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PCE
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IPC Subgroup
E21B 1/14

driven by a rotating mechanism

Introduced: January 2000

Last revised: January 2006

Full Title

Percussion drilling > with a reciprocating impulse member > driven by a rotating mechanism

Classification Context

Section:
FIXED CONSTRUCTIONS
Class:
EARTH OR ROCK DRILLING; MINING
Subclass:
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS

2 direct subcodes

Child Classifications

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  • E21B 1/2 formed as centrifugal hammers