| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 08/16/1983 | US4398952 Methods of manufacturing gradient composite metallic structures |
| 08/16/1983 | US4398611 Mining drill |
| 08/16/1983 | US4398610 Roller reamer apparatus |
| 08/16/1983 | CA1152058A1 Blast hole grooving bit and wear resistant compact |
| 08/10/1983 | EP0085125A1 Cemented carbide compositions and process for making such compositions |
| 08/09/1983 | US4397363 Rotary drill bits and method of use |
| 08/09/1983 | US4397362 Drilling head |
| 08/09/1983 | US4397361 Abradable cutter protection |
| 08/09/1983 | CA1151639A1 Earth boring bit with extended gage |
| 08/02/1983 | US4396077 Tungsten carbide on steel alloy |
| 08/02/1983 | US4396076 Under-reaming pile bore excavator |
| 08/02/1983 | CA1151147A2 Apparatus and process for drilling underground arcuate paths and installing production casings, conduits, or flow pipes therein |
| 08/02/1983 | CA1151146A2 Apparatus and process for drilling underground arcuate paths and installing production casings, conduits, or flow pipes therein |
| 07/27/1983 | EP0084418A2 Improved drill bit and method |
| 07/26/1983 | US4395076 Bearing design for drill bit |
| 07/26/1983 | US4394882 Continuous chain bit with downhole cycling capability |
| 07/26/1983 | CA1150720A1 Rotary drill bit |
| 07/19/1983 | US4394020 High-speed seal |
| 07/19/1983 | US4393949 Rock boring apparatus |
| 07/19/1983 | US4393948 Rock boring bit with novel teeth and geometry |
| 07/19/1983 | US4393947 Sound attenuating rock drill shank |
| 07/19/1983 | CA1150236A1 Drill bit for well drilling |
| 07/12/1983 | US4392534 Composite nozzle for earth boring and bore enlarging bits |
| 07/06/1983 | EP0083287A1 Hard material button-type insert for drill bits |
| 07/05/1983 | US4391467 System for producing a uniform rubble bed for in situ processes |
| 07/05/1983 | US4391339 Cavitating liquid jet assisted drill bit and method for deep-hole drilling |
| 06/28/1983 | US4390072 Drill bit lubricant circulation system |
| 06/28/1983 | CA1148929A1 Boring head |
| 06/22/1983 | EP0082122A2 Rotary drill bit |
| 06/21/1983 | US4389074 Mine tools utilizing copper-manganese nickel brazing alloys |
| 06/21/1983 | US4388984 Two-stage pressure relief valve |
| 06/14/1983 | CA1148137A1 Sealed and lubricated rock bit with air protected seal ring |
| 06/08/1983 | EP0080967A1 Method of positioning bit sections for welding |
| 06/07/1983 | US4386670 Boring head with extension elements |
| 06/07/1983 | US4386669 Drill bit with yielding support and force applying structure for abrasion cutting elements |
| 06/07/1983 | US4386668 Sealed lubricated and air cooled rock bit bearing |
| 06/07/1983 | US4386667 Plunger lubricant compensator for an earth boring drill bit |
| 06/07/1983 | US4386663 Cooled journal bearing |
| 05/31/1983 | US4385669 Integral blade cylindrical gauge stabilizer reamer |
| 05/31/1983 | CA1147122A1 Method of making diamond compacts for rock drilling |
| 05/24/1983 | US4384627 Retractable well drilling bit |
| 05/24/1983 | US4384624 Earth boring head |
| 05/18/1983 | EP0079243A1 A composite compact component comprising a diamond or boron nitride compact |
| 05/17/1983 | CA1146530A1 Rolling cutter drill bit |
| 05/11/1983 | EP0025789B1 Rotary drill bit |
| 05/10/1983 | US4382477 Rotary drill bits |
| 05/10/1983 | CA1146157A1 Rock bit |
| 05/10/1983 | CA1146155A1 Drilling method and apparatus |
| 05/03/1983 | US4381825 Drill bit nozzle |
| 05/03/1983 | US4381824 Drill bit lubrication system |
| 04/26/1983 | US4381038 Raise bit with cutters stepped in a spiral and flywheel |
| 04/26/1983 | CA1145325A1 Roller-bit with tapered cutting rolls |
| 04/19/1983 | US4380271 Earth auger with removable cutting tooth support structure |
| 04/05/1983 | US4378975 Abrasive product |
| 04/05/1983 | US4378853 Cavitation nozzle plate adapter for rock bits |
| 04/05/1983 | US4378852 Wedge lock stabilizer |
| 04/05/1983 | CA1144146A1 Drill tool |
| 03/30/1983 | EP0075185A2 Dust evacuation for a hollow drill |
| 03/29/1983 | US4378058 Reamer-stabilizer |
| 03/29/1983 | US4378050 Arrangement for full hole drilling |
| 03/01/1983 | US4375242 Sealed and lubricated rock bit with air protected seal ring |
| 02/23/1983 | EP0072503A2 Tool-holder for a boring head |
| 02/17/1983 | WO1983000524A1 Drilling device |
| 02/16/1983 | EP0072072A1 Drilling device |
| 02/15/1983 | US4373594 Rotary drill bit |
| 02/15/1983 | US4373593 Drill bit |
| 02/15/1983 | US4373592 Rotary drilling drill string stabilizer-cuttings grinder |
| 02/15/1983 | US4373410 Method and apparatus for fabricating diamond stud assemblies |
| 02/09/1983 | EP0071036A2 Process for making diamond and cubic boron nitride compacts |
| 02/09/1983 | EP0018972B1 Roller cutter mount for an earth boring cutterhead |
| 02/08/1983 | US4372624 Dynamic O-ring seal |
| 02/08/1983 | US4372404 Cutting teeth for rolling cutter drill bit |
| 02/08/1983 | US4372403 Eccentric rotary bit |
| 02/08/1983 | US4372402 Combination fluid nozzle and backflow valve |
| 02/08/1983 | US4372399 Drill bit with wedge shaped eduction jets |
| 01/25/1983 | US4369850 High pressure fluid jet cutting and drilling apparatus |
| 01/25/1983 | US4369849 Large diameter oil well drilling bit |
| 01/25/1983 | CA1140106A1 Apparatus and process for drilling underground arcuate paths and installing production casings, conduits, or flow pipes therein |
| 01/18/1983 | US4368789 Drilling apparatus |
| 01/18/1983 | US4368788 Metal cutting tools utilizing gradient composites |
| 01/18/1983 | US4368787 Arrangement for removing borehole cuttings by reverse circulation with a downhole bit-powered pump |
| 01/11/1983 | US4367904 Rotary drill bit with conical rotary cutters |
| 01/11/1983 | CA1139300A2 Earth boring auger |
| 01/04/1983 | US4366988 Sonic apparatus and method for slurry well bore mining and production |
| 12/28/1982 | US4365679 With cutting teeth for drilling rock |
| 12/28/1982 | US4365677 Earth boring apparatus |
| 12/28/1982 | CA1138421A1 Sealed lubricated and air cooled rock bit bearing |
| 12/28/1982 | CA1138419A1 Retractable bit system |
| 12/21/1982 | US4364441 Hole cleaning device for augers |
| 12/14/1982 | US4363367 Large diameter drill bit |
| 12/14/1982 | US4363366 Screened hollow stem auger for use in well drilling and testing process |
| 12/08/1982 | EP0066435A1 Drill bit having abradable cutter protection |
| 12/07/1982 | US4362217 Downhole shearers |
| 12/07/1982 | CA1137073A1 Rolling cutter |
| 12/07/1982 | CA1137072A1 Oil well drilling bit |
| 12/01/1982 | EP0065524A1 Rotary drill bit |
| 11/30/1982 | US4361197 Blast hole grooving bit and wear resistant compact |
| 11/30/1982 | CA1136610A1 Earth boring bit with textured bearing surface |
| 11/24/1982 | EP0065340A1 Method for making a foundation pile |
| 11/24/1982 | EP0065284A1 Reamer |