| Patents for E21B 1 - Percussion drilling (2,080) |
|---|
| 07/18/2012 | CN102587824A High-wind-pressure impactor |
| 07/18/2012 | CN102587823A All-directional reversing device for rock drill |
| 07/18/2012 | CN101519959B Drilling touching shocking integrative prospecting instrument and use method thereof |
| 07/11/2012 | CN202325224U 手持式气动凿岩机 Hand-held pneumatic rock drill |
| 07/11/2012 | CN202325223U Hole puncher used in building construction process |
| 07/11/2012 | CN202325222U Booster of electric hammer |
| 07/11/2012 | CN102561947A Vibroflotation lead hole construction method based on pneumatic drill slag stirring |
| 07/11/2012 | CN102561937A Adjustable rock drilling control system of hydraulic rock drilling machine |
| 07/11/2012 | CN102561936A Rock drilling control system of hydraulic rock drilling machine |
| 07/11/2012 | CN102561935A Positioning control system of hydraulic rock drilling machine |
| 07/10/2012 | US8215414 Rock drilling method and rock drilling machine |
| 07/10/2012 | CA2505252C Method and apparatus for varying the density of drilling fluids in deep water oil drilling applications |
| 07/04/2012 | CN102536109A Rock drilling impact pressure regulating device and rock drilling machine with same |
| 07/03/2012 | US8210274 Vibration hammer |
| 06/28/2012 | WO2012087050A2 Apparatus and method for controlling breaker beats of heavy construction machinery |
| 06/27/2012 | CN101761309B Stoper |
| 06/21/2012 | US20120152576 Extra area down-hole hammer apparatus and method |
| 06/20/2012 | CN102505724A Hole guiding device and hole guiding method for bad ground |
| 06/14/2012 | US20120145422 Rock claw for demolition hammer |
| 06/13/2012 | CN102493761A Hydraulic rock digger |
| 06/13/2012 | CN101489729B Method and device for rock drilling |
| 06/06/2012 | CN202265816U 一种用于补水强夯处理地基的冲孔装置 A punching apparatus for treating soil compaction water |
| 06/05/2012 | CA2470913C Method and means for processing oil sands while excavating |
| 05/30/2012 | CN202250086U Machine for cutting through hills |
| 05/30/2012 | CN202249754U Pneumatic down hole hammer with drilling and coring device |
| 05/30/2012 | CN202249734U Vertical perforating air-leg rock drill |
| 05/30/2012 | CN202249733U Hydraulic device of drill |
| 05/30/2012 | CN202249732U Impact type power head |
| 05/16/2012 | CN202220549U Pneumatic rock drill with rebound absorption device |
| 05/16/2012 | CN102454360A Hydraulic jet impacter |
| 05/16/2012 | CN102454359A Integral casting cylinder block and manufacturing method |
| 05/09/2012 | CN102444381A Rock drill piston rod |
| 05/03/2012 | WO2012058027A2 Method and system for fracturing a formation |
| 05/03/2012 | WO2012057432A1 Ground drilling hammer and sleeve thereof |
| 05/03/2012 | CA2812801A1 Method and system for fracturing a formation |
| 05/02/2012 | CN102439256A Hydraulic breaker |
| 05/02/2012 | CN102434089A Impacter for drilling large-aperture rock hole |
| 04/25/2012 | CN202202804U 一种定向旋转式空气锤 As a directional rotary air hammer |
| 04/18/2012 | EP2441914A2 Hydraulic breaker |
| 04/18/2012 | CN102418344A 喷射器、钻头组合结构及组合钻具 Injectors, the structure and composition of the drill bit combination |
| 04/11/2012 | CN202187707U 冲击钻钻头装置 Impact drill bit means |
| 04/11/2012 | CN102409967A 一种改进的液压冲击钻 An improved hydraulic percussion drill |
| 04/11/2012 | CN102409966A 一种液压冲击钻 A hydraulic impact drill |
| 04/11/2012 | CN102409965A 一种液压冲击钻 A hydraulic impact drill |
| 04/05/2012 | WO2011054965A3 System for exploration of subterranean structures |
| 04/04/2012 | EP1565623B1 A locking mechanism |
| 04/04/2012 | EP1563145B1 An improved device |
| 04/04/2012 | CN202181853U 一种支腿式凿岩机的换向操纵机构及一种支腿式凿岩机 One kind of leg rock drill commutation control mechanism and an Effective leg rock drill |
| 04/04/2012 | CN202181850U 一种带限角装置的气腿式凿岩机 A tape device limit angle Air-leg rock drill |
| 03/28/2012 | CN202176259U 一种双电锤组合打眼装置 A dual combination hammer drill unit |
| 03/28/2012 | CN202176258U 液压凿岩机及用于该凿岩机的冲击器和均流阀 Hydraulic rock drill and for the impact of the drilling machine and both valve |
| 03/27/2012 | US8141660 Excavator apparatus for underground excavation |
| 03/22/2012 | US20120067606 Hydraulic breaker |
| 03/21/2012 | EP2431564A1 Method for drilling and completing wells |
| 03/21/2012 | EP2069602B1 Percussion device and rock drilling machine |
| 03/21/2012 | CN202170761U 一种钎卡机构及一种凿岩机 A flux card agencies and one kind of rock drill |
| 03/20/2012 | CA2654461C Device for channeling solids and fluids within a reverse circulation drill |
| 03/15/2012 | WO2012031311A1 Improved rock drill |
| 03/15/2012 | CA2810914A1 Improved rock drill |
| 03/14/2012 | EP1883503B1 Method for producing impulses in a percussive tool |
| 03/07/2012 | CN202157743U 落锤式准位击打打洞器 Level drop hammer hitting punch |
| 03/01/2012 | WO2012026571A1 Fluid pressure hammering device |
| 02/21/2012 | US8118116 Elongated percussive rock drilling element, a method for production thereof and a use thereof |
| 02/16/2012 | WO2012021604A1 Composite seal for a hydraulic hammer |
| 02/16/2012 | WO2012020058A2 An attachment for percussion drill tools |
| 02/16/2012 | US20120037389 Composite Seal for a Hydraulic Hammer |
| 02/08/2012 | CN202140012U 具辅助冲击装置的冲锤结构 Impact hammer structure with an auxiliary device |
| 02/08/2012 | CN202140011U 回填夹渣土层降水井点成孔装置 Backfill sediment layer sandwiched into a hole means well point precipitation |
| 02/08/2012 | CN101705784B 孔底电动冲击器控制系统 Bottom of the hole electric shock control system |
| 02/01/2012 | CN202131972U 一种顶板植筋打眼快捷工具 One kind of roof anchorage drill Shortcut |
| 02/01/2012 | CN102337839A Directionally rotating type air hammer |
| 01/19/2012 | WO2011149363A4 Enhanced vibrational or hammering apparatus |
| 01/19/2012 | WO2011149197A3 Variable excavation hammer for expanding the leading end of a pile |
| 01/18/2012 | CN202117571U Movable type tunnel top drilling machine |
| 01/18/2012 | CN202117555U Hammer head rotation mechanism |
| 01/18/2012 | CN102322217A Larger-diameter bored pile stratum section secondary pore-forming method |
| 01/17/2012 | US8096368 Fence post installation and anchoring system |
| 01/11/2012 | CN202108413U Crushing mechanism |
| 01/10/2012 | CA2491903C System and method for automating or metering fluid recovered at a well |
| 01/05/2012 | WO2012002827A1 Radial vibrational apparatus |
| 01/05/2012 | CA2803288A1 Radial vibrational apparatus |
| 01/03/2012 | CA2476080C Mono-diameter wellbore casing |
| 12/28/2011 | CN202090825U 液压钻液压锤一体机 Hydraulic hydraulic hammer drill machine |
| 12/20/2011 | US8080015 Impacting device and method |
| 12/14/2011 | CN101346527B 减震装置和包括该减震装置的钻机 Shock absorbers and the damping device including rig |
| 12/13/2011 | CA2601611C Percussion adapter for positive displacement motors |
| 12/07/2011 | EP2392765A2 Impact drilling machine and operating method |
| 12/07/2011 | CN202064841U 一种免梯冲击钻升降架 A no-impact drill lifting frame ladder |
| 12/04/2011 | CA2742024A1 Pressure reversing valve assembly for a down-the-hole percussive drilling apparatus |
| 12/01/2011 | WO2011149363A1 Enhanced vibrational or hammering apparatus |
| 12/01/2011 | WO2011149197A2 Variable excavation hammer for expanding the leading end of a pile |
| 12/01/2011 | DE102010022330A1 Schlagwerk und Verfahren zum Betrieb Percussion and method of operation |
| 12/01/2011 | CA2800033A1 Enhanced vibrational or hammering apparatus |
| 11/30/2011 | CN202055759U 防渗墙工程小墙施工用重锤 Cut-off wall construction project with a small wall hammer |
| 11/30/2011 | CN202055747U 打孔机 Punch |
| 11/23/2011 | CN202047742U Rotary percussion type rock drilling machine and double-layer drill rod mechanism |
| 11/22/2011 | US8061437 Nail gun with rapidly attachable and detachable magazine assembly |
| 11/22/2011 | US8061435 System for mounting a pile driver |
| 11/22/2011 | US8061434 Percussion device |
| 11/16/2011 | CN202039769U Crushing mechanism with air inlet pipe |