| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 09/05/1984 | EP0117552A2 An improved diamond rotating bit |
| 09/05/1984 | EP0117506A2 A cutting tooth and a rotating bit having a fully exposed polycrystalline diamond element |
| 08/29/1984 | EP0117241A1 Drill bit and improved cutting element |
| 08/28/1984 | CA1173427A1 Tool for formation of holes in macroporous compressible soils |
| 08/28/1984 | CA1173426A1 Tool for forming earth holes having fixed walls and method therefor |
| 08/22/1984 | EP0116403A1 Abrasive product |
| 08/21/1984 | US4466622 Compound dynamic seal for rolling cutter drill bit |
| 08/21/1984 | US4466621 Rotary drill bit multiple seal assembly |
| 08/21/1984 | US4466498 Detachable shoe plates for large diameter drill bits |
| 08/14/1984 | US4465148 Eccentric counterbore for diamond insert stud |
| 08/14/1984 | CA1172626A1 Rock drill |
| 08/07/1984 | CA1172287A1 Excavating tooth |
| 08/07/1984 | CA1172243A1 Rotary bit bearing system |
| 08/02/1984 | WO1984002869A1 Method of and means for reconditioning percussion drills |
| 07/31/1984 | US4463220 Drill bit for forming a fluid cushion between the side of the drill bit and the side wall of a bore hole |
| 07/31/1984 | US4462293 Wear-resistant and shock-resistant tools and method of manufacture thereof |
| 07/25/1984 | EP0114016A1 Drill bit for combined rotary and jet drilling |
| 07/24/1984 | US4461513 Rotary stone-cutting head |
| 07/24/1984 | US4461362 Mining drill with apertures and collars providing for flow of debris |
| 07/24/1984 | US4461361 Underreamer with cylindrical boss and socket hinge assembly for the cutter arm |
| 07/24/1984 | CA1171402A1 Underreamer with debris flushing flow paths |
| 07/17/1984 | US4460053 Drill tool for deep wells |
| 07/17/1984 | CA1171074A1 Underreamer with cylindrical boss and socket hinge assembly for the cutter arm |
| 07/17/1984 | CA1171073A1 Rock bit with bearing lubricant reservoir |
| 07/17/1984 | CA1171072A1 Rock bit |
| 07/17/1984 | CA1171071A1 Rotary drill bit |
| 07/10/1984 | US4458769 Rock drill |
| 07/10/1984 | US4458766 Hydrojet drilling means |
| 07/10/1984 | US4458765 Tool for forming a hole in macroporous compressible soil |
| 07/10/1984 | US4458761 Underreamer with adjustable arm extension |
| 07/03/1984 | US4457384 Water separator and backflow valve |
| 07/03/1984 | CA1170028A1 Method of fabrication of rock bit inserts |
| 06/27/1984 | EP0111600A1 Improvements in or relating to cutting tools |
| 06/26/1984 | US4456083 Blast furnace taphole drill |
| 06/26/1984 | US4456082 Expandable rock bit |
| 06/26/1984 | US4456078 Earth boring method and apparatus |
| 06/20/1984 | EP0111117A1 Drilling tool for making an undercut inside a hole, and tiltable tool inserted into that drilling tool |
| 06/19/1984 | US4455278 Wear resistant |
| 06/19/1984 | US4454994 Load bearing surface |
| 06/19/1984 | US4454923 Holding device for boring head tools or the like |
| 06/19/1984 | CA1169416A1 Hybrid diamond insert platform locator and retention method |
| 06/12/1984 | US4453836 Sealed hard-rock drill bit |
| 06/12/1984 | US4453775 Cutting tool and method of manufacturing such a tool |
| 06/12/1984 | US4453605 Drill bit and method of metallurgical and mechanical holding of cutters in a drill bit |
| 06/05/1984 | US4452539 Bearing seal for rotating cutter drill bit |
| 06/05/1984 | US4452325 Composite structure for cutting tools |
| 06/05/1984 | US4452324 Rotary drill bit |
| 06/05/1984 | US4452323 Valve assembly for drill bit lubrication system |
| 06/05/1984 | US4452307 For a wire line and impact device in loosening oil well tubing and casing |
| 05/29/1984 | US4451162 Spaced button thrust surface for earth boring bit |
| 05/29/1984 | US4451093 Tool for scarifying concrete |
| 05/22/1984 | US4449595 Method and apparatus for drilling a curved bore |
| 05/22/1984 | CA1167835A1 Thin wall sintered bushing for a rock bit |
| 05/16/1984 | EP0108696A1 Method and apparatus for advancing quickly through non valuable soil when drilling an exploration well |
| 05/15/1984 | US4448271 Earth boring device |
| 05/15/1984 | US4448270 Variable diameter earth boring bit |
| 05/15/1984 | US4448269 Cutter head for pit-boring machine |
| 05/15/1984 | US4448268 Rock bit with bearing lubricant reservoir |
| 05/09/1984 | EP0108029A2 Rock bit cutter with truncated retainer ring |
| 05/08/1984 | US4446936 Mining drill |
| 05/08/1984 | US4446935 Intermittent high-drag oil well drilling bit |
| 05/08/1984 | US4446933 Rotary earth boring drill bit with centrifugal lubrication system |
| 05/08/1984 | CA1167088A1 Cooled journal bearing |
| 05/08/1984 | CA1167023A1 Device for producing boreholes in coal or the like |
| 05/08/1984 | CA1166857A1 Apparatus and method for coring subterranean holes |
| 05/02/1984 | EP0107630A2 Drill bit with self cleaning nozzle |
| 05/02/1984 | EP0107475A2 Drill bit assembly with fluid separator |
| 05/02/1984 | EP0106929A2 Wear-resistant and shock-resistant tools and method of manufacture thereof |
| 05/01/1984 | US4445791 Rotary drill bit ball plug |
| 05/01/1984 | US4445580 Deep hole rock drill bit |
| 05/01/1984 | CA1166629A1 Rock drill |
| 05/01/1984 | CA1166628A1 Rotary drilling drill string stabilizer-cuttings grinder |
| 05/01/1984 | CA1166444A1 Blast furnace taphole drill |
| 04/25/1984 | EP0106702A2 Drill bit assembly having improved operational life |
| 04/25/1984 | EP0106701A2 Method and apparatus for lubricating a drill bit |
| 04/25/1984 | EP0106700A2 Drill bit assembly |
| 04/24/1984 | US4444518 Rock bit cone retention means |
| 04/24/1984 | US4444281 For drilling a well bore |
| 04/24/1984 | US4444279 Drilling tool |
| 04/24/1984 | US4444278 Rotatable drilling head |
| 04/24/1984 | CA1166237A1 Rotary drill bits |
| 04/17/1984 | US4442909 Drill bit |
| 04/17/1984 | CA1165757A1 Rock bit cutter construction |
| 04/17/1984 | CA1165756A1 Arrangement for full hole drilling |
| 04/17/1984 | CA1165755A1 Rotary drill bit |
| 04/17/1984 | CA1165753A1 Wedge lock stabilizer |
| 04/10/1984 | US4441566 Drill bit with dispersed cutter inserts |
| 04/10/1984 | US4441244 Sealed bearing rotary rock bit assembly |
| 04/04/1984 | EP0104894A2 Tool components |
| 04/04/1984 | EP0104893A2 Tool component |
| 04/03/1984 | US4440247 Rotary earth drilling bit |
| 04/03/1984 | US4440246 Cutting member for rotary drill bits |
| 04/03/1984 | US4440244 Drill tool |
| 04/03/1984 | US4440242 Device for producing boreholes in coal or the like |
| 04/03/1984 | CA1164906A1 High speed seal |
| 04/03/1984 | CA1164857A1 Drill cutter bit |
| 04/03/1984 | CA1164856A1 Rotary drill bit |
| 04/03/1984 | CA1164855A1 Rolling cutter drill bit |
| 03/29/1984 | WO1984001188A1 Hydrojet drilling means and method |
| 03/29/1984 | WO1984001187A1 Earth-boring drill bit with rectangular nozzles |