| Patents for E21D 15 - Props; Chocks (3,432) |
|---|
| 01/27/2010 | CN201391330Y Lateral retaining wall device and hydraulic support |
| 01/27/2010 | CN201391327Y Mechanical extension bar prop for hydraulic bracket |
| 01/27/2010 | CN201391326Y Hydraulic support shifting anti-drift mechanism |
| 01/27/2010 | CN201391325Y Glider type bottom lifting mechanism of hydraulic support |
| 01/27/2010 | CN201391324Y Comprehensive mining hydraulic support of complete top plate of light type thin coal seam |
| 01/27/2010 | CN201391323Y Light hydraulic supporter |
| 01/27/2010 | CN201391322Y Safeguard low liquid injection type single hydraulic prop |
| 01/27/2010 | CN201391321Y Large-dig-angle low-level caving hydraulic support |
| 01/27/2010 | CN100584515C Production process of single hydraulic prop head |
| 01/20/2010 | CN201386566Y Translation upper beam hydraulic bracket |
| 01/20/2010 | CN100582434C Liquid control one-way valve for suspension moving top beam hydraulic chock |
| 01/13/2010 | CN201381973Y Autocontrol energy-saving emulsion liquid pumping plant |
| 01/13/2010 | CN201381865Y Top coal caving hydraulic support with double pendulum rods |
| 01/13/2010 | CN201381864Y Split-type front and rear end head hydraulic support |
| 01/13/2010 | CN201381863Y Hydraulic anchor rod drill bracket used in laneway for end hole drilling |
| 01/13/2010 | CN201381862Y High-intensity lamination bamboo board |
| 01/07/2010 | DE202009012284U1 Hydraulikzylinder mit Niro-Oberfläche Hydraulic cylinder with stainless steel surface |
| 12/23/2009 | CN201367908Y Simply support hydraulic bracket |
| 12/23/2009 | CN100572725C Inside press supporting method and supporting pipe fitting for underground construction |
| 12/16/2009 | CN201363156Y Expansion-proof safety valve used for hydraulic bracket upright post |
| 12/16/2009 | CN201363155Y Mine single oscillating bar breaking coal hydraulic support |
| 12/16/2009 | CN101602880A Chemical slip casting strengthening material and preparation method thereof |
| 12/09/2009 | CN201358804Y Yieldable U-shaped steel supporting standing positioning clamp cable |
| 12/09/2009 | CN201358803Y Skid prevention and adjustment mechanism for initial three brackets of full-mechanized mining hydraulic support |
| 12/09/2009 | CN201358802Y Special protecting hood for telescopic upright post for vertical hydraulic bracket |
| 12/09/2009 | CN201358801Y Individual hydraulic prop dustproof cover |
| 12/09/2009 | CN201358800Y Mine single hydraulic prop without welding and riveting |
| 12/09/2009 | CN201358799Y Novel individual hydraulic prop |
| 12/09/2009 | CN201358798Y Individual hydraulic prop |
| 12/09/2009 | CN201358797Y Double telescoping type suspension air-permeable individual hydraulic prop |
| 12/09/2009 | CN201358796Y High-tenacity full-stroke suspending outward injection type individual hydraulic prop |
| 12/09/2009 | CN201358795Y High mining height outer-injected reducing double-telescopic single hydraulic prop |
| 12/02/2009 | CN201354642Y Large-scale self-advancing gob-side entry retaining filling supporting stand |
| 12/02/2009 | CN100564901C Valve for hydraulic props of shield-type support frames, and shield-type support frame |
| 11/25/2009 | CN201351502Y Mechanized coal mining bracket loading platform |
| 11/25/2009 | CN201351501Y Multifunctional column shoe and column cap for mine |
| 11/25/2009 | CN201351500Y Annular laneway bracket with four three third-circle pole supports |
| 11/25/2009 | CN101586465A Construction method of large-diameter coal bunker flat-topping lid |
| 11/18/2009 | CN201347764Y Mining individual hydraulic prop |
| 11/18/2009 | CN201347763Y Cylinder shape laneway support stent for mine |
| 11/18/2009 | CN100560937C Thin basic rock shallow buried coal seam longwall face water-retaining mining method |
| 11/11/2009 | CN201344036Y Hydraulic bi-directional lock |
| 11/11/2009 | CN101575981A High inclination-angle termination point hydraulic support |
| 11/11/2009 | CN101575980A Hydraulic support double-telescopic upright post |
| 11/11/2009 | CN100559014C Multilevel control valve |
| 10/28/2009 | CN101566066A High-intensity hydraulic support pipe with wall thickness of 60mm-70mm |
| 10/28/2009 | CN100554642C Long-wall fully mechanized reclaiming room-type coal column mining method |
| 10/21/2009 | CN201330613Y High-pressure large-flow-rate safety valve |
| 10/21/2009 | CN201330612Y Double-action plunger suspending type upright post for hydraulic support |
| 10/21/2009 | CN201330611Y Double-action plunger type upright post for hydraulic support |
| 10/21/2009 | CN201330610Y I beam support collapse preventer |
| 10/21/2009 | CN101560883A Gob-side entry retaining work mould base |
| 10/15/2009 | WO2009053797A3 Mine support grout bags and grout packs |
| 10/15/2009 | US20090257831 Suspending Hydraulic Pillar |
| 10/14/2009 | CN101555801A Hydraulic prop piston |
| 10/14/2009 | CN101555800A Compound front beam hydraulic support and applications thereof |
| 10/07/2009 | CN201322120Y high-pressure large-flow inflated safety valve |
| 10/07/2009 | CN201322014Y Manual pilot valve |
| 10/07/2009 | CN201321862Y hydraulic two-way lock |
| 10/07/2009 | CN201321861Y Flexible shield support |
| 10/07/2009 | CN101550834A Automatic boost-type setting load guaranteeing device |
| 09/23/2009 | CN201314237Y Engineering plastics column base |
| 09/23/2009 | CN101539025A High flow safety valve |
| 09/16/2009 | CN201310364Y Rapid feed-return liquor shock resistance double-telescopic prop of hydraulic support |
| 09/16/2009 | CN101532388A Comprehensive mining hydraulic support mounting transport vehicle |
| 09/09/2009 | CN201306172Y Fully-mechanized working surface hydraulic support disassembly and assembly lifting frame |
| 09/09/2009 | CN201306171Y Automatic water adding device with pump box |
| 09/09/2009 | CN101526005A Skid shoe type bottom raising mechanism of hydraulic support |
| 09/09/2009 | CN101526004A Large inclination-angle low-position top coal hydraulic bracket |
| 09/09/2009 | CN101526001A Comprehensive mining opposite-pull working face coal excavating process for thin coal bed |
| 09/09/2009 | CN100538012C Hydraulic support for filling waste rock |
| 09/03/2009 | WO2009053796A3 A grout pack assembly and components thereof |
| 09/02/2009 | CN201301721Y Mine hydraulic upright post upper cavity end cap protection device |
| 09/02/2009 | CN201301720Y Mine underground gate roadway advance shoring supporting frame |
| 09/02/2009 | CN201301719Y Monomer hydraulic prop for mine underground |
| 09/02/2009 | CN201301718Y Simplified bracket used at end of fully-mechanized face |
| 09/02/2009 | CN201301717Y Plunger piston suspended-type bending-resistance individual hydraulic prop |
| 09/02/2009 | CN101519972A One-way sequence valve and bracket hydraulic sequence control system using same |
| 09/02/2009 | CN100535394C Suspension type hydraulic prop |
| 08/27/2009 | WO2009089555A3 Support |
| 08/26/2009 | CN201297178Y Dual-telescopic protective suspension single hydraulic prop |
| 08/26/2009 | CN101514633A Non-roadside supporting gob-side entry retaining process |
| 08/19/2009 | CN201292852Y Coal mine tunnel structure |
| 08/19/2009 | CN101509393A Closed dust source apparatus between hydraulic support frames of coal mine |
| 08/19/2009 | CN101509384A Umbrella stent |
| 08/13/2009 | US20090202310 Support for underground mining and tunnel construction |
| 08/12/2009 | CN201288574Y Monoblock hydraulic column for liquid column type mining |
| 08/12/2009 | CN201288573Y Inner liquid injection dual-telescopic column |
| 08/12/2009 | CN201288572Y Monoblock hydraulic column for light weight mine |
| 08/12/2009 | CN201288571Y Rack for three soft coal layer re-exploration laneway |
| 08/05/2009 | CN201284656Y T-shaped beam suspension type hydraulic support |
| 08/05/2009 | CN201284655Y Novel friction prop |
| 08/05/2009 | CN101498222A Double telescopic column and hydraulic support |
| 07/29/2009 | CN201280940Y Anti-reversing device for monomer prop on coal face |
| 07/29/2009 | CN201280939Y Hydraulic prop sleeve |
| 07/29/2009 | CN201280938Y Frame head end suspension device |
| 07/29/2009 | CN201280937Y Coal mine tunnel suspension device |
| 07/29/2009 | CN100519990C Chain suspension type hydraulic support |
| 07/23/2009 | WO2009089769A1 A light-duty hydraulic bracket |
| 07/22/2009 | CN201277050Y Supporting post top support and shield support |