the cutting element being movable through the drilling pipe and laterally shiftable

Full Title

Drill bits > characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe > the cutting element being movable through the drilling pipe and laterally shiftable

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