Drill bit having improved cutter configuration

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4913247
SERIAL NO

07204683

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The subject drill bits include a body member with cutter blades having a generally parabolic bottom profile. The cutter blades each include a diamond cutting face which increases in vertical height generally as a function of increased distance from the center line of the bit. The increased height allows the bits to provide a desired total diamond cutting volume at each radius of the bit, while allowing the diamond contact area to remain generally constant as the bit wears.

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Patent Owner(s)

Patent OwnerAddress
EASTMAN CHRISTENSEN COMPANY A CORP OF DE365 BUGATTI STREET SALT LAKE CITY UT 84126

International Classification(s)

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  • 1988 Application Filing Year
  • E21B Class
  • 682 Applications Filed
  • 2 Patents Issued To-Date
  • 0.30 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances19881989199019911992199319940255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Jones, Mark L Midvale, UT 26 940

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Patent Citation Ranking

  • 283 Citation Count
  • E21B Class
  • 0 % this patent is cited more than
  • 35 Age
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