| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 06/24/1980 | US4209684 Fusion technique of assembling rotary drill bit and adjusting gage of cutting elements |
| 06/24/1980 | US4209124 Rock bit assembly method |
| 06/24/1980 | US4209121 Electronic bit gaging |
| 06/17/1980 | US4208154 Core drill |
| 06/17/1980 | US4207954 Core bit having axial conical core breaker |
| 06/17/1980 | US4207658 Journal and pilot bearings with alternating surface areas of wear resistant and anti-galling materials |
| 06/17/1980 | CA1079713A1 Drilling bit |
| 06/10/1980 | US4206952 Rotary drill bit with a porous cup bearing |
| 06/03/1980 | CA1078818A1 Raise drill with removable stem |
| 06/03/1980 | CA1078817A1 Check valve for rock drill |
| 06/03/1980 | CA1078650A1 Core drill |
| 05/27/1980 | US4204437 Friction bearing rock bit and segment, and method for making them |
| 05/27/1980 | CA1078371A1 Rotary drill bit and method for making same |
| 05/20/1980 | US4203496 Longitudinal axis roller drill bit with gage inserts protection |
| 05/20/1980 | CA1077921A1 Device for exposing worn carbide tips in drill bits |
| 05/13/1980 | US4202421 Impact bit having circumferential inserts of differing combination |
| 05/13/1980 | US4202420 Rock drill with hard metal drilling head |
| 05/13/1980 | US4202419 Roller cutter with major and minor insert rows |
| 05/13/1980 | US4202418 Roller cutter mounts |
| 05/13/1980 | US4202416 Method and apparatus for sinking a cased borehole for producing cased pile foundations |
| 05/06/1980 | CA1077018A1 Rotary drill bit |
| 04/29/1980 | US4200343 Sealing system for a rotary rock bit |
| 04/29/1980 | US4200160 Sweep pickup for a big hole bit |
| 04/29/1980 | US4200159 Cutter head, drill bit and similar drilling tools |
| 04/29/1980 | US4199856 Method of providing lubricant volume displacement system for a rotary rock bit |
| 04/22/1980 | USRE30257 Well drilling tool |
| 04/22/1980 | US4199156 Sealing ring for drilling tool cutters |
| 04/22/1980 | US4199035 Cutting and drilling apparatus with threadably attached compacts |
| 04/16/1980 | EP0010037A1 Hollow auger for drilling when forming concrete piles |
| 04/16/1980 | EP0009838A1 Rock drill bit for percussion drill or electric hammer |
| 04/08/1980 | CA1075226A1 Percussion drill bit |
| 04/02/1980 | EP0009315A1 Method of making tool inserts, wire-drawing die blank and drill bit comprising such inserts |
| 04/01/1980 | US4195701 Raise drill having water passages directed toward the roller cutters |
| 04/01/1980 | US4195700 Large diameter bit with sweep pickup |
| 04/01/1980 | CA1074779A1 Earth-boring drill bits |
| 03/25/1980 | US4194795 Seal protector for a sealed bearing rock bit |
| 03/25/1980 | US4194794 Axial bearing for rotary drill bit |
| 03/25/1980 | US4194790 Rock cutting tip inserts |
| 03/25/1980 | US4194581 Deep drill hammer |
| 03/25/1980 | US4194578 Raise boring head with retractable gage cutters |
| 03/25/1980 | CA1074344A1 Bit holder |
| 03/18/1980 | US4193637 Rotary cutterhead for an earth boring machine |
| 03/18/1980 | US4193464 Replaceable shirttail |
| 03/18/1980 | US4193463 Drilling bit fluid-cooled friction bearing |
| 03/18/1980 | US4193462 Rotary boring head |
| 03/18/1980 | US4193461 Means and method for forming and enlarging holes in soil |
| 03/18/1980 | CA1073897A1 Three cone rock bit |
| 03/18/1980 | CA1073808A1 Well casing window mill |
| 03/11/1980 | CA1073444A1 Replaceable wear pad for a rock bit cutter yoke |
| 03/04/1980 | CA1072945A1 Reconditionable drill bit assembly |
| 02/26/1980 | US4190301 Axial bearing for a roller drill bit |
| 02/26/1980 | US4190128 Roof drill bit with hexagonal body portion |
| 02/26/1980 | US4190127 Brazing inserts |
| 02/26/1980 | US4190126 Cemented tungsten carbide chips |
| 02/26/1980 | US4190125 Drill bit and steel combination for improved fluid flow |
| 02/26/1980 | US4190124 Stabilizer and blade attachment means therefor |
| 02/21/1980 | WO1980000265A1 Rotary drill bit |
| 02/20/1980 | EP0007980A1 Fastener with spreading shaft, tool and method for the preparation of holes for such fasteners |
| 02/19/1980 | US4189185 Method for producing chambered blast holes |
| 02/19/1980 | US4189184 Rotary drilling and extracting process |
| 02/19/1980 | US4189015 Drill bits for obtaining core samples |
| 02/19/1980 | US4189014 Enhanced cross-flow with two jet drilling |
| 02/19/1980 | US4189013 Roof drill bit |
| 02/19/1980 | US4189012 Earth boring tool |
| 02/19/1980 | US4188813 Method and machine for the manufacture of long concrete drills provided with helical splines over part of their length |
| 02/19/1980 | CA1072075A1 Brazing inserts |
| 02/12/1980 | US4188242 Combination carburizing and boronizing methods |
| 02/12/1980 | US4187922 Varied pitch rotary rock bit |
| 02/12/1980 | US4187921 Rock bit combination to enhance cuttings removal |
| 02/12/1980 | US4187920 Enlarged bore hole drilling method and apparatus |
| 02/12/1980 | US4187743 Rock bit and method of manufacture |
| 02/05/1980 | US4186810 Fluid operated undercutter |
| 02/05/1980 | US4186809 Steep angle raise bit |
| 02/05/1980 | US4186808 Earth boring machine with crushing rollers |
| 02/05/1980 | US4186628 Rotary drill bit and method for making same |
| 02/05/1980 | CA1071184A1 Asymmetric gage insert for an earth boring apparatus |
| 01/29/1980 | US4185708 Bit for drilling holes in rocks |
| 01/29/1980 | US4185707 Auger construction |
| 01/29/1980 | US4185706 Rock bit with cavitating jet nozzles |
| 01/22/1980 | US4184554 Check valve for rock drill |
| 01/15/1980 | US4183417 Roller bit seal excluded from cuttings by air discharge |
| 01/15/1980 | US4183416 Cutter actuated rock bit lubrication system |
| 01/15/1980 | US4183415 Drilling apparatus |
| 01/15/1980 | CA1069882A1 Roller bit |
| 01/09/1980 | EP0006656A1 Device for winning minerals via a borehole |
| 01/08/1980 | US4182425 Reamer |
| 01/08/1980 | US4182422 Large diameter bit with bridge mounted drive stem |
| 01/08/1980 | US4182394 Rotary rock bit bearing pin hardfacing method and apparatus |
| 01/01/1980 | US4181377 Rock bit having an improved cone retention system |
| 01/01/1980 | US4181187 Rock drill bit with stress relief insert sockets |
| 01/01/1980 | US4181185 Thrust flange actuated rock bit lubrication system |
| 01/01/1980 | CA1069114A Underreamer having cutter arm position indication |
| 01/01/1980 | CA1069113A Rock drilling process and device for start-up of sawe |
| 12/25/1979 | CA1068677A Raise-boring |
| 12/25/1979 | CA1068541A Method for protein fortification of extra pumped meats |
| 12/18/1979 | US4179003 Seal for a rolling cone cutter earth boring bit |
| 12/18/1979 | US4179000 Self-cleaning raise boring head system |
| 12/18/1979 | CA1068256A1 Earth-boring drill bits |
| 12/18/1979 | CA1068255A1 Earth auger |
| 12/11/1979 | US4178045 Abrasion resistant bearing seal |