| Patents for E21D 15 - Props; Chocks (3,432) |
|---|
| 06/05/2013 | CN202970741U Mine support column iron shoe |
| 06/05/2013 | CN202970740U Assisting device for hydraulic single prop |
| 06/05/2013 | CN202970739U Safety valve for coal mine hydraulic support |
| 06/05/2013 | CN202970738U Mine intrinsically safe type electro-hydraulic reversing valve core component |
| 06/05/2013 | CN202970737U Air pressure support column pressurization air supply system |
| 06/05/2013 | CN202964645U Round log supporting mechanical hand |
| 06/05/2013 | CN103133025A Gob-side retaining entry beforehand wall-caving roof-reinforcing method |
| 06/05/2013 | CN103133020A Nested mine roof supports |
| 06/05/2013 | CN103133019A Flexible shield support with adjustable height |
| 06/05/2013 | CN102094660B Integral high-strength flexible support method of roadway at large-inclined angle coal-seam longwall mining section |
| 06/05/2013 | CN101899985B Hydraulic support |
| 05/30/2013 | US20130136545 Nested Mine Roof Supports |
| 05/29/2013 | CN202954825U U-shaped steel leg recycling device |
| 05/29/2013 | CN103122766A Three-purpose valve assembly special tool |
| 05/29/2013 | CN103122765A Hinged push rod |
| 05/23/2013 | US20130129426 Grout pack restraining envelope |
| 05/23/2013 | US20130126695 Telescopic safety device |
| 05/22/2013 | CN202946168U Shed type roadway advanced support device |
| 05/22/2013 | CN103114864A Split type single hydraulic prop and operation method thereof |
| 05/22/2013 | CN102518456B Method for maintaining roof of composite bed under stress concentration regions |
| 05/22/2013 | CN102052083B Polygonal hydraulic active support bracket |
| 05/16/2013 | US20130121774 Crib Bag |
| 05/15/2013 | CN202937283U Mining horizontal stand column assembling machine |
| 05/15/2013 | CN202937282U Safety three-purpose valve for single hydraulic prop |
| 05/15/2013 | CN202937281U Three-position four-way inserted type manual-operation reversing valve |
| 05/15/2013 | CN202937280U Hydraulic control one-way valve for upright column of hydraulic support |
| 05/15/2013 | CN202937279U High-dipping flexible shield support for coal cutting |
| 05/15/2013 | CN103104267A Soft rock roadway whole digging shield support |
| 05/08/2013 | CN202926346U Dual-fluid-injection dual-sealing pressure-displaying memory type individual hydraulic support column |
| 05/08/2013 | CN202921256U Automatic proportioning device for mining emulsified liquid |
| 05/08/2013 | CN103089283A Double-telescopic single hydraulic prop |
| 05/08/2013 | CN103089282A High-strength light erosion prevention support |
| 05/08/2013 | CN102182459B Method for recovering remaining triangle coal on two-winged stope by flexible shield support mining method |
| 05/02/2013 | US20130108376 Yieldable support prop and method |
| 05/01/2013 | CN103075168A Yieldable support prop and method |
| 04/26/2013 | CA2792346A1 Yieldable support prop and method |
| 04/24/2013 | CN202900291U Rotation placing platform of coal mine combined mining hydraulic support |
| 04/24/2013 | CN202900290U I-shaped steel tunnel support decompression detecting device |
| 04/24/2013 | CN103061806A Composite roof thin seam fully-mechanized coal mining face gob-side entry retaining method |
| 04/24/2013 | CN102230386B Combined hydraulic strut cap |
| 04/24/2013 | CN102213102B Method for righting toppled brackets of large-inclined-angle working surface |
| 04/23/2013 | US8424973 Collapsible cushion |
| 04/17/2013 | CN202882958U Single hydraulic support column rigid interlocking device |
| 04/17/2013 | CN202882957U Valve-column integrated hydraulic support prop used for coal mine |
| 04/17/2013 | CN202882956U Underground coal mine channel advance support single body connecting fastener |
| 04/17/2013 | CN202882955U Blasting digging working face single column type forepoling device |
| 04/17/2013 | CN202882954U U-shaped steel support |
| 04/17/2013 | CN103046938A Single hydraulic prop for mines |
| 04/17/2013 | CN103046937A Mine I-steel trapezoidal shed with bottom beam |
| 04/10/2013 | EP2576982A1 Pumpable support with cladding |
| 04/10/2013 | CN202866836U Assembling tool for upright column of hydraulic support |
| 04/10/2013 | CN202866835U Hydraulic support outer bottom adjusting mechanism and hydraulic support |
| 04/10/2013 | CN202866834U Self-filtering slide valve type high pressure guide stop valve |
| 04/10/2013 | CN202866833U Support-adjusting device of suspended moving support in coal mining |
| 04/10/2013 | CN202866832U Split-type dual-lug loop and split-type self-fastening dual-lug loop |
| 04/10/2013 | CN202866831U Anti-corrosion plunger of mine single hydraulic prop |
| 04/10/2013 | CN202866830U Bidirectional single hydraulic prop |
| 04/10/2013 | CN202866829U Front end upwarp type shield support of thin coal seam |
| 04/10/2013 | CN103032084A Telescopic flexible shield support |
| 04/10/2013 | CN101943009B Plate-typed draw ring used for connecting draw rods on tunnel metal support |
| 04/09/2013 | US8414226 Mine support grout bags and grout packs |
| 04/03/2013 | CN202851024U Large plate support device |
| 04/03/2013 | CN202851023U Two-way lock used for coal mine balancing lifting jack |
| 04/03/2013 | CN202851022U Stop valve for coal mine hydraulic support |
| 04/03/2013 | CN202851021U Hydraulic support liquid-return shut-off valve for mining |
| 04/03/2013 | CN202851020U Reversing valve for coal mine hydraulic support |
| 04/03/2013 | CN202851019U 400L/min safe valve for hydraulic support |
| 04/03/2013 | CN202851018U 630L/min safe valve for hydraulic support |
| 04/03/2013 | CN202851017U Coal mine working face head-tail roadway advance support individual hydraulic prop tilting preventing device |
| 04/03/2013 | CN103026000A Pumpable support with cladding |
| 04/03/2013 | CN103016032A Method for erecting single hydraulic prop |
| 04/03/2013 | CN103016031A Mining telescopic support and using method thereof |
| 04/03/2013 | CN102226404B Method for retracting surplus hydraulic supports of fully mechanized mining face |
| 04/02/2013 | US8408845 Pedestal support for mine prop |
| 03/28/2013 | WO2013041449A1 Lowering pot for a heavy load support of a support structure |
| 03/27/2013 | CN202832603U Novel medium-flux hydraulic control one-way valve |
| 03/27/2013 | CN202832586U Hydraulic support dismantling device |
| 03/27/2013 | CN202832585U Hydraulic tensioner |
| 03/27/2013 | CN202832584U Vertical displacement regulating device in assembling pillar two cylinders for mine |
| 03/27/2013 | CN202832583U Support of hydraulic pressure monomer tent top beam |
| 03/27/2013 | CN202832582U Single prop supercharging device |
| 03/27/2013 | CN202832581U Hydraulic support upright repair tool |
| 03/27/2013 | CN202832580U Middle-flow hydraulic control one-way valve |
| 03/27/2013 | CN202832579U Plug-in mounting type flow reversing valve |
| 03/27/2013 | CN202832578U Large-flow hydraulic control one-way valve |
| 03/27/2013 | CN202832577U Whole type liquid return tee-joint circuit break valve |
| 03/27/2013 | CN202832576U Three-use valve for mining individual hydraulic prop |
| 03/27/2013 | CN202832575U Two-position two-way self-locking type spherical check valve |
| 03/27/2013 | CN202832574U Large mining height hydraulic support |
| 03/27/2013 | CN202832573U Hydraulic support joist replacement device |
| 03/27/2013 | CN202832572U Vertical column applied to hydraulic support |
| 03/27/2013 | CN202832571U Coalface support for similar material simulation test |
| 03/27/2013 | CN102996146A Early warning hydraulic prop device |
| 03/27/2013 | CN102996145A Automatic erecting shed platform device of fully mechanized mining face end |
| 03/27/2013 | CN102207002B Equipment special for disassembling and assembling coal mine underground comprehensive machine equipment |
| 03/27/2013 | CN102135004B Liquid return circuit breaker valve |
| 03/20/2013 | CN202810877U Safe operation device of liquid filling gun |
| 03/20/2013 | CN202810876U Hydraulic pressure stand column used for mine |
| 03/20/2013 | CN202810875U Whole and single hydraulic support of plunger |
| 03/20/2013 | CN202810874U Upright of hydraulic support for mine |