| Patents for E21B 1 - Percussion drilling (2,080) |
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| 03/05/2015 | US20150060139 Two-Port Percussion Mole |
| 02/24/2015 | US8960325 Free-mass and interface configurations of hammering mechanisms |
| 02/11/2015 | CN204152421U 煤矿硬岩钻进水压驱动冲击钻具 Hydraulic drive mine hard rock drilling impact drill |
| 02/04/2015 | CN104334816A 具备多个凿条的破碎锤用凿组件 Have multiple chisel hammer chisel bar assembly |
| 02/04/2015 | CN104329019A 一种高频钻井冲击器 A high-frequency drilling impactor |
| 02/04/2015 | CN103291209B 单拐臂超越冲击钻机及应用方法 Beyond the impact of a single crank arm rig and application methods |
| 02/04/2015 | CN102817554B 具有泥浆分流和侧壁密封功能的液动锤 Hydraulic hammer with a side wall of mud and sealing function shunt |
| 02/04/2015 | CN102587824B 高风压冲击器 High pressure impactor |
| 02/03/2015 | CA2784979C Air hammer for a boring machine |
| 01/29/2015 | WO2015010977A1 Polyarylethersulfone oil and gas recovery articles, method of preparation and method of use |
| 01/21/2015 | CN204113105U 阀式高能液动潜孔锤 Energy hydraulic valve DTH |
| 01/21/2015 | CN204113104U 一种带延长结构的电锤 An extension of the structure with a hammer |
| 01/21/2015 | CN104295228A 压差往复式钻井冲击器及方法 Pressure impactor reciprocating drilling and method |
| 01/21/2015 | CN102108834B 凿岩机 Drilling machine |
| 01/15/2015 | WO2015003215A1 Dynamic seal tube for a down hole hammer drill |
| 01/13/2015 | CA2669947C Rock drilling method and rock drilling machine |
| 01/07/2015 | CN204082797U 一种凿岩机用空气滤清装置 One kind of rock drill with air filtration system |
| 01/07/2015 | CN204081986U 液压切削式冲击钻机 Hydraulic cutting Impact Drill |
| 01/07/2015 | CN104265154A 一种新型潜孔冲击器 A new DTH hammer |
| 01/06/2015 | CA2679933C High productivity core drilling system |
| 12/31/2014 | CN204061362U 高效液压凿岩机 Efficient hydraulic rock drill |
| 12/31/2014 | CN204060501U 一种新型潜孔冲击器 A new DTH hammer |
| 12/31/2014 | CN204060500U 一种冲击式气枪震源掘进装置 An impact-type air gun source driving device |
| 12/24/2014 | CN204040919U 一种钻机防护装置 One kind of rig guard |
| 12/24/2014 | CN204040907U 一种油田用振动钻井工具 One kind of oilfield drilling tool with vibration |
| 12/24/2014 | CN104234620A 钻岩机、旋转套筒和润滑的方法 Rock drilling machine, rotary sleeve and lubrication methods |
| 12/17/2014 | CN204024544U 一种空芯冲粧锤 A Space core makeup hammer punch |
| 12/10/2014 | CN204002538U 液压凿岩机 Hydraulic rock drill |
| 12/10/2014 | CN204002537U 一种变频电动凿岩机 One kind of variable frequency electric drilling machine |
| 12/10/2014 | CN204002536U 三件式钻具 Three-piece drill |
| 12/09/2014 | US8905157 Control system, rock drill rig and control method |
| 12/09/2014 | US8904990 Dwell cycle crank with rollers |
| 11/27/2014 | US20140345895 Air supplying method for cluster hammer having nozzles installed |
| 11/20/2014 | US20140338978 Wellbore percussion adapter and tubular connection |
| 11/13/2014 | US20140332278 Extended reach drilling |
| 10/07/2014 | US8854045 Electronics for a thin bed array induction logging system |
| 09/30/2014 | US8844649 System and method for steering in a downhole environment using vibration modulation |
| 09/03/2014 | DE202014102887U1 Drucküberwachungsvorrichtung Pressure monitoring device |
| 09/03/2014 | DE202014102886U1 Vorrichtung zur Drucküberwachung A device for monitoring the pressure |
| 08/13/2014 | CN203769642U 对液压凿岩的定位速度进行调节控制的油路系统 Hydraulic rock drill positioning speed adjustment control oil system |
| 08/13/2014 | CN103982131A 一种可调频超声波共振凿岩机及使用方法 One kind of adjustable frequency ultrasonic resonance drilling machine and method of use |
| 08/12/2014 | US8800690 Down-the-hole drill hammer having a reverse exhaust system and segmented chuck assembly |
| 08/12/2014 | US8800678 Oil lubricant |
| 08/06/2014 | CN203756021U 一种打洞机 One kind Excavators |
| 07/31/2014 | WO2014116400A1 Variable volume accumulator |
| 07/30/2014 | CN103953279A 一种往复冲击潜孔锤钻井工具 An iterative and impact DTH Drilling Tools |
| 07/30/2014 | CN103953278A 一种凿岩机的手动锁止装置 Manual locking device of a drilling machine |
| 07/29/2014 | US8789617 Hydraulic pick |
| 07/23/2014 | CN203729858U 矿山凿孔机 Mine perforator |
| 07/22/2014 | US8783378 Auto hammer |
| 07/22/2014 | US8783377 Hand-held power tool, particularly a rotary and/or chisel hammer, having a vibration absorbing unit |
| 07/17/2014 | WO2014013466A3 Cushioning slides |
| 07/16/2014 | CN203716837U 凿岩机防卡钎液压控制系统 Anti-drilling machine card solder hydraulic control system |
| 07/16/2014 | CN203716836U 一种凿岩机冲击压力远控液压回路 One kind of shock pressure drilling machine remote control hydraulic circuit |
| 07/16/2014 | CN103925251A 一种阀控与泵控切换控制阀组 One kind of valve-regulated pump control switch control valve |
| 07/09/2014 | CN203701955U 一种车体风动凿岩机 One kind of vehicle pneumatic drills |
| 07/09/2014 | CN203701939U 凿岩机的钻杆推进装置 Drill rock drill propulsion device |
| 07/09/2014 | CN102828690B 步履式双回旋潜孔钻机 Walking double roundabout submersible drilling rig |
| 07/09/2014 | CN102536109B 一种凿岩机 One kind of rock drill |
| 07/03/2014 | WO2014104608A1 Shock absorbing device for hydraulic rotary hitting apparatus |
| 07/03/2014 | US20140182939 Percussion drill bit with conical cutting elements |
| 07/03/2014 | US20140182938 Piston strike face and bit interface for percussion hammer drill |
| 07/03/2014 | DE102010022330B4 Schlagwerk und Verfahren zum Betrieb Percussion and method of operation |
| 07/02/2014 | CN203685013U 一种一次切槽的装置 A primary means of slots |
| 07/02/2014 | CN102787801B 一种冲击式打孔机 An impact-type drilling machine |
| 07/02/2014 | CN102439256B 液压破碎机 Hydraulic Crusher |
| 06/25/2014 | CN203669727U 频率可调的机械冲击装置 Adjustable frequency mechanical shock devices |
| 06/19/2014 | WO2014092244A1 Shock-absorbing type vibration breaker |
| 06/18/2014 | CN203655144U 一种全液压冲击式露天凿岩钻机 A fully hydraulic impact surface drill rigs |
| 06/18/2014 | CN203655143U 一种凿岩机的支架调节装置 One kind of rock drill bracket adjustment device |
| 06/18/2014 | CN102686819B System for preventing idle blow and adjusting hitting power of breaker |
| 06/11/2014 | CN103850645A YYT29A machine head |
| 06/05/2014 | WO2014084776A1 Device in a rock drilling machine and rock drilling machine |
| 06/05/2014 | WO2014084772A1 Percussion device for a hydraulic rock drilling machine, method of operation of a percussion device and hydraulic rock drilling machine including a persussion device |
| 06/04/2014 | CN203626596U 一种水下液压凿岩设备 Underwater hydraulic drilling equipment |
| 05/29/2014 | US20140144705 Hydraulic Percussion Apparatus and Method of Use |
| 05/28/2014 | CN203614023U 一种全液压履带式凿岩钻机液压控制系统 A fully hydraulic crawler drilling rig hydraulic control system |
| 05/28/2014 | CN103821452A 一种高频低幅轴向冲击器 A high-frequency low-amplitude axial impactor |
| 05/28/2014 | CN103821451A 凿岩机防卡钎液压控制系统 Anti-card borer drilling machine hydraulic control system |
| 05/21/2014 | CN203604295U 一种液压钻臂左右平动机构 A hydraulic boom around translational mechanism |
| 05/21/2014 | CN203604294U 一种液压钻臂平动机构 A hydraulic boom translational mechanism |
| 05/21/2014 | CN203603755U 一种用于高风压钻孔作业的导向冲击器 A high-pressure impactor for guiding drilling operations |
| 05/20/2014 | US8727034 Rotary power tool operable in first speed mode and a second speed mode |
| 05/20/2014 | CA2742024C Pressure reversing valve assembly for a down-the-hole percussive drilling apparatus |
| 05/20/2014 | CA2660101C Pneumatic impact piercing tool |
| 05/15/2014 | US20140131100 Electronically activated jarring with traveling release |
| 05/14/2014 | CN203594352U 地质勘探用冲压机省能设备 Geological exploration stamping machine energy-saving equipment |
| 05/14/2014 | CN103790517A 钻井方法和利用声波式钻井头的声波钻井方法 Drilling method and sonic drilling method uses sound waves drilling head |
| 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 |
| 05/08/2014 | WO2014070072A1 Damping device for percussion device, percussion device, rock drilling machine and method of damping in a rock drilling machine |
| 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 | CN203584296U 一种击打力可调节的击振器 An impact force can be adjusted to hit the oscillator |
| 05/07/2014 | CN203584295U 一种液动冲击器 One kind of hydraulic impactor |
| 05/07/2014 | CN103774983A 射流式扭转冲击钻井工具 Reversing the impact of jet drilling tool |
| 05/07/2014 | CN101821471B 磁锤 Magnetic hammer |
| 04/30/2014 | CN203570197U Cut-through impactor |
| 04/30/2014 | CN203570196U Slurry pumping type well sinking device |
| 04/23/2014 | CN102493761B Hydraulic rock digger |
| 04/22/2014 | US8704507 Method for determining usage rate of breaking hammer, breaking hammer, and measuring device |
| 04/16/2014 | EP2718064A1 Percussion device of rock breaking device and method for controlling percussion device |