| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 12/11/1979 | US4177866 System for boring raises having portions of different diameters |
| 12/11/1979 | CA1067819A1 Mining and extracting process and apparatus |
| 12/04/1979 | US4176848 Rotary bearing seal for drill bits |
| 12/04/1979 | US4176725 Earth boring cutting element enhanced retention system |
| 12/04/1979 | US4176724 Rotary rock bit and method of making same |
| 12/04/1979 | US4176723 Diamond drill bit |
| 11/29/1979 | WO1979001010A1 Roller cutter mount for an earth boring cutterhead |
| 11/27/1979 | US4175626 Fluid-jet drill |
| 11/27/1979 | CA1067065A1 Soft formation drill bit |
| 11/27/1979 | CA1066999A1 Method of finishing a steel article having a boronized and carburized case |
| 11/20/1979 | US4174759 Rotary drill bit and method of forming bore hole |
| 11/14/1979 | EP0005384A1 Down-hole air hammer comprising a drill bit |
| 11/06/1979 | US4173457 Hardfacing composition of nickel-bonded sintered chromium carbide particles and tools hardfaced thereof |
| 11/06/1979 | CA1065839A1 Axial bearing for a roller drill bit |
| 10/30/1979 | US4172502 Roller bit |
| 10/30/1979 | US4172395 Method of manufacturing a rotary rock bit |
| 10/23/1979 | CA1064900A1 Asymmetric insert for inner row of an earth boring cutter |
| 10/17/1979 | EP0004674A2 Drill bit for making bore holes in earth and rock |
| 10/16/1979 | CA1064471A1 Underreaming tool with overriding extended arm retainer |
| 10/16/1979 | CA1064468A1 Percussion bit with bypass channel therein |
| 10/09/1979 | US4170267 Tooth for rotary drilling tool for drilling foundations |
| 10/09/1979 | CA1064014A1 Rock drill bit |
| 10/09/1979 | CA1064013A1 Sealing system for a rotary rock bit |
| 10/02/1979 | US4169510 Drilling and belling apparatus |
| 09/25/1979 | US4168923 Electron beam welding of carbide inserts |
| 09/25/1979 | US4168868 Sealing system for an earth boring cutter |
| 09/25/1979 | US4168755 Nutating drill bit |
| 09/25/1979 | CA1063096A1 Hole reamer |
| 09/25/1979 | CA1063095A1 Rotary bit |
| 09/25/1979 | CA1063093A1 Drill crown coupling |
| 09/18/1979 | US4167980 Rock boring cutter with replaceable cutting element |
| 09/18/1979 | CA1062698A1 Hole opener with improved rotary cutter mounting |
| 09/11/1979 | US4167220 System for lubricating the bearings of cutting rollers of a roller bit |
| 09/11/1979 | US4167219 Viscous pump rock bit lubrication system |
| 09/11/1979 | CA1062244A1 Cutter mounting for a large hole earth boring bit |
| 09/11/1979 | CA1062243A1 Earth boring cutting element retention system |
| 09/11/1979 | CA1062241A1 Fluid operated undercutter |
| 09/11/1979 | CA1062051A1 Attachment for a rotary-hammer power tool |
| 09/05/1979 | EP0003816A1 Rock drilling tool |
| 09/05/1979 | EP0003815A1 Drill bit for a rotary percussion drilling machine |
| 08/28/1979 | US4165790 Roof drill bit |
| 08/28/1979 | CA1061325A1 Diamond cutter rock bit with penetration limiting |
| 08/28/1979 | CA1061323A1 Rock-drilling bit for percussion hammers |
| 08/28/1979 | CA1061226A1 Differentially carburized rock bit cutter |
| 08/21/1979 | CA1060881A2 Percussion drill bit |
| 08/14/1979 | CA1060429A1 Sealing between relatively rotating members in boring apparatus |
| 08/07/1979 | CA1059984A1 Rotary rock bit with the bearing pin fused to the rock bit arm |
| 07/31/1979 | CA1059499A1 Plain and/or thrust bearing device |
| 07/25/1979 | EP0003116A1 Composite compact components fabricated with high temperature brazing filler metal, method and apparatus for making same |
| 07/25/1979 | EP0003103A2 Down-the-hole drill |
| 07/24/1979 | CA1059114A1 Bit for drilling holes in rocks |
| 07/17/1979 | US4161343 Cone retainer for a rotary rock bit |
| 07/17/1979 | US4161225 Skewed inserts for an earth boring cutter |
| 07/17/1979 | US4161223 Pressure relief valve for rock bits |
| 07/17/1979 | CA1058608A1 Rock bit bearing structure |
| 07/17/1979 | CA1058607A1 Detachable drill bit for impact drilling |
| 07/03/1979 | US4159746 Bit of circular cross-section |
| 07/03/1979 | CA1057735A1 Rock boring cutter with thread-on replaceable cutting element |
| 06/26/1979 | US4158973 Rolling cutter drill bit |
| 06/26/1979 | CA1057276A2 Earth boring drill apparatus with replaceable cutter |
| 06/26/1979 | CA1057275A1 Raise drill with replaceable stem and replaceable stem therefor |
| 06/19/1979 | US4158394 Mechanism for lubricating the bearings of the cutting rollers of a roller bit |
| 06/19/1979 | CA1056624A1 Drilling assembly |
| 06/12/1979 | CA1056369A1 Underreamer having splined torque transmitting connector between telescoping portions for control of cutter position |
| 06/12/1979 | CA1056368A1 Lubricant pressure compensator for an earth boring drill bit |
| 06/05/1979 | USRE30023 Method for protein fortification of extra pumped meats |
| 06/05/1979 | US4157122 Rotary earth boring drill and method of assembly thereof |
| 05/30/1979 | EP0002160A1 Device for drilling boreholes in the soil |
| 05/29/1979 | US4156471 Rubble and core removal apparatus |
| 05/29/1979 | US4156470 Rotary earth boring drill bit with centrifugal foreign particle barrier device |
| 05/29/1979 | US4156329 Diamond or boron nitride abrasives, coating with a brazing metal |
| 05/22/1979 | US4156123 Method for making rock bits |
| 05/15/1979 | US4154313 Flow control valve for rock bits |
| 05/15/1979 | US4154312 Drill bit with single cutting head |
| 05/08/1979 | US4153121 Fluid operated undercutter |
| 05/08/1979 | CA1054141A1 Rock bit assembly |
| 05/08/1979 | CA1054140A1 Vacuum, vacuum-pressure, or pressure circulation bit having jet-assisted vacuum |
| 05/08/1979 | CA1053938A1 Drill bit |
| 05/01/1979 | US4151889 Rock-drilling bit for percussion hammers |
| 05/01/1979 | CA1053659A1 Boring apparatus capable of boring straight holes |
| 05/01/1979 | CA1053658A1 Earth boring auger |
| 05/01/1979 | CA1053657A1 Earth boring auger |
| 04/24/1979 | US4150728 Rock drill bit inserts with hollow bases |
| 04/24/1979 | US4150476 Method of mounting insert for mining tools and the like |
| 04/18/1979 | EP0001406A1 Roller drill bit |
| 04/17/1979 | CA1052600A1 Drill bit |
| 04/10/1979 | US4148368 Diamond embedded in a tungste carbide insert |
| 04/03/1979 | CA1051865A1 Well drilling bit |
| 04/03/1979 | CA1051864A1 Bearing retaining pin for earth boring drill |
| 03/27/1979 | US4146098 Masonry cutting tool |
| 03/27/1979 | US4146097 Bore hole air hammer |
| 03/27/1979 | CA1051418A1 Percussion drill bit |
| 03/27/1979 | CA1051417A1 Boring apparatus |
| 03/20/1979 | US4145094 Rotary rock bit and method of making same |
| 03/20/1979 | US4144942 Method of setting a pile without noise or vibration and apparatus therefor |
| 03/20/1979 | US4144941 Directional impact tool for tunneling |
| 03/13/1979 | US4143920 Mineral cutting pick insert shape |
| 03/06/1979 | US4142598 Two stage large diameter drill bit |
| 03/06/1979 | CA1050006A1 Bearing separator and sealing system for rock bit |
| 03/06/1979 | CA1050005A1 Locking apparatus for earth boring cutter or stabilizer |