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IPC Subgroup
E21C 27/32

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

Introduced: September 1968

Last revised: January 2006

Full Title

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

Classification Context

Section:
FIXED CONSTRUCTIONS
Class:
EARTH OR ROCK DRILLING; MINING
Subclass:
MINING OR QUARRYING

Related Keywords

PLANING in mining or quarrying

6 direct subcodes

Child Classifications

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  • E21C 27/36 Machine self-propelled along the working face
  • E21C 27/38 Machine stationary while planing in an arc
  • E21C 27/4 Machine and its planing tool making alternative step-wise movements along the working face
  • E21C 27/42 combined with scraper or collector box
  • E21C 27/44 Planing knives