Hardfacing Around Ball Loading Hole for Earth-Boring Bit

A rotary cone earth boring bit has at least one bit leg with a cone retaining ball passage that intersects an outer surface of the bit leg and is closed by a ball plug. An upwardly curved lower hardfacing bead is on the outer surface of the bit leg at least partially below the ball plug. A downwardl...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	NEHRING KEITH L, 'KEITH' LUCE DAVID K, MASSEY ALAN J
Format:	Patent
Sprache:	eng
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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