E
SECTION E — FIXED CONSTRUCTIONS
  
EARTH OR ROCK DRILLING; MINING
 E21
EARTH OR ROCK DRILLING; MINING
 E21

Note(s)

In this class, the following term is used with the meaning indicated:

  • "drilling" covers boring and vice versa.

 E21B
EARTH OR ROCK DRILLING (mining, quarrying E21C; making shafts, driving galleries or tunnels E21D); OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS  [5]
 E21B

Note(s)

  1. This subclass covers[7]
    • primarily equipment for drilling of earth or rock in their natural formation; [7]
    • similar equipment for drilling of man-made structures in situ, e.g. of road surfaces or concrete structures. [7]
  2. This subclass does not cover[7]
    • hand-held drilling machines, e.g. for domestic use; [7]
    • drilling equipment for manufacturing operations, i.e. where an article is worked, e.g. for further processing; [7]
    which are covered by relevant subclasses of section B, e.g. B23B[7]
 E21B
Subclass index
METHODS OR APPARATUS FOR DRILLING 1/00 - 7/00
DRILLING TOOLS; ACCESSORIES THEREFOR 10/00, 11/00; 12/00
OTHER EQUIPMENT OR DETAILS FOR DRILLING; WELL EQUIPMENT OR MAINTENANCE
Derricks; drilling rods or the like 15/00; 17/00, 19/00
Flushing or cleaning; sealing; heating or cooling 21/00, 37/00; 33/00; 36/00
Valve arrangements; fire-fighting 34/00; 35/00
Other equipment or details 23/00 - 31/00, 40/00, 41/00
OBTAINING FLUIDS FROM WELLS 43/00
CONTROL; SURVEYING OR TESTING 44/00; 45/00 - 49/00

 E21C
MINING OR QUARRYING
 E21C
Subclass index
CUTTING; SLITTING; DISLODGING
General structure of machines 25/00, 27/00
Details 29/00, 31/00, 35/00
Other devices 33/00, 37/00, 39/00
METHODS OF MINING OR QUARRYING; OPEN-PIT MINING 41/00, 45/00; 47/00, 49/00
OBTAINING MINERALS FROM UNDERWATER 50/00
WINNING MATERIALS FROM EXTRATERRESTRIAL SOURCES 51/00

 E21D
SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS (soil-conditioning or soil-stabilising materials C09K 17/00; cutting machines for mining or quarrying E21C; safety devices, transport, rescue, ventilation or drainage E21F)  [2,6]
 E21D

Note(s)

  1. This subclass covers methods or apparatus for making or lining tunnels, galleries or large underground chambers, using underground mining methods only, i.e. not involving disturbance of the ground surface.  [6]
  2. This subclass does not cover underground spaces made by foundation engineering, i.e. involving disturbance of the ground surface, which are covered by subclass E02D.  [6]
 E21D
Subclass index
MAKING SHAFTS; LININGS THEREFOR 1/00, 3/00, 7/00; 5/00
MAKING TUNNELS OR GALLERIES; LININGS THEREFOR 9/00; 11/00
MAKING UNDERGROUND CHAMBERS; LININGS THEREFOR 13/00; 11/00
WORKING-FACE SUPPORTS OR COVERS 15/00, 17/00, 19/00, 21/00
SUPPORTS FOR STEP-BY-STEP MOVEMENT 23/00
SETTING ANCHORING BOLTS 20/00

 E21F
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS  [2]
 E21F
Subclass index
VENTILATION 1/00, 3/00
DRAINAGE 16/00
SAFETY DEVICES, RESCUE DEVICES 5/00 - 11/00
TRANSPORT; FILLING-UP 13/00; 15/00
OTHER METHODS OR DEVICES 17/00