DRILL BIT Russian patent published in 1994 - IPC

Abstract RU 2006568 C1

FIELD: mining industry. SUBSTANCE: drill bit has rest in the form frontal blade 11 attached to walls of slot between blades 6 with pads 9. Pads 9 are located between front 7 and rear 8 edges perpendicular to longitudinal axis of drill bit with lower position of blades 6. Front 7 and rear 8 edges are arranged in axial plane of drill bit. Rock breaking edge of blade 11 is located above pads 9. EFFECT: improved efficiency of drilling when conducting geological prospecting. 2 dwg

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RU 2 006 568 C1

Authors

Kuznetsov A.V.

Dates

1994-01-30—Published

1991-12-02—Filed