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2 006 562

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C1

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IPC

(21) (22)

Application

4926202/03, 1991-04-08

(22)

Actual filing date

1991-04-08

(45)

Published

1994-01-30

(72)

Inventor

Sed'Ko A.P.Nagaev Kh.Kh.Troshkin A.N.Korochkin S.A.

(73)

Holder

Vostochnyj Nauchno-Issledovatel'Skij Gornorudnyj Institut

DEVICE FOR DRILLING SLIT SPACES Russian patent published in 1994 - IPC

Abstract RU 2006562 C1

FIELD: mining industry. SUBSTANCE: device for drilling slit spaces has striker with drill bit installed in bearing bushing in drilling string, guiding rod positioned in parallel to striker and wedge-spalling tool attached to rod and striker. For increase of efficiency device is provided with support members manufactured in the form of bearing skids and attached to rod on side opposite to point of attachment of wedge-spalling tool. EFFECT: increased efficiency. 2 dwg

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RU 2 006 562 C1

Authors

Sed'Ko A.P.

Nagaev Kh.Kh.

Troshkin A.N.

Korochkin S.A.

Dates

1994-01-30—Published

1991-04-08—Filed

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