| Patents for E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection (4,377) |
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| 01/22/2008 | CA2330044C Device for a rock wall |
| 01/17/2008 | US20080014029 Method for assembling a crash-active head support |
| 01/17/2008 | US20080011516 Method for Casing Drilling, Drilling Unit and Adapter Device |
| 01/16/2008 | CN201007215Y Dish shaped drop panel right hand threads anchor rod |
| 01/16/2008 | CN201007214Y Dish shaped drop panel steel belt |
| 01/16/2008 | CN201007213Y Colophony anchoring universal prestressing force recoverable anchor rod |
| 01/10/2008 | US20080008541 Dry Grout Composition And Capsule For Anchoring Reinforcing Member, Dowel Or Anchor Elements |
| 01/09/2008 | EP1623094B1 Controlled expansion of rock bolt |
| 01/09/2008 | EP1623093B1 Method and device for rock bolting |
| 01/09/2008 | CN201003408Y Rotarily mounted type anchoring-bolt |
| 01/09/2008 | CN201003407Y Stretched self-locking slip-preventing anchorage |
| 01/09/2008 | CN201003406Y Down-hole automatic net-connecting device |
| 01/03/2008 | WO2008000015A1 Self drilling rock bolt |
| 01/02/2008 | CN200999621Y Fancy drop panel |
| 01/02/2008 | CN200999620Y Non-metal composite anchored net |
| 01/02/2008 | CN200999222Y Filament binding apparatus |
| 01/02/2008 | CN101096849A Soil body anchor rod construction process and anchor rod member thereof |
| 12/27/2007 | US20070297861 Steel Anchored Reinforced Mine Seal |
| 12/27/2007 | DE102007005540A1 Anchoring material e.g. plastic material mortar, injection bolt for use as rock bolt, has shaft with internal bore comprising static mixer that is fixed in place by profile providing corrugated or ribbed surface on shaft |
| 12/26/2007 | CN200996298Y Cast-steel bell-shaped tray |
| 12/26/2007 | CN200996297Y Square tray of cast steel band reinforcing bar |
| 12/26/2007 | CN200996296Y High-strength decompressing slip-casting rockbolt |
| 12/19/2007 | CN200993024Y Force-measuring resin anchor rod |
| 12/19/2007 | CN100356035C Method and device for drilling a hole and for securing an anchorage in a bore hole |
| 12/18/2007 | CA2220831C Multilayer traction element in the form of a loop |
| 12/12/2007 | CN101086159A Annular extension limit flexible pressurized grouting bolt |
| 12/06/2007 | WO2007140159A1 Tensionable bolt with hanger |
| 12/06/2007 | WO2007137807A1 Fiber-reinforced plastic drilling anchor |
| 12/06/2007 | WO2007137466A1 A random, nondestructiv and dynamic testing apparatus and method of the stressed state of a roof bolt |
| 12/06/2007 | DE102006025248A1 Faserverstärkter Kunststoff-Bohranker Fiber reinforced plastic drilling anchors |
| 12/05/2007 | CN200985798Y Metallic anchor rod combined fastening chuck |
| 12/05/2007 | CN101082281A Method for controlling deformation of surrounding rocks of gallery influenced by overhead mining |
| 12/05/2007 | CN100353020C Aiguille blade assembly, drill pipe containing same and aiguille blade for self-drilling pole or anchor shaft |
| 11/29/2007 | US20070274788 Single Pass Drilling Apparatus, Use of a One-Piece Drill Bit, Method and Rock Bolt for Single Pass Rock Bolting |
| 11/28/2007 | CN200982198Y Composite stainless steel antiseptic anchor bar |
| 11/28/2007 | CN101078350A High-strength integral composite material anchor shaft |
| 11/28/2007 | CN101078212A Anchorage and removing method thereof |
| 11/22/2007 | US20070269274 Rock Bolt |
| 11/21/2007 | CN200978679Y Glass fibre reinforced plastic quick-acting self-locking anchor bolt |
| 11/21/2007 | CN101076651A Method for casing drilling, drilling unit and adapter device |
| 11/15/2007 | US20070264090 Roof Truss Shoe Having Wedge Retention Device and Method of Using the Same |
| 11/15/2007 | DE102006000224A1 Sealing unit for fastening unit, has hollow space e.g. channel, surrounding hole, where connection of space to hole is diametrically arranged to hole, so that filling substance and/or sealing compound flows around passage hole reciprocally |
| 11/14/2007 | CN200975261Y High Intensity composite net for mining |
| 11/14/2007 | CN200975260Y Prestressing force self-fulcra metal rod body for anchoring |
| 11/14/2007 | CN101070760A Self-sensing composite fiber anchor-rod and its making method |
| 11/07/2007 | CN200971786Y Anchorage cable for mine |
| 11/07/2007 | CN200971785Y Button head rod expansion type rock bolt |
| 11/01/2007 | WO2007123668A2 Roof bolt plate |
| 11/01/2007 | US20070253783 Rock Bolting Method and Rock Bolt |
| 10/31/2007 | CN200968220Y 3V and multiple V steel belt for mining |
| 10/31/2007 | CN200968219Y Coal tunnel anchored net support mounting anchor rod sleeve barrel |
| 10/24/2007 | CN200964866Y Steel pipe steel wire anchor for laneway support |
| 10/24/2007 | CN200964865Y Anchor cable fixing device |
| 10/24/2007 | CN100344859C Isostrength conical-section roof bolt |
| 10/23/2007 | US7284933 Square embossed roof and rib plate |
| 10/18/2007 | US20070243026 Detachable anchor bolt mixing head for use in mine roof support systems and method of using same |
| 10/18/2007 | DE19512122B4 Injektionsbohranker Injection drilling |
| 10/17/2007 | CN200961484Y Built-out type anchorage cable and shed type support coupling device |
| 10/17/2007 | CN200961263Y Fixed valve locking type reclaimable rockbolt |
| 10/17/2007 | CN101054901A Bush bulging shell type self-drilling hollow anchor rod |
| 10/11/2007 | WO2007112481A1 A yielding rock bolt |
| 10/10/2007 | CN101050707A High strength bamboo made anchor rod for mine and its producing method |
| 10/04/2007 | US20070231084 Roof bolt plate |
| 10/03/2007 | CN200955404Y W-shape steel-band supporting board device |
| 10/03/2007 | CN200955402Y Probing-beam fixing device in front of anchor-net lane temporary support |
| 09/26/2007 | CN200952402Y Minewell antitearing supporting steel band |
| 09/26/2007 | CN200952401Y Mine anchor |
| 09/26/2007 | CN200952400Y Grouting anchoring-bolt |
| 09/26/2007 | CN200952140Y Hollow roofbolt with air exhauster for upward grouting |
| 09/20/2007 | US20070217869 Rock bolt |
| 09/20/2007 | DE102006011652A1 Hollow rod shear connector for use in e.g. tunnel construction, has adhesive cartridge provided as adhesive paste or as granulate-pressure-adhesive mix with film tube that is provided with hardener spiral |
| 09/19/2007 | CN200949589Y Screw nut for glass fiber full thread roofbolt |
| 09/19/2007 | CN200949472Y Fully recovering anchor bar |
| 09/19/2007 | CN200949471Y Fully recovering anchor bar |
| 09/18/2007 | US7270501 Expandable rock bolt and rock bolting system |
| 09/12/2007 | EP1831500A1 Method for casing drilling, drilling unit and adapter device |
| 09/12/2007 | CN200946520Y Down-hole suspension device for coal mine |
| 09/12/2007 | CN200946519Y Flexible extendible steel/ plastic composite belt |
| 09/12/2007 | CN200946518Y Assembled gasket for preventing loose and reducing friction for anchor rod |
| 09/12/2007 | CN101033692A Coal mine down-hole support parts |
| 09/07/2007 | WO2007098965A1 Tube protection with plugged tube cladding |
| 09/05/2007 | CN200943505Y Loose-preventing composite tray |
| 09/05/2007 | CN200943205Y Anchor bar assembly for earth anchor bar construction |
| 09/05/2007 | CN101029571A Rock bolt and its usage method |
| 08/30/2007 | WO2007096651A1 Injection bolt with a fixed static mixer |
| 08/30/2007 | WO2007095690A1 Stabilising bolt adaptor, grouting injection nut, combined grouting injection nut and stabilising bolt and method for using them |
| 08/30/2007 | CA2640329A1 Injection bolt with a fixed static mixer |
| 08/29/2007 | CN200940494Y Nut combined part of glass fiber reinforced plastic full screw anckor rod |
| 08/29/2007 | CN200940493Y Composite material anckor rod support plate |
| 08/28/2007 | US7261494 Truss shoe |
| 08/23/2007 | US20070196183 Friction stabilizer with tabs |
| 08/23/2007 | DE102007006277A1 Gesteinsanker mit Fließgeometrie für Mörtel Rock bolt with flow geometry for mortar |
| 08/22/2007 | EP1819903A1 An elongate element tensioning member |
| 08/22/2007 | EP1727967B1 Method and device for producing pre-tensioned anchorings |
| 08/15/2007 | EP1818499A1 Apparatus for simultaneously drilling and casing boreholes |
| 08/15/2007 | CN2934577Y Recoverable screw thread anchor rod |
| 08/15/2007 | CN2934576Y Anchoring net for anchoring and supporting |
| 08/15/2007 | CN2934360Y Self-propelling flexible anchoring-bolt |
| 08/15/2007 | CN2934358Y Anticorrosion anchor rod with utricle |
| 08/15/2007 | CN2934357Y Butt-jointing device for anchor cable and borer |