| Patents for E21D 15 - Props; Chocks (3,432) |
|---|
| 04/26/2006 | CN1253401C Cement-containing compositions and method of use |
| 04/25/2006 | US7033430 Cement-containing compositions and method of use |
| 04/20/2006 | DE19749275B4 Dosierhochdrucksetzpistole Dosierhochdrucksetzpistole |
| 04/19/2006 | CN1760472A Regulating device for pressure and expansion or contraction deformation of steel shore structure for foundation pit |
| 04/12/2006 | CN2771482Y Floating-disc underframe |
| 04/12/2006 | CN2771481Y Height-joined hydraulic prop |
| 04/06/2006 | WO2006034675A1 Compressible concrete and method for producing the same |
| 04/05/2006 | CN2769520Y Single hydraulic prop base structure for mining supporting |
| 04/05/2006 | CN2769519Y Directional control valve |
| 04/05/2006 | CN2769518Y Down-moving control valve |
| 04/05/2006 | CN2769517Y Three-beam hydraulic prop |
| 03/30/2006 | WO2006032351A1 Device to aid the unloading of support elements |
| 03/29/2006 | CN2767663Y Big flow safety valve |
| 03/29/2006 | CN1752413A Suspension type hydraulic prop |
| 03/15/2006 | CN2764935Y Ladder type column |
| 03/09/2006 | DE10045680B4 Hydraulikzylinder als Grubenstempel oder Rückzylindereinheit im untertägigen Bergbau Hydraulic cylinder as props or rear cylinder unit in underground mining |
| 03/08/2006 | CN2763520Y Hydraulic controlled check valve with working pressure of 40 MPa |
| 03/08/2006 | CN2763519Y Chain type monomer support falling-proof device |
| 03/08/2006 | CN2763518Y Safety support device for mine |
| 03/08/2006 | CN2763517Y Reversing valve with working pressure of 31.5 MPa |
| 03/08/2006 | CN2763516Y Reversing valve with rated flor of 400 L/min |
| 03/08/2006 | CN2763515Y Front beam for dig heading face |
| 03/08/2006 | CN2763514Y Drop-proof hinged type double T steel cap |
| 03/02/2006 | DE4400677B4 Entlastungsventil für ein Strebausbaugestell Relief valve for a mine roof support |
| 03/01/2006 | CN2761844Y Protective supporter of coal extracting top plate |
| 02/15/2006 | CN2758484Y Light single body hydraulic column |
| 02/08/2006 | CN2756828Y Hydraulic sinigle support pole movable pole protective sleeve |
| 02/02/2006 | US20060024138 Prop head bearing |
| 02/01/2006 | CN2755283Y Liquid discharger of long-distance monomeric hydraulic pillar |
| 02/01/2006 | CN2755282Y Apparatus for restoring machines from comprehensive coal face |
| 02/01/2006 | CN2755281Y Hydraulic stand of pillar extraction |
| 01/25/2006 | CN2753884Y Mine driving face support anti-slip device |
| 01/18/2006 | CN2752440Y Mining tunnel fast lifting and lowering prop |
| 01/05/2006 | US20060002770 Lite mine roof support crib and method |
| 12/29/2005 | DE202005017073U1 Hydraulic prop for use as pit prop, has sleeve retainer fastened at front side of cylinder tube casing and comprising retaining grooves for sealing and guiding unit, where edges of grooves are provided with bronze coated weld |
| 12/08/2005 | US20050271481 Method for joining the functional parts of hydraulic or pneumatic working devices, and joining connection |
| 12/08/2005 | DE202005015678U1 Coupling clamp for securing plug connectors for hydraulic hose lines, especially for mining, has two leg inner surfaces with recess in first section extending over full width of inner surface as securing device for plug connector nipple |
| 11/30/2005 | CN1702298A Design method for push rod of hydraulic support |
| 11/24/2005 | US20050257448 Support device for a rib |
| 11/23/2005 | CN2742140Y Mounting composite workings urface machinery device |
| 11/16/2005 | CN2740780Y Oil ejector of hydraulic power coal mining machine |
| 11/09/2005 | CN1693669A Hytraulic chock synchronous spraying operation valve |
| 11/02/2005 | CN1690361A Fully-mechanized mining working face smooth trough advancing reinforcement support process and hydraulic support therefor |
| 10/19/2005 | CN2735001Y Hydraulic roadway support for moving fully-mechanized mining equipment in coal mine |
| 10/12/2005 | CN2732996Y Side guard plate for coal mining support |
| 09/28/2005 | CN2729314Y Single hydraulic prop injection valve |
| 09/28/2005 | CN2729313Y Single hydraulic prop back liquid valve |
| 09/28/2005 | CN2729312Y Small flame-proof energy-saving emulsion pump station |
| 09/21/2005 | CN1671947A Method for joining the functional parts of hydraulic or pneumatic working devices, and joining connection |
| 09/15/2005 | US20050201837 Truss shoe |
| 09/07/2005 | CN2723678Y Hydraulic support control valve unit |
| 08/24/2005 | CN2720117Y Two telescopic suspension supporting column |
| 08/24/2005 | CN1657745A Coal-minin method of high-dipping thick seam |
| 08/17/2005 | EP1563166A1 Mine support |
| 07/27/2005 | CN2713015Y Pipe-shed supporting device by using pipe jacking method |
| 07/14/2005 | WO2005045193A3 Support pack and support pack component |
| 07/13/2005 | CN2709653Y Pneumatic prop raising machine for mine |
| 07/13/2005 | CN1637232A Telescopic rod stabilizing mechanism for hydraulic support |
| 07/06/2005 | CN2707964Y Suspended hydraulic prop |
| 06/30/2005 | WO2005059310A1 Component for support pack |
| 06/30/2005 | US20050141971 Yieldable prop |
| 06/28/2005 | US6910834 Mine prop |
| 06/15/2005 | CN2704835Y Pressure tester of data storing monomeric hydraulic pillar |
| 06/08/2005 | CN1624297A Yieldable prop having a yield section |
| 06/08/2005 | CN1624276A Assembling composite shore |
| 06/02/2005 | WO2005049967A1 Pole assembly |
| 06/01/2005 | EP1534929A1 Method for joining the functional parts of hydraulic or pneumatic working devices, and joining connection |
| 05/25/2005 | CN2702055Y Stabilizing mechanism for telescopic rod of hydraulic support |
| 05/19/2005 | WO2005045193A2 Support pack and support pack component |
| 05/18/2005 | CN2700562Y Hydraulic support for forepoling of fully mechanized mining workface gate |
| 05/18/2005 | CN2700561Y Temporary supporter for mine tunnel |
| 04/27/2005 | CN2695640Y Large-flow three-used valve special for single hydraulic pillar |
| 04/20/2005 | CN2694013Y Median discharge reversing valve |
| 04/20/2005 | CN2693951Y High inclination-angle hydraulic support |
| 04/19/2005 | CA2062879C Yieldable load support |
| 03/31/2005 | US20050070187 Form for containing settable filler material during setting |
| 03/30/2005 | CA2443480A1 A form for containing settable filler material during setting |
| 03/23/2005 | CN2687341Y Low-position coal blasting-caving hydraulic prop |
| 03/23/2005 | CN2687340Y Big-incidence low-position coal-caving hydraulic prop |
| 03/23/2005 | CN2687339Y Unit hydraulic prop with dust-collecting cavity in head |
| 03/09/2005 | CN2683851Y Steel support safety card |
| 02/23/2005 | CN1584291A Suspending hydraulic pillars |
| 02/02/2005 | CN2675865Y 铁鞋 Iron shoes |
| 02/02/2005 | CN2675864Y Hydraulic support for tunnel digging working face |
| 01/26/2005 | CN2674094Y Quick liquid filling pole-raising and pressure-increasing for single hydraulic supporting pole |
| 01/26/2005 | CN2674093Y Assembling type large-stroke, double cylinders, double-extension single hydraulic pole |
| 01/05/2005 | CN1560435A Hydraulic supporter for tunnel digging working face |
| 12/29/2004 | CN2667162Y Double-telescopic hydraulic monomer prop |
| 12/23/2004 | WO2004111349A1 Mine prop |
| 12/22/2004 | CN2665359Y End socket hydraulic support side protection apparatus |
| 12/16/2004 | DE202004015947U1 Mining machine cylinder has sliding surfaces coated with fused bronze layer of defined thickness to reduce corrosion and wear |
| 12/08/2004 | CN2661924Y Maintenance free type hydraulic prop |
| 12/02/2004 | US20040240948 Mine prop |
| 12/01/2004 | CN2660127Y Single extension, single hydraulic prop |
| 12/01/2004 | CN2660126Y Wedge concrete precast assembly for mine |
| 11/24/2004 | CN2658400Y Safety valve for 1000L, large flow, long service life, planar coalmine hydraulic support |
| 11/17/2004 | CN2656637Y Single body upright column type temporary supporting protection device |
| 11/17/2004 | CN1546839A Ladder type mining method using united pillars to support roof and partition stope |
| 11/11/2004 | US20040223815 Yieldable prop having a yield section |
| 11/03/2004 | CN2653129Y Elliptic U shape steel contractable rack |