IPC Subgroup
E21D 15/5 Component parts or details of props
Introduced: September 1968
Last revised: January 2006
Full Title
Props; Chocks > Component parts or details of props
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- EARTH OR ROCK DRILLING; MINING
- Subclass:
- SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
5 direct subcodes
Child Classifications
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- E21D 15/502 Prop bodies characterised by their shape, e.g. of specified cross-section
- E21D 15/51 specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D 15/52 Extensible units located above or below standard props
- E21D 15/54 Details of the ends of props
- E21D 15/56 Details of locks of telescopic props