DRILL BIT Russian patent published in 1995 - IPC

Abstract RU 2039195 C1

FIELD: drilling. SUBSTANCE: drill bit has body with cleansing canals, solid-alloy inserts, hollow fixing member. The member has outer side conical surface engaged with side surface of inserts, and threading cylindrical surface engaged with threading surface in body in drill bit. EFFECT: drill bit is used in drilling. 3 dwg

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RU 2 039 195 C1

Authors

Kuklin S.A.

Dvornikov L.T.

Dates

1995-07-09—Published

1992-03-26—Filed