Cutter assemblies for rotary drill bits
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United States of America Patent
Stats
-
Nov 10, 1987
Grant Date -
N/A
app pub date -
Jan 14, 1986
filing date -
Jan 15, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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