ROTATION BIT Russian patent published in 2002 - IPC

Abstract RU 2186193 C2

FIELD: rock-cutting tools, particularly, drilling bits of cutting type. SUBSTANCE: rotation bit consists of body with stepped blades with hard-faces cutting members. Each cutting member is displaced relative to plane running through bit radius for value α_i, which is determined by definite calculation formula. EFFECT: higher efficiency of rock cutting due to rational rotation of bit cutting structure. 2 dwg

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RU 2 186 193 C2

Authors

Messer A.G.

Mokin E.A.

Barabashkina O.I.

Dates

2002-07-27—Published

1999-10-19—Filed