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(19)

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2 517 420

(13)

(51)

IPC

E21B10/60(2006-01-01)

(21) (22)

Application

2013112137/03, 2013-03-20

(24)

Start date

2013-03-20

(22)

Actual filing date

2013-03-20

(45)

Published

2014-05-27

(72)

Inventor

Serikov Dmitrij Jur'EvichJasashin Vitalij Anatol'EvichKomarov Mikhail AlekseevichPanin Nikolaj MitrofanovichSorokin Vladimir Fedorovich

(73)

Holder

Panin Nikolaj Mitrofanovich

DRILL BIT Russian patent published in 2014 - IPC E21B10/60

Abstract RU 2517420 C1

FIELD: mining.

SUBSTANCE: drill bit comprises hollow body with connection thread and vanes reinforced with rock-crushing elements and flushing system including pressure and dual takeoff channels. Said offtake channels are equipped with rectangular flow section. Bimetal plate is fitted in every said channel. Said plate changes pressure channel flow section at the body temperature change.

EFFECT: higher efficiency of drill bit operation owing to improved flushing.

4 cl, 3 dwg

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RU 2 517 420 C1

Authors

Serikov Dmitrij Jur'Evich

Jasashin Vitalij Anatol'Evich

Komarov Mikhail Alekseevich

Panin Nikolaj Mitrofanovich

Sorokin Vladimir Fedorovich

Dates

2014-05-27—Published

2013-03-20—Filed