Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21B - Earth or rock drilling; Obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells › E21B 10 - Drill bits
Patents for E21B 10 - Drill bits (19,464)
11/1982
11/23/1982US4360069 Diamond drill bits
11/16/1982US4359335 Method of fabrication of rock bit inserts of tungsten carbide (WC) and cobalt (Co) with cutting surface wear pad of relative hardness and body portion of relative toughness sintered as an integral composite
11/16/1982US4359115 Novel rotary drill bits and drilling process
11/16/1982US4359114 Raise drill bit inboard cutter assembly
11/16/1982US4359113 Earth boring bit with extended gage
11/16/1982US4359112 Hybrid diamond insert platform locator and retention method
11/16/1982US4359111 Self compensating seal apparatus
11/16/1982CA1135683A1 Pump in core breaker carrier
11/09/1982US4358384 Mixture of molybdenum disulfide, copper, metal soap and hydrocarbon oil
11/09/1982US4358317 Materials for a bit
11/02/1982US4356873 Cutter mounting and apparatus and method for a drill bit
11/02/1982CA1134807A1 Low cutter load raise head
10/1982
10/26/1982US4356034 Insert for drill bit, sintering, thermocycling
10/19/1982US4354561 Reciprocating drill bit
10/19/1982US4354560 Apparatus for drilling enlarged boreholes
10/19/1982US4354559 Enlarged borehole drilling method and apparatus
10/19/1982CA1133954A1 Method for drilling hard material
10/05/1982US4352400 Drill bit
10/05/1982CA1132974A1 Earth boring bit with eccentric seal boss
10/05/1982CA1132973A1 Gage row structure of an earth boring drill bit
10/05/1982CA1132972A1 Long-life milled tooth cutting structure
10/05/1982CA1132971A1 Rotary boring bit
09/1982
09/28/1982US4351402 Body structure and nozzle for enhancing the flow of drilling fluid in a rotary drill bit
09/28/1982US4351401 Earth-boring drill bits
09/21/1982US4350215 Drill bit and method of manufacture
09/21/1982US4350204 Reamer
09/21/1982US4350060 Method of making a rotary rock bit
09/14/1982CA1131613A1 Earth boring apparatus
09/14/1982CA1131612A1 Non-rotating stabilizer for raise boring
09/02/1982WO1982002922A1 Drilling method and apparatus
08/1982
08/24/1982CA1130200A1 Down hole pump with bottom receptor
08/18/1982EP0058061A2 Tools for underground formations
08/17/1982US4344658 Earth boring drill bit with snap ring cutter retention
08/17/1982US4344629 Self-lapping high speed seal with wear-in lip
08/11/1982EP0018394B1 Rotary rock drill bit
08/10/1982US4343372 Gage row structure of an earth boring drill bit
08/10/1982US4343371 Hybrid rock bit
08/03/1982US4342368 Rotary drills and drill bits
07/1982
07/28/1982EP0056506A1 Stabilizing tool for earth boring drill strings and method of using same
07/27/1982US4341273 Rotary bit with jet nozzles
07/27/1982CA1128494A1 Lubricating device
07/13/1982US4339009 Button assembly for rotary rock cutters
07/13/1982US4339008 Well notching tool
07/13/1982CA1127627A1 Bearing means in rotary drill bits
07/13/1982CA1127433A1 Rock bolt and installation system
07/06/1982US4337677 Method of making die-cast masonry drill
07/06/1982CA1126982A1 Bumper mounted soil sampling device
06/1982
06/30/1982EP0054721A1 Drill bit, especially rock drill bit
06/29/1982US4336850 Internal fluid screen to prevent nozzle and port plugging
06/29/1982CA1126722A1 Rotary drill bit
06/29/1982CA1126721A1 Radial force anti-extrusion device for sealed drill string unit
06/22/1982US4335794 Rotary cone cutter
06/22/1982US4335791 Pressure compensator and lubricating reservoir with improved response to substantial pressure changes and adverse environment
06/22/1982US4335532 Excavating tooth
06/22/1982CA1126255A1 Rock drill
06/22/1982CA1126254A2 Shaft drill bit with improved cutter bearing and seal arrangement and cutter insert arrangement
06/15/1982US4334586 Inserts for drilling bits
06/15/1982US4334585 Insert retention and cooling apparatus for drag bits
06/15/1982CA1125518A1 Method of making tool inserts and drill bits
06/15/1982CA1125500A1 Roller cutter
06/10/1982WO1982001910A1 Rotary drill bit
06/10/1982WO1982001909A1 Rotary drill bit
06/08/1982US4333691 Rotary rock bit with improved thrust flange
06/08/1982US4333541 Bumper mounted soil sampling device
06/08/1982US4333540 Cutter element and cutter for rock drilling
06/08/1982US4333364 Method for manufacturing a rotary drill bit having a solid forged, unitary body
06/08/1982CA1125274A2 Rotary bore hole enlarging drill bit
06/08/1982CA1125273A2 Rotary bore hole enlarging drill bit
06/08/1982CA1125272A2 Rotary bore hole enlarging drill bit
06/08/1982CA1125271A2 Rotary bore hole enlarging drill bit
06/08/1982CA1125270A2 Enlarged bore hole drilling apparatus
06/02/1982EP0052978A2 A cutting tool
06/01/1982USRE30952 Percussion drill bit
06/01/1982CA1124708A1 Process for the manufacture of a drill head having wear-resistant elements
05/1982
05/26/1982EP0052584A1 A method of producing a steel body comprising hard material inserts
05/18/1982US4330158 Rotary rock bit with improved thrust flange
05/18/1982US4330044 Drill bit
05/18/1982US4330043 Keyseat wiper
05/18/1982CA1123822A1 Insert for tool wear surfaces and method of manufacture
05/11/1982US4328873 Automatic depth compensating system for drill bit lubrication
04/1982
04/27/1982CA1122622A1 Cutter tool bit
04/20/1982US4325439 Diamond insert stud for a drag bit
04/14/1982EP0049256A1 Rotary drill bit
04/14/1982EP0049246A1 Rotary drill bit.
04/13/1982US4324300 Rotary drill bit
04/07/1982EP0048908A1 Drill, particularly for rotary percussion drilling
04/06/1982US4323284 Thrust face bearing structure for rolling cutter drill bit
04/06/1982US4323131 Removable anti-wear insert
04/06/1982US4323130 Drill bit
04/06/1982US4323129 Hole digging apparatus and method
04/06/1982CA1121331A2 Method for making rock bits
03/1982
03/30/1982US4321974 Annular drilling hammer
03/30/1982CA1120918A1 Roof drill bit with hexagonal body portion
03/30/1982CA1120917A1 Earth boring bit with eccentrically formed bearing surface
03/23/1982US4320808 Rotary drill bit
03/16/1982US4319707 Cutters for drilling bits
03/16/1982US4319648 Process for drilling underground arcuate paths and installing production casings, conduits, or flow pipes therein
03/02/1982CA1119006A1 Composite compact components fabricated with high temperature filler metal and method of making same
02/1982
02/24/1982EP0046374A2 Tool insert
02/23/1982US4316515 Shaft drill bit with improved cutter bearing and seal arrangement and cutter insert arrangement
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