| Patents for E21D 1 - Sinking shafts (447) |
|---|
| 07/14/2010 | CN201526323U Mine hydraulic rock grab |
| 06/30/2010 | CN201517565U Shaft-connecting device of grab loader |
| 06/23/2010 | CN101749028A Cross-pulling construction method for soft soil zone with high ground water level |
| 06/16/2010 | CN101737057A Method for constructing subway station air shaft for soft soil strata |
| 06/16/2010 | CN101737054A Novel method for drilling well |
| 06/16/2010 | CN101737013A Sinking headframe double-layer sheave wheel platform system |
| 06/02/2010 | CN201496070U Construction equipment of refuse filler gas-gathering well of refuse landfill site |
| 05/12/2010 | CN201460749U Headsheave platform device for sinking headframe |
| 05/12/2010 | CN1932242B Well wall with steel plate aquifuge and construction method thereof |
| 04/20/2010 | US7699123 Bore hole sleeve reaming apparatus and method |
| 04/20/2010 | CA2543511C Earth boring apparatus for sinking shafts and method of excavating a shaft |
| 04/14/2010 | CN101694160A Rapid construction process for sinking vertical shaft pit shaft with large diameter on deep surface soil layer by utilizing freezing method |
| 04/14/2010 | CN101694159A Technology for rapidly constructing air shaft under chill condition and process for sinking vertical shaft pit shaft |
| 04/14/2010 | CN101694158A Rapid constructing method for enabling vertical shaft pit shaft to pass through magmatic rock with large thickness |
| 03/31/2010 | CN101684653A Dry method pit sinking construction technique |
| 03/23/2010 | US7682107 Remote mine seal spray nozzle assembly, system and methods of use |
| 03/04/2010 | WO2010023650A1 Method and arrangement for detection and destruction of tunnels |
| 03/03/2010 | CN101660416A Method for performing freezing-method well drilling by building permanent derrick foundation in frozen circle |
| 03/03/2010 | CN101660415A Technology for constructing and stopping leakage of freezing borehole |
| 02/04/2010 | WO2010012290A1 Method for introducing a vertical shaft and shaft driving machine |
| 02/04/2010 | CA2731400A1 Method for introducing a vertical shaft and shaft driving machine |
| 01/28/2010 | WO2009137848A3 A well and a method of constructing a well |
| 01/21/2010 | WO2010007305A2 Method for constructing an underground tunnel or hole to create an impervious plug for the storage of hazardous, particularly radioactive, waste |
| 01/21/2010 | DE102008028997A1 Drilling method for producing borehole in e.g. earth in residential area, involves converting electric and/or hydraulic energy into mechanical energy in borehole for propulsion and driving of drilling tool |
| 12/09/2009 | CN101598022A Method for once-tunneling construction of vertical shaft |
| 11/19/2009 | WO2009137848A2 A well and a method of constructing a well |
| 11/17/2009 | US7617888 Pilot tube system and attachment mechanism for auger boring machine |
| 10/07/2009 | CN201321860Y Sealing device for hobbing cutter |
| 09/30/2009 | CN100545418C Fast grout injection system between composite well wall |
| 07/22/2009 | CN201277042Y Shaft-well digger |
| 07/01/2009 | CN100507209C Controlled deformation method for double-layer structure circular tunnel |
| 06/10/2009 | CN101451436A Full hydraulic grab |
| 04/29/2009 | CN201228552Y Shaft excavation machine |
| 04/16/2009 | US20090097930 Reaming apparatus |
| 03/25/2009 | CN101392650A Sublevelling raise method |
| 12/31/2008 | CN201173118Y Thermal insulating wind pipe |
| 12/16/2008 | CA2447393C Method and apparatus for artificial ground freezing |
| 12/10/2008 | CN201162535Y Pipe pulling machine |
| 11/19/2008 | CN101307693A Shaft excavation machine |
| 11/05/2008 | CN201144703Y Slurry pumping type shaft sinking device |
| 09/24/2008 | CN101270665A Automatic tank-throwing device for vertical shaft construction |
| 09/11/2008 | US20080217061 Pilot tube system and attachment mechanism for auger boring machine |
| 08/21/2008 | US20080196885 Shaft Plugging System |
| 08/20/2008 | CN100412315C Method for preventing well wall from crack by dynamic earth layer reinjecting water |
| 06/24/2008 | US7389829 Method and apparatus for forming bored hole |
| 04/17/2008 | DE102004017648B4 Verfahren zum Bau von Tunneln unter dem Meeresgrund A method for the construction of tunnels under the seabed |
| 04/10/2008 | DE102006048823A1 Tunnelbohrmaschine sowie Anordnung einer Tunnelbohrmaschine mit einem Transportsystem TBM and arrangement of a tunnel boring machine with a transport system |
| 03/20/2008 | WO2008033504A2 Protective coatings for drill pipe and associated methods |
| 01/31/2008 | US20080023226 Bore hole reaming apparatus and method |
| 01/16/2008 | CN101105130A Fast slip casting technique between composite well wall |
| 12/11/2007 | US7306049 Mode change switch for power tool |
| 11/13/2007 | US7293615 Earth boring system |
| 08/15/2007 | CN2934572Y Shrinkable well wall joint for freezing well |
| 07/12/2007 | US20070158111 Method and apparatus for directional drilling |
| 07/11/2007 | CN2921278Y Shaft sinking inter lining multipoint fast slip casting device by freezing method |
| 07/04/2007 | CN2918733Y Special pipe for measuring ultra deep surface soil frost heave pressure |
| 06/28/2007 | DE102005062819A1 Shaft lining for landfill refuse site has air-placed concrete shells alternating with geo-textile rings |
| 06/06/2007 | CN1320255C Axial telescoping well wall |
| 04/19/2007 | US20070084637 Methods and Apparatus for Expanding Tubular Members |
| 03/21/2007 | CN1932242A Well wall with steel plate aquifuge and construction method thereof |
| 03/15/2007 | US20070056772 Autoreaming systems and methods |
| 02/21/2007 | CN1916361A Yielding adaptor of well wall in frozen well, and construction method |
| 01/04/2007 | WO2007000009A1 Shaft plugging system |
| 11/08/2006 | CN2835558Y Pressure-resistant easy-to-open locking air door for mine |
| 10/31/2006 | US7128168 Reamer apparatus for ground boring machine |
| 10/31/2006 | CA2305923C Shaft sinking method |
| 10/11/2006 | CN2825949Y Non-pressure air door with viewing window for mining |
| 08/16/2006 | CN2806764Y Air throttle interlocking device |
| 08/02/2006 | CN1811130A Controlled deformation method for double-layer structure circular tunnel |
| 07/20/2006 | DE102005001422A1 Sinking pits or wells involves filling concrete in shell, compressing, removing soil to let concrete lower, introducing/compressing more concrete, removing more soil to let concrete, repeating until shaft at required depth, removing shell |
| 06/29/2006 | WO2006067248A1 Pit excavation method and device |
| 06/20/2006 | US7063657 Method of constructing underground gallery by using pneumatic transfer system and stratum disposal method |
| 06/06/2006 | US7056065 Device and method for changing lines |
| 05/25/2006 | US20060108149 Method and apparatus for forming bored hole |
| 05/24/2006 | DE102005013017A1 Floating shaft lining safety device, has tube segments inserted into shaft, and outlet connection provided at base of pipe installation, where connection includes flat contact for filling of annular space |
| 05/17/2006 | CN2780991Y MIne expolosion-proof automatic sliding air door |
| 03/23/2006 | US20060060383 Method and device for drilling a channel |
| 02/09/2006 | DE10101708B4 Verfahren zum Felsmeißeln A method for rock chisels |
| 02/08/2006 | CN1730905A Tunneling synchronous lining method and lining trolley for applying the method |
| 01/12/2006 | US20060006001 Percussive reamer and method of use thereof |
| 11/30/2005 | CN2743543Y Driving device of main shaft blower valve for mining use |
| 09/01/2005 | US20050189105 Earth boring system |
| 07/27/2005 | CN1644877A Method for preventing well wall from crack by dynamic earth layer reinjecting water |
| 07/20/2005 | EP1555388A1 Method for removing soils |
| 06/29/2005 | EP1548228A1 Method of forming an underground bore and apparatus for carrying out the same |
| 06/09/2005 | WO2005052318A1 Method of sinking and lining a shaft |
| 06/02/2005 | WO2005049966A1 Earth boring apparatus for sinking shafts and method of excavating a shaft |
| 04/07/2005 | DE102004017648A1 Method for submarine tunneling involves constructing vertical access duct by stacking interlocking ring sections and removing spoil to lower the bottom of the duct to the tunnel line |
| 03/02/2005 | CN2682208Y Moving wind screen rope hole apparatus for coal mine inclined well mouth |
| 01/06/2005 | US20050004416 Building subterranean tunnels for handling hazardous wastes; covering |
| 12/09/2004 | DE10324637B3 Process for sinking and stabilizing a shaft in a waste dump comprises forming a reinforced shaft collar close to a dump cover and lining, sinking a lower shaft section, straightening the wall of the section, and lining with gunned concrete |
| 12/01/2004 | CN2660125Y Mine rubber air inducing tube cloth without powder isolation |
| 09/30/2004 | DE10310726B3 Core drilling arrangement with flushing has container for bore flushing with core material released from tube arranged in upper region of core drilling tube into which pump feeds, overflow openings |
| 09/28/2004 | US6796139 Method and apparatus for artificial ground freezing |
| 09/02/2004 | US20040168460 Method and apparatus for artificial ground freezing |
| 09/01/2004 | CN1525043A Cycle type vertical shaft drilling and digging equipment and construction method thereof |
| 08/04/2004 | EP1443177A1 Method of constructing underground gallery by using pneumatic transfer system, and stratum disposal method |
| 07/29/2004 | DE102004003809A1 Mobile Vortriebsmaschinen Mobile Boring Machines |
| 07/21/2004 | CN1514108A Axial telescoping well wall |
| 03/24/2004 | CN1483902A Method of distributing freezers for speeding up freezing soil and rock in local area |