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.

 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
 E21C 25/00 - 
E21C 39/00
Cutting; Slitting; Dislodging
P:80 E21C 25/00
Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/00)
P:90 E21C 27/00
Machines which completely free the mineral from the seam (rods, drums, saws, discs or chains for making slits E21C 25/00)
P:120 E21C 29/00
Propulsion of machines for slitting or completely freeing the mineral from the seam
P:100 E21C 31/00
Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
P:110 E21C 33/00
Trucks or other devices for transporting machines for slitting or completely freeing the mineral from the seam
P:130 E21C 35/00
Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C 25/00-E21C 33/00, E21C 37/00 or E21C 39/00
P:50 E21C 37/00
Other methods or devices for dislodging with or without loading (breaking-down by means inserted in slits E21C 27/00)
P:60 E21C 39/00
Devices for testing in situ the hardness or other properties of minerals, e.g. for giving information as to the selection of suitable mining tools
 E21C 41/00 - 
E21C 51/00
Methods of mining or quarrying; Open-pit mining; Layouts therefor (methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells E21B 43/00)
P:40 E21C 41/00
Methods of underground or surface mining (E21C 45/00 takes precedence); Layouts therefor (for peat E21C 49/00)  [5]
P:30 E21C 45/00
Methods of hydraulic mining; Hydraulic monitors (E21C 25/00 takes precedence)  [5]
P:70 E21C 47/00
Machines for obtaining, or the removal of, materials in open-pit mines (obtaining peat E21C 49/00)
P:20 E21C 49/00
Obtaining peat; Machines therefor (treating peat C10F)
P:10 E21C 50/00
Obtaining minerals from underwater, not otherwise provided for (suction dredgers or component parts thereof E02F 3/88; equipment for conveying or separating excavated material E02F 7/00; dippers G01N 1/12)  [5]
P:0 E21C 51/00
Apparatus for, or methods of, winning materials from extraterrestrial sources (cosmonautics B64G)  [2]