| Patents for E21D 15 - Props; Chocks (3,432) |
|---|
| 12/29/2010 | CN201687492U Folding individual stanchion |
| 12/29/2010 | CN201687491U Tail end paste filling structure of integrated hydraulic support supported and filled by paste |
| 12/29/2010 | CN201687490U Double-return spring type double telescopic monomer hydraulic prop |
| 12/29/2010 | CN201687489U Sleeve type joist of combined suspended hydraulic support |
| 12/29/2010 | CN201687488U Closed positioning clamp for collapsible U-shaped steel supports |
| 12/29/2010 | CN201687487U Contractible closed-type butt jointed clamp cable for U-shaped steel rack |
| 12/29/2010 | CN101929346A Hydraulic bracket assembling and disassembling machine with supporting upright column |
| 12/29/2010 | CN101929345A Large-section underground cave reducing-span pier structure and use method thereof |
| 12/23/2010 | WO2010125500A3 Pressure relief valve |
| 12/22/2010 | CN201679509U Collapse preventing device for mechanized mining face hydraulic support |
| 12/22/2010 | CN201679508U Suspension type multi-telescopic hydraulic strut |
| 12/22/2010 | CN201679507U Suspension single hydraulic prop with protection |
| 12/22/2010 | CN101922292A Coal mine gob-side entry retaining roadside segment bearing unequal strength support principle and application |
| 12/22/2010 | CN101532388B Comprehensive mining hydraulic support mounting transport vehicle |
| 12/15/2010 | CN201671900U Electromagnetic unloading valve of emulsion pump station |
| 12/15/2010 | CN201671804U Automatic variable high-pressure emulsion pump for coal mine |
| 12/15/2010 | CN201671649U 液压支架 Hydraulic support |
| 12/15/2010 | CN201671646U Fully-mechanized mining hydraulic support back withdrawing apparatus |
| 12/15/2010 | CN201671645U Withdrawing sling cart of fully-mechanized mining hydraulic bracket |
| 12/15/2010 | CN201671644U Split hydraulic rod high temperature protection sleeve |
| 12/15/2010 | CN201671643U Advance support hydraulic bracket body for coal fully-mechanized mining working surface |
| 12/15/2010 | CN201671642U Hydraulic rack body for supporting coal mine fully mechanized mining working face end |
| 12/15/2010 | CN201671641U Hydraulic single column extruded and coated with abrasion, corrosion and impact resistant polyurea layer |
| 12/15/2010 | CN201671640U Hydraulic support frame with sealed needling |
| 12/15/2010 | CN101339089B Single bottom prop liquid-discharging reclaiming and utilization device |
| 12/08/2010 | CN201666161U Mechanical type mining tunnel timbering machine |
| 12/08/2010 | CN201666160U Standing column used for dual-telescopic plunger hydraulic bracket |
| 12/08/2010 | CN201665501U Lifting device used during dismantling fully mechanized mining bracket |
| 12/08/2010 | CN101907887A Mineral hydraulic bracket controller, bracket control system and communication method |
| 12/08/2010 | CN101906982A Two-stage side guard transition bracket for large height mining face |
| 12/08/2010 | CN101906979A Gob-side road retaining supporting method and road-injecting slip mould |
| 12/01/2010 | CN201661301U U-shaped steel bracket for controlling expansion of buffering cushion block filled in large-deformation soft rock tunnel |
| 12/01/2010 | CN201661300U Filling timbering partition board support |
| 12/01/2010 | CN101899987A Coal mine roadway deep support construction method |
| 12/01/2010 | CN101899986A Hydraulic control one-way valve |
| 12/01/2010 | CN101899985A Hydraulic support |
| 12/01/2010 | CN101418693B Hydraulic support foundation bulkhead and the hydraulic support |
| 12/01/2010 | CN101275467B High pressure rising pole control valve and high pressure original supporting system with high-pressure pump |
| 11/30/2010 | US7841805 Engineered composite wooden crib for use as a mine support |
| 11/24/2010 | CN201650317U Hydraulic mine roadway timbering machine |
| 11/24/2010 | CN201650316U Single hydraulic prop |
| 11/24/2010 | CN201650315U Stepped-hole large-magnification-ratio upright column for hydraulic bracket |
| 11/24/2010 | CN201650314U Telescopic upright |
| 11/24/2010 | CN201650313U Single hydraulic prop |
| 11/24/2010 | CN201650312U Novel hydraulic monomer strut rod |
| 11/24/2010 | CN201650311U Alley way advanced support end bracket for low coal seam opposite drawing working surface |
| 11/24/2010 | CN101892860A Method for entry retaining for walling at sides of road in steel cylinder support mode |
| 11/24/2010 | CN101892850A Novel hydraulic single prop |
| 11/24/2010 | CN101289939B Integrated suspension device for retaining a lane for next sublevel |
| 11/18/2010 | WO2010130005A1 Length adjustable member |
| 11/18/2010 | US20100288523 Component management system |
| 11/17/2010 | CN201635748U Structure of column cap of hydraulic bracket |
| 11/17/2010 | CN201635747U Advancing jack trunnion positioning device |
| 11/17/2010 | CN201635746U Piston-type total-stroke mining single hydraulic supporting column |
| 11/10/2010 | CN201627594U Column shoe |
| 11/10/2010 | CN201627593U Upright column protective sleeve of hydraulic support |
| 11/10/2010 | CN201627592U Hydraulic supporting frame |
| 11/10/2010 | CN201627591U Pillar with fine-adjustment device |
| 11/10/2010 | CN101881174A Mining single hydraulic prop manufactured by using welded steel pipes |
| 11/04/2010 | WO2010125500A2 Pressure relief valve |
| 11/03/2010 | CN201620897U Manually pressure-charged setting load guarantee device |
| 11/03/2010 | CN201620896U Laneway U-shaped steel support protection equipment |
| 10/27/2010 | CN201614941U 单体支柱自动卸阀装置 Prop automatic unloading valve device |
| 10/27/2010 | CN201614940U 带有测试装置的液压支架 Hydraulic support with the test device |
| 10/27/2010 | CN101519972B One-way sequence valve and bracket hydraulic sequence control system using same |
| 10/27/2010 | CN101413393B Gob-side entry retaining side support method of coal bed fully mechanized caving face |
| 10/27/2010 | CN101344007B Hydraulic system for supplying work medium with different filter fineness to different elements of hydraulic support |
| 10/20/2010 | CN201610757U 一种柱帽 A POST cap |
| 10/20/2010 | CN201610756U 交替阀以及具有该交替阀的本邻架操作先导换向阀 The neighborhood has a valve and alternately operating the pilot of the aircraft alternating valve valve |
| 10/20/2010 | CN101864974A Folding single prop |
| 10/20/2010 | CN101864973A Method and apparatus for safety protection of temporary roof support |
| 10/20/2010 | CN101864972A Small supporting point full-protection-type tunnel bracket and supporting method thereof |
| 10/20/2010 | CN101864971A Portable rapid telescopic supporting post |
| 10/20/2010 | CN101864970A Method for supporting and protecting soft, collapsible and super thick coal seam tunnel based on filling behind support and device thereof |
| 10/13/2010 | CN201606090U 自锁式手动先导阀 Self-locking manual pilot valve |
| 10/13/2010 | CN201606089U 支护充填一体化液压支架 Supporting the integration of hydraulic support filling |
| 10/13/2010 | CN201606088U 用于充填支架的夯实机构 Compaction mechanism for filling the bracket |
| 10/13/2010 | CN201606087U 一种便捷恒阻式临时支护支柱 A convenient constant resistance Temporary support pillars |
| 10/13/2010 | CN201606086U 基于架后充填的松软易冒特厚煤层巷道支护装置 Based on the rear frame filling soft and easy to take special thick seam roadway devices |
| 10/13/2010 | CN1959063B Scalable steel pipe concrete support |
| 10/06/2010 | CN201599054U 十字滑道配合滑靴运送矿井支架装置 Cross slide with the delivery of mine stent device Slipper |
| 10/06/2010 | CN201599045U 液压支架立柱安装辅助装置 Hydraulic support column install auxiliary device |
| 10/06/2010 | CN201599044U 回液断路阀 Back to the liquid shutoff valve |
| 10/06/2010 | CN201599043U 一种矿用大断面巷道支护的复合金属支架 One kind of mine roadway with a large cross section of the composite metal stents |
| 10/06/2010 | CN101082279B Peg-pole-prestress supporting system and construction method thereof |
| 09/30/2010 | US20100247249 Mine support grout bags and grout packs |
| 09/29/2010 | CN201593434U Base bridge of hydraulic support |
| 09/29/2010 | CN201593433U Push rod of hydraulic bracket |
| 09/29/2010 | CN201593432U Linkage valve of hydraulic support |
| 09/29/2010 | CN201593431U Differential pressure combination valve of hydraulic jack |
| 09/29/2010 | CN201593430U Lifting infilled wall of hydraulic support |
| 09/29/2010 | CN201593429U Oil cylinder sealing type dual telescopic single hydraulic strut |
| 09/29/2010 | CN201593428U Hydraulic prop for blasting mining face |
| 09/29/2010 | CN101845958A Fully mechanized coal face bracket withdrawing method and withdrawing bracket traction spring exerciser |
| 09/29/2010 | CN101845957A Triple retractable column and hydraulic bracket |
| 09/22/2010 | CN201588639U Guide sleeve of jack |
| 09/22/2010 | CN201588638U Backing plate of downhole coal-mining backup post |
| 09/22/2010 | CN201588637U Double-resetting spring type double-telescopic single hydraulic prop |
| 09/22/2010 | CN101839142A Hydraulic support |
| 09/16/2010 | DE202009004753U1 Druckbegrenzungsventil Pressure relief valve |