| Patents for E21D 15 - Props; Chocks (3,432) |
|---|
| 09/15/2010 | CN201581909U Plug-in hydraulic control check valve |
| 09/15/2010 | CN201581908U Insertion component and inter-frame operation pilot-operated reversing valve with same |
| 09/15/2010 | CN201581907U Manual pilot valve with self-locking function |
| 09/15/2010 | CN201581906U Self-switching and self-disassembling type U-shaped steel support |
| 09/15/2010 | CN101832145A Connecting device |
| 09/15/2010 | CN101832144A Narrow comprehensive mining hydraulic bracket |
| 09/15/2010 | CN101832137A Pre-embedding method for coal seam roof strut |
| 09/08/2010 | CN201574765U Secondary unloading hydraulic control one-way valve |
| 09/08/2010 | CN201574764U Shielding-type lapping hydraulic support with two pillars |
| 09/07/2010 | US7789593 Grout pack restraining system |
| 09/01/2010 | CN201568391U Electro-hydraulic pilot valve control circuit |
| 09/01/2010 | CN201568250U Novel emulsion pump station for coal mine |
| 09/01/2010 | CN201568068U Reversing valve for support |
| 09/01/2010 | CN201568065U Sequence valve for hydraulic support |
| 09/01/2010 | CN201568064U Pressurizer for upright of hydraulic support |
| 09/01/2010 | CN201568063U Hydraulic control three-way valve for studs or jacks |
| 09/01/2010 | CN201568062U Novel double-telescopic-single-body hydraulic prop |
| 09/01/2010 | CN201568061U Bidirectional strut or stand column for support |
| 08/25/2010 | CN201560773U Integrated sealed single hydraulic prop |
| 08/25/2010 | CN201560772U Sliding plate type composite suspension hydraulic support |
| 08/25/2010 | CN101812998A Hydraulic support frame for mine tunnel construction machinery |
| 08/25/2010 | CN101812997A Simple hydraulic support |
| 08/25/2010 | CN101403310B Corrosion-resistant single-body hydraulic supporter and its processing method |
| 08/18/2010 | CN201554477U Novel individual hydraulic prop |
| 08/18/2010 | CN201554476U External-liquid-injection-type mining monomer hydraulic prop |
| 08/18/2010 | CN201554475U Novel pillar for thin coal seam working face |
| 08/18/2010 | CN201554474U Mining hydraulic single strut anti-collapse chain |
| 08/18/2010 | CN201554473U Supporting device for coal mine tunnel cross breaking layer |
| 08/18/2010 | CN201554472U Compound material supporting column for coal mine |
| 08/18/2010 | CN101806229A Mine roof safety evaluation method based on multi-target monitoring data fusion |
| 08/18/2010 | CN101806222A New vent valve of mining single hydraulic prop |
| 08/17/2010 | US7775748 Shield support |
| 08/11/2010 | CN201546742U Locking device of operating valve |
| 08/11/2010 | CN201546741U Outer prop type single hydraulic prop |
| 08/11/2010 | CN201546740U Lifting prop for tunnel drilling rig |
| 08/11/2010 | CN201546739U Comprehensive mechanized coal mining hydraulic support of low coal containing iron sulfide concretion and hard stone band |
| 08/11/2010 | CN101372891B Strip filling integral backstopping coal mining method |
| 08/11/2010 | CN101302935B Crabbing type end head hydraulic support |
| 08/04/2010 | CN201539268U Hydraulic control three-purpose valve |
| 08/04/2010 | CN201539267U Mining single hydraulic prop |
| 08/04/2010 | CN1550639B Apparatus for lifting cylinder |
| 08/04/2010 | CN101793156A Manual boosting setting-force guaranteeing device |
| 08/04/2010 | CN101793155A Convenient and fast constant-resistance type temporary support strut |
| 08/04/2010 | CN101793152A Construction technology for soft rock large-deformation tunnel by de-stressing method and matched bracket |
| 08/04/2010 | CN101105132B Single extension suspended type hydraulic vertical prop |
| 07/28/2010 | CN201535279U 回液断路阀 Back to the liquid shutoff valve |
| 07/28/2010 | CN201535172U 一种煤矿综采工作面掩护式液压支架平衡机构保护装置 One kind of fully mechanized coal mining face shield hydraulic support balancing mechanism protection device |
| 07/28/2010 | CN201535171U 内注式单体液压支柱 Within Note Prop |
| 07/28/2010 | CN201535170U 液压支架铰接底盘 Hydraulic support hinged chassis |
| 07/28/2010 | CN1920255B Single bracket for retreating type pillar type mining during chamber-and-pillar working |
| 07/21/2010 | CN201531273U Underground roadway support leg deformation correcting device |
| 07/21/2010 | CN201531241U Eccentric withdraw-prevention plugging device of spare mounting hole |
| 07/21/2010 | CN101781994A Method for mounting mine chute lining plate |
| 07/14/2010 | CN201526329U Individual hydraulic prop |
| 07/14/2010 | CN201526328U Novel pillar |
| 07/14/2010 | CN201526327U U-shaped full-face steel support |
| 07/14/2010 | CN201526324U Combined type operation platform for defense engineering underground tunnel construction |
| 07/14/2010 | CN101775992A Method for manufacturing hydraulic support jack guide sleeve |
| 07/14/2010 | CN101775991A Method for significant reduction of bracket support of gob-side roadway of fully-mechanized mining face |
| 07/14/2010 | CN101775988A Method for constructing from inclined shaft to main tunnel in weak surrounding rock |
| 07/14/2010 | CN101775986A Process for stoping low coal seam containing ferric sulfide concretions and hard parting bands and hydraulic support thereof for fully mechanized mining |
| 07/07/2010 | CN201521309U 安全阀 Safety valve |
| 07/07/2010 | CN201521308U High flow capacity insertion type manual direction-changing valve for hydraulic supporting frame |
| 07/07/2010 | CN201521307U Hand pump type individual hydraulic prop |
| 07/07/2010 | CN201521306U Individual hydraulic prop |
| 06/30/2010 | CN201517420U External injection single hydraulic prop |
| 06/30/2010 | CN101761347A Suspended combined hydraulic beaming device |
| 06/30/2010 | CN101761338A Gob-side entry retaining method of a solid filling coal mining half-section one-leg shed |
| 06/23/2010 | CN201513186U Multifunctional hydraulic control check valve |
| 06/23/2010 | CN201513185U Double-protection single hydraulic upright post |
| 06/23/2010 | CN201513184U Single hydraulic prop capable of prevent valve from flying out |
| 06/23/2010 | CN201512385U Jack |
| 06/23/2010 | CN1550638B System composed of hydraulic assembly and actuator and/or sensor |
| 06/23/2010 | CN101749038A Automatic single prop valve disassembly device |
| 06/23/2010 | CN101749037A Self-advancing gallery temporary ahead supporting device |
| 06/23/2010 | CN101749036A Highly telescopic hydraulic support for low coal seam |
| 06/23/2010 | CN101749035A Ready-packaged arch timbering steel frame of round tunnel urgent repairing |
| 06/23/2010 | CN101749034A Shoring method for prolonging service cycle of soft rock laneway |
| 06/23/2010 | CN101749019A Method for forming artificial ore pillar and mining method |
| 06/23/2010 | CN101220748B Apparatus for positioning mine prop by increasing pressure |
| 06/23/2010 | CN101205809B Double-telescopic props totipotent leg rising system and mining hydraulic support |
| 06/16/2010 | CN201507316U Buffer valve used on hydraulic support hydraulic cylinder |
| 06/16/2010 | CN201507315U Anti-tilting device of H-shaped steel bracket of mine roadway |
| 06/16/2010 | CN201507314U Enhanced individual hydraulic prop |
| 06/16/2010 | CN101737068A Method for substituting reconstructed gangue bearing body for roadway protection coal post |
| 06/16/2010 | CN101737067A Fore-support end bracket for tunnel at double-unit face in thin seam |
| 06/10/2010 | WO2010064096A1 Mine support grout packs |
| 06/10/2010 | CA2741436A1 Mine support grout packs |
| 06/09/2010 | CN201502383U Single hydraulic prop for sliding hydraulic support |
| 06/09/2010 | CN101725368A Thick seam large mining height working face gob-side entry retaining method |
| 06/09/2010 | CN101725362A Composite support device of dynamic pressure softrock tunnel based on steel pipe concrete bracket |
| 06/03/2010 | US20100135732 Versatile grout bag type of underground support |
| 06/02/2010 | CN201496335U Automatic balancing valve |
| 06/02/2010 | CN201496218U Portable pneumatic emulsion conversion pump |
| 06/02/2010 | CN201496083U Hand-operated pilot valve |
| 06/02/2010 | CN201496082U Intelligent control device for parallel top beam hydraulic bracket electro-hydraulic servo system |
| 06/02/2010 | CN201496081U Bending-resistant single hydraulic prop with suspension-type plunger |
| 06/02/2010 | CN201496080U Single body hydraulic prop |
| 06/02/2010 | CN201496079U Mining single hydraulic prop |
| 06/02/2010 | CN201496078U Top cover injection type single hydraulic prop |