DRILL BIT EXTRACTION MACHINE

PROBLEM TO BE SOLVED: To provide a drill bit extraction machine that readily extracts a drill bit fitted at a tip of a drilling rod, without destroying the drill bit.SOLUTION: A drill bit extraction machine 1 includes: a rod retainer 10 for retaining a rod 5; an active plate 35 installed slidably in...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	SAEKI YASUTERU
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS HAND TOOLS MANIPULATORS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PERFORMING OPERATIONS PORTABLE POWER-DRIVEN TOOLS TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FORFASTENING, CONNECTING, DISENGAGING OR HOLDING TRANSPORTING
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