|
E21F 1/00
|
Ventilation of mines or tunnels; Distribution of ventilating currents |
|
E21F 1/02
|
Test models |
|
E21F 1/04
|
Air ducts |
|
E21F 1/06
|
Duct connections |
|
E21F 1/08
|
Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators |
|
E21F 1/10
|
Air doors |
|
E21F 1/12
|
Devices for automatically opening air doors |
|
E21F 1/14
|
Air partitions; Air locks |
|
E21F 1/16
|
Shaft covers |
|
E21F 1/18
|
Gravity-flow ventilation |
|
E21F 3/00
|
Cooling or drying of air |
|
E21F 5/00
|
Means or methods for preventing, binding, depositing or removing dust; Preventing explosions or fires |
|
E21F 5/02
|
Means or methods for preventing, binding, depositing or removing dust; Preventing explosions or fires by wetting or spraying |
|
E21F 5/04
|
Spraying barriers |
|
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 |
|
E21F 5/18
|
Impregnating walls, or the like, with liquids for binding dust |
|
E21F 5/20
|
Drawing-off or depositing dust |
|
E21F 7/00
|
Methods or devices for drawing-off gases with or without subsequent use of the gas for any purpose |
|
E21F 9/00
|
Devices preventing sparking of machines or apparatus |
|
E21F 11/00
|
Rescue devices or other safety devices, e.g. safety chambers or escape ways |
|
E21F 13/00
|
Transport specially adapted to underground conditions |
|
E21F 13/02
|
Transport specially adapted to underground conditions in galleries |
|
E21F 13/04
|
Transport specially adapted to underground conditions in staple or inclined shafts |
|
E21F 13/06
|
Transport specially adapted to underground conditions at or adjacent to the working face |
|
E21F 13/08
|
Shifting conveyors or other transport devices from one location at the working face to another |
|
E21F 13/10
|
Anchorings for conveyors |
|
E21F 15/00
|
Methods or devices for placing filling-up materials in underground workings |
|
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 |
|
E21F 15/10
|
Hydraulic or pneumatic filling-up machines |
|
E21F 16/00
|
Drainage |
|
E21F 16/02
|
Drainage of tunnels |
|
E21F 17/00
|
Methods or devices for use in mines or tunnels, not covered elsewhere |
|
E21F 17/02
|
Suspension devices for tubes or the like, e.g. for ventilating ducts |
|
E21F 17/04
|
Distributing means for power supply |
|
E21F 17/06
|
Distributing electric power; Cable networks; Conduits for cables |
|
E21F 17/08
|
Distributing hydraulic power; Pipe networks for hydraulic liquid |
|
E21F 17/10
|
Distributing pneumatic power; Pipe networks for compressed air |
|
E21F 17/12
|
Dam doors |
|
E21F 17/16
|
Modification of mine passages or chambers for storage purposes, especially for liquids or gases |
|
E21F 17/18
|
Special adaptations of signalling or alarm devices |
|
E21F 17/103
|
Dams, e.g. for ventilation |
|
E21F 17/107
|
Dams, e.g. for ventilation inflatable |
