Cutting element for drill bits
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United States of America Patent
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-
Jan 10, 1995
Grant Date -
N/A
app pub date -
Aug 17, 1993
filing date -
Aug 17, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A cutting element which has a metal carbide stud having a plurality of ridges formed in a reduced or full diameter hemispherical outer end portion of said metal carbide stud. The ridges extend outwardly beyond the outer end portion of the metal carbide stud. A layer of polycrystalline material, resistant to corrosive and abrasive materials, is disposed over the ridges and the outer end portion of the metal carbide stud to form a hemispherical cap.
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