THREE-ROLLER BIT

FIELD: rock breaking tools, flushing systems of three-roller bits. SUBSTANCE: three-roller bit includes arms making up body of bit, rolling cutters supported in bearings and combined flushing system comprising two side and one central nozzles. Central nozzle has narrowing upper part, cylindrical mid...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	MARIK VASILIJ BOGDANOVICH, GUK ROMAN IOSIFOVICH, BOGOMOLOV R.M, GAVRILENKO M.V, GERULA JAROSLAV IVANOVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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