HARD-ALLOY INSERT Russian patent published in 2000 - IPC

Abstract RU 2160816 C2

FIELD: drilling of blast holes in rocks. SUBSTANCE: invention is related in particular to drill bits used for rock drilling. Hard- alloy insert for drill bit has working surface and conduit. Axis of conduit is displaced relative to axis of insert with formation of nonuniform thickness of its wall, thinner part of wall being located closer to axis of bit and thicker part being positioned towards its periphery. Wear of insert should be more uniform thanks to strengthening of peripheral part. EFFECT: prolonged wear resistance of inserts. 5 dwg

Similar patents RU2160816C2

Title	Year	Author	Number
HARD-ALLOY INSERT FOR CROWN BIT	1998	Dvornikov L.T. Vechuzhanin D.S.	RU2202030C2
HARD METAL INSERT FOR CROWN BITS	1999	Dvornikov L.T. Gubanov E.F.	RU2167993C1
CROWN BIT FOR DRILLING WITH PERFORATOR	1994	Linenko-Mel'Nikov Jurij Petrovich[Ua]	RU2067151C1
	0	Kuklin Sergej Aleksandrovich Dvornikov Leonid Trofimovich	SU1778265A1
DRILL BIT	1992	Kuklin S.A. Dvornikov L.T.	RU2039195C1
CROWN BIT FOR PERCUSSIVE-ROTARY DRILLING	2001	Klimov B.G. Gil'Janova L.N. Matveeva L.I.	RU2202029C2
ROTARY-STRIKING DRILLING CROWN	2002	Klimov B.G. Khadonov A.V.	RU2252998C2
CROWN BIT FOR ROTARY-PERCUSSION DRILLING	1992	Вondarev Кonstantin Dmitrievich Рavshok Мikhail Gennadievich Uralov Vladimir Sergeevich Fedorchenko Viktor Аlekseevich Кhalin Аleksandr L'Vovich	RU2019674C1
DRILL BIT FOR PERCUSSION-ROTARY DRILLING	1994	Linenko-Mel'Nikov Jurij Petrovich[Ua] Lisovskij Anatolij Feliksovich[Ua]	RU2077650C1
HARD-ALLOY INSERT FOR DRILL BITS	1995	Dvornikov L.T. Vechuzhanin D.S.	RU2090735C1

RU 2 160 816 C2

Authors

Bojkov V.V.

Dvornikov L.T.

Kuklin S.A.

Dates

2000-12-20—Published

1999-01-05—Filed