IPC Subgroup
E21C 29/04 by cable or chains
Introduced: September 1968
Last revised: January 2006
Full Title
Propulsion of machines for slitting or completely freeing the mineral from the seam > by cable or chains
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- EARTH OR ROCK DRILLING; MINING
- Subclass:
- MINING OR QUARRYING
3 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- E21C 29/06 anchored at one or both ends to the mine working face
- E21C 29/14 by haulage cable or chain pulling the machine along the working face
- E21C 29/2 with safety devices operating in the event of breakage of the cable or chain