Invention Grant
- Patent Title: Steel tooth cutter element with expanded crest
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Application No.: US09858138Application Date: 2001-05-15
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Publication No.: US06367568B1Publication Date: 2002-04-09
- Inventor: Stephen C. Steinke , Gary R. Portwood , Gary E. Garcia , David P. Moran , Quan V. Nguyen
- Applicant: Stephen C. Steinke , Gary R. Portwood , Gary E. Garcia , David P. Moran , Quan V. Nguyen
- Main IPC: E21B1008
- IPC: E21B1008

Abstract:
A cutter element for a drill bit. The cutter element has a base portion and an extending portion and the extending portion has either a zero draft or a negative draft with respect to the base portion. The non-positive draft allows more of the borehole bottom to be scraped using fewer cutter elements. The cutter elements having non-positive draft can be either tungsten carbide inserts or steel teeth.
Public/Granted literature
- US20010027881A1 Steel tooth cutter element with expanded crest Public/Granted day:2001-10-11
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