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PCE
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DIFF Subgroup
E21C 27/32

by adjustable or non-adjustable planing means with or without loading arrangements (by percussed planing means E21C27/46)

Introduced: September 1968

Title

Titles differ between systems:

IPC: by adjustable or non-adjustable planing means with or without loading arrangements

CPC: by adjustable or non-adjustable planing means with or without loading arrangements (by percussed planing means E21C27/46)

Full Title

Full titles differ between systems:

IPC:

Machines which completely free the mineral from the seam > Mineral freed by means not involving slitting > by adjustable or non-adjustable planing means with or without loading arrangements

CPC:

Machines which completely free the mineral from the seam > Mineral freed by means not involving slitting > by adjustable or non-adjustable planing means with or without loading arrangements (by percussed planing means E21C27/46)

IPC and CPC are identically structured here. All 6 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • E21C 27/36 Machine self-propelled along the working face IPC+CPC Available in IPC and CPC
  • E21C 27/38 Machine stationary while planing in an arc IPC+CPC Available in IPC and CPC
  • E21C 27/40 Machine and its planing tool making alternative step-wise movements along the working face IPC+CPC Available in IPC and CPC
  • E21C 27/42 combined with scraper or collector box IPC+CPC Available in IPC and CPC
  • E21C 27/44 Planing knives (mining picks E21C35/18) IPC+CPC Available in IPC and CPC