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| Number | Title | Issue Date |
| 7386927 | Apparatus to roll, cut, weld, and form tank car outer jackets A system and method of fabricating tank car outer jackets are provided that include supporting a plurality of coils of sheet metal on a plurality of coil supports such that the central longitudinal axes of the plurality of coils are generally parallel to a central l... | 06/17/2008 |
| 7246736 | Supplying shielding gas A flexible articulate tubular device has a shank, a plurality of pivot rings, and a terminus with heat sensors and a fiber optic device. The flexible articulate tubular device is initially positioned, either manually or automatically, near a target weld path with th... | 07/24/2007 |
| 7214899 | Process for the continuous production of longitudinally welded metal tubes A process for the continuous production of longitudinally welded metal tubes where a metal strip (1) is drawn from a strip supply and gradually shaped into a slit tube in a shaping station (2). The slit tube is welded in a welding system (4) alo... | 05/08/2007 |
| 7161115 | Magnetically impelled arc butt welding of pipelines The present invention is a method and a vehicle-mounted apparatus (30) for laying pipelines in which adjacent pipe (17, 28) are joined by the technique of magnetically impelled arc butt welding (MIAB). A MIAB welding head (13) having a welding a... | 01/09/2007 |
| 7057131 | Stationary welding device and method for longitudinal welding of profiles A method and a device for the longitudinal welding of profiles (2,5, 13) is provided in which a profile (13) that is to be provided with a weld seam (22, 23) is guided through a welding device (1), and in the welding device (1) a w... | 06/06/2006 |
| 7057137 | Orbital welding internal pressure control The present invention is generally comprised of a tube adaptor, a chamber, a chamber pressure sensor, a calibration pressure sensor, an iris valve, an iris valve drive means, and a control and data processing means. In a calibration mode, the calibration pressure se... | 06/06/2006 |
| 7048174 | Adaptable spring force clamping apparatus and methods Adaptable spring force clamping apparatus and methods are disclosed. In one embodiment, an apparatus includes at least one elongated member adapted to be positioned proximate to a surface of a work piece. The elongated member includes first and second end portions a... | 05/23/2006 |
| 7044223 | Heater cable and method for manufacturing A method for manufacturing an electrical cable provides an electrical cable suitable for use in heating wells. An elastomeric jacket is extruded over insulated conductors. A stainless steel plate is rolled around the jacket to form a cylindrical coiled tubing having... | 05/16/2006 |
| 7032809 | Seam-welded metal pipe and method of making the same without seam anneal An apparatus and method for making a seam-welded steel pipe free of untempered martensite without seam anneal. The method includes selecting a steel containing a carbon concentration below a predetermined level, for example, 0.14% or 0.12% by weight. The method also... | 04/25/2006 |
| 7028882 | Process and apparatus for boiler tube panel welding and straightening An apparatus and process for depositing an overlay weld on a boiler tube panel comprising a plurality of tubes with adjacent tubes joined together with membranes therebetween, and then straightening the panel in response to bowing that occurs as a result of depositi... | 04/18/2006 |
| 6953909 | External pipe welding apparatus The invention relates to the field of automated welding, and more particularly, to an automated, gas metal arc welding apparatus for externally welding abutting sections of pipe. The apparatus has a motorized main carriage for travelling circumferentially about one ... | 10/11/2005 |
| 6919528 | Welding machine and welding method for energy welding of cylinder members In a welding machine and welding method, for welding cylinder members together about an outside diameter, which prevents the cylinder members from being deformed and corrects the deformation of a portion to be welded, a laser beam, generated by a laser generator, is... | 07/19/2005 |
| 6909068 | All-terrain undercarriage A moveable undercarriage for supporting and moving a welder over a ground surface having a base to support the welder, a front and rear axle secured to the base each having two wheels rotatably secured to the axles, and a push bar secured to said base to move the ba... | 06/21/2005 |
| 6657161 | External pipe welding apparatus The invention relates to the field of automated welding, and more particularly, to an automated, gas metal arc welding apparatus for externally welding abutting sections of pipe. The apparatus has a motorized main carriage for travelling circumferentially... | 12/02/2003 |
| 6417488 | Internal metal pipe welding apparatus and monitoring system A metal pipe inner surface weld-mounting apparatus having a monitoring device is constituted by an arm, a horizontal torch, a mirror, a camera and a monitoring device. The arm has a supported base end portion, which is horizontally extended. The horizonta... | 07/09/2002 |
| 6414265 | Method and apparatus for drawn arc welding with magnetically impelled arc A method and apparatus for drawn arc welding includes the step of applying a magnetic field transversely to the arc to impel the arc along the welding gap. The invention permits tubular components to be welded using drawn arc welding, but is useful in wel... | 07/02/2002 |
| 6355899 | Tube clamping assembly A tube clamping assembly comprising a first portion having a base and a clamping device carried on the base, and a second portion having a base and a clamping device carried on the base. The first and second portions are coupled to each other such that th... | 03/12/2002 |
| 6188037 | Welded high-strength steel structures and method of manufacturing the same The present invention is a welded high-strength steel structure having a TS of not less than 900 MPa and excellent low-temperature toughness and a method of manufacturing the steel structure. The base steel is formed of a mixed structure of martensite and... | 02/13/2001 |
| 6066823 | Semiautomatic tube welding apparatus The present invention relates generally to an apparatus and method for performing tube-to-tubesheet welding within box headers and, in more particular, to a GTAW welding gun that has a long generally tubular barrel which is small enough in diameter to pas... | 05/23/2000 |
| 6060688 | Device for internally butt-welding pipes A device for internally butt-welding pipes, of the type comprising a support and guide frame (2) for an annular welding member (3), rotatable coaxially to the pipes (1) to be welded and carrying a plurality of welding units (4) each comprising support mea... | 05/09/2000 |
| 6060678 | Gas shield strip clad welding system A gas shield strip cladding welding system including a workpiece, a strip of welding material, an enclosure having an opening through which the strip of welding material passes, a feeder for controllably passing the strip of welding material into the encl... | 05/09/2000 |
| 5981906 | Method of welding the ends of pipe together using dual welding wires A new system for welding sections of pipe together to form a long, continuous pipeline. A welding bug is mounted on a guide track which goes around the circumference of the pipe. The welding bug is provided with a wire feeder, a motor to drive the wire fe... | 11/09/1999 |
| 5910258 | Weld head assembly A weld head assembly which, in one embodiment, includes a mounting ring subassembly and a faceplate subassembly is described. The mounting ring subassembly includes a mounting ring configured to be mounted to one of the pipes to be welded. At least one mo... | 06/08/1999 |
| 5824989 | Method to control starting and stopping a plasma arc welding keyhold An improved plasma arc welding arm method and apparatus for keyhole welding rotating workpieces has an arcuate gear track supporting a corresponding arcuate geared cart bearing a plasma arc welding torch prevents voids in keyhole weld starts and finishes.... | 10/20/1998 |
| 5648001 | Welding method and clamping device for steel reinforcements A welding method for steel reinforcements, wherein electric current flows through the reinforcements, an electroslag pool formed from a solder melted by an electric arc generates a lot of heat to melt the reinforcements, pressure is applied to combine the... | 07/15/1997 |
| 5534676 | System for automatically controlling weld material beading in orbital welding processes for medium- and large-size pipes The system comprises: a distance sensing device for sequentially acquiring, during the welding process or before it, individual transverse profiles of the welding gap by gauging its various depths; electronic units for parametrically reconstructing, by co... | 07/09/1996 |
| 5524813 | Seam welding apparatus and method A welding apparatus and method is provided for automatically welding a stack of two or more metal tubes together. The tubes are stacked such that there is a pair of opposed longitudinal interfaces (or seams) between each tube in the stack. The welding app... | 06/11/1996 |
| 5435478 | Welding apparatus and method A method and apparatus for use in welding pipe. The apparatus includes means for viewing the interior of the pipe, means for establishing a predetermined atmosphere in the weld zone and means for clearing liquid from the interior of the pipe.... | 07/25/1995 |
| 5347101 | Automatic tracking system for pipeline welding A system for automatically tracking a surface for performing a welding operation comprises a frame and pair of ring gears movably mounted to the frame. The ring gears are spaced apart from each other. Three weld heads are movably mounted to each ring gear... | 09/13/1994 |
| 5310982 | T-joint welding fixture A method and apparatus for welding a branch tube to a header tube includes a fixture having a pair of clamps for supporting the fixture on the header tube. A welding head on the fixture includes a clamp to hold the branch tube in place relative to the hea... | 05/10/1994 |
| 5304776 | System for welding pipes An automatic welding system uses an anti-gravitational welding controller to minimize or eliminate the undercutting and concavity of the roots of the welds caused by gravitational effects. The pressure within the pipes to be welded is continually changed ... | 04/19/1994 |
| 5235152 | Device for flooding a weld seam between two pipes to be welded with gas A device for flooding a weld junction between two devices with a protective gas has a double wall body received in the pipes and bridging the junction with sealing rings received in end chambers of the body braced against inner surfaces of the pipe. An in... | 08/10/1993 |
| 5227601 | Adjustable welding torch mounting Automatic welding apparatus of the type comprising a carriage self-propelled along a guide track encircling end-to-end adjoining metal tube sections through a welding pass therearound for forming a weld bead joint therebetween is provided with a welding h... | 07/13/1993 |
| 5217156 | Device for hindgas coverage in tube welding A device for hindgas coverage in welding tube pieces (2,3) together comprises two sealing devices (5,6) connected by a rod (7). The sealing devices comprise a first web part (10) with sealing means (8) and a supply duct (11) for hindgas, and a second web ... | 06/08/1993 |
| 5212363 | Torch for removing steam generator tubes A torch assembly for TIG relaxing an inner surface of a tube to be removed from a tube sheet which comprises a conductive base containing passages for cooling water and for inert gas. A sheath is rotatably mounted to the base and contains a drive shaft fi... | 05/18/1993 |
| 5191185 | Girth and seal welding apparatus A welding apparatus is disclosed for seal welding closed the bore of a sealing plug which is positioned adjacent the end of a hollow tube and where the bore defines an axis in communication with the tube. The apparatus includes a head with an end stop mem... | 03/02/1993 |
| 5187343 | Purge block for pipe welding A purge block with non-inflatable, disc-like seals removably mounted on either end of an elongate tube. In one embodiment, the tube is rigid and hollow and forms part of a conduit for argon or other inert gas through one of said seals to a set of discharg... | 02/16/1993 |
| 5148000 | Distributed processing control system for automatic welding operation An automatic welder is used in an internal welder unit which travels along the interior of a pipeline and provides the interior weld passes at the junction of abutting pipe joints. The internal welder unit has an electronic control system which includes a... | 09/15/1992 |
| 5140123 | Continuous manufacturing method for a metal welded tube and a manufacturing apparatus therefor A continuous manufacturing method for a metal welded tube and a manufacturing apparatus therefor, which obtains a tubular member by continuously passing a metal band coil through molding rollers, guides the tubular member to abutting rollers to bring the ... | 08/18/1992 |
| 5126526 | Device for hindgas coverage in tube welding A device for hindgas coverage in welding tube pieces (2,3) together comprises two sealing devices (5,6) connected by a rod (7). The sealing devices comprise a first web part (10) with sealing means (8) and a supply duct (11) for hindgas, and a second web ... | 06/30/1992 |
