| Patents for E21D 15 - Props; Chocks (3,432) |
|---|
| 10/21/2004 | DE202004009239U1 Hydraulic pit prop gas the inner sleeve fitted to the upper thrust plate via an insert profile which compensates for reduction in the length of the inner sleeve during refurbishing |
| 10/20/2004 | CN2649775Y External-injection type unit hydraulic prop sealing device |
| 10/13/2004 | CN2648071Y Light steel rails ladder beam and drift chock of mine well |
| 10/13/2004 | CN2648070Y Double telescopic single hydraulic prop |
| 10/07/2004 | DE202004012138U1 Stempelkopflagerung zwischen Kappe und Stempel eines Schildausbaugestells Punch head positioning between the cap and the stamp of a shield support frame |
| 09/29/2004 | CN2644676Y Suspending and pushing device for combined top beam hydraulic support joist |
| 09/08/2004 | CN1526914A Hydraulic coal mine support for low-position roof blasting-down |
| 09/01/2004 | CN2637734Y Single body hydraulic post column connector |
| 09/01/2004 | CN2637733Y Single body hydraulic supporting frame for mine use |
| 08/25/2004 | CN1163660C Reinforcing bar netted chock and netted-shell bolting and shotcrete support |
| 08/18/2004 | CN2634224Y Pneumatic hydraulic safety valve |
| 08/11/2004 | CN2632320Y Leakageproof environmental protection monomeric hydraulic pillar without machining |
| 07/27/2004 | CA2085814C Preload headboard for an elongate prop |
| 07/21/2004 | CN2627215Y Single swing link hydraulic support |
| 07/21/2004 | CN1514109A All in one hydraulic post column |
| 07/14/2004 | CN2625582Y Tail beam and spile interlocking type low-level caving coal hydraulic support |
| 07/14/2004 | CN2625581Y Glass fibre reinforced plastic backbone |
| 07/14/2004 | CN2625580Y Rubber piston single-body hydraulic support |
| 07/07/2004 | CN2623875Y High strength antiskid cap piece |
| 07/01/2004 | WO2004018778A3 Shoring system apparatus and method for shoring |
| 06/24/2004 | WO2004053294A1 Height adjustable support prop |
| 06/03/2004 | DE202004004858U1 Telescopic support, especially for use underground in e.g. tunnels or mines, includes inner tube with stop for abutting against end of outer tube to set support length |
| 05/27/2004 | WO2004044382A1 Mine support |
| 05/27/2004 | DE19528327B4 Hochdrucksetzpistole High pressure setting gun |
| 05/21/2004 | WO2004042195A1 Mine support component |
| 05/20/2004 | US20040096278 Provision of support in underground mine workings |
| 05/19/2004 | DE20319896U1 Folding hollow prop, in particular to be used in mining, comprising support ring deformable or detachable for transport |
| 05/12/2004 | CN2615338Y Single-hydraulic prop press surrounding guide ring |
| 04/29/2004 | US20040081518 Yieldable prop |
| 04/21/2004 | CN2612798Y Stereoscopic truss supporting facilities |
| 04/14/2004 | CN1488838A Mining unity hydraulic prop |
| 04/07/2004 | CN2610089Y Integral column jacket of micro-drag metal friction support |
| 03/24/2004 | CN2607447Y Single hydraulic prop |
| 03/18/2004 | WO2004022917A1 Method for joining the functional parts of hydraulic or pneumatic working devices, and joining connection |
| 03/18/2004 | US20040050300 Cement-containing compositions and method of use |
| 03/18/2004 | DE10241801A1 Verfahren zum Fügeverbinden der Funktionsteile von hydraulischen oder pneumatischen Arbeitsvorrichtungen und Fügeverbindung A method of joining connecting of the functional parts of hydraulic or pneumatic operating devices and joining compound |
| 03/10/2004 | CN2606170Y Multifunctional two stage aerated support for hammer drill |
| 03/04/2004 | WO2004018778A2 Shoring system apparatus and method for shoring |
| 02/25/2004 | CN2604524Y Inserting hydraulic control one-way valve |
| 02/19/2004 | WO2003031773A3 Lite mine roof support crib and method |
| 02/18/2004 | CN1476419A Cement-containing compositions and method of use |
| 02/18/2004 | CN1138904C Hydraulic drivage support with front cantilever |
| 02/12/2004 | DE19503071B4 Teleskopstempel für den Einsatz im untertägigen Berg-, Tunnel- und Hochbau Telescopic ram for use in underground mining, tunneling and construction |
| 01/14/2004 | CN2599239Y Supporting pillar for mine use |
| 01/14/2004 | CN1467362A Inorganic mine timber material |
| 01/08/2004 | WO2003085234B1 Inflatable mine support pack |
| 01/08/2004 | DE10227976A1 Druckbegrenzungsventil mit zweiteiligem Federtellerstößel und Dämpfungskammer Pressure relief valve with two-piece plunger spring plate and damper chamber |
| 01/07/2004 | CN2597667Y Light temporary supporting device |
| 01/07/2004 | CN1133795C Sand pressure release double arch semi-enclosed support technology for soft brenk roc kmining roadway |
| 12/31/2003 | CN2596014Y Single hydraulic supporting coloumn |
| 12/24/2003 | CN2594466Y Self-control caving coal hydraulic support |
| 12/24/2003 | CN1131926C Hydraulic prop system |
| 12/03/2003 | CN2589679Y Iron duck bill plate |
| 12/03/2003 | CN2589678Y Iron plate hat |
| 12/02/2003 | US6655877 Yielding column |
| 11/19/2003 | CN2586816Y Soft-rock roadway closed type U-shape steel retractable support |
| 11/19/2003 | CN2586815Y High-level, media-level and low-level top coal hydraulic support for expansion link full protective tail boom |
| 11/12/2003 | CN2585978Y Column dismounting appts. for general hydraulic support |
| 10/28/2003 | US6637159 Load-bearing pressurized liquid column |
| 10/22/2003 | CN2581694Y Small curvature arch chock |
| 10/16/2003 | WO2003085234A1 Inflatable mine support pack |
| 10/16/2003 | US20030194280 Yielding column |
| 10/15/2003 | CN2580114Y Arc shape prop shoe for mine single prop |
| 10/01/2003 | CN2576964Y Two-cylinder, two-stretching monomer hydraulic prop |
| 09/24/2003 | CN2575303Y Rubber damping block for fanjet fan vanes |
| 09/17/2003 | CN2573679Y Single hydraulic prop |
| 09/10/2003 | CN2572003Y Hydraulic assembling platform of mine hydraulic support |
| 09/10/2003 | CN2572002Y Prop for coal seam drift |
| 09/09/2003 | US6615705 Hydraulic cylinder |
| 09/03/2003 | CN2570459Y Chock-shield hydraulic support having cover beams |
| 09/02/2003 | US6612803 Positioning cradle for mine roof supports |
| 08/28/2003 | US20030161693 Yieldable prop |
| 08/27/2003 | CN2568814Y Skate |
| 08/21/2003 | WO2003069124A1 A method of dewatering a solid particulate material |
| 08/07/2003 | DE20307245U1 Return valve for a hydraulic cylinder has a connector (5-9) which attached to the valve housing (3) in the hydraulic cylinder (2) in a fixed position parallel to the axis (16) of the cylinder |
| 08/06/2003 | CN2564754Y Hydraulic one-way valve |
| 07/29/2003 | CA2257865C Yieldable mine roof support |
| 07/17/2003 | DE10223804C1 Armouring for underground props has 3-part construction assembled from side armouring mats and central armouring mat |
| 07/02/2003 | CN2558769Y Sleeve mine single hydraulic prop |
| 06/18/2003 | CN2556367Y Steel pipe fastening friction pressure device |
| 06/17/2003 | CA2090947C Mine prop headboard |
| 05/30/2003 | WO2003044323A1 Mine support |
| 05/28/2003 | CN2553113Y Towing beam synchronous moving combined support |
| 05/06/2003 | US6558085 Providing an outer container arranged in use to define a base |
| 04/23/2003 | CN1412415A Rubber-plastics combined type internal liquid-charging self-expanding piston head |
| 04/17/2003 | WO2003031773A2 Lite mine roof support crib and method |
| 04/16/2003 | CN2545369Y Support frame of prop sharing floor |
| 04/15/2003 | US6547492 Inflatable mine support |
| 04/10/2003 | US20030068204 Lite mine roof support crib and method |
| 03/19/2003 | CN2540509Y 500l large flow long service life anti-pollution hydraulic support plane relief valve |
| 02/27/2003 | DE20215045U1 Method for producing modular hollow elements for retaining barriers and for foundation supports has a custom made mesh shape with inner fabric lining to contain concrete or other filling |
| 02/20/2003 | WO2002042573A3 Method and apparatus for pre-stressing a roof support |
| 01/08/2003 | CN2530039Y Single support piston |
| 12/31/2002 | US6499916 Compressible support column |
| 11/27/2002 | CN2522620Y Mining monoblock hydraulic prop |
| 10/17/2002 | WO2002044100A3 Cement-containing compositions and method of use |
| 10/03/2002 | US20020139077 Pyramid crib blocks |
| 09/26/2002 | US20020136607 Support element for underground underworkings |
| 09/11/2002 | CN1090709C Joint method for telescopic U-steel overlap sections of support |
| 08/06/2002 | US6428109 Mining machine with sliding cutting tool assembly |