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(19)

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2 179 619

(13)

(51)

IPC

(21) (22)

Application

2000110580/03, 2000-04-28

(24)

Start date

2000-04-28

(22)

Actual filing date

2000-04-28

(45)

Published

2002-02-20

(72)

Inventor

Markov O.A.Bogomolov R.M.Mokrousov V.P.Suslikov A.V.Markov V.O.

(73)

Holder

Markov Oleg AndreevichBogomolov Rodion MikhajlovichMokrousov Vjacheslav PetrovichSuslikov Aleksandr Vasil'EvichMarkov Vladimir Olegovich

DRILL BIT Russian patent published in 2002 - IPC

Abstract RU 2179619 C2

FIELD: rock-breaking tools. SUBSTANCE: drill bit has body with washing conduits and rock-breaking and calibration rotary bits anchored on body. Body is made of two or more sections. Rotary bit with rock-breaking members is mounted with the use of antifriction and plain bearings on leg of pivot of one of sections inclined downward and inside and two calibration rotary bits are so installed in windows of second or second and third sections that their axes are parallel to axis of drill bit. EFFECT: enhanced operational efficiency and reliability of drill bit. 4 cl, 15 dwg

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RU 2 179 619 C2

Authors

Markov O.A.

Bogomolov R.M.

Mokrousov V.P.

Suslikov A.V.

Markov V.O.

Dates

2002-02-20—Published

2000-04-28—Filed