E21D - Shafts; Tunnels; Galleries; Large underground chambers

More topics under "E21D - Shafts; Tunnels; Galleries; Large underground chambers" (31,919)
E21D 1 - Sinking shafts (447)
E21D 11 - Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling (7,167)
E21D 13 - Large underground chambers; Methods or apparatus for making them (272)
E21D 15 - Props; Chocks (3,432)
E21D 17 - Caps for supporting mine roofs (547)
E21D 19 - Provisional protective covers for working space (559)
E21D 20 - Setting anchoring-bolts (3,685)
E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection (4,377)
E21D 23 - Mine roof supports for step-by-step movement, e.g. in combination with provisions for shifting of conveyers, mining machines, or guides therefor (3,544)
E21D 3 - Raising shafts, i.e. working upwards from the bottom (70)
E21D 5 - Lining shafts; Linings therefor (494)
E21D 7 - Shaft equipment, e.g. timbering within the shaft (218)
E21D 8 - Shafts not provided for in groups (10)
E21D 9 - Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries (7,097)

Patents for E21D - Shafts; Tunnels; Galleries; Large underground chambers (86)
04/2013
04/02/2013	CA2571548C An arrangement for affixing an expandable packer in a hole
05/2011
05/17/2011	US7942481 Rock drill and method of breaking rock
04/2011
04/20/2011	CN101198763B Drill
08/2010
08/24/2010	US7779908 Arrangement for affixing an expandable packer in a hole
05/2010
05/25/2010	CA2601568C Rock drill and method of breaking rock
11/2009
11/05/2009	US20090272052 Construction Element and Method for its Manufacture
02/2009
02/26/2009	US20090052995 Arrangement for injecting and affixing a reinforcing or anchoring element in a rock wall
02/25/2009	CN101372154A Apparatus for and method of lining passageways
02/17/2009	US7490440 Support device for a rib
12/2008
12/11/2008	US20080302526 Arrangement for Affixing an Expandable Packer in a Hole
11/2008
11/04/2008	US7445408 Yieldable prop having a restraint arrangement
10/2008
10/02/2008	US20080236433 Rock Drill and Method of Breaking Rock
06/2008
06/24/2008	US7390147 Yieldable prop having a yield section
06/11/2008	CN101198763A Rock drill and method of breaking rock
05/2008
05/14/2008	EP1749144B1 Rock bolting method and rock bolt
03/2008
03/12/2008	EP1896692A1 Cladding for non-flammable water and frost protection of tunnels and caverns
01/2008
01/16/2008	EP1877649A1 Construction element and method for its manufacture
12/2007
12/26/2007	EP1869287A2 Rock drill and method of breaking rock
11/2007
11/01/2007	US20070253783 Rock Bolting Method and Rock Bolt
05/2007
05/16/2007	EP1784556A1 An arrangement for affixing an expandable packer in a hole
05/02/2007	CN1957159A Rock bolting method and rock bolt
04/2007
04/18/2007	EP1774139A1 Arrangement for injecting and affixing a reinforcing or anchoring element in a rock wall
03/2007
03/15/2007	US20070059109 Yieldable Prop Having A Yield Section
02/2007
02/08/2007	US20070031197 Yieldable prop having a yield section
02/07/2007	EP1749144A1 Rock bolting method and rock bolt
12/2006
12/14/2006	WO2006132537A1 Cladding for non-flammable water and frost protection of tunnels and caverns
11/2006
11/14/2006	US7134810 Yieldable prop having a yield section
11/02/2006	WO2006115415A1 Construction element and method for its manufacture
11/02/2006	WO2006099637A3 Rock drill and method of breaking rock
09/2006
09/21/2006	WO2006099637A2 Rock drill and method of breaking rock
01/2006
01/19/2006	WO2006006928A1 Arrangement for injecting and affixing a reinforcing or anchoring element in a rock wall
01/19/2006	WO2006006927A1 An arrangement for affixing an expandable packer in a hole
01/19/2006	CA2572930A1 Arrangement for injecting and affixing a reinforcing or anchoring element in a rock wall
01/19/2006	CA2571548A1 An arrangement for affixing an expandable packer in a hole
12/2005
12/22/2005	WO2005121494A1 Device for a rock drilling machine
12/01/2005	WO2005113939A1 Rock bolting method and rock bolt
12/01/2005	CA2564291A1 Rock bolting method and rock bolt
11/2005
11/24/2005	US20050257448 Support device for a rib
11/2004
11/11/2004	US20040223815 Yieldable prop having a yield section
10/2003
10/21/2003	CA2040716C Mine shaft sinking
09/2003
09/02/2003	US6612783 Cable bolt with mixing delay device
08/2002
08/15/2002	US20020110426 Cable bolt with mixing delay device
12/2001
12/25/2001	US6332401 Method and apparatus for pressure wave suppression in small-charge blasting
11/2001
11/27/2001	US6321655 Method and apparatus for flyrock control in small charge blasting
01/2001
01/20/2001	CA2313933A1 Mine roof truss with bent angle bolts
12/2000
12/12/2000	CA2037352C Shaft conveyance system
08/2000
08/07/2000	CA2297985A1 Rock bolt
07/2000
07/26/2000	CN1261392A Surface covering material
06/2000
06/07/2000	EP1005441A2 Surface covering material
06/1999
06/29/1999	CA2177322C Anchoring cartridge for hardening multi-component composition
04/1999
04/21/1999	CN1043071C Anchoring cartridge for hardening multi-component composition
03/1999
03/25/1999	WO1998058886A3 Surface covering material
02/1999
02/08/1999	CA2244617A1 A rock bolt assembly
12/1998
12/30/1998	WO1998058886A2 Surface covering material
12/20/1998	CA2241167A1 Surface covering material
07/1998
07/28/1998	US5785462 Anchoring cartridge for hardening multi-component composition
03/1997
03/26/1997	CN1145977A Prestressing of mine props
02/1997
02/26/1997	CN1143720A Anchoring cartridge for hardening multi-component composition
12/1996
12/18/1996	EP0748779A2 Anchoring cartridge for hardenable multicomponent mass
12/07/1996	CA2178383A1 Headboard
09/1996
09/11/1996	EP0638137B1 Method for excavating tunnels, utilisation of a foaming agent and new composition
08/1996
08/16/1996	CA2142538A1 Cone for a bolt
01/1995
01/31/1995	CA2128990A1 Friction rock stabilizers
01/31/1995	CA2128989A1 Friction rock stabilizers
11/1993
11/11/1993	WO1993022538A1 Method for excavating tunnels, utilisation of a foaming agent and new composition
10/1993
10/27/1993	CN1077785A 限压阀 Pressure limiting valve
07/1992
07/07/1992	CA1304611C Reinforcing method and means
05/1992
05/09/1992	CA2055080A1 Rock bolting
09/1991
09/24/1991	US5051039 Hydraulic steel mine prop
08/1991
08/27/1991	CA1287990C Anchor bolt assembly
07/1990
07/04/1990	EP0376925A2 Rock anchor element
06/1990
06/20/1990	EP0374130A2 Rock anchoring
01/1990
01/11/1990	WO1990000217A1 Hydraulic steel mine-prop
01/10/1990	EP0349942A1 Hydraulic steel prop
08/1989
08/01/1989	CA1257976A1 Method of stabilizing a rock structure
06/1989
06/27/1989	US4842063 Anchoring method and capsule therefor
08/1988
08/17/1988	EP0278172A1 Anchoring
07/1988
07/21/1988	DE3700785A1 Macerate, process for its preparation and its use as medicine
02/1988
02/09/1988	CA1232463A1 Method for producing hollow structures and hollow structures
09/1987
09/29/1987	US4696606 Method of stabilizing a rock structure
09/15/1987	US4693635 Method of producing hollow structures and hollow structures
12/1986
12/30/1986	EP0207030A1 Method of stabilizing a rock structure
09/1985
09/03/1985	CA1192754A1 Method for rock bolting by using a stranded cable and equipment for carrying out rock bolting
06/1983
06/15/1983	EP0081402A1 Process for obtaining hollow structures such as ducts, grain tanks or shelters.
05/1983
05/26/1983	WO1983001823A1 Method for obtaining hollow structures, such as conduits, silos or shelters and structures obtained by such method
04/1980
04/08/1980	US4196933 Safety wall cutting through method employed in long wall mining