| Patents for E21D 7 - Shaft equipment, e.g. timbering within the shaft (218) |
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| 09/28/2011 | CN201991534U 矿山用双层罐笼人员同步出入蹬梯 Mine personnel sync with double cage kicking out the ladder |
| 09/14/2011 | CN201972710U 加强型矿井管路伸缩器 Enhanced mine pipeline expansion joints |
| 08/31/2011 | CN102167252A Rigid guide rail of mine elevator and arrangement structure thereof |
| 08/24/2011 | CN201943704U 井筒装备安装施工平台 Shaft equipment installation and construction platform |
| 08/03/2011 | CN102144073A External water delivery system for rock drills |
| 07/21/2011 | WO2011085431A1 Improved ladderway system for underground raises |
| 07/21/2011 | CA2786624A1 Improved ladderway system for underground raises |
| 07/13/2011 | CN201896618U Closed anticorrosion pultrusion type GRP (Glass Reinforced Plastic) assembling device |
| 07/06/2011 | EP2245256B1 Method and device for creating a deep borehole |
| 07/06/2011 | CN101749039B Deep well drilling waterpower deslagging device of floor anchor rod hole of tunnel |
| 06/29/2011 | CN102108870A Shaft equipment mounting construction platform |
| 06/08/2011 | EP2329093A1 External water delivery system for rock drills |
| 06/08/2011 | CN201857972U Novel fiber-reinforced plastic ladder compartment component |
| 05/10/2011 | CA2612559C Shaft plugging system |
| 04/27/2011 | EP2313613A2 Method for erecting an underground construction |
| 04/21/2011 | WO2010127751A3 Method for erecting an underground construction |
| 04/13/2011 | CN201794616U High-lift submersible pump vertical shaft suspension device |
| 03/30/2011 | CN101993002A Automatic lift type shaft hanging stage |
| 02/16/2011 | CN201747378U Mine shaft equipment |
| 01/26/2011 | CN201723251U Vertical shaft water intercepting and guiding device |
| 01/06/2011 | WO2011000038A1 Underground mining |
| 01/06/2011 | CA2765714A1 Underground mining |
| 12/22/2010 | CN201679501U Waste rock flipping device of vertical shaft |
| 12/21/2010 | US7854571 Systems and methods for handling piles |
| 11/03/2010 | EP2245256A2 Method and device for creating a deep borehole |
| 10/20/2010 | CN101864990A Water intercepting and conducting device for shaft of vertical well |
| 08/11/2010 | CN201546732U Automatic safety door of vertical shaft mouth |
| 08/11/2010 | CN201546731U Ultra-large diameter deep shaft engineering construction supporting device |
| 06/23/2010 | CN101749039A Deep well drilling waterpower deslagging device of floor anchor rod hole of tunnel |
| 06/16/2010 | CN201507312U Device for tensioning steel-rope guide |
| 06/09/2010 | CN201502379U Multi-lifting shaft |
| 05/19/2010 | CN201473159U Self-controlled lifting type suspension sinking platform for vertical shaft |
| 05/12/2010 | CN101705824A Integral line stabilizing technique for vertical pit construction |
| 05/05/2010 | CN201448112U Fiberglass grid of ladder compartment |
| 04/14/2010 | CN101694161A Construction process of large horsehead on unstable stratum layer |
| 03/31/2010 | CN201433770Y Elbow bearing support of water discharging pipe with large pipe diameter of deep shaft |
| 03/11/2010 | WO2010027526A1 External water delivery system for rock drills |
| 12/17/2009 | US20090308326 High-Pressure Device And Method For The Production And Operation Thereof |
| 09/23/2009 | CN201314235Y Hanging scaffold stabilizing device |
| 05/27/2009 | CN201246166Y Anti-corrosive pulling and squeezing type glass fiber reinforced plastic lattice-shaped assembling apparatus |
| 05/13/2009 | EP2057349A1 High-pressure device and method for the production and operation thereof |
| 05/13/2009 | EP2057330A1 Deep sea aquarium and corresponding operation method |
| 04/02/2009 | WO2009039928A1 Aquarium |
| 02/12/2009 | WO2008025536A8 High-pressure device and method for the production and operation thereof |
| 10/08/2008 | CN201129176Y Mine pipeline telescoping device |
| 08/21/2008 | US20080196885 Shaft Plugging System |
| 08/20/2008 | CN100412316C Steel-rope guide hydraulic stretching device |
| 03/06/2008 | WO2008025536A1 High-pressure device and method for the production and operation thereof |
| 02/27/2008 | CN201027541Y Security door for mine silo |
| 02/21/2008 | DE102006026766B4 Vorrichtung zur Aufnahme von selbsttragenden Baustoffschichten in Schächten Apparatus for recording self-supporting material layers in shafts |
| 02/20/2008 | CN201025037Y Automatic well door of secure drop-preventive vertical well |
| 12/20/2007 | DE102006026766A1 Assembly to hold self-supporting layers at hollow shaft walls is a spreader, with swing struts and swivel rods, linked to a cylinder on the central rod to bear against the shaft walls |
| 03/07/2007 | CN2876331Y Device for coal mine gas extraction |
| 01/04/2007 | WO2007000009A1 Shaft plugging system |
| 08/16/2006 | CN2806765Y Downhole gas exhausting pipe for coal mine |
| 06/08/2006 | WO2006058380A1 A ladderway system for underground raises |
| 06/08/2006 | CA2589706A1 A ladderway system for underground raises |
| 05/24/2006 | CN2782930Y Welding seam joint device for compressible structure of curve arc board well wall |
| 03/16/2006 | US20060054356 Working platform |
| 10/05/2005 | CN1676878A Mining intelligent gas control system |
| 04/06/2005 | CN2690551Y Ladder room |
| 03/09/2005 | CN2683614Y Composite cage way |
| 01/26/2005 | CN1570352A Steel-rope guide hydraulic stretching device |
| 07/28/2004 | CN2628728Y Steel wire rope cage guide hydraulic tensioning apparatus |
| 03/03/2004 | CN2605230Y Guide-bar roller cage-ear |
| 02/18/2004 | CN2603850Y Shaft borehole cage conductor |
| 09/25/2003 | WO2003078795A1 Working platform |
| 07/11/2002 | WO2001053658A8 Method and devices for preventing rock bursts, especially for use in underground works |
| 04/18/2002 | DE10047063A1 Nominal fracture point in a shaft wall, for the movement of a tunneling machine to and from the tunneling site, has a prefabricated component in the shaft wall with the reinforcement which can be penetrated by the machine |
| 07/26/2001 | WO2001053658A2 Method and devices for preventing rock bursts, especially for use in underground works |
| 11/23/2000 | DE19921363A1 Support unit for use in a shaft or hollow vertical chamber, comprises flexible sleeve and spreading unit which can open the sleeve out |
| 03/08/2000 | CN2367768Y Curved arc plate type apparatus for making well-wall contractable |
| 06/09/1999 | CN1218869A Simple tower well for country side |
| 06/30/1998 | CA2156566C Method and apparatus for developing shafts using small diameter shafts |
| 02/11/1998 | CN2274255Y Wellhole scale-cutting-out machine |
| 04/23/1997 | CN2252885Y Combined gliding plate |
| 01/08/1997 | CN2244614Y Cantilever for support of making galleries |
| 05/07/1996 | US5513903 Method and apparatus for developing shafts using small diameter shafts |
| 09/06/1995 | CN2206838Y Round pipe type multipurpose vertical pit shaft cage guide |
| 11/30/1994 | CN2184084Y Shaft device for pothole |
| 06/17/1993 | DE4239338A1 Layered capacitor element winder with pivotable pressure roller - takes up two superimposed layers of raw material on plate rotating in contact with sliding roller |
| 12/01/1992 | CA2043628A1 Mine shaft guide changer |
| 01/30/1992 | DE4034736C1 Junction pipe in mine shaft - incorporates cross-block with square outlet |
| 07/11/1991 | DE3942828C1 Tension-free track slat mounting in settling mine shafts - has bracket on support, braced by foot plate with gap covering support plate |
| 03/27/1991 | CN2073934U Linkage system for safety gate of auxiliary well head and cage gate |
| 12/19/1990 | EP0403039A1 Arrangement for reliably catching a pipeline freely suspended in a mine shaft |
| 04/19/1990 | DE3902845C1 Method and device for exchanging a pipe in a freely suspended pipeline |
| 04/19/1990 | DE3835690A1 Device for positioning a main pipeline hanging in a shaft |
| 10/05/1989 | DE3822768C1 Method and apparatus for carrying the weight of a vertically arranged pipeline |
| 05/18/1989 | DE3835709C1 Use of a winding-rope system for the installation of a pipeline |
| 03/28/1989 | CA1251805A1 Mobile service rig |
| 12/28/1988 | CA1247383A Mineshaft closures |
| 12/06/1988 | CA1245851A1 Shaft guide alignment measurement |
| 09/07/1988 | CN87100712A Glass epoxy palisade for lift room of vertical shaft |
| 05/18/1988 | CN87207603U Composite cage guide |
| 12/23/1987 | DE3620453A1 Kit for installing and/or adjusting vertical rails of considerable length |
| 12/12/1987 | CN86207605U Mechanical assembly at portal |
| 10/29/1987 | DE3614197A1 Guide rail for shafts |
| 10/21/1987 | CN87202165U Glass fiber reinforced plastics fence for ladder compartment of shaft |
| 09/24/1987 | DE3608822A1 Guide arrangement for blind shafts |