Cutter assemblies for rotary drill bits

Details Cutter assemblies for rotary drill bits Cutter assemblies for rotary drill bits

1986-01-14

1987-11-10

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175410, 76108A, E21B 1046

Patent

active

047051221

ABSTRACT:
A cutter assembly, for a rotary drill bit, comprises a generally cylindrical stud to be received in a socket in the surface of the bit body, the stud being formed, adjacent one end thereof, with a plane surface inclined at an angle of less than 90.degree. to the longitudinal axis of the stud, and a preform cutting element mounted on the inclined surface. The dimensions of the cutting element, and its location on the inclined surface, are such that no part of the cutting element projects beyond the peripheral surface of the stud as viewed axially thereof. The cutting element may be so shaped and located that it initially projects beyond the peripheral surface of the stud, the projecting portions subsequently being removed, for example by grinding.

REFERENCES:
patent: 4323130 (1982-04-01), Dennis
patent: 4325439 (1982-04-01), Vezirian
patent: 4351401 (1982-09-01), Fielder
patent: 4373410 (1983-02-01), Davis
patent: 4382477 (1983-05-01), Barr
patent: 4471845 (1984-09-01), Jurgens
patent: 4478297 (1984-10-01), Radtke
patent: 4478298 (1984-10-01), Hake et al.
patent: 4570725 (1986-02-01), Matthias et al.

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