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| Number | Title | Issue Date |
| 8118118 | Modular rotary drill head A modular base assembly for a rotary drill head includes a drive flange assembly having a tubular drive shaft configured to engage at least a lower drive interface. The modular base assembly also includes a gear housing supporting the drive flange assembly. Furtherm... | 02/21/2012 |
| 7806205 | Earth drilling device An earth drilling device having a rotary drive and a drilling head connected to the rotary drive via a shaft is disclosed. The shaft runs at least partially axially along a pipe with two pipe ends, the first pipe end of which is connectable to a vacuum source and th... | 10/05/2010 |
| 7770668 | Modular rotary drill head A modular base assembly for a rotary drill head includes a drive flange assembly having a tubular drive shaft configured to engage at least a lower drive interface. The modular base assembly also includes a gear housing supporting the drive flange assembly. Furtherm... | 08/10/2010 |
| 7762358 | Sensor assembly in a gearbox for positioning The invention relates to a sensor assembly in a gearbox which is used for positioning, where the sensor assembly comprises a relative to the gearbox housing (18) fixed sensor (20), and where the angle between the gearbox housing (18) and the out... | 07/27/2010 |
| 7717195 | Auger stabilizer An auger stabilizer includes a rigid elongated body having a first end and a second end. The length of the body is adjustable between a retracted transport position and an extended drilling position. A pair of spaced apart wheels are attached at the second end of th... | 05/18/2010 |
| 7510031 | Directional drilling control A down-hole drilling assembly (12, 16) and control system (120) therefor, for directional drilling including a bent housing of a bottom hole assembly (18), utilizing a gearbox (102) to derive a higher speed (about 600 r.p.m.) rotational d... | 03/31/2009 |
| 7461707 | Electric horizontal directional drilling machine system An electric horizontal directional drilling machine. An electric horizontal directional drilling machine is powered by an electric power assembly. The power assembly is made up of a fuel cell and inverter, or multiple fuel cells with synchronized inverters, are used... | 12/09/2008 |
| 7393156 | Construction apparatus for planting a series of vertical posts A construction apparatus having an arrangement for controlling guidance of a frame thereof along a predetermined path, e.g., a slip-form paving apparatus, has an arrangement for selectively digging vertical bores in the ground surface at spacings along the predeterm... | 07/01/2008 |
| 7360603 | Methods and apparatuses for wellbore operations A dual sided elevator for supporting a tubular member in a wellbore operation, the elevator in one aspect having an openable back end and an openable front end, either end openable by using opening apparatus at the front of the elevator; such an elevator with operat... | 04/22/2008 |
| 7350587 | Pipe guide A guide is disclosed for facilitating the movement of tubulars in well operations. In one aspect, the guide is a pipe guide with a base, an upper extension apparatus, a lower extension apparatus with a first end pivotably secured to the upper extension apparatus and... | 04/01/2008 |
| 7347273 | Bottom hold completion system for an intermittent plunger A bottom hole assembly for an intermittent lift plunger system includes a retrievable downhole anchor which may be set and reset in one downhole trip, a retrievable packing device, and a plunger stop. ... | 03/25/2008 |
| 7334606 | Valve tester suspension enhancements A valve tester assembly is disclosed that includes an articulated arm assembly having a first end and a second end, with the second end of the articulated arm assembly being movable away from and toward the first end such that when the first end of the articulated a... | 02/26/2008 |
| 7328757 | All terrain vehicle powered mobile drill A method includes powering a drill motor with power derived from an all terrain vehicle (ATV) engine and controlling the drill motor. An apparatus includes a ATV with a power takeoff configured to deliver power from an ATV engine. A drill mast is moveably coupled to... | 02/12/2008 |
| 7308953 | Mobile drilling rig An embodied mobile drilling rig is made of three sections, two substructures and a mast section, which are easily transported and installed at a drilling site. Each substructure includes a mast starting section; a floor side box connected to the mast starting sectio... | 12/18/2007 |
| 7255181 | Method and device for the drilling of holes in ground or rocky material In a method and device for drilling, in particular percussion drilling or rotary percussion drilling, holes in soil or rock material, wherein a borehole is formed by a percussive and/or rotational movement carried out by a drill bit (1) mounted on a drill rod... | 08/14/2007 |
| 7226058 | Sled for transporting a power auger vertically across ice A sled for transporting a power auger across ice in a vertical position having a cradle for holding the ice auger in a vertical position attached to a center stand with adjustable height. The center stand is attached to a folding stand that is attached to two skis. ... | 06/05/2007 |
| 7213656 | Apparatus and method for facilitating the connection of tubulars using a top drive An apparatus and method for facilitating the connection of tubulars using a top drive and is, more particularly but not exclusively, intended for facilitating the connection of a section or stand of casing to a string of casing. ... | 05/08/2007 |
| 7128161 | Apparatus and methods for facilitating the connection of tubulars using a top drive An apparatus for facilitating the connection of tubulars using a top drive, the apparatus comprising a supporting member connectable to said top drive characterized in that it further comprises an internal tool for engaging said tubular and an external clamping devi... | 10/31/2006 |
| 7093679 | Foundation drilling apparatus and method with continuously variable hydraulic differential rotary table A drilling machine drills foundation holes known as drilled shafts or bored piles with a drilling tool attached to an end of a kelly. The kelly is rotated with a rotary drive. The rotary drive has a first motor, a final drive gear coupled to the kelly so as to rotat... | 08/22/2006 |
| 7073598 | Apparatus and methods for tubular makeup interlock The present invention provides for an apparatus and methods to prevent an operator from inadvertently dropping a string into a wellbore during assembling and disassembling of tubulars. Additionally, the apparatus and methods can be used to for running in casing, run... | 07/11/2006 |
| 7040416 | T-post hole-forming device and use for installing a T-post The invention provides a T-post hole-forming device, comprising (a) a shaft; (b) a head for receiving a driving force at the top of said shaft; (c) a flat plate affixed to one side of said shaft, the shaft terminating in a pointed end for piercing the ground. Also p... | 05/09/2006 |
| 7036606 | Quick-detach vehicle-mounted auger driver The present invention provides a device useful for boring holes into the earth, and is especially useful for drilling holes in which fence posts are to be placed. A device according to the invention is completely self-powered, having its own on-board engine which su... | 05/02/2006 |
| 7021374 | Method and apparatus for connecting tubulars using a top drive An apparatus for facilitating the connection of tubulars, said apparatus comprising a winch (15), at least one wire line (4, 5), and a device (2) for gripping the tubular (3), the arrangement being such that, in use, the winch (15)... | 04/04/2006 |
| 7011167 | Device for sealing a drill hole and for discharging drillings or stripped extraction material In a device for sealing a bore hole and discharging drill cuttings and stripped excavation material, including a housing adapted to receive sealing elements and an opening capable of being connected to the bore hole, one side wall of the housing is provided with at ... | 03/14/2006 |
| 7004259 | Apparatus and method for facilitating the connection of tubulars using a top drive An apparatus for facilitating the connection of tubulars using a top drive, the apparatus comprising a supporting member (13) connectable to said top drive (3) characterized in that it further comprises an internal tool (30) for engaging said tu... | 02/28/2006 |
| 6976298 | Methods and apparatus for connecting tubulars using a top drive An apparatus for facilitating the connection of tubulars using a top drive, the apparatus comprising a stator attachable to said top drive, and a supporting member for supporting a tool, wherein means are provided to allow substantially horizontal movement of said s... | 12/20/2005 |
| 6932546 | Drill stand for a portable core drill A drill stand for a portable core drill has a base plate (2) with an elongate opening (3) for securing the base plate (2) on a workpiece and with at least one reinforcing chamber (8a, 8b) that is closed along its edge... | 08/23/2005 |
| 6920926 | Top drive well casing system A well casing system is disclosed for the handling and make-up of casing on a drilling rig in conjunction with a top drive is disclosed. The system comprises a top drive, a casing make-up assembly, links, link tilts, and transfer and lifting elevators. The operator ... | 07/26/2005 |
| 6920931 | Control line guide When the spider slips are open, the control line can be moved toward the pipe string, can be clamped to the pie string and string and line can be lowered into the well. When the pipe connector approaches the spider, the spider slips need to be set. To move the contr... | 07/26/2005 |
| 6832658 | Top drive system A torque track in conjunction with parallelogram links and a hydraulic cylinder is used for multiple purposes in a drilling rig top drive system. The torque track is rotationally mounted within the mast between the crown and the rig floor and pivotally mounted by th... | 12/21/2004 |
| 6715565 | Subterranean boring machine A drive mechanism for a subterranean boring machine includes a drive motor, primary and secondary drive wheels, a drive sprocket and an idler sprocket attached to the primary and secondary drive wheels, respectively, and a chain operatively extending between the dri... | 04/06/2004 |
| 6662880 | Traveling rolling digger for sequential hole drilling and for producing sequential cultivated spots in soil A traveling rolling digger for sequential hole drilling or for producing sequential cultivated spots in soil. The traveling rolling digger includes at least one drilling shaft which is rotatable by a drive mechanism about a longitudinal shaft axis and has... | 12/16/2003 |
| 6640911 | Device for connecting a tool to a drive A device for connecting a tool to a mechanical drive contains as the coupling element a spring washer coupling or clutch, which is made in one piece from metal and at least in the rotation direction has a limited resilience. Use is made thereof for preven... | 11/04/2003 |
| 6622796 | Apparatus and method for facilitating the connection of tubulars using a top drive An apparatus for facilitating the connection of tubulars using a top drive, the apparatus comprising a supporting member (13) connectable to said top drive (3) characterized in that it further comprises an internal tool (30) for engaging said tubular (7) ... | 09/23/2003 |
| 6464020 | Apparatus and method to drill and lift core-drilled specimens from an aggregate medium An single apparatus to drill and lift core specimens from an aggregate field includes a frame structure that can be deployed to a workface and is adapted to hydraulically deploy a rotating core drilling bit upon that workface to cut a core specimen from t... | 10/15/2002 |
| 6412576 | Methods and apparatus for subterranean drilling utilizing a top drive Apparatus and methods for a top drive unit for drilling of hydrocarbon wells, with the top drive including a channel or passage allowing for passage of drill pipe through the top drive to provide ease of operation during drilling operations. With this pas... | 07/02/2002 |
| 6155359 | Vehicle mounted post hole digger A vehicle mounted post hole digger for digging post holes in the ground. The vehicle mounted post hole digger includes a spaced apart pair of adjustably extendible support braces with base pivotally coupled to forwards ends of the support braces. A first ... | 12/05/2000 |
| 6089334 | Invertible auger An earth auger has a center shaft and a helical flighting extending along the axis of the shaft. The flighting and the center shaft have opposite ends that are identical in construction, so that the auger can be driven from either end by a power unit.... | 07/18/2000 |
| 6056065 | Motorized auger A motorized auger comprising a frame with a pair of handles secured to the frame. Each handle having a proximal and a distal end thereto and a pair of downwardly depending support elements. A first wheel is secured to the distal ends of the pair of handle... | 05/02/2000 |
| 5924500 | Steerable boring machine With a boring machine having a multistrand rod assembly (3) for producing boreholes in the ground, comprising a rotatable inner rod (29), an outer rod (19), at least one steering and digging tool (5; 33, 35, 36) driven by the inner rod and having an axis ... | 07/20/1999 |
