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| Number | Title | Issue Date |
| 7921940 | Casing hammer power swing-out apparatus for drilling rig A swing-out apparatus for a drill rig, typically for drilling water wells. It includes a sled which is formed to be driven vertically on a drill mast of a vehicle carrying the sled, a casing hammer, and a hinge securing the casing hammer on the sled. To provide for ... | 04/12/2011 |
| 7556107 | Construction machine for foundation construction The invention relates to a construction machine, in particular a drilling and/or pile driving device, for foundation construction comprising a chassis and a leader arranged on the chassis for the longitudinally displaceable guidance of a drive head. Provision is mad... | 07/07/2009 |
| 7503409 | Earth drilling rig having electronically controlled air compressor In an earth drilling rig in which an air compressor and one or more hydraulic pumps are driven by the same engine, the intake throttle of the compressor is controlled by an electronic controller having a proportional integral derivative control. The controller minim... | 03/17/2009 |
| 7404455 | Automatic SPT monitor An apparatus is used with an impact hammer penetration assemble such as standard penetration test (SPT) in geotechnical engineering. The impact hammer penetration assembly comprises a penetration sample, a series of rods coupled together and an impact hammer apparat... | 07/29/2008 |
| 7350593 | Electronically controlled earth drilling rig An electronic control, for automated earth drilling using a pneumatic hammer-operated bit, preliminarily weighs a drill string, and, during drilling, automatically maintains a desired weight on the bit, and also maintains a constant rate of drilling progress by regu... | 04/01/2008 |
| 7322425 | Method of generating stress pulse in tool by means of pressure fluid operated impact device, and impact device A method of generating a stress pulse, and an impact device. In the method, pressure fluid is fed as pressure pulses to a working chamber residing between the frame of the impact device and a tool such that the resulting force presses the tool towards the material t... | 01/29/2008 |
| 7270182 | Earth loop installed with sonic apparatus A method for installing a heat exchange pipe loop in a borehole, the method, in at least certain aspects, including drilling a borehole with a sonic drill system having a head and casing connected thereto, a drill apparatus on a lower end of the casing movable by th... | 09/18/2007 |
| 7252154 | Percussion device with a transmission element compressing an elastic energy storing material A percussion device for a rock drilling machine or the like, which comprises means for providing an impact, i.e. a stress pulse, to a tool connected to the percussion device. The means for proving the stress pulse include a stress element (4) of liquid, which... | 08/07/2007 |
| 7249629 | Multi-function well servicing vehicle A mobile vehicle for inserting jointed pipe into a well, having a derrick and hydraulic rams to raise and lower same, adapted to conduct additional operations which will allow a well to be completed by this vehicle alone. Three winches are provided, a first to raise... | 07/31/2007 |
| 7237625 | Device for simulataneously casing a hole while drilling A driving device for installing a pipe or casing, without the use of hydraulic or pneumatic means, by capturing the rotational motion of the drill string. The driving device is placed at the top end of the pipe being (42) installed and the drill string (2 | 07/03/2007 |
| 7234548 | Hydraulic rotary-percussive hammer drill A hydraulic rotary percussive hammer drill includes a body containing a reciprocating percussion piston sliding under the effect of a main hydraulic supply circuit, this main circuit also being intended to cause the sliding of a roughly annular abutment piston house... | 06/26/2007 |
| 7195081 | Method and device for boring holes in soil or rock In a method and device for boring or drilling, in particular percussion drilling or rotary percussion drilling, holes in soil or rock, wherein a borehole is formed by a percussive and/or rotary movement carried out by a drill bit (2) mounted on a drill rod as... | 03/27/2007 |
| 7152700 | Dual wall drill string assembly A coil tubing or jointed dual wall drill string assembly for subsurface drilling. The drill string assembly includes a metallic outer tube having an outer tube first end and an outer tube second end opposite the outer tube first end. The assembly also includes a fle... | 12/26/2006 |
| 7150324 | Method and apparatus for riserless drilling An offshore riserless drilling system drills a subsea borehole from a platform and through a cased borehole. The system comprises a lightweight drill string suspending a bottomhole assembly and extending from the platform downwardly through a depth of water into the... | 12/19/2006 |
| 7128166 | Planting tool A planting tool having a handle, an auger receiver and a basket. The auger receiver has an upper opening and a lower opening. The auger receiver is attached to the handle. The auger receiver is adapted to receive an auger. The basket has an upper opening and a lower... | 10/31/2006 |
| 7096963 | Swing arm crane and method An apparatus for lifting and moving a load. The apparatus comprises a lift frame having a first and second vertical member that are connected so that a working window area is defined. The apparatus further comprises a rotary actuator mounted on the first vertical me... | 08/29/2006 |
| 7083363 | Pier installation system and method A device for repairing the foundation of a building comprising a base frame being defined by a front end and a rear end. The front end and rear end are supported by wheels. A plate member is transversely mounted upon the base frame proximately near the rear end. A c... | 08/01/2006 |
| 7073612 | Surge device for air drilling A surge device providing a vent for bleeding pressure off an air drilled well and providing connectors for surge lines in the blooie line. The surge device has a hollow, abrasion resistant, tapered chamber into which two surge lines and the blow down line enter the ... | 07/11/2006 |
| 7044216 | Large diameter flush-joint pipe handling system An elevator for assembling a plurality of a large diameter pipe joints into a pipe string with a drilling rig is disclosed. The first one of a number of large diameter pipe joints is adapted to threadingly engage another large diameter pipe joint. The elevator is de... | 05/16/2006 |
| 7040417 | Drilling systems The present invention discloses, in certain aspects, systems and methods for producing cyclical impacts and, in certain aspects for moving a drilling apparatus for drilling a borehole in a formation, the system in certain embodiments including a housing with a longi... | 05/09/2006 |
| 7025140 | Large particulate removal system A choke for removing large diameter particulate matter from an oil or natural gas well includes a housing having a chamber with an integral solids receptacle. The chamber is in communication with a flow stream outlet and a flow stream inlet. The flow stream inlet is... | 04/11/2006 |
| 7013996 | Impact device An impact device for a rock drill. The rock drill includes a tool and a mechanism for delivering a stress pulse to the tool. That mechanism includes an impact element supported to a frame of the drill, and a mechanism for subjecting the impact element to stress and ... | 03/21/2006 |
| 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 |
| 6908262 | Systems and methods for driving large diameter caissons A system for driving a large diameter caisson into the ground, comprising a crane assembly, a plurality of vibratory devices, a clamp assembly, a suspension assembly, and a timing system. Each vibratory device generates a vibratory force. The clamp assembly rigidly ... | 06/21/2005 |
| 6907934 | Universal top-drive wireline entry system bracket and method A bracket and tension rod device is mounted to a top-drive dolly to carry the weight of a sheave wheel assembly. The device is deployed by connecting the sheave wheel assembly to a rigid dolly arm with an adjustable tension rod to relieve a gooseneck from adverse te... | 06/21/2005 |
| 6874540 | Pulsation dampener apparatus and method A pulsation dampener apparatus and method for dampening pulses within a fluid flow line during well drilling operations. The pulsation dampener apparatus comprises a cylindrical body having an annular chamber, a piston slidably disposed within the annular chamber, a... | 04/05/2005 |
| 6732816 | Method of forming a trenchless flowline The present invention is an improved method of installing a flowline below the surface. The method includes the steps of establishing first and second sight relief holes along a linear path, positioning a directional drilling machine on the surface, boring a first p... | 05/11/2004 |
| 6672805 | Systems and methods for driving large diameter caissons A system for driving a large diameter caisson into the ground, comprising a crane assembly, a plurality of vibratory devices, a clamp assembly, a suspension assembly, and a timing system. Each vibratory device generates a vibratory force. The clamp assemb... | 01/06/2004 |
| 6626248 | Assembly and method for jarring a drilling drive pipe into undersea formation A method for driving a drive pipe into a subsea formation, the method being comprised of the following steps: suspending the drive pipe from a drill string; moving at least one mass in a direction having an upward component and within the drive pipe; acce... | 09/30/2003 |
| 6557652 | Method for performing ground or rock work and hydraulic percussion device Two working pistons (AK1, AK2) strike on the anvil (10) of a drill device or a rock breaking device. One working piston (AK1) is a solid piston, while the other (AK2) is an annular piston. Both working pistons can work at the same or substantially the sam... | 05/06/2003 |
| 6536541 | Boring unit for pile foundations Boring unit for pile foundations presenting a tracked vehicle facing the mouth of a hole, a mast (5) which is supported by the tracked vehicle, a rotary table (6) which is slidingly mounted along the mast (5), and at least one excavation element (7) which... | 03/25/2003 |
| 6386294 | Hole making system A hole making system for efficiently cutting a hole into a ground surface and for allowing effective removal of the plug. The inventive device includes a cutter assembly, a tamper assembly slidably positioned within the cutter assembly, and a hammer assem... | 05/14/2002 |
| 6371222 | Hammer device A hammer device has a machine housing (1) with a hammer piston (2) movable to-and-fro. The to-and-fro movement of the hammer piston is controlled by a valve body (6) movable to-and-fro in the machine housing. The valve body, via a channel (7), alternative... | 04/16/2002 |
| 6286613 | Impact method and the device used in standard penetration test A point-contact impact method used in the Standard Penetration Test (SPT) is disclosed. The method aims firstly to have the impact between the drop hammer and the anvil in the form of point contact and secondly to center the impact contact on the anvil fa... | 09/11/2001 |
| 6234719 | Mobile combined drilling and piling machine and method for tubular foundation with machine A method in or relating to piling of e.g. tubular bases which are placed and, possibly, casted within a hole drilled out in earth mass in ground or the like is described. One uses a generally known drilling rig, in which a bit is assigned a drilling hamme... | 05/22/2001 |
| 6202763 | "Twin-impact" double-blow drilling apparatus A drilling apparatus 1 having a twin-impact system can work continuously with a shank end 5 is provided with a compensation ring 10 on the rotary impact side, which has a material with hardness that is lower than that of the material of the pipe and strik... | 03/20/2001 |
| 6029757 | Casing hammer assembly for cable tool drilling apparatus A casing hammer assembly for a cable tool drilling apparatus and a cable tool drilling apparatus employing the casing hammer assembly. The casing hammer assembly includes a hammer housing which is positioned on a casing pipe and having a central aperture ... | 02/29/2000 |
| 5984027 | Engine-driven breaker An engine-driven breaker which is capable of providing a breaking force equal to that of a hydraulic or pneumatic breaker even with a small engine and which is small and light and easy to handle and has a simple construction enabling it to be manufactured... | 11/16/1999 |
| 5975221 | Machine for horizontal percussion boring In a machine for horizontal or inclined percussion boring in the ground having a percussion boring string which has an oblique-face boring head at one end and an impact mechanism at the other end, the impact mechanism is mounted beside the rotary drive in... | 11/02/1999 |
| 5662179 | Hole-making device A device for making holes in the ground, such as for a golf course, has a tubular cutter having an open first end for insertion into the ground, and an opposite second end from which a guide extends. A percussion weight is guided for movement along the gu... | 09/02/1997 |
