Bifurcated drill bit construction
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United States of America Patent
Stats
-
Oct 10, 1995
Grant Date -
N/A
app pub date -
Feb 16, 1994
filing date -
Feb 16, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An improved bifurcated drill bit is set forth. It has a shank for connection with a chuck, a cylindrical head having an outer face, and duplicate cutter faces. Each cutter is formed of PDC inserts which are cylindrical (or segments thereof). The PDC inserts are formed from a circular disk or ring which has an alignment hole in the center. When mounted, the insert presents a PDC face which bears against the drill hole. The drill hole is formed by cutting action of the inserts. Impact and shock loading occurs at the PDC surface.
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