IPC Subgroup
E21B 10/46 characterised by wear resisting parts, e.g. diamond inserts
Introduced: January 1980
Last revised: January 2006
Full Title
Drill bits > characterised by wear resisting parts, e.g. diamond inserts
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
5 direct subcodes
Child Classifications
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- E21B 10/48 the bit being of core type
- E21B 10/5 the bit being of roller type
- E21B 10/54 the bit being of the rotary drag type, e.g. fork-type bits
- E21B 10/56 Button-type inserts
- E21B 10/58 Chisel-type inserts