E21B 1/02

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Showing 1 to 20 of 46 results

Patent/Pub #TitleFiling DateIssue/Publication DatePatent Owner
9981370 Breaking deviceJul 01, 15May 29, 18Sandvik Mining and Construction Oy
9938770 Slide valve, percussion device and methodFeb 11, 13Apr 10, 18CONSTRUCTION TOOLS PC AB
9821447 Cushioning slidesJul 18, 13Nov 21, 17TERMINATOR IP LIMITED
9724813 Device for rock and-concrete machiningApr 03, 12Aug 08, 17ATLAS COPCO ROCK DRILLS AB
9709768 Optical connectorDec 16, 14Jul 18, 17STATOIL PETROLEUM AS
9670728 Rotary impact drill and double-layer drilling rod mechanismJul 29, 11Jun 06, 17Not available
9637982 Shock wave modification in percussion drilling apparatus and methodAug 27, 14May 02, 17SANDVIK INTELLECTUAL PROPERTY AB
9624725 Wellbore percussion adapter and tubular connectionApr 15, 14Apr 18, 17Nov Worldwide C.V.
9566702 Hydraulic rotator converter for a hydraulic impact hammer and methodJun 13, 14Feb 14, 17JW TOOLING, LLC
9523245 Shank adaptor with fracture resistant flushing holeSep 01, 14Dec 20, 16SANDVIK INTELLECTUAL PROPERTY AB
9469961 Apparatus for pile-driving or drillingMar 03, 15Oct 18, 16ABI ANLAGENTECHNIK-BAUMASCHINEN-INDUSTRIEBEDARF MASCHINENFABRIK UND VERTRIEBSGESELLSCHAFT MBH
9151116 Portable hard rock drill rigJan 14, 13Oct 06, 15Not available
9016396 Percussion device and rock drilling machineSep 28, 07Apr 28, 15ATLAS COPCO ROCK DRILLS AB
9016404 Ram boring deviceAug 20, 10Apr 28, 15TRACTO-TECHNIK GMBH & CO. KG
8991515 Fail-resistant hammer assembly for a valveless percussive drillJan 31, 08Mar 31, 15J.H. Fletcher & Co.
8960325 Free-mass and interface configurations of hammering mechanismsOct 27, 11Feb 24, 15CALIFORNIA INSTITUTE OF TECHNOLOGY
8904990 Dwell cycle crank with rollersAug 02, 11Dec 09, 14Not available
8316960 Hammer deviceOct 21, 03Nov 27, 12TERMINATOR IP II LIMITED
7905300 Drilling device and drilling method utilizing dual drivesNov 26, 08Mar 15, 11BAUER DEEP DRILLING GMBH
7806205 Earth drilling deviceApr 17, 09Oct 05, 10Not available

Showing 1 to 20 of 46 results