Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21C - Mining or quarrying
More topics under "E21C - Mining or quarrying" (17,850)
E21C 25 - Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (2,629)
E21C 27 - Machines which completely free the mineral from the seam (1,602)
E21C 29 - Propulsion of machines for slitting or completely freeing the mineral from the seam (839)
E21C 31 - Driving means incorporated in machines for slitting or completely freeing the mineral from the seam (738)
E21C 33 - Trucks or other devices for transporting machines for slitting or completely freeing the mineral from the seam (47)
E21C 35 - Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups , or (6,127)
E21C 37 - Other methods or devices for dislodging with or without loading (1,249)
E21C 39 - 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 (220)
E21C 41 - Methods of underground or surface mining; Layouts therefor (2,789)
E21C 45 - Methods of hydraulic mining; Hydraulic monitors (347)
E21C 47 - Machines for obtaining, or the removal of, materials in open-pit mines (773)
E21C 49 - Obtaining peat; Machines therefor (68)
E21C 50 - Obtaining minerals from underwater, not otherwise provided for (408)
E21C 51 - Apparatus for, or methods of, winning materials from extraterrestrial sources (14)
Patents for E21C - Mining or quarrying (121)
01/2014
01/30/2014US20140030690 Systems and Methods for Testing Over a Distributed Network
10/2013
10/08/2013US8554129 Systems and methods for testing over a distributed network
08/2013
08/13/2013CA2584056C Boom arrangement for a scaling device and scaling device
12/2011
12/28/2011CN101827124B 用于分布式网络上的考试的系统和方法 System and method for examination on a distributed network for
08/2011
08/02/2011US7987929 Arrangement for processing dust
07/2011
07/27/2011CN101316641B Arrangement for processing dust
05/2011
05/17/2011US7942481 Rock drill and method of breaking rock
05/10/2011CA2623521C Method of driving plurality of mine vehicles in mine, and transport system
04/2011
04/20/2011CN101198763B Drill
12/2010
12/23/2010US20100320000 Arrangement for processing dust
12/08/2010EP1931554B1 Method of driving plurality of mine vehicles in mine, and transport system
11/2010
11/09/2010US7831345 Method of driving plurality of mine vehicles in mine, and transport system
09/2010
09/08/2010CN101827124A Systems and methods for testing over a distributed network
05/2010
05/26/2010CN1732490B Systems for testing over a distributed network
05/26/2010CN101277863B Method of driving plurality of mine vehicles in mine, and transport system
05/25/2010CA2601568C Rock drill and method of breaking rock
04/2010
04/13/2010US7695072 Boom arrangement for a scaling device and scaling device
06/2009
06/02/2009CA2429447C Drillhole blasting
05/2009
05/14/2009US20090121537 Boom arrangement for a scaling device and scaling device
05/07/2009US20090118889 Method of Driving Plurality of Mine Vehicles in Mine, and Transport System
04/2009
04/23/2009DE19983830B4 Schneidvorrichtung Cutter
04/22/2009EP1931554A4 Method of driving plurality of mine vehicles in mine, and transport system
12/2008
12/03/2008CN101316641A Arrangement for processing dust
10/2008
10/02/2008US20080236433 Rock Drill and Method of Breaking Rock
10/01/2008CN101277863A Method of driving plurality of mine vehicles in mine, and transport system
08/2008
08/06/2008EP1951404A1 Arrangement for processing dust
06/2008
06/18/2008EP1931554A1 Method of driving plurality of mine vehicles in mine, and transport system
06/11/2008CN101198763A Rock drill and method of breaking rock
02/2008
02/19/2008CA2380404C Cutting arrangement
12/2007
12/26/2007EP1869287A2 Rock drill and method of breaking rock
07/2007
07/18/2007EP1807607A1 Boom arrangement for a scaling device and scaling device
05/2007
05/31/2007WO2007060294A1 Arrangement for processing dust
04/2007
04/12/2007WO2007039669A1 Method of driving plurality of mine vehicles in mine, and transport system
04/10/2007CA2314114C Improved rock drill bit with neck protection
02/2007
02/13/2007US7175237 Hewing or cutting roll
11/2006
11/02/2006WO2006099637A3 Rock drill and method of breaking rock
09/2006
09/21/2006WO2006099637A2 Rock drill and method of breaking rock
07/2006
07/18/2006CA2385547C Mounting attachment and bearing system for an industrial earth-boring cutter
05/2006
05/30/2006US7052092 Drillhole blasting
05/11/2006WO2006049544A1 Boom arrangement for a scaling device and scaling device
05/11/2006CA2584056A1 Boom arrangement for a scaling device and scaling device
03/2006
03/23/2006US20060061206 Tool, cutter and button disk
03/15/2006EP1336074B1 Drillhole blasting
02/2006
02/08/2006CN1732490A Systems and method for testing over a distributed network
11/2005
11/10/2005US20050248209 Hewing or cutting roll
09/2005
09/22/2005US20050206216 Drum turning mechanism for continuous miners and longwall shearers
02/2005
02/02/2005CN1187514C Cutting arrangement
11/2004
11/04/2004US20040221013 Systems and method for testing over a distributed network
11/02/2004CA2191423C Hydraulic actuator
08/2004
08/19/2004WO2004053292A3 Systems and methods for testing over a distributed network
06/2004
06/24/2004WO2004053292A2 Systems and methods for testing over a distributed network
05/2004
05/27/2004US20040099445 Drillhole blasting
03/2004
03/30/2004US6712431 Cutting arrangement
03/23/2004US6708786 Mounting attachment and bearing system for an industrial earth-boring cutter
02/2004
02/11/2004CN1474930A Drillhole blasting
08/2003
08/20/2003EP1336074A1 Drillhole blasting
11/2002
11/14/2002US20020166702 Mounting attachment and bearing system for an industrial earth-boring cutter
09/2002
09/10/2002US6446739 Rock drill bit with neck protection
08/2002
08/07/2002EP1011931B1 A method and drilling apparatus to adjust the shape of a stroke pulse to be transmitted to the drill bit
05/2002
05/30/2002WO2002042711A1 Drillhole blasting
02/2002
02/13/2002CN1335910A Cutting arrangement
12/2001
12/25/2001US6332401 Method and apparatus for pressure wave suppression in small-charge blasting
12/06/2001WO2000034626A8 Cutting arrangement
11/2001
11/27/2001US6321655 Method and apparatus for flyrock control in small charge blasting
07/2001
07/24/2001CA2221069C Method for horizontal directional drilling of rock formations
07/24/2001CA2221068C Drill bit for horizontal directional drilling of rock formations
04/2001
04/03/2001US6209660 Drill bit shear relief for horizontal directional drilling of rock formations
06/2000
06/28/2000EP1011931A1 A method and drilling apparatus to adjust the shape of a stroke pulse to be transmitted to the drill bit
06/15/2000WO2000034626A1 Cutting arrangement
04/2000
04/11/2000US6047775 Blast hole drill pipe gripping mechanism
02/2000
02/29/2000US6029753 Increased efficiency percussion piston and method for operating same
08/1999
08/10/1999US5934391 Sonde housing door hold-down system
08/03/1999US5931240 Drill bit concave steering channel for horizontal directional drilling
04/1999
04/06/1999CA1340489C Actuator and communication systems
01/1999
01/07/1999EP0757157A4 Instrument for breaking up solid material
10/1998
10/27/1998US5826482 Hydraulic actuator
12/1997
12/30/1997US5702160 Tool for crushing hard material
02/1997
02/05/1997EP0757157A1 Instrument for breaking up solid material
11/1996
11/28/1996WO1996037345A1 A method and drilling apparatus to adjust the shape of a stroke pulse to be transmitted to the drill bit
10/1996
10/22/1996CA1338675C Actuator and communication systems
08/1996
08/25/1996CA2169614A1 Method and device for aligning a drill aggregate
08/22/1996WO1996025585A1 Instrument for breaking up solid material
12/1994
12/14/1994EP0409880B1 Actuator and communication system
08/1994
08/10/1994EP0609964A2 Adjustable reactance device and method
07/1992
07/15/1992EP0304421B1 Open-cut mining cutter
10/1991
10/17/1991CA2040361A1 Percussion tool fluid filter apparatus
09/1991
09/10/1991CA1288735C Dragline apparatus
08/1991
08/27/1991CA1287990C Anchor bolt assembly
07/1991
07/10/1991EP0409880A4 Actuator and communication system
01/1991
01/30/1991EP0409880A1 Actuator and communication system.
01/16/1991CN1011252B Improved dragline apparatus
10/1990
10/02/1990US4960306 Open-cut mining cutter
10/1989
10/19/1989WO1989010030A1 Actuator and communication system
09/1989
09/26/1989CA1261888A1 Open-cut-mining milling unit
03/1989
03/01/1989EP0304421A1 Open-cut mining cutter.
09/1988
09/27/1988CA1242463A1 Multi-insert cutter bit
08/1987
08/05/1987CN86106946A Improved dragline apparatus
01/1986
01/21/1986CA1199649A1 Means for milling peat
07/1985
07/16/1985CA1190568A1 Means for pneumatic gathering of milled peat
06/1985
06/04/1985CA1188293A1 Drill cuttings conveying head with wet cuttings diverter
1 2