| Patents for E21B 6 - Drives for drilling with combined rotary and percussive action (930) |
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| 02/03/2015 | CA2744147C Rock drilling machine and axial bearing module |
| 02/03/2015 | CA2654496C Hydraulic rotary percussive device of the drill type |
| 12/31/2014 | CN103032023B 螺旋式桩机旋转冲击破碎头装置 Spiral pile rotary impact crusher head unit |
| 12/24/2014 | CN104234621A 转阀液压凿岩机 Rotary valve hydraulic rock drill |
| 12/18/2014 | US20140367133 Hydraulic rotator converter for a hydraulic impact hammer and method |
| 12/16/2014 | US8910729 Method and apparatus for drilling large-diameter hole in ground |
| 12/11/2014 | US20140360743 Rock drilling machine, rotating sleeve and method for lubrication |
| 10/23/2014 | US20140311807 Reverse circulation hammer spline arrangement improvements |
| 10/07/2014 | US8854045 Electronics for a thin bed array induction logging system |
| 09/16/2014 | CA2631313C Top drive drilling apparatus |
| 09/02/2014 | CA2630793C Top drive drilling apparatus |
| 08/28/2014 | US20140238712 Drive device and method for operating a drive device |
| 07/31/2014 | DE102013103674B3 Hydraulischer Bohrhammer, Anordnung mit hydraulischem Bohrhammer und Trägergerät sowie Verwendung eines hydraulischen Bohrhammers A drill, hammer drill assembly with hydraulic and carriers as well as use of a hydraulic hammer drill |
| 07/23/2014 | CN103939010A 冲击式钻井设备 Impact Drilling Equipment |
| 07/09/2014 | CN102777122B 一种冲击式螺杆钻具 An impact screw drill |
| 06/25/2014 | CN203669736U 旋转冲击式液压锚杆钻机 Rotary impact of hydraulic bolt rig |
| 06/25/2014 | CN203669735U 一种复合动力桩工钻机 A composite power Piling Rig |
| 06/25/2014 | CN102536114B 机械式井下吸振冲击钻井工具 Mechanical vibration absorbing shock downhole drilling tool |
| 06/25/2014 | CN102409974B 振动挤压式钻孔机 Vibration extrusion Drills |
| 06/19/2014 | WO2014092387A1 Hydraulic rotating impact apparatus |
| 06/11/2014 | CN102720430B Coaxial integrated gyration and excitation drive device of drilling tools |
| 06/04/2014 | CN203626601U 用于岩石破碎试验的气动冲击旋转器 Pneumatic test for rock crushing impact rotator |
| 05/28/2014 | CN203614029U 一种涡轮扭转冲击发生器 A turbine generator torsional shock |
| 05/21/2014 | CN103806833A 一种高速破岩钻具 A high speed broken rock drill |
| 05/20/2014 | CA2742024C Pressure reversing valve assembly for a down-the-hole percussive drilling apparatus |
| 05/14/2014 | CN103174380B 一种弹簧蓄能激发式旋转冲击钻井装置 One kind of spring accumulator excited rotary percussion drilling device |
| 05/14/2014 | CN102213074B 一种回转冲击式凿岩钻机及双层钻杆机构 One kind of rotary percussion drilling rig and double drill agencies |
| 05/07/2014 | CN203584301U 引孔设备 Cited hole equipment |
| 05/07/2014 | CN203584297U 一种液压凿岩机的钎杆缓冲定位装置 Rod cushion positioning device for a hydraulic rock drill |
| 05/07/2014 | CN101821471B 磁锤 Magnetic hammer |
| 05/01/2014 | WO2014065797A1 Torque transfer mechanism for downhole drilling tools |
| 04/30/2014 | CN101765694B Method and device for controlling a rock drill rig |
| 04/16/2014 | CN103726786A Power mechanism of rotary impact type hydraulic anchor drilling machine |
| 04/16/2014 | CN103726785A Rotary drilling rig with hydraulic breaker device |
| 04/02/2014 | CN203515312U Jackdrill with hexagonal drill rod with rubber coakeslet shank collar capable of being cooled |
| 04/02/2014 | CN102155159B Hammer rotating mechanism |
| 03/27/2014 | US20140083775 Rotary impact drill and double-layer drilling rod mechanism |
| 03/26/2014 | CN203499551U Rotary pile drilling machine hole bottom hydraulic high-frequency percussion drill |
| 03/26/2014 | CN103670269A Turbine torsional impact generator |
| 03/26/2014 | CN102425370B Hole bottom oil pressure motor lithoclast combined power drilling tool construction method and device |
| 02/27/2014 | US20140054090 Mechanical force generator for a downhole excitation apparatus |
| 02/26/2014 | CN103603595A Hydraulic percussion rotary reverse circulation drilling device |
| 02/19/2014 | CN203441357U Refit down-the-hole drill |
| 02/13/2014 | US20140041943 Drilling motor valve and method of using same |
| 01/29/2014 | CN103541655A Drill rod buffer positioning device of hydraulic rock drill |
| 01/21/2014 | CA2780885C Vibrating downhole tool |
| 01/15/2014 | CN103510560A Spinning groover |
| 01/08/2014 | EP2681408A1 Mechanical force generator for a downhole excitation apparatus |
| 12/25/2013 | CN103470181A Rock drilling device propulsion one-way delay response method and device for realizing method |
| 12/25/2013 | CN102223986B Rock drilling machine and axial bearing module |
| 12/25/2013 | CN102076931B Bottom-hole assembly, and method and system for transmitting data from bottom-hole assembly |
| 12/18/2013 | CN102409972B Multi-bit convolution punching/tamping engineering groover |
| 12/11/2013 | CN102373881B Hydraulic impact bearing mechanism for hydraulic rock drill |
| 12/11/2013 | CN102337839B Directionally rotating type air hammer |
| 12/04/2013 | CN203321314U Pneumatic elastic extrusion type anchor drilling machine |
| 11/27/2013 | CN203308379U Drilling machine for pile work |
| 11/27/2013 | CN103410439A Rock drilling machine capable of cooling rubber cokeslet steel collar type hexagonal drill rod |
| 11/20/2013 | CN203296692U Twisting-pressing double-punching tool |
| 11/06/2013 | CN203271586U Impact rotary drilling rig |
| 11/06/2013 | CN203271585U Three-way impact tool |
| 10/30/2013 | CN203257326U Pneumatic anchor rod jack drill |
| 10/30/2013 | CN103375133A Down-hole displacement percussion drilling tool |
| 10/30/2013 | CN103375132A Down-hole rotary impact type drilling tool |
| 10/09/2013 | CN203229944U Rock-socketed prestressed pipe pile grouted after being embedded in pile bottom through spinning and rocking drilling |
| 10/02/2013 | CN203223170U Percussion drill hammerhead applied to drilling for pile foundation under inclined rock geological condition |
| 09/25/2013 | CN103321571A 旋挖钻机 Rotary Drilling Rig |
| 09/25/2013 | CN103321570A Downhole drill for granite cutting guide hole breaking and application method thereof |
| 09/18/2013 | CN203201461U Pneumatic anchor drilling machine for coal mine |
| 09/11/2013 | CN203188906U Rapid entering-rock type rotary drilling rig |
| 09/11/2013 | CN103291215A Drive device and method for driving a drill rod |
| 09/04/2013 | EP2634363A1 Drive device and method for driving a drilling rod |
| 09/04/2013 | CN103277044A SDL pile work drilling method and pile work drilling machine specially used for implementing same |
| 08/28/2013 | CN102913130B Full-hydraulic rock-drilling excavator using hydraulic excavator for production |
| 08/21/2013 | EP2627851A1 Drill assembly |
| 08/21/2013 | CN203145005U Pile-forming device for steel pipe retaining wall superstrong rock-socketed cast-in-place pile |
| 08/21/2013 | CN103261558A Drill assembly |
| 08/14/2013 | DE102012201952A1 Pneumatic rammer device for drilling and/or impact hammer, has sealing elements for sealing pressure chamber in guide tube, and pressurization units for applying pressure on pressurization sides of sealing elements |
| 08/14/2013 | CN102392598B Hydraulic vibration impactor and pile driving power head comprising same |
| 08/07/2013 | CN203114166U Medium-and-large hole type engineering driller |
| 07/31/2013 | CN203097711U Rotary impact breaking head device of spiral piling machine |
| 07/25/2013 | WO2013109182A1 Flushing liquid sealing device in a rock drilling machine, method of producing it, flushing housing and rock drilling machine |
| 07/24/2013 | EP2616623A1 Hydraulic rotary percussion apparatus for boring mine holes |
| 07/10/2013 | EP2611579A1 Hydraulic impact mechanism for use in equipment for treating rock and concrete |
| 07/04/2013 | US20130168153 Hydraulic rotary percussive device intended to drill boreholes |
| 07/04/2013 | US20130168080 Radial vibrational apparatus |
| 07/03/2013 | CN203035078U Impacting and rotating bolting machine |
| 06/27/2013 | WO2013095164A1 Extended reach drilling |
| 06/26/2013 | CN203022625U Full-hydraulic rock drilling excavator produced by means of hydraulic excavator |
| 06/26/2013 | CN103174380A Spring energy-storage inspiring type rotary percussive drill device |
| 06/19/2013 | CN101451424B Drilling tool with dust collector |
| 06/13/2013 | WO2013085822A2 Resonant extractor system and method |
| 06/13/2013 | US20130146360 Resonant extractor system and method |
| 06/13/2013 | CA2858548A1 Resonant extractor system and method |
| 06/12/2013 | CN202990851U Screw type high-frequency percussion drilling tool |
| 06/12/2013 | CN202990850U Column type pneumatic anchor hole drilling machine |
| 06/12/2013 | CN103147686A Three-way impact tool |
| 06/12/2013 | CN102003143B Multidirectional hydraulic rock drilling machine with integrated drives |
| 06/05/2013 | CN202970455U Gadder swing mechanism |
| 06/05/2013 | CN202970454U Driving mechanism for pneumatic drill |
| 06/05/2013 | CN202970453U Inner cylinder rotary type water-pressure rock drill using medium and low-pressure as power drive |