| Patents for E21D 15 - Props; Chocks (3,432) |
|---|
| 08/31/2011 | CN102168567A Filling supporting partition board bracket |
| 08/31/2011 | CN101864971B Portable rapid telescopic supporting post |
| 08/31/2011 | CN101749036B Highly telescopic hydraulic support for low coal seam |
| 08/31/2011 | CN101555800B Compound front beam hydraulic support and applications thereof |
| 08/25/2011 | WO2011101716A2 A device for roof support of underground mine/tunnel |
| 08/24/2011 | CN201943728U 一种液压支架底座腔体结构 A hydraulic support base cavity structure |
| 08/24/2011 | CN201943720U 一种运送单体支柱的小车 One kind of car transport Prop |
| 08/24/2011 | CN201943719U 一种液控单向阀 One kind of check valve |
| 08/24/2011 | CN201943718U 自动配液站 Automatic dosing station |
| 08/24/2011 | CN201943717U 外注式单体液压支柱 Outer single hydraulic prop |
| 08/24/2011 | CN201943716U 表面防腐处理的新型液压支架立柱 New Hydraulic stent surface embalmed uprights |
| 08/24/2011 | CN201943715U 一种液压支架及其脚踏板装置 A hydraulic device holder and pedals |
| 08/24/2011 | CN201943710U 一种应用于窄煤柱留巷的支护装置 Applied to narrow coal pillar roadway support device |
| 08/23/2011 | US8001733 Adjustable jack post |
| 08/17/2011 | CN201934115U 特大采高液压支架 Large mining height hydraulic support |
| 08/17/2011 | CN201934111U 插装式平衡千斤顶双向锁 Cartridge jack balanced two-way lock |
| 08/17/2011 | CN201934110U 电液控换向阀 Electro-hydraulic control valve |
| 08/17/2011 | CN201934109U 一种超大流量安全阀 One kind of large flow valve |
| 08/17/2011 | CN201934108U 一种液控单向阀 One kind of check valve |
| 08/17/2011 | CN201934107U 保压顶紧立柱 Packing top tight column |
| 08/17/2011 | CN102155244A Easy disassembly and assembly mining single hydraulic prop with warning function |
| 08/17/2011 | CN102155243A Mineral individual hydraulic prop |
| 08/17/2011 | CN101725368B Thick seam large mining height working face gob-side entry retaining method |
| 08/10/2011 | CN201924943U 液控单向阀 Check valve |
| 08/10/2011 | CN201924942U D形密封圈 D-rings |
| 08/10/2011 | CN102146801A Single hydraulic prop for underground exploitation working surface |
| 08/10/2011 | CN101196119B Hydraulic support cap |
| 08/03/2011 | CN201915976U 煤炭综采支架搬运车 Mechanized coal mining stent truck |
| 08/03/2011 | CN201915975U 一种插装式大流量硬密封换向阀 A large flow-mounted hard seal valve plug |
| 08/03/2011 | CN201915974U 三防矿用单体液压支柱 Three anti-mining hydraulic prop |
| 08/03/2011 | CN201915973U 一种新型单体液压支柱 A new hydraulic prop |
| 08/03/2011 | CN102140923A Guide ring overwelding seam large-cylinder bottom double-telescopic upright column |
| 07/27/2011 | CN201908666U Gas-liquid support post |
| 07/27/2011 | CN102135005A Method for supporting roof of roadway under coal pillar and gob transition section |
| 07/27/2011 | CN102135004A Liquid return circuit breaker valve |
| 07/27/2011 | CN102135003A Cartridge high-flow hard sealing upright post hydraulic control one-way valve |
| 07/27/2011 | CN102135002A Remotely controlled mechanical telescopic support pillar |
| 07/27/2011 | CN102134043A Crawler hydraulic support assembling machine |
| 07/27/2011 | CN101694162B Hydraulic support and bottom lifting device thereof |
| 07/27/2011 | CN101655010B Dual-protection single hydraulic prop |
| 07/20/2011 | CN201902216U Passage supporting device |
| 07/20/2011 | CN201902214U Automatic exhaust monomer hydraulic strut |
| 07/20/2011 | CN102128037A Plug-in mounting stand column hydraulic control one-way valve |
| 07/12/2011 | US7975986 All-air vehicle lifting jack |
| 07/07/2011 | US20110164929 Lite mine roof support crib and method |
| 07/06/2011 | CN201891421U Hydraulic bracket |
| 07/06/2011 | CN102116160A External reversal valve for double-acting plunger type vertical post |
| 07/06/2011 | CN102116159A Hydraulic support of suspension roof timber capable of adjusting direction |
| 07/06/2011 | CN101718203B Coal mine support post of composite material |
| 06/29/2011 | CN101205810B Mining hydraulic support self-boosting system |
| 06/22/2011 | CN201874592U Long push rod with tail tailor-welded and formed by steel plates |
| 06/22/2011 | CN201874591U Upper beam telescopic support arm |
| 06/22/2011 | CN201874251U Extension pipe shore |
| 06/22/2011 | CN102102526A Coal mine roadway supporting method and working face hole-cutting anchor mesh ladder and individual supporting device used by same |
| 06/22/2011 | CN102102525A Hydraulic support and pedal plate device thereof |
| 06/15/2011 | CN201865678U Integral in-position mounting and return device for underground hydraulic support |
| 06/15/2011 | CN201865677U Shutting-type handle for operation valve group of hydraulic bracket |
| 06/15/2011 | CN201865676U Liquid return shutoff valve |
| 06/15/2011 | CN201865675U Special connecting part for fixing hydraulic bracket |
| 06/15/2011 | CN102094661A High-efficient individual hydraulic prop |
| 06/15/2011 | CN102094660A Integral high-strength flexible support method of roadway at large-inclined angle coal-seam longwall mining section |
| 06/08/2011 | CN201857981U Fixing device for reverse splayed structure of upright post of hydraulic support |
| 06/08/2011 | CN201857975U Supported comprehensive tunnel boring machine |
| 06/08/2011 | CN102086769A Method for retracting hydraulic support by utilizing four shield supports |
| 06/01/2011 | CN201851141U Novel stack type hydraulic support |
| 06/01/2011 | CN201851140U Three-level protective net device for hydraulic support |
| 06/01/2011 | CN201851136U Three-function valve dustproof plug for monomer hydraulic strut |
| 06/01/2011 | CN201851135U Novel valve protection device of fully mechanized mining support |
| 06/01/2011 | CN201851134U Linkage tilting prevention device for individual hydraulic props |
| 06/01/2011 | CN101509384B Umbrella stent temporary support device |
| 06/01/2011 | CN101413395B Valve arrangement |
| 06/01/2011 | CN101285391B Vertical column and its inner pressurization hydraulic support setting load hoisting system |
| 05/26/2011 | WO2011063433A2 A pressure indicating device |
| 05/25/2011 | CN201843629U Fiber mesh device used for controlling top plate |
| 05/25/2011 | CN201843627U Hydraulic support truck-loading platform |
| 05/25/2011 | CN201843626U Hydraulic support withdrawing traction machine for coal mine |
| 05/25/2011 | CN201843625U Dismounting platform for underground hydraulic bracket |
| 05/25/2011 | CN201843252U Bamboo-based structural plate |
| 05/25/2011 | CN102072219A Quickly loading booster cylinder and high-flow safety valve test device using same |
| 05/25/2011 | CN101602880B Chemical slip casting strengthening material and preparation method thereof |
| 05/19/2011 | US20110114813 Free standing support |
| 05/18/2011 | CN201837497U Pressure sensor for mines |
| 05/18/2011 | CN201835849U Waste rock baffling guard mesh device for hydraulic support |
| 05/18/2011 | CN201835844U Tilting prevention device for I-shaped steel support frame used in mine |
| 05/18/2011 | CN102061921A Down-dip mining method of shaped hydraulic bracket on long-wall working surface in direction of large dip angle coal bed |
| 05/11/2011 | CN201826878U Underground remote-control pulley type shield support in mine |
| 05/11/2011 | CN201826867U Socket |
| 05/11/2011 | CN201826866U Connection locating device |
| 05/11/2011 | CN201826865U Walking beam of hydraulic support test stand |
| 05/11/2011 | CN201826864U Novel waste rock rolling prevention device |
| 05/11/2011 | CN201826863U Fully mechanized mining hydraulic support device capable of abdicating and buffering |
| 05/11/2011 | CN201826862U Demising buffering and power-absorbing single hydraulic bracket device |
| 05/11/2011 | CN201826861U Clam type support |
| 05/11/2011 | CN201826860U Novel deformation-resistant mine I-beam bracket |
| 05/11/2011 | CN201826852U Impact abdicating, energy absorbing and supporting device for coal rock laneway |
| 05/11/2011 | CN201826439U Assembled self-compaction steel tube concrete combined structure |
| 05/11/2011 | CN102052083A Polygonal hydraulic active support bracket |
| 05/11/2011 | CN101575981B High inclination-angle termination point hydraulic support |
| 05/11/2011 | CN101260805B Fully-mechanized mining method for safely passing bottom board laneway rock pillar |
| 05/04/2011 | CN201818318U Support device for coal mine |