ROTATABLE CUTTING BIT ASSEMBLY

A roof drill bit assembly comprising a roof drill bit (20) and a chuck (50). The roof bit contains a cavity (28) which opens at the rearward end thereof. Upon assembly the bit (20) and the chuck (50), the cavity (28) receives the axially forward end of the chuck. A sealing member is between the roof...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	DANIEL C. SHEIRER
Format:	Patent
Sprache:	eng ; spa
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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Beschreibung
Zusammenfassung:	A roof drill bit assembly comprising a roof drill bit (20) and a chuck (50). The roof bit contains a cavity (28) which opens at the rearward end thereof. Upon assembly the bit (20) and the chuck (50), the cavity (28) receives the axially forward end of the chuck. A sealing member is between the roof drill bit (20) and the chuck (50) so as to provide a fluid-tight connection between the chuck (50) and the roof bit (20). Un montaje de broca de perforadora de techos que comprende una broca de perforadora de techos (20) y un portabroca (50). La broca de techo contiene una cavidad (28) que abre por el extremo posterior de ésta. En el montaje la broca (20) y el portabroca (50), la cavidad (28) recibe el extremo delantero del portabroca axialmente. Una pieza de sellado se encuentra entre la broca de perforacion de techos (20) y el portabroca (50) con el fin de proporcionar una conexion hermética al fluido entre el portabroca (50) y la broca de techo (20).