DRILL BIT CUTTER Russian patent published in 2006 - IPC E21B10/16 

FIELD: rock cutting tools, particularly cutting structures thereof.

SUBSTANCE: drill bit cutter comprises conical body with milled teeth at cutter crown located near peripheral crown. Teeth directed along body generatrix are arranged so that each second tooth is connected to the crown. Teeth adjacent said ones are turned in opposite direction through 10-20° relatively to the generatrix. Teeth connected to outer crown end are spaced apart equal distances.

EFFECT: increased operational efficiency and provision of three-dimensional rock cutting.

2 cl, 2 dwg