CROWN BIT

FIELD: mining. ^ SUBSTANCE: crown bit comprises a body with a circular bore, telescopically joined crown rings with splines on contact surfaces and stepwise working ends reinforced with rock-breaking elements, and a unit of crown ring fixation against axial displacement relative to the body. The fix...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	PANIN NIKOLAJ MITROFANOVICH, MIKHAJLOV JURIJ VASIL'EVICH, KONONOV VIKTOR MIKHAJLOVICH, TSATURJAN EHDUARD OVANESOVICH, KOMAROV MIKHAIL ALEKSEEVICH
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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