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| Number | Title | Issue Date |
| 7999208 | Robot control unit for controlling tandem arc welding system, and arc-sensor control method using the unit A robot control unit for controlling a tandem arc welding system, which has a welding torch, a robot for weaving the welding torch, a leading electrode power supply, and a trailing electrode power supply, includes a leading electrode detection section and a trailing... | 08/16/2011 |
| 7361411 | Hardfacing alloy, methods, and products Disclosed is a hardfacing alloy capable of withstanding service abrasion of the order of silicious earth particles and weldable on industrial products, such as tool joints and stabilizers used in oil and gas well drilling, and other industrial products. The hardfaci... | 04/22/2008 |
| 7355145 | Arc welding robot The invention provides an arc welding robot capable of collecting and displaying waveform data in a welding operation without using an external device. The arc welding robot comprises: a manipulator 101 including a welding torch 124 mounted thereon; a ... | 04/08/2008 |
| 7330774 | Reception system An operation control unit of a reception system includes a visitor ID information DB for storing therein visitor comparison information and visitor ID information including a phone number of a receiver of a visitor; an identifying unit for identifying the visitor wh... | 02/12/2008 |
| 7321808 | Robot and multiple robot control method When braking of a motion of a part of a first robot is assumed to be started at points in time, a first stop position of the first robot part is estimated at each point in time. When braking of a motion of a part of a second robot is assumed to be started at the poi... | 01/22/2008 |
| 7291807 | TIG welding equipment and TIG welding method TIG welding equipment includes a first articulate robot having a first arm, a TIG torch holding member for holding a TIG torch at a specified position so that the TIG torch can perform a weaving operation, and a filler wire guide moving member formed so as to surrou... | 11/06/2007 |
| 7253637 | Arc fault circuit interrupter system In order to determine whether arcing is present in an electrical circuit, a sensor signal corresponding to current in said electrical circuit is processed. The sensor signal is filtered to determine the presence of noise in a predetermined frequency range and produc... | 08/07/2007 |
| 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 |
| 7151656 | Arc fault circuit interrupter system A system for determining whether arcing is present in an electrical circuit in response to a sensor signal corresponding to current in the circuit includes a circuit for analyzing the sensor signal to determine the presence of broadband noise in a predetermined rang... | 12/19/2006 |
| 7148443 | Consumable guide tube The invention is a consumable guide tube comprising a thin first elongated strip, a second elongated strip and a plurality of insulators. The thin first elongated strip has a front face and a back face and the front face has at least one longitudinal channel. The se... | 12/12/2006 |
| 7136265 | Load recognition and series arc detection using bandpass filter signatures A method and system for determining whether arcing is present in an electrical circuit includes sensing a change in an alternating current in the circuit and developing a corresponding input signal, analyzing the input signal to determine the presence of broadband n... | 11/14/2006 |
| 7114881 | Method and apparatus for welding pipes together A method of laying a pipeline (6) underwater includes the steps of holding an end of a pipeline (6), providing a pipe section (5) for extending the pipeline (6), arranging the pipe section (5) adjacent to the end of pipeline (6 | 10/03/2006 |
| 7114754 | Mobile construction support vehicle A vehicle for use in the construction trade to support steel building fabrication and support issues. In the preferred embodiment, the vehicle comprises a trailer, a mobile type unit containing enough equipment to handle most tasks used on a construction site, parti... | 10/03/2006 |
| 7068480 | Arc detection using load recognition, harmonic content and broadband noise A method of determining whether arcing is present in an electrical circuit includes sensing a change in current in the circuit and developing a corresponding input signal, analyzing the input signal to determine the presence of broadband noise in a predetermined ran... | 06/27/2006 |
| 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 |
| 6927360 | Method for continuously regulating or tracking a position of a welding torch or a welding head The invention describes a method of continuously controlling and tracking a position of a welding torch (10) and welding head relative to a weld seam to be produced on a workpiece (16), whereby the welding torch (10), spaced at a distance apart ... | 08/09/2005 |
| 6845295 | Method of controlling a robot through a singularity A method of controlling a robot (32) includes the steps of selecting an initial configuration from at least one of a first, second, and third sets to position a TCP at a starting point (44) along a path (33) and selecting a final configuration d... | 01/18/2005 |
| 6781083 | Weld overlay system A process for applying weld overlay material to a tube with a single pass of a weld head. A gas tungsten arc welding process with high frequency wave pulse current is preferably used to apply the overlay material. The overlay material is preferably in the form of we... | 08/24/2004 |
| 6737601 | Method and device for welding together two bodies A method and apparatus for welding together two pipes or plates. The bodies to be welded are placed mutually in line against each other while leaving clear a weld groove. The weld groove is filled with more than one welding layer by a welding torch moved in a longit... | 05/18/2004 |
| 6693259 | Self-diagnosis type welding carriage control system for automatically controlling welding conditions and implementing oscillation motion Disclosed herein is a self-diagnosis type welding carriage control system for automatically controlling welding conditions and implementing an oscillation motion. The welding carriage control system includes a main controller for a database, a remote cont... | 02/17/2004 |
| 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 |
| 6617548 | Mobile device for automatic pipe welding A device for butt welding pipes (99A-B) comprises: a guide element (17) which can surround and can be fixed to one of the ends of the pipes, and a carriage (1) movable along the said guide element and having powered means (25) for moving it along the guid... | 09/09/2003 |
| 6584378 | Device and a method for determining coordinates and orientation When determining coordinates of a point of an object (2) in a reference system of coordinates and the orientation of the object in the space in a measuring position assumed by the object, the object is moved from a start position having known coordinates ... | 06/24/2003 |
| 6548783 | Apparatus for electric arc overlay welding An arc welding overlay apparatus that comprises a welding head carriage adapted for movement on a track, an index arm mounted for movement in a direction substantially transverse to the track, a slide mounted for movement in a direction substantially tran... | 04/15/2003 |
| 6531683 | Boom control system A boom control system having rotational and elevation control of the boom. The boom is utilized in a welding apparatus utilizing a conduit to deliver the welding material to the work piece. The elevation of the boom may be adjusted by discrete steps, with... | 03/11/2003 |
| 6429404 | Method and apparatus for determining seam tracking control of arc welding A tracking monitoring device and a tracking control device are provided for determining the state of how a weld line is tracked under arc sensing control to let the oscillating center of a welding torch track a correct weld line along the groove center ba... | 08/06/2002 |
| 6429405 | Apparatus and method for welding pipes together Two pipes are arranged, when forming a deep sea pipeline, end to end thereby defining a circumferentially extending narrow angled (less than 10 degrees) groove. Two arc welding torches are arranged directly adjacent to each other on a single carriage that... | 08/06/2002 |
| 6407364 | Method and system for welding railroad rails A method and system of depositing molten metal from an advancing welding wire to form a root pass of weld metal in the bottom of a gap between first and second metal members having generally flat base elements joined by a metal backing plate extending bet... | 06/18/2002 |
| 6374158 | Robotic laser pointer A robotic machine includes a machine tool removably supported in a mount for following a programmable path over a workpiece. A calibration pointer includes a housing configured like the tool for being supported in the mount, and a laser is affixed in the ... | 04/16/2002 |
| 6327516 | Operation terminal and remote operation system for a robot Parameters of a robot is displayed on a display device of an operation terminal in a manner that parameters having been changed and parameters having not been changed of all the parameters are displayed in a distinguished manner such that the background c... | 12/04/2001 |
| 6297473 | Arc welding method In order to provide a welding system capable of freely controlling dispersion and concentration of arc heat input at a groove face of base material, and ensure melting of the base material while restraining excessive weld heat input, in arc welding using ... | 10/02/2001 |
| 6297472 | Welding system and method A welding system and method of use which allows a single welding operator to perform quick, easy and high quality vertical welds. The welding system comprises a welding fixture with a pair opposing, positionally adjustable welding shoes, and lock screws f... | 10/02/2001 |
| 6285920 | Method of robot teaching with motion constraints A method for teaching movements to a robot (12) is disclosed. The robot (12) includes a fixture (14) for cooperating with a workpiece (16), at least one sensor (18) for sensing a spatial relationship of the robot fixture (14) relative to the workpiece (16... | 09/04/2001 |
| 6274845 | Method and apparatus for electric arc welding An electric arc welding apparatus for depositing molten metal from an advancing welding wire into a weld puddle in an open root between two juxtapositioned plates where the root extends in a welding path and is formed by converging walls terminating in ge... | 08/14/2001 |
| 6201216 | Method and system for welding railroad rails A method and system of depositing molten metal from an advancing welding wire to form a root pass of weld metal in the bottom of a gap between first and second metal members having generally flat base elements joined by a metal backing plate extending bet... | 03/13/2001 |
| 6166347 | Method and system for welding steel rails A method for gas shielded arc welding steel rails spaced from each other to define a transverse gap comprising the steps of positioning an elongated steel barrier plate in the gap at the bottom of the spaced rails and filling the gap above the barrier pla... | 12/26/2000 |
| 6150631 | Method of detecting root gap and arc welding method using the former The weld seam tracking and the welding torch height are controlled, the waveform of the welding voltage or the welding current of the arc is detected, the waveform of the above-described welding voltage or welding current under an appropriate welding cond... | 11/21/2000 |
| 6124566 | Automatic tracking process of the joint bevel for the butt welding of pipes and equipment for the embodiment of the process A process for automatically tracking a joint bevel during butt welding of coaxial pipes includes the steps of observing electrical parameter values relating to the voltage, current and voltaic arc impedance and comparing these values with preset sample va... | 09/26/2000 |
| 6064168 | Method of controlling robot movement A method of controlling movement of a robot includes moving only the wrist portion about two of the wrist axes to achieve a repeated and cyclical movement, such as a back-and-forth movement of the tool relative to a preselected path. Since only the wrist ... | 05/16/2000 |
| 6000598 | Method for correcting the direction of weaving of a welding torch with respect to a welding centerline A method for correcting the welding path of a welding torch which weaves from side to side while proceeding along the welding path is disclosed. The method comprises the steps of: determining the center of weaving of the welding torch with respect to a we... | 12/14/1999 |
