DRILL BIT Russian patent published in 1997 - IPC

Abstract RU 2078897 C1

FIELD: hole drilling. SUBSTANCE: drill bit includes body with cones. Side rinsing ducts are made in bosses of body, enclosures housing hydro monitor attachments with holes inclined to longitudinal axis are connected to body uniaxially with the aid of thread. Enclosures make it possible to bring: attachments closer to face and to arrange outlet holes with orientation relative to equipment of cones. EFFECT: enhanced drilling efficiency. 3 dwg

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RU 2 078 897 C1

Authors

Kalishin I.S.

Romanikhin N.V.

Anan'Ev S.A.

Dates

1997-05-10—Published

1994-04-12—Filed