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2 164 282

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IPC

(21) (22)

Application

99117676/03, 1999-08-09

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Start date

1999-08-09

(22)

Actual filing date

1999-08-09

(45)

Published

2001-03-20

(72)

Inventor

Takhautdinov Sh.F.Jusupov I.G.Farkhutdinov R.G.Abdrakhmanov G.S.Zajnullin A.G.Chasovskij P.P.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Tatarskij Nauchno-Issledovatel'Skij I Proektnyj Institut Nefti

GEAR TO DRILL ADDITIONAL SHAFT FROM HOLE Russian patent published in 2001 - IPC

Abstract RU 2164282 C1

FIELD: hole drilling. SUBSTANCE: invention specifically refers to tools used to drill new shafts from holes. Gear has hollow body made in the form of tube corrugated longitudinally. One end of tube is fixed on wedge, the other end is capped. Spaces of body and enclosure are leak-tight and intercommunicate. EFFECT: enhanced operational reliability of gear thanks to simplification of its structure and provision for accurate and reliable setting in hole. 1 cl 3 dwg

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RU 2 164 282 C1

Authors

Takhautdinov Sh.F.

Jusupov I.G.

Farkhutdinov R.G.

Abdrakhmanov G.S.

Zajnullin A.G.

Chasovskij P.P.

Dates

2001-03-20—Published

1999-08-09—Filed