EARTH BORING APPARATUS

An earth boring apparatus in which cutters are secured to planetary gears meshing with a sun gear secured to a power driven center shaft, the planetary gears being rotatably carried by a planetary carrier rotatable about the axis of the center shaft, whereby each cutter is rotatable about its own ax...

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Bibliographic Details
Main Authors OMURA K,JA, IKEDA N,JA
Format Patent
LanguageEnglish
Published 13.11.1973
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
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Summary:An earth boring apparatus in which cutters are secured to planetary gears meshing with a sun gear secured to a power driven center shaft, the planetary gears being rotatably carried by a planetary carrier rotatable about the axis of the center shaft, whereby each cutter is rotatable about its own axis and also can revolve about the axis of the center shaft.
Bibliography:Application Number: USD3771611