E21B 11 - Other drilling tools

Patents for E21B 11 - Other drilling tools (454)
10/2004
10/14/2004	US20040201234 Post hole digger
10/13/2004	EP1466517A1 Post hole digger
09/2004
09/29/2004	CN1533464A Drilling device for earth drill
09/02/2004	US20040168831 Drilling device for earth drill
08/2004
08/11/2004	CN2632286Y 螺杆钻具 Screw drill
04/2004
04/27/2004	US6725950 Post hole digger
04/07/2004	CN1145193C Wafer carrier
03/2004
03/30/2004	US6712161 Tool and method for soil sampling
01/2004
01/28/2004	EP1384850A2 Downhole packer with anti rotating device
11/2003
11/06/2003	WO2003091532A1 Drilling device for earth drill
10/2003
10/28/2003	US6637521 Earth borer
08/2003
08/07/2003	US20030146021 Post hole digger
06/2003
06/19/2003	WO2003050360A1 A hole cleaning and/or forming tool
06/17/2003	US6578721 Pivoted arm for lowering under a slab
06/04/2003	CN2554332Y Impact hammer
05/2003
05/01/2003	US20030079891 Ground penetrating tool
04/2003
04/17/2003	DE20301785U1 Earth drilling tool for cutting holes, comprises cutting crown which can be closed with cutting disc once hole has been cut
04/01/2003	US6540443 Apparatus for and a method of boring the ground
03/2003
03/26/2003	EP1296017A1 Auger
03/25/2003	US6536541 Boring unit for pile foundations
02/2003
02/26/2003	EP1285250A1 Device for taking samples from a material of granular or powdery composition
01/2003
01/23/2003	WO2003006782A1 Hole digger
01/16/2003	US20030010538 Earth borer
01/16/2003	US20030010537 Hole digger
01/16/2003	US20030010536 Hole digger
12/2002
12/11/2002	EP1264937A2 Grab bucket for trench walls with improved control system for the verticality of the excavation
12/10/2002	US6491116 Frac plug with caged ball
12/04/2002	CN1382896A Hole-forming drilling mahcine with planetary movement for foundation engineering with large-diameter piles
10/2002
10/17/2002	US20020148306 Device for talking samples from a material of granular or powdery composition
08/2002
08/27/2002	US6439629 Post hole digger
07/2002
07/25/2002	US20020096365 Frac plug with caged ball
07/23/2002	US6421880 Rock drill handle
07/18/2002	US20020092683 Boring unit for pile foundations
05/2002
05/30/2002	WO2002042598A1 Well drilling device
05/28/2002	US6394180 Frac plug with caged ball
05/02/2002	US20020050365 Electric hand-held tool with percussion mechanism
04/2002
04/18/2002	US20020043377 Garden auger and method re same
02/2002
02/20/2002	CN2477805Y Planetary powder spraying stirring drilling bit
01/2002
01/23/2002	CN1332064A Hand electric tool with percussion device
01/16/2002	EP1172521A2 Downhole packer with caged ball valve
01/10/2002	DE10030962A1 Elektrohandwerkzeug mit Schlagwerk Electric hand tool with percussion
01/02/2002	EP1166970A2 Electrical hand tool with a percussive device
12/2001
12/06/2001	WO2001092847A1 Device for taking samples from a material of granular or powdery composition
11/2001
11/27/2001	US6321861 Auger
11/15/2001	US20010041099 Apparatus for and a method of boring the ground
11/14/2001	EP1154078A2 Apparatus for and a method of boring the ground
08/2001
08/14/2001	US6273482 Post hole digger
07/2001
07/03/2001	US6254154 Hole digging tool
05/2001
05/17/2001	DE19947214A1 Ram core drilling involves sondes driven in in tandem and connected at target depth with each sonde cylinder bored out and fitted with sample removal opening.
05/17/2001	DE10039870A1 Bore gripper is for producing boreholes in suitable ground surfaces and has frame on underside of which are blades pivotable between open and closed positions
05/08/2001	US6227317 Garden auger having wings and cutters
03/2001
03/28/2001	EP0800610B1 Apparatus for forming a slot in a wellbore
03/21/2001	CN1063515C Borehole boring method and machine
03/06/2001	US6196337 Water pressure post-hole digger
03/06/2001	US6196334 Excavating tool
02/2001
02/22/2001	WO2001011939A1 Novel post hole digger
01/2001
01/09/2001	US6170893 Implement with reinforcing rib or corrugation
12/2000
12/03/2000	CA2309798A1 Excavating tool
11/2000
11/23/2000	WO2000069769A1 Pivoted arm for lowering under a slab
11/21/2000	US6148929 Feeler rod for water mains
10/2000
10/04/2000	CN2399505Y Roofbolt drilling rig
09/2000
09/26/2000	US6123374 Mini hole digger
08/2000
08/29/2000	US6109365 Multi-purpose impact tool
08/17/2000	WO2000047862A1 Rock drill handle
08/15/2000	US6102135 Portable core sampler
07/2000
07/18/2000	US6089632 Post hole digger
06/2000
06/20/2000	US6076617 Auger apparatus
06/02/2000	WO2000009818A3 Implement with reinforcing rib or corrugation
05/2000
05/16/2000	US6062320 Planting and post hole tool
05/10/2000	CN1052292C Cutting device for making a slot in an underground formation
02/2000
02/24/2000	WO2000009818A2 Implement with reinforcing rib or corrugation
02/15/2000	US6024166 Apparatus for forming a slot in a wellbore
12/1999
12/16/1999	DE19931737A1 Conveyor barrel for removal of sediment from well shafts
12/01/1999	CN1046987C Clamshell grab for drilling cylindrical holes
11/1999
11/24/1999	EP0760710B1 Apparatus for lifting and dropping a drop hammer
10/1999
10/27/1999	CA2270264A1 Water pressure posthole digger
07/1999
07/21/1999	CN2329756Y Big diameter multi-bit combined drilling tool
07/20/1999	US5924500 Steerable boring machine
04/1999
04/14/1999	CN1042909C Spiral anchor with deoperable screw
03/1999
03/17/1999	EP0902160A2 Auger drill machine with support rod
12/1998
12/29/1998	CA2180929C Shale containment unit for a drilling rig
11/1998
11/17/1998	US5836630 Posthole digger and cleaning attachment
11/11/1998	CN2296926Y Large-diameter drilling tool for drilling and coring of hard rock
11/03/1998	CA2189855C Method and related cartridge for obtaining a soil sample
10/1998
10/21/1998	CN1196436A Device and process for operating working module
09/1998
09/30/1998	EP0701466B1 A hole-making device
09/24/1998	DE19711305A1 Tubular probe for taking ground samples
09/23/1998	EP0866210A2 Method for operating a tool and apparatus for transmission of rotary torque and speed of rotation of a drive unit to that tool
08/1998
08/25/1998	US5797705 Method for manufacturing a tubular foundation in the ground
08/04/1998	US5788082 Wafer carrier
07/1998
07/01/1998	EP0851090A1 Down-the-hole hammer
07/01/1998	EP0774039B1 Device and method for making a slot in an underground formation
02/1998
02/11/1998	CN1173039A Wafer carrier
12/1997
12/24/1997	WO1997048875A1 Down-the-hole hammer
11/1997
11/21/1997	CA2205783A1 Steerable boring machine
11/11/1997	US5685587 Posthole digger and cleaning attachment
10/1997
10/15/1997	EP0800610A1 Apparatus for forming a slot in a wellbore
10/15/1997	CN2264802Y 螺杆钻具 Screw drill
09/1997
09/23/1997	US5669648 Post hole digger
09/02/1997	US5662179 Hole-making device

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