DIFF Subgroup
E21D 15/50 Component parts or details of props (E21D15/43, E21D15/58, E21D15/60 take precedence)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Component parts or details of props
CPC: Component parts or details of props (E21D15/43, E21D15/58, E21D15/60 take precedence)
Full Title
Full titles differ between systems:
IPC:
Props; Chocks > Component parts or details of props
CPC:
Props (in the building art E04G25/00); Chocks > Component parts or details of props (E21D15/43, E21D15/58, E21D15/60 take precedence)
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
2 shared codes have differing titles between IPC and CPC.
Child Classifications
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- E21D 15/502 Prop bodies characterised by their shape, e.g. of specified cross-section IPC+CPC Available in IPC and CPC
- E21D 15/51 specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves +3 CPC IPC+CPC Available in IPC and CPC
- E21D 15/52 Extensible units located above or below standard props (for allowing step-by-step movement of cap E21D23/06; setting props or chocks E21D15/58) +2 CPC IPC+CPC Available in IPC and CPC
- E21D 15/54 Details of the ends of props (for permitting step-by-step movement E21D23/06) +1 CPC IPC+CPC Available in IPC and CPC