al.
patent: 4221270 (1980-09-01), Vezirian
patent: 4373410 (1983-02-01), Davis

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