Drill Bit for a Drill Assembly Including a Friction Bolt

Abstract A drill bit for a drill assembly including a friction bolt defining a longitudinal axial passage, the drill bit comprising a first bit body at its leading end said first bit body including a first cutting part and being adapted to releasibly engage with a second bit body; wherein the drill...

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Bibliographische Detailangaben
1. Verfasser:	McLaren, Matthew David
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS SHAFTS TUNNELS
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Beschreibung
Zusammenfassung:	Abstract A drill bit for a drill assembly including a friction bolt defining a longitudinal axial passage, the drill bit comprising a first bit body at its leading end said first bit body including a first cutting part and being adapted to releasibly engage with a second bit body; wherein the drill bit is adapted to pass through the longitudinal axial passage in the friction bolt. N0 rNL ci )