REACTION COUNTERBALANCED EARTH BORING

Earth boring using a machine having a plurality of cutters which are disposed at mechanically balanced positions on a casing co-axial with and rotatable about the center axis of the machine, the output of a motor being divided into two, one output being used to rotate the cutters about their own axe...

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1. Verfasser:	IKEDA N,JA
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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creator	IKEDA N,JA
description	Earth boring using a machine having a plurality of cutters which are disposed at mechanically balanced positions on a casing co-axial with and rotatable about the center axis of the machine, the output of a motor being divided into two, one output being used to rotate the cutters about their own axes in one direction, the other being used to rotate the casing in the opposite direction, the total torque for rotating the cutters being substantially equal to the torque for rotating the casing whereby the reaction moment required for supporting the machine is negligible.
format	Patent
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subjects	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
title	REACTION COUNTERBALANCED EARTH BORING
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