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.

 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
 E21F 1/00 - 
E21F 3/00
Ventilation of mines or tunnels
P:50 E21F 1/00
Ventilation of mines or tunnels; Distribution of ventilating currents (ventilating rooms or spaces in general F24F)  [2]
 E21F 1/02
·  Test models (analogue computers therefor G06G 7/50)
 E21F 1/04
·  Air ducts (suspension devices E21F 17/02)
 E21F 1/06
·  ·  Duct connections (tube connections in general F16L)
 E21F 1/08
·  Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators (ventilators per se F04D)
 E21F 1/10
·  Air doors (doors in general E06B)
 E21F 1/12
·  ·  Devices for automatically opening air doors
 E21F 1/14
·  Air partitions; Air locks (dams E21F 17/103; air locks for foundations E02D)  [6]
 E21F 1/16
·  Shaft covers
 E21F 1/18
·  Gravity-flow ventilation (E21F 1/02-E21F 1/16 take precedence)  [2]
P:30 E21F 3/00
Cooling or drying of air (air-conditioning rooms or spaces in general F24F)
 E21F 5/00 - 
E21F 13/00
Safety devices; Rescue devices
P:10 E21F 5/00
Means or methods for preventing, binding, depositing or removing dust; Preventing explosions or fires (dams E21F 17/103; applying liquids or other fluent materials to surfaces in general B05; flue-gas indicators G01N)  [6]
 E21F 5/02
·  by wetting or spraying
 E21F 5/04
·  ·  Spraying barriers (spray nipples, spraying in general B05B, B05D; picks with arrangement of fluid-spraying nozzles E21C 35/187)
 E21F 5/06
·  ·  Fluids used for spraying
 E21F 5/08
·  Rock dusting; Depositing other protective substances
 E21F 5/10
·  ·  Devices for rock dusting
 E21F 5/12
·  ·  Composition of rock dust
 E21F 5/14
·  Fluid barriers or rock dusters made to work by, or at the same time as, shots or explosions
 E21F 5/16
·  Layers of hygroscopic or other salts deposited on floors, walls, or the like, for binding dust; Deposition of such layers (dust-absorbing materials in general C09K 3/22)
 E21F 5/18
·  Impregnating walls, or the like, with liquids for binding dust
 E21F 5/20
·  Drawing-off or depositing dust (methods or apparatus for flushing boreholes E21B 21/00; while slitting E21C 35/22)  [1,7]
P:40 E21F 7/00
Methods or devices for drawing-off gases with or without subsequent use of the gas for any purpose
P:0 E21F 9/00
Devices preventing sparking of machines or apparatus (preventing sparking of electric machines or apparatus H01K, H02K)
P:20 E21F 11/00
Rescue devices or other safety devices, e.g. safety chambers, escape ways (breathing aids for curative purposes A61H 31/00; respiratory apparatus A62B 7/00; revival apparatus A62B 33/00)
P:60 E21F 13/00
Transport specially adapted to underground conditions (mine cars B61D; transport in general, loading B65G)
 E21F 13/02
·  in galleries
 E21F 13/04
·  in gravity inclines; in staple or inclined shafts
 E21F 13/06
·  at or adjacent to the working face
 E21F 13/08
·  Shifting conveyers or other transport devices from one location at the working face to another (guiding mining machines along conveyers for the cut mineral E21C 35/12; in combination with mine roof supports for step-by-step movement E21D 23/00)
 E21F 13/10
·  Anchorings for conveyers  [2]
P:70 E21F 15/00
Methods or devices for placing filling-up materials in underground workings (dams E21F 17/103)  [6]
 E21F 15/02
·  Supporting means, e.g. shuttering, for filling-up materials
 E21F 15/04
·  ·  Stowing mats; Goaf wire netting; Partition walls
 E21F 15/06
·  Filling-up mechanically
 E21F 15/08
·  Filling-up hydraulically or pneumatically (hydraulic or pneumatic transport devices B65G; pipes, pipe couplings F16L)
 E21F 15/10
·  ·  Hydraulic or pneumatic filling-up machines
P:80 E21F 16/00
Drainage (keeping dry foundation sites or other areas in the ground E02D 19/00)  [2]
 E21F 16/02
·  of tunnels  [2]
P:90 E21F 17/00
Methods or devices for use in mines or tunnels, not covered elsewhere (mine lighting F21, H05B)  [2]
 E21F 17/02
·  Suspension devices for tubes or the like, e.g. for ventilating ducts (supporting pipes, cables or protective tubing in general F16L 3/00-F16L 7/00)
 E21F 17/04
·  Distributing means for power supply  [2]
 E21F 17/06
·  ·  Distributing electric power; Cable networks; Conduits for cables (circuit arrangements for supplying or distributing electric power in general H02J)
 E21F 17/08
·  ·  Distributing hydraulic power; Pipe networks for hydraulic liquid (pipe-line systems in general F17D)
 E21F 17/10
·  ·  Distributing pneumatic power; Pipe networks for compressed air (pipe-line systems in general F17D)
 E21F 17/103
·  Dams, e.g. for ventilation  [6]
 E21F 17/107
·  ·  inflatable  [6]
 E21F 17/12
·  ·  Dam doors
 E21F 17/16
·  Modification of mine passages or chambers for storage purposes, especially for liquids or gases (storing fluids in natural or artificial cavities or chambers in the earth B65G 5/00)
 E21F 17/18
·  Special adaptations of signalling or alarm devices (for elevators, escalators or moving walkways B66B; gas-sensitive devices per se G01N)