| Patents for E21D 15 - Props; Chocks (3,432) |
|---|
| 06/02/2010 | CN201496077U Portable type individual hydraulic prop capable of injecting liquid at low position |
| 06/02/2010 | CN201496076U Floated type single hydraulic prop stay |
| 06/02/2010 | CN101718206A Pilot reversing valve for main frame and adjacent frame operation |
| 06/02/2010 | CN101718205A Neighboring frame-operated pilot reversing valve |
| 06/02/2010 | CN101718204A Electrohydraulic control device used for frame controller of hydraulic support |
| 06/02/2010 | CN101718203A Coal mine support post of composite material |
| 06/02/2010 | CN101349159B Method of single channel railless plastic core-rubber-tire vehicle back withdrawing fully-mechanized mining working face |
| 06/02/2010 | CN101280391B High-strength tough hydraulic prop seamless steel pipe |
| 05/26/2010 | CN201486587U Full-mechanized mining face full-automatic support spraying device |
| 05/26/2010 | CN201486576U Connecting device |
| 05/26/2010 | CN201486575U Unloading spherical stop valve |
| 05/26/2010 | CN201486574U Light hand-operated hydraulic supporting frame |
| 05/26/2010 | CN101713295A Sliding-plate type combined suspension hydraulic support |
| 05/19/2010 | CN201474710U Large-flow relief valve |
| 05/19/2010 | CN201474709U Single column anti-tilting device |
| 05/19/2010 | CN201474708U Enhanced lengthened low-order injection single hydraulic prop |
| 05/19/2010 | CN201474707U Oil cylinder-enhanced low-order injection single hydraulic prop |
| 05/19/2010 | CN201474706U Reinforced sleeve type low-level injection monomer hydraulic pillar |
| 05/19/2010 | CN201474705U Narrow fully-mechanized mining hydraulic bracket |
| 05/19/2010 | CN101105133B Double extension suspended type hydraulic vertical prop |
| 05/18/2010 | US7717649 Suspending hydraulic pillar |
| 05/13/2010 | US20100119311 Hydraulic prop comprising thin-walled exterior and interior pipes |
| 05/12/2010 | CN201460925U Large-flow pressure indication liquid injection gun |
| 05/12/2010 | CN201460924U Intrinsic safety type electric pilot operated directional control valve for mine |
| 05/12/2010 | CN201460923U Equidistant mechanism for hydraulic supports |
| 05/12/2010 | CN201460922U Hydraulic control three-way valve |
| 05/12/2010 | CN201460921U Vertical column connecting lug breakage preventing device of hydraulic bracket |
| 05/12/2010 | CN201460920U Monomer hydraulic support post for mine |
| 05/12/2010 | CN201460919U Universal supporting column |
| 05/12/2010 | CN201460918U Double-telescopic vertical column of hydraulic bracket |
| 05/12/2010 | CN201460917U Hydraulic support for filing waste rock |
| 05/12/2010 | CN201460916U Gangue filling hydraulic support |
| 05/12/2010 | CN201460915U Telescopic U-shaped steel roadway support |
| 05/12/2010 | CN201460914U Contractible laneway bracket of U-steel |
| 05/05/2010 | CN201448116U Roadway temporary support hydraulic combined bracket |
| 04/29/2010 | US20100104376 Grout bag type of underground support |
| 04/28/2010 | CN201443548U Energy-saving lightweight type emulsion pump station |
| 04/28/2010 | CN201443484U Small fast manual prop-lifting hydraulic pump |
| 04/27/2010 | US7704018 Automated, low profile drilling/bolting module with automated stab jack |
| 04/14/2010 | CN101694162A Hydraulic support and bottom lifting device thereof |
| 04/07/2010 | CN101021156B Gril capable of putting top coal |
| 03/31/2010 | CN201433946Y Automatic unloading and self cleaning filter for emulsion pump station |
| 03/31/2010 | CN201433778Y Hydraulic support having a lifting function |
| 03/31/2010 | CN201433777Y Gob-side entry retaining work die holder |
| 03/24/2010 | CN201428466Y Angle steel triangular frame for steel support structure |
| 03/24/2010 | CN201428465Y Beam-column composite support hydraulic bracket |
| 03/24/2010 | CN201428464Y Single hydraulic prop |
| 03/24/2010 | CN201428463Y Mine shore |
| 03/17/2010 | CN201424947Y Righting device for comprehensive mining bracket |
| 03/17/2010 | CN201424946Y Alternate two-way lock and hydraulic bracket |
| 03/17/2010 | CN201424945Y Shed leg reinforcer for heading faces of coalmines |
| 03/10/2010 | CN201420719Y Reversing valve |
| 03/10/2010 | CN201420563Y Hydraulic support and traction device thereof |
| 03/10/2010 | CN201420560Y Suspended individual hydraulic prop base |
| 03/10/2010 | CN201420559Y Hydraulic prop piston |
| 03/10/2010 | CN201420558Y Prop-drawing handle of hydraulic prop |
| 03/10/2010 | CN201420557Y Suspended individual hydraulic prop provided with prop-drawing handle |
| 03/10/2010 | CN201420556Y Suspended individual hydraulic prop provided with pressure-resistant base |
| 03/03/2010 | CN201416451Y Hydraulic bracket spraying device |
| 03/03/2010 | CN101660424A Rigid-flexible combined guiding device of single hydraulic prop |
| 03/03/2010 | CN101660423A Floating type guiding sleeve of single hydraulic prop |
| 03/03/2010 | CN101660422A Single hydraulic prop |
| 02/24/2010 | CN201412405Y Integral inserting electrohydraulic controlled reversal valve with staged filtering function |
| 02/24/2010 | CN201412172Y Bidirectional externally injected single hydraulic prop without stigma |
| 02/24/2010 | CN201412171Y Sector hydraulic support system used for controlling great deformation of steel frame in tunnel construction |
| 02/24/2010 | CN201412170Y Mechanical support system used for controlling great deformation of steel frame in tunnel construction |
| 02/24/2010 | CN201412169Y Pressure indication type single hydraulic prop for mine |
| 02/24/2010 | CN201412168Y Single type hydraulic lifting pillar |
| 02/24/2010 | CN201412167Y Steel purlin of steel bracing structure |
| 02/24/2010 | CN201412166Y Setting pressure device for support of U-shaped steel course |
| 02/24/2010 | CN101655010A Dual-protection single hydraulic prop |
| 02/17/2010 | CN201407059Y One-way sequence valve and hydraulic-pressure rack control system employing same |
| 02/17/2010 | CN201407058Y Special individual hydraulic prop for thin coal layer |
| 02/17/2010 | CN201407057Y Large-mining high-covering type hydraulic bracket |
| 02/10/2010 | CN201401183Y Face-end support antiskid device of large inclined angle fully-mechanized caving face |
| 02/10/2010 | CN201401182Y Upper prop end plug of individual hydraulic prop |
| 02/10/2010 | CN201401181Y Expanding device for coal mining |
| 02/10/2010 | CN201401180Y U-beam and I- beam combined high strength support |
| 02/03/2010 | CN201396466Y Self-lock type globe stop valve |
| 02/03/2010 | CN201396177Y Novel automatic pressurization type setting load guarantee device |
| 02/03/2010 | CN201396176Y Compound multi-purpose column shoe column cap |
| 02/03/2010 | CN201396175Y Balance jack differential directional lock |
| 02/03/2010 | CN201396174Y Safety valve with nominal flow of 1000L/min |
| 02/03/2010 | CN201396173Y Safety valve with nominal flow of 500L/min |
| 02/03/2010 | CN201396172Y Plug-in type hydraulic control one-way valve |
| 02/03/2010 | CN201396171Y Side-wall protection jack bidirectional lock |
| 02/03/2010 | CN201396170Y Pushing one-way lock |
| 02/03/2010 | CN201396169Y Balance jack bidirectional lock for hydraulic support of coal mine fully-mechanized face |
| 02/03/2010 | CN201396168Y Balance jack bidirectional lock for hydraulic support of coal mine fully-mechanized face |
| 02/03/2010 | CN201396167Y Plug-in type balance jack bidirectional lock |
| 02/03/2010 | CN201396166Y Side-wall protection jack bidirectional lock |
| 02/03/2010 | CN201396165Y Plug-in type balance jack bidirectional lock |
| 02/03/2010 | CN201396164Y Coal mine hydraulic support reciprocating dynamic sealing assembly structure |
| 02/03/2010 | CN201396163Y Top cover lengthening type hydraulic prop for mine |
| 02/03/2010 | CN201396162Y Double-handle hydraulic prop for mine |
| 02/03/2010 | CN201396161Y Double-plunger hydraulic prop for mine |
| 02/03/2010 | CN201396160Y Combined support with mudsill |
| 02/03/2010 | CN101638992A Mine individual hydraulic prop |
| 02/02/2010 | US7654777 Grout pack restraining system |
| 01/27/2010 | EP2147191A2 Hydraulic ram comprising thin-walled exterior and interior pipes |