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
Fulltext...
Hierarchy...
Expanded...
F24F
)
[2]
P:30
E21F 3/00
Cooling or drying of air
(air-conditioning rooms or spaces in general
Fulltext...
Hierarchy...
Expanded...
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
Fulltext...
Hierarchy...
Expanded...
E21F 17/00
; applying liquids or other fluent materials to surfaces in general
Fulltext...
Hierarchy...
Expanded...
B05
; flue-gas indicators
Fulltext...
Hierarchy...
Expanded...
G01N
)
[6]
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
Fulltext...
Hierarchy...
Expanded...
H01K
,
Fulltext...
Hierarchy...
Expanded...
H02K
)
P:20
E21F 11/00
Rescue devices or other safety devices, e.g. safety chambers, escape ways
(breathing aids for curative purposes
Fulltext...
Hierarchy...
Expanded...
A61H 31/00
; respiratory apparatus
Fulltext...
Hierarchy...
Expanded...
A62B 7/00
; revival apparatus
Fulltext...
Hierarchy...
Expanded...
A62B 33/00
)
P:60
E21F 13/00
Transport specially adapted to underground conditions
(mine cars
Fulltext...
Hierarchy...
Expanded...
B61D
; transport in general, loading
Fulltext...
Hierarchy...
Expanded...
B65G
)
P:70
E21F 15/00
Methods or devices for placing filling-up materials in underground workings
(dams
Fulltext...
Hierarchy...
Expanded...
E21F 17/00
)
[6]
P:80
E21F 16/00
Drainage
(keeping dry foundation sites or other areas in the ground
Fulltext...
Hierarchy...
Expanded...
E02D 19/00
)
[2]
P:90
E21F 17/00
Methods or devices for use in mines or tunnels, not covered elsewhere
(mine lighting
Fulltext...
Hierarchy...
Expanded...
F21
,
Fulltext...
Hierarchy...
Expanded...
H05B
)
[2]