IPC Subgroup
E21D 15/06 with parts joined by a lock, with or without slight axial adjustability
Introduced: September 1968
Last revised: January 2006
Full Title
Props; Chocks > Non-telescopic props > with parts joined by a lock, with or without slight axial adjustability
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- EARTH OR ROCK DRILLING; MINING
- Subclass:
- SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
3 direct subcodes
Child Classifications
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- E21D 15/08 with toggle joint connection
- E21D 15/1 with dog-clutch or pin-and-hole connection
- E21D 15/12 with locking devices located near head or foot