PCD Percussion Drill Bit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
N/A
app pub date -
Aug 28, 2009
filing date -
Jan 22, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An insert for a percussion drill bit for drilling a hole in rock comprises a cylindrical portion and domed cutting surface. The domed cutting surface that comprises polycrystalline diamond has a tip radius that is between 0.3 and 0.4 times that of the diameter of the cylindrical portion. The diameter of the cylindrical portion is preferably greater than the gauge diameter of hole multiplied by 0.2.
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