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| Number | Title | Issue Date |
| 7968816 | Weld fairing apparatus and welding method using the same A weld fairing apparatus and a welding method using the apparatus effectively prevent a weld metal zone from forming a humping bead. The welding method includes: butting first and second object pieces together; heating the butted first and second object pieces using... | 06/28/2011 |
| 7423233 | Butt welding device and butt welding method A butt welding apparatus and a butt welding method where end faces of at least one plate member to be welded are butted to each other to form a butt portion, and butt welding can be performed on respective plate members which have various thickness sizes on both sid... | 09/09/2008 |
| 7385156 | Press-fit joint structure A forced-insertion welded structure is provided which is formed by welding members making up a metal component and which is easy to manufacture and has low cost, a good finish precision and a high bonding strength. The forced-insertion welded structure compri... | 06/10/2008 |
| 7368035 | Method for brazing and adhesive bonding An improved method for joining together the edge portions of first and second panels includes applying a heat curable adhesive along the edge portion of the first panel and then abutting the edge portion of the second panel with the edge portion of the first panel s... | 05/06/2008 |
| 7348523 | Method of induction weld forming with shear displacement step A shear-assisted solid state welding method for joining of metal parts, involves a first step of heating opposing surfaces in a non-passivating environment to a temperature in the hot working temperature range of the metal. A second step involves bringing the opposi... | 03/25/2008 |
| 7307235 | Butt welding apparatus, butt welding method, and butt welded product A butt welding apparatus, a butt welding method, and a product manufactured by the butt welding method involves two electrode rollers disposed on both the front and back sides of a thick sheet member and a thin sheet member whose end surfaces are butted. The electro... | 12/11/2007 |
| 7282663 | Forge welding process An automated method for forge welding tubulars including heating the tubular ends to be joined in a welding chamber while the heated tubular ends are maintained aligned and parallel relative to each other and at a small spacing, whereupon the heated tubular ends are... | 10/16/2007 |
| 6744004 | Method for welding a differential housing A method of welding an axle housing surface to a blank surface includes generated heat in one of the two components. Heat is generated from at least one of these surfaces at their interface sufficient to weld them together. The surfaces are then applied together. | 06/01/2004 |
| 6627840 | Method and means for processing butt welds A method and machine for deburring the burr which is formed when wires are butt welded is disclosed. The machine comprises a deburring head which has a pair of opposed deburring rollers mounted thereon. Each of the rollers has a milled surface formed ther... | 09/30/2003 |
| 6572003 | Seam welding apparatus and seam welding method To provide a seam welding apparatus and a seam welding method that may operate at a low pressure to obtain a suitable overlapped alignment amount. In the seam welding apparatus, a trailing plate clamp moving means is provided with link mechanisms for over... | 06/03/2003 |
| 6491209 | Continuous band manufacture A band saw strip manipulator is arranged to receive a toothed metal strip for welding from a cut to length machine. The strip is moved into the band saw strip manipulator by powered rollers. The strip extends between a first edge detector at one side of t... | 12/10/2002 |
| 6373017 | Continuous hot rolling mill with metal block conveying apparatus A continuous hot rolling mill with a metal block conveying apparatus and a metal block joining apparatus which moves with the metal blocks along the metal block conveying apparatus to conform a joining operation. The metal block conveying apparatus uses r... | 04/16/2002 |
| 6180910 | Force control techniques on a resistance welding machine The present invention is an improved welding technique that provides real-time control of the servo valve to account for the changing conditions of the parts being welded. The present invention may be implemented within any electrical welder having at lea... | 01/30/2001 |
| 6172320 | Welding method for forming chromium oxide passivated film at welded portion An improved method for welding and passivation forms a chromium oxide passivated film over the welded portion during the welding process. In a shielding step, a backshield gas, preferably argon, is flowed around the welding site. In a welding step, an arc... | 01/09/2001 |
| 6169263 | Techniques for adaptive control of force in resistance welding applications The present invention is an improved butt welding technique that provides adaptive control of force that is applied to a part during a welding process to enable a maintained joint resistance across joint. The force may be adjusted to account for the chang... | 01/02/2001 |
| 6031197 | Resistance rail welding device with alignment mechanism A device for welding together elongated work pieces such as railroad track, is provided with controls to eliminate pre-existing angles that exist between each work piece prior to joining.... | 02/29/2000 |
| 5270514 | Method and apparatus for flash butt welding railway rails A welding method and apparatus for flash butt welding adjacent ends of axially aligned railway rails includes a base frame and fixed and movable platens supported on the base frame. The platens support rail sections and are under the control of controller... | 12/14/1993 |
| 5030313 | Apparatus for connecting strips An apparatus for connecting strips, in which a rear end portion of a preceding strip and a front end portion of a succeeding strip are cut and brought into contact to each other so that a butt welding of the contacted portions may be carried out to connec... | 07/09/1991 |
| 4996408 | Proximity switch for use in welding facilities An electronic proximity switch adapted to be operated in a non-contact mode for use in a welding zone of welding facility, with the switch being employed for, for example, controlling welding tongs and/or checking a position of welding electrodes. The ele... | 02/26/1991 |
| 4983805 | Flashless D.C. butt welding electrodes A pair of clamping electrodes for use in flashless D.C. butt welding of aluminum and the like are disclosed. Each clamping electrode is provided with a clamping face for engaging opposed major surfaces of a work piece. The electrodes are configured so tha... | 01/08/1991 |
| 4975556 | Butt welding machine A cylindrical wheel rim blank has a longitudinal seam defined by a pair of longitudinal edge portions each of which is clamped between upper and lower jaws of a respective clamping assembly. The two clamping assemblies are urged laterally together to pres... | 12/04/1990 |
| 4910374 | Welding complex A welding complex in accordance with the invention comprises a machine for resistance butt welding, means for supporting the end part of the pipeline and holding means including a platform reciprocable axially of the pipeline and a plate with a device for... | 03/20/1990 |
| 4885450 | Machine for resistance butt welding of pipes The machine of the invention, intended for resistance butt welding of pipes, comprises two semi-housings mounted externally on the pipes to be welded to the opposite sides of a joint and interconnected by the flash and upset drive, a clamping device mount... | 12/05/1989 |
| 4803330 | Machine for flash butt welding of pipes Disclosed is a machine for flash butt welding of pipes located in the bore of the pipes welded together, a housing (2) whereof is provided with rigidly attached thereto a first supporting disc (3) and a second supporting disc (4) and with a pipe flashing-... | 02/07/1989 |
| 4704512 | Apparatus for butt welding In an apparatus for the butt welding of hollow molding of aluminum with two contact clamps (4, 5), movable toward each other, for the ends of the moldings to be joined together, one contact clamp (4) is fixed at the machine frame, and the other contact cl... | 11/03/1987 |
| 4686346 | Control device for flash-butt resistance welding machine There is proposed a control device for a flash-butt resistance welding mane, which comprises a welding transformer (1) whose primary winding is in series with a welding current pickup (7) connected to an electrohydraulic drive (30) of the moving electrod... | 08/11/1987 |
| 4675495 | Butt welding machine Flash-butt welder in which the piston rod of a pneumatic cylinder is connected to one end of a pivotable lever arm. A pneumatic system sequentially supplies air at two different pressures to the cylinder. Fixed and movable platens, each with a work piece ... | 06/23/1987 |
| 4672165 | Welding apparatus A welding apparatus for welding a trailing end of a preceding strip and a leading end of a subsequent strip including a shear device for cutting them in parallel and a back bar device for supporting the ends of the strips. Provision is made to detachably ... | 06/09/1987 |
| 4649253 | Apparatus for butt welding automotive wheel rim blanks The apparatus possesses work locating fixtures or clamping devices for clamping edge areas of hollow cylindrical blanks as well as a facility for pressing together the mutually confronting edges of axial slits of the blanks. One of the jaws of each work l... | 03/10/1987 |
| 4645897 | Method and apparatus for aligning two work pieces for welding and for weld upset removal A rail alignment device and a shear head are suspended from a trolley running over a rail welding machine. The alignment device comprises structure forming a downwardly-opening bight and carrying locating stops, clamping cylinders and transducers with sen... | 02/24/1987 |
| 4626655 | Method and apparatus for welding rolled bands of finite lengths to form continuous bands during a manufacturing operation The average winding diameter of a finite roller band length wound on a supply coil is increased by having the roller band rewound from the supply coil to a storage coil of a larger than the winding diameter, which encloses the supply coil concentrically. ... | 12/02/1986 |
| 4626647 | Flash welding machine A flash welding machine for butt welding the trailing edge of a preceding metal strip to the leading edge of a following metal strip in a rolling mill or the like. A preceding carriage and a following carriage are provided, movably mounted on a common set... | 12/02/1986 |
| 4542275 | Electrical chain welding machine A machine for electrical resistance welding of chain links has upsetting bars (10) which are engaged against the arcuate ends of a chain link (1). On either side of the welding zone the legs of a link are gripped by pairs of electrodes (12) attached to th... | 09/17/1985 |
| 4535213 | Apparatus for welding in vertical, horizontal and slanting position A welding apparatus includes a mechanical hand assembly suspended from a support assembly rotatably mounted on a movable base. The hand assembly includes a first pair of mechanical hands connected to a hydraulic cylinder and a second mechanical hand coaxi... | 08/13/1985 |
| 4491716 | Method and apparatus for equilizing temperature of pipe sections during solid phase welding In solid phase or pressure welding of adjacent pipe ends wherein a burner ring or other heating element extends circumferentially around the pipes adjacent the joint therebetween, an axial flow of air is directed along the pipe adjacent the weld zone wher... | 01/01/1985 |
| 4484057 | Resistance flash butt welding process monitor The apparatus comprises a current transformer coupled to the welding tranrmer primary and connected with an analog transmitter of the welding current and with a digital transmitter of the duration of short-circuits in the welding circuit, having a memory... | 11/20/1984 |
| 4471203 | Program control device for controlling flash butt welding process Disclosed are welding current pick-ups which are switched into welding circuits. Outputs of these pick-ups are connected to inputs of a logical coincidence unit having its output connected to a control input of a welding program control unit whose output ... | 09/11/1984 |
| 4443686 | Device for arc-welding ferromagnetic workpieces under the control of a magnetic field Two coaxially aligned workpieces of ferromagnetic material, axially separated by a narrow peripheral gap across which a weld seam is to be formed with the aid of an arc moving along that gap, are engaged by holders including at least one set of two or mor... | 04/17/1984 |
| 4436974 | Pipe resistance butt welding apparatus A pipe resistance butt welding apparatus comprises a body with an elongated arrying member and two internal expanding clamps including current-feeding shoes. One of the clamps is rigidly attached to the body, whereas the other is movably mounted on the elo... | 03/13/1984 |
| 4415793 | Welder for continuous resistance flash-butt welding The primary winding of a welding transformer is provided with controlled rectifiers and the primary winding of a current transformer. The secondary winding of the current transformer is connected to a welding current pick-up. The phase angle of opening of... | 11/15/1983 |
