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Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
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SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
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Guide Heading:
Ventilation of mines or tunnels
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Ventilation of mines or tunnels; Distribution of ventilating currents (ventilating rooms or spaces in general F24F)
.
{
Ventilation of traffic tunnels (during construction E21F 1/04 to E21F 3/00)
}
E21F 1/006
.
{
Ventilation at the working face of galleries or tunnels
}
E21F 1/02
.
Test models (analogue computers therefor G06G 7/50)
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E21F 1/04
.
Air ducts (suspension devices E21F 17/02)
E21F 1/06
. .
Duct connections (tube connections in general F16L)
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.
Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators (
{
E21F 1/003 takes precedence
}
; ventilators in general F04D)
E21F 1/085
. .
{
using compressed gas injectors
}
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.
Air doors (
{
E21F 1/003 takes precedence; air locks E21F 1/145; dam doors E21F 17/12
}
; doors in general E06B)
E21F 1/12
. .
Devices for automatically opening air doors
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.
Air partitions; Air locks (
{
E21F 1/003 takes precedence
}
; dams E21F 17/103; air locks for foundations E02D)
E21F 1/145
. .
{
Air locks (air doors E21F 1/10; dam doors E21F 17/12)
}
.
Shaft covers
E21F 1/18
.
Gravity flow ventilation (E21F 1/02 to E21F 1/16 take precedence)
Cooling or drying of air (air-conditioning rooms or spaces in general F24F)
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Guide Heading:
Safety devices (flue-gas indicators G01N); Rescue devices
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Means or methods for preventing, binding, depositing, or removing dust
{
(in combination with mining machines E21C 35/22)
}
; Preventing explosions or fires (dams E21F 17/103; applying liquids or other fluent materials to surfaces in general B05)
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E21F 5/02
.
by wetting or spraying
E21F 5/04
. .
Spraying barriers (spray nipples, spraying in general B05B, B05D; picks with arrangements of fluid-spraying nozzles E21C 35/187)
E21F 5/06
. .
Fluids used for spraying
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.
Rock dusting of mines; Depositing other protective substances
E21F 5/10
. .
Devices for rock dusting
E21F 5/12
. .
Composition of rock dust
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.
Fluid barriers or rock dusters made to work by, or at the same time as, shots or explosions
E21F 5/143
. .
{
Fluid barriers
}
E21F 5/146
. .
{
Rock dusters
}
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
{
(injections for improving soil or rock E21D 9/001; borehole closures, i.e. packers, for use during the injection process E21B 33/12)
}
.
Drawing-off or depositing dust (dust-removing while drilling E21C 7/00; while slitting E21C 35/22)
Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
Devices preventing sparking of machines or apparatus (preventing sparking of electric machines or apparatus H01K, H02K)
Rescue devices or other safety devices, e.g. safety chambers, escape ways (respiratory apparatus A62B 7/00; revival apparatus A62B 33/00; breathing aids for curative purposes A61H 31/00)
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Transport specially adapted to underground conditions (mine cars B61D; transport in general, loading
{
unless specially adapted to underground conditions
}
B65G)
.
{
Crushing devices specifically for conveying in mines
}
E21F 13/004
.
{
Staff transport system
}
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.
{
Equipment transport systems
}
E21F 13/008
. .
{
for mine roof support units for step-by-step movement
}
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.
{
Transport of mined mineral
}
in galleries
E21F 13/025
. .
{
Shuttle cars
}
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E21F 13/04
.
{
Transport of mined material
}
in gravity inclines; in staple or inclined shafts
E21F 13/042
. .
{
Vertical hydraulic conveying of coal (conveying by water flow in general B65G 53/00)
}
E21F 13/045
. .
{
Bunkers specially adapted for mining purposes (chutes in general B65G 11/00)
}
E21F 13/047
. .
{
comprising helically running channels (chutes of helical form in general B65G 11/06)
}
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E21F 13/06
.
{
Transport of mined material
}
at or adjacent to the working face
E21F 13/061
. .
{
Chutes and braking conveyers for average and steep slopes, adapted for mining purposes (chutes in general B65G 11/00)
}
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E21F 13/063
. .
{
Loading devices for use in mining
}
E21F 13/065
. . .
{
Scrapers (digging devices guided by cables E02F 3/54; combined with planing means E21C 27/42)
}
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E21F 13/066
. .
{
Scraper chain conveyers (in general B65G 19/00)
}
E21F 13/068
. . .
{
Special adaptations for use at the junction of the working face with the gallery, e.g. driving stations coupled to the driving station of the winning machine
}
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.
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 13/083
. .
{
Conveyer belts removing methods or devices
}
E21F 13/086
. .
{
Armoured conveyers shifting devices
}
E21F 13/10
.
Anchorings for conveyers
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Methods or devices for placing filling-up materials in underground workings (dams E21F 17/103;
{
chocks made of flexible containers filled with backfilling material E21D 15/483
}
)
.
{
characterised by the kind or composition of the backfilling material
}
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.
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
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.
Filling-up hydraulically or pneumatically (hydraulic or pneumatic transport devices B65G; pipes, pipe couplings F16L)
E21F 15/10
. .
Hydraulic or pneumatic filling-up machines
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Drainage (keeping dry foundation sites or other areas in the ground E02D 19/00)
E21F 16/02
.
of tunnels
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Methods or devices for use in mines or tunnels, not covered elsewhere (mine lighting F21, H05B)
.
Suspension devices for tubes or the like, e.g. for ventilating ducts (supporting pipes, cables or protective tubing in general F16L 3/00 to F16L 7/00)
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E21F 17/04
.
Distributing means for power supply in mines
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)
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.
Dams, e.g. for ventilation
E21F 17/107
. .
inflatable
E21F 17/12
. .
Dam doors
{
(air doors E21F 1/10; air locks E21F 1/145)
}
.
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)
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E21F 17/18
.
Special adaptations of signalling or alarm devices (for mine lifts B66B; gas-sensitive devices per se G01N)
E21F 17/185
. .
{
Rock-pressure control devices with or without alarm devices; Alarm devices in case of roof subsidence (props with load-measuring devices E21D 15/46)
}
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013