| Patents for 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) |
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| 04/27/2011 | CN201810325U Solid filling end bracket |
| 04/27/2011 | CN102037215A Shield cap for a shield-type mining support |
| 04/27/2011 | CN102037214A Shield support assembly for underground mining and supporting surface element therefor |
| 04/27/2011 | CN102031986A Method for controlling advancing mechanism |
| 04/27/2011 | CN102031985A Walking support |
| 04/27/2011 | CN101285393B Low coal seam support device |
| 04/27/2011 | CN101245708B Magnetic rheologic pilot-operated reversing valve for hydraulic support |
| 04/20/2011 | CN201802434U Mining hydraulic support capable of adjusting underground conveying height |
| 04/20/2011 | CN201802433U Hydraulic support integrating paste filling and support |
| 04/20/2011 | CN201802432U Front support of paste-filling and supporting integrated hydraulic support |
| 04/20/2011 | CN102022131A Strut type self advancing hydraulic support |
| 04/20/2011 | CN102022130A Stepping self-walking cantilever timbering of fully mechanized workface |
| 04/20/2011 | CN102022122A Support-type comprehensive tunneler |
| 04/20/2011 | CN101392656B Hydraulic support electrohydraulic control system and ad hoc network method thereof |
| 04/13/2011 | CN201794610U Drilling, loading, anchoring, supporting and transporting integrated machine in high outburst mine coal drift |
| 04/13/2011 | CN201794609U Drilling, loading and supporting all-in-one machine for coal roadway of high outburst coal mine |
| 04/13/2011 | CN201794601U Direction-adjustable suspension top beam hydraulic support |
| 04/13/2011 | CN201794600U Quick supporting device for tunnel excavation |
| 04/13/2011 | CN1975110B Arrangement for the admission of pressurized water to spray systems |
| 04/13/2011 | CN102016973A Screen |
| 04/13/2011 | CN102011603A Coal mine underground remote control triangle protective shield |
| 04/07/2011 | WO2011039693A2 Advancing assembly and powered shield support herewith |
| 04/07/2011 | DE102009048154A1 Method for controlling advancing mechanism in underground long wall, involves determining distance between conveyor and frames by sensor for controlling cylinder, where sensor is in form of ultrasonic sensor and attached at frames |
| 04/06/2011 | EP2304180A2 Shield support assembly for underground mining and supporting surface element therefor |
| 04/06/2011 | CN201786378U Spray dust-fall device for hydraulic support |
| 04/06/2011 | CN201786373U Pushing device for hydraulic face support |
| 04/06/2011 | CN102004483A Fully-mechanized mining digital manless working face control system |
| 04/06/2011 | CN102003198A Hydraulic support without tail beam |
| 04/06/2011 | CN102003197A Flexible support |
| 04/06/2011 | CN102003196A Integrated hydraulic support for mining and filling |
| 04/06/2011 | CN102003192A Connecting locating device |
| 03/30/2011 | CN201778833U Self-adjusting side protection plate of hydraulic bracket |
| 03/30/2011 | CN101994518A Intrinsic safety type bracket controller |
| 03/30/2011 | CN101994517A Large-stroke overall top beam suspension support |
| 03/30/2011 | CN101586460B Coal mining solid filling method |
| 03/24/2011 | DE102009042120A1 Valve arrangement for driving powered cylinder of stope supporting structure in underground mines, has damping valve provided between pressure connection and cylinder connection, and comprising throttle |
| 03/23/2011 | CN201771531U Push rod adjusting jack for inclined and steeply inclined fully mechanized mining hydraulic bracket |
| 03/23/2011 | CN201771530U Coal mining support suitable for filling gangue |
| 03/23/2011 | CN201771529U Traversing support for tunneling |
| 03/23/2011 | CN201771528U Coal mine fully mechanized working face flying recrement resisting wall supporting device |
| 03/23/2011 | CN201771520U Remote monitoring high-pressure water injection system |
| 03/23/2011 | CN101988389A Filling and supporting hydraulic support with compaction mechanism |
| 03/23/2011 | CN101988388A Filling and supporting hydraulic support with compaction mechanism |
| 03/17/2011 | DE10163691B4 Hubeinrichtung Lifting device |
| 03/16/2011 | CN201763369U Hydraulic support automatic spraying dust suppression system |
| 03/16/2011 | CN201763366U Insert-type connecting rod hydraulic support |
| 03/16/2011 | CN101985887A End supporting, filling and transshipping system of coal face |
| 03/16/2011 | CN101526007B Underground coal bunker cleaning robot |
| 03/10/2011 | DE102006053629B4 Filterstation Filter station |
| 03/09/2011 | CN201756975U Large inclined-angle working plane transverse four connection-rod leading bracket |
| 03/03/2011 | US20110049965 Apparatus and method for mining coal |
| 03/03/2011 | US20110049964 Method for Controlling Longwall Mining Operations |
| 03/02/2011 | CN201753608U Oil cylinder in mine excavating and fully mechanized support |
| 02/24/2011 | WO2011020484A1 Method for producing a face opening using automation systems |
| 02/16/2011 | CN201747394U Double-acting plunger-type top-cutting column |
| 02/16/2011 | CN201747393U Plunger type topping column |
| 02/16/2011 | CN201747392U Combined top beam slipping hydraulic support system used in coal mine |
| 02/16/2011 | CN201747391U Two-stage lateral protection transition bracket of large mining height working surface |
| 02/16/2011 | CN201747390U Suspension type multifunctional tunnel operation machine |
| 02/16/2011 | CN101975077A High-outburst coal mine coal roadway drilling-loading-bolting integrated machine |
| 02/16/2011 | CN101975072A Recovery method of common combined mining working face hydraulic support |
| 02/09/2011 | CN201738941U Fully-mechanized mining working surface end suspension bracket |
| 02/09/2011 | CN201738940U Automatic centering floating top beam hydraulic support |
| 02/09/2011 | CN201738939U Coal removing device of crawler working hydraulic support |
| 02/09/2011 | CN201738926U Fully mechanized supporting equipment for thin seam |
| 02/09/2011 | CN1721656B Single controlling apparatus for shielding bracket |
| 02/09/2011 | CN101970797A An apparatus for forming an underground tunnel |
| 02/09/2011 | CN101970796A Method for automatically creating a defined face opening in plow operations in coal mining |
| 02/09/2011 | CN101970795A Method for controlling longwall mining operations |
| 02/09/2011 | CN101967990A Hydraulic support with excavating function |
| 02/09/2011 | CN101967975A Fully-mechanized caving mining process technology with large mining height in super-high seam (14-20m) |
| 02/08/2011 | US7883298 Supporting device for an advance working or mining machine |
| 02/02/2011 | CN201730634U Hydraulic bracket |
| 02/02/2011 | CN201730633U Sliding beam hinged sliding hydraulic support |
| 02/02/2011 | CN101963063A Method for monitoring a push jack |
| 01/27/2011 | DE102009034216A1 Method for monitoring stride cylinder of safety shield for underground mining, involves detecting measurement of accelerating values by detector during movement of stride cylinder, and determining position of stride cylinder from values |
| 01/26/2011 | CN201723235U Inclined hydraulic fore support |
| 01/26/2011 | CN101956562A Self-advancing gate road advance support bracket |
| 01/20/2011 | WO2011006461A2 Hydraulic circuit for longwall mining |
| 01/19/2011 | CN201714416U Full-mechanized hydraulic support floating type bottom lifting device |
| 01/19/2011 | CN201714415U Hydraulic support with foldable type connecting rod |
| 01/19/2011 | CN201714414U Quick supporting device for preventing roofs from falling in stope |
| 01/19/2011 | CN201714413U Suspended support connecting device and suspended support |
| 01/19/2011 | CN201714412U Hydraulic support for non-solid-filled working face |
| 01/19/2011 | CN201714411U Solid packed hydraulic support for working face |
| 01/19/2011 | CN201714410U Side protection device for detachable hydraulic support base |
| 01/19/2011 | CN201714409U Locking device for lateral guard plate of hydraulic support |
| 01/19/2011 | CN201714405U Cylinder with inner hole having corrosiveness resistance |
| 01/19/2011 | CN101952548A Method for the controlled maintaining of a distance between the roof and the face in longwall mining operations |
| 01/19/2011 | CN101952547A Method for automatically creating a defined face opening in longwall coal mining operations |
| 01/13/2011 | WO2011004296A2 Gob shield for shield support and method for the production thereof |
| 01/13/2011 | US20110006584 Method for Automatically Producing a Defined Face Opening in Plow Operations in Coal Mining |
| 01/13/2011 | DE102009026135A1 Bruchschild für Schildausbau und Verfahren zu dessen Fertigung Fracture plate for roof supports and process for its production |
| 01/12/2011 | CN201705378U Pushing frame for hydraulic support |
| 01/12/2011 | CN201705377U Adjustable mechanism for lifting hydraulic support from bottom |
| 01/12/2011 | CN201705376U Special hydraulic support for underground coal mine filling and production |
| 01/12/2011 | CN201705375U Four-column chock-shield large-mining-height mesh-laying hydraulic support |
| 01/12/2011 | CN201705374U Two-leg shield type mesh laying hydraulic support with large mining height |
| 01/12/2011 | CN101943016A Novel shielding full-mechanized mining hydraulic bracket for extremely thin coal bed |
| 01/12/2011 | CN101943010A Remote-monitoring high pressure water injection system |