Patents for E21B 1 - Percussion drilling (2,080)
04/2014
04/16/2014EP2718063A1 Percussion device of rock breaking device and method for controlling percussion device
04/16/2014CN203547523U Down-hole hammer for high-air-pressure drilling machine drilling work
04/16/2014CN203547522U Down-hole hammer
04/16/2014CN203547521U Automatic rammed bulb pile heavy hammer hook
04/16/2014CN103726783A Novel sleeve valve type hydraulic impacting mechanism
04/16/2014CN102505724B Hole guiding device and hole guiding method for bad ground
04/15/2014CA2777356C Down-the-hole drill hammer having a reverse exhaust system and segmented chuck assembly
04/09/2014EP2715030A1 Downhole sinusoidal vibrational apparatus
04/09/2014CN203531901U Multi-functional hydraulic rock drilling shoveling device
04/09/2014CN203531743U Rock drill
04/02/2014CN203515307U Hydraulic system for retraction of hydraulic hammer piston rod
04/02/2014CN103696681A Support regulating device of rock drill
03/2014
03/27/2014US20140083778 Thread device, thread joint and drill string component for percussive rock drilling
03/26/2014CN203499552U High-wind-pressure impactor
03/26/2014CN203499551U Rotary pile drilling machine hole bottom hydraulic high-frequency percussion drill
03/26/2014CN103670263A Novel shake-proof noise-reduction rock drill
03/19/2014CN203488104U Percussion drill impact hammer for drilled pile drilling construction in beaded type karst area
03/19/2014CN203488090U Punching device for burying earthing electrode of electric transmission line
03/19/2014CN203488089U Hydraulic impact device
03/18/2014CA2647838C Impact adapter for a rock drill
03/13/2014WO2014037619A2 Method for surveying drill holes, drilling arrangement, and borehole survey assembly
03/12/2014EP2704880A1 A striker member, and a drilling machine comprising a striker member
03/12/2014CN203476853U Nitrogen bag of YYT29A hydraulic rock drill
03/12/2014CN203476852U Nitrogen bag of QL29A hydraulic rock drill
03/12/2014CN203476200U Hydraulic rock drill
03/12/2014CN102628335B Percussion drill notching press
03/05/2014CN102606065B Lengthened drilling machine drilling arm convenient for transportation
02/2014
02/19/2014CN203441410U Rope impact drilling tool capable of adjusting hydraulic pressure
02/19/2014CN102691475B Energy-saving percussion drill
02/19/2014CN102561936B Rock drilling control system of hydraulic rock drilling machine
02/19/2014CN102561935B Positioning control system of hydraulic rock drilling machine
02/19/2014CN102418344B Injector, drill bit combination structure and combination drilling tool
02/13/2014WO2014023085A1 Multi-point guidance support method for reciprocating impact machine and reciprocating impact machine device having multi-point guidance support that implements said method
02/12/2014EP2694252A1 Device and method for rock- and concrete machining
02/12/2014EP2694251A1 Device for rock- and concrete machining
02/12/2014CN103573183A Modified pneumatic percussion drill
02/12/2014CN103573182A Piston guide sleeve type valveless double-cylinder down-hole hammer
02/11/2014CA2686627C Electrically sequenced tractor
02/04/2014US8640787 Portable post driving apparatus
01/2014
01/29/2014CN203412507U Hexagonal drilling machine
01/29/2014CN103541655A Drill rod buffer positioning device of hydraulic rock drill
01/29/2014CN103541654A Hydraulic impactor
01/22/2014CN203403805U Impact mechanism of pneumatic roof bolter for coal mine
01/16/2014WO2014011178A1 Control line damper for valves
01/16/2014US20140014412 Polycrystalline diamond percussion drill bits using low thrust and torque for application with small diameter drill bits
01/15/2014CN203394342U Soil perforating machine
01/15/2014CN103511822A Method and device for gadder oil injection
01/09/2014WO2014007477A1 Impact body for hydraulic impact device
01/08/2014EP2681408A1 Mechanical force generator for a downhole excitation apparatus
01/08/2014CN103501964A A striker member, and a drilling machine comprising a striker member
01/03/2014WO2014003626A1 Device and method in respect of a rock drilling machine and rock drilling machine
01/01/2014CN103492131A An impact mechanism, rock drill and drill rig comprising such impact mechanism
12/2013
12/26/2013US20130340999 System and method for drilling hammer communication, formation evaluation and drilling optimization
12/25/2013CN203362023U Large diameter drill hammer for filling pile drilling machine
12/25/2013CN102223986B Rock drilling machine and axial bearing module
12/25/2013CN102094576B Crushing mechanism
12/25/2013CN102076931B Bottom-hole assembly, and method and system for transmitting data from bottom-hole assembly
12/25/2013CN101675205B High productivity core drilling system
12/24/2013CA2606788C Percussion device for a rock drilling machine, method for achieving a reciprocating percussion piston movement and rock drilling machine
12/19/2013WO2013187691A1 Hammer raising device
12/18/2013CN203347678U Electro-hydraulic pulse type rock drill
12/18/2013CN103459095A Device for rock- and concrete machining
12/18/2013CN103459094A Device and method for rock and concrete machining
12/18/2013CN103452510A Water pressure-adjustable rope impact drill
12/18/2013CN103452472A Slurry pumping type well drilling device and well drilling method
12/17/2013CA2606791C Valve device for a percussion device and percussion device for a rock drilling machine
12/11/2013CN203329512U Drilling liquid-gas separator for air hammer
12/11/2013CN102337839B Directionally rotating type air hammer
12/04/2013CN103422810A Soil boring machine
12/04/2013CN102454360B Hydraulic jet impacter
12/04/2013CN102454359B Integral casting cylinder block and manufacturing method
12/04/2013CN102134962B Automatic punching pile driver
11/2013
11/28/2013DE102012013409A1 Schlagvorrichtung Impact device
11/27/2013CN103410432A Hexagonal drilling machine
11/20/2013CN203296725U Through type DTH hammer reverse circulation drilling dust collecting device
11/20/2013CN203296693U Drilling tool capable of generating axial impact vibration
11/20/2013CN203296677U Single connecting lever overrunning percussion drill
11/20/2013CN203296676U Combined down-hole hammer drilling tool
11/12/2013US8579042 Battery pack and cordless tool using the same
11/06/2013CN102561947B Vibroflotation lead hole construction method based on pneumatic drill slag stirring
11/06/2013CN102561937B Adjustable rock drilling control system of hydraulic rock drilling machine
11/06/2013CN102134963B Cylinder controlled automatic punching pile machine
10/2013
10/30/2013CN203257324U 重力冲击钻 Gravity Impact Drill
10/30/2013CN203257323U Hydraulic pulley percussion drill
10/23/2013CN203248058U Automatic impactor
10/23/2013CN203248057U Rectangular bored concrete pile hole forming machine
10/23/2013CN203248056U Roller pore-forming machine
10/23/2013CN203248055U Impactor convenient to operate
10/23/2013CN203248054U Hammering construction device
10/22/2013CA2765605C Air hammer optimization using acoustic telemetry
09/2013
09/26/2013WO2013141531A1 Chisel assembly having multiple chisel bars for breaker
09/25/2013CN102155150B Crushing mechanism with gas inlet pipe
09/24/2013CA2607415C Impulse generator, hydraulic impulse tool and method for producing impulses
09/18/2013CN103306284A Construction machine and method for operating same
09/11/2013CN203188898U Radius retention rotation type air hammer
09/11/2013CN103291209A Single-crank-arm surpassing percussion drill and application method
09/04/2013CN203175388U Roof suspension expansion screw puncher
09/04/2013CN103277038A Piston for impacter
09/04/2013CN103277037A Pipe pile leading-hole construction method under boulder cluster geological condition
08/2013
08/28/2013CN203161075U Electromagnetic impacter
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