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| Number | Title | Issue Date |
| 7319191 | Signal adapter A signal adapter comprising an explosion proof housing, a circuit member disposed on an inside of the explosion proof housing, a signal input connector electrically connected to the circuit member, a signal output connector electrically connected to the circuit memb... | 01/15/2008 |
| 7275677 | Synchronized tubular friction welding arrangement Method and apparatus for friction welding termination elements at first and second ends (21, 23) of a cylindrical shaft (15) in alaignment with an axis. A shaft receiver (17) receives the cylindrical shaft (15), and a first chuck (70 | 10/02/2007 |
| 7045741 | Electric arc welding device, method of welding metal sheets to metallic counterpieces, and welding element An electric arc welding device (10) for butt welding metallic sheets (12; 72; 80; 90; 92; 94; 100) is provided having an elongated face (22) onto metallic counterpieces (14), having a holding device (16; 16, 74) for holding a sheet... | 05/16/2006 |
| 6831247 | Resistance butt flash welding A resistance butt flash welding machine comprises two work piece clamping platens, at least one of which is movable with respect to the other, an electric servo motor operatively mechanically connected to the movable platen, and a programmable electrical control con... | 12/14/2004 |
| 6429398 | Flash welding installation The invention relates to an installation for welding metal bands comprising two retaining members (2, 2') for the ends of both bands, mounted respectively on a fixed frame (1) and a mobile frame (1'), means for shearing both facing parallel edges (m1, m2)... | 08/06/2002 |
| 6262385 | Flash butt welding device A flash-butt welder having a stationary head 41 and a moving head 42, a pair of electrodes 45a, 45b, and 46a, 46b coupled to each of the stationary and moving heads, respectively, power source transformers 12 through 16 are located at the stationary head ... | 07/17/2001 |
| 6163003 | Method and apparatus for controlling forging force during flash butt welding of railway rails A method and apparatus are provided for flash butt weld joining adjacent rail ends on site during initial field installation where at least one of the rails is fastened to the roadbed, and inclosure butt welding rails as in de-stressing long sections of r... | 12/19/2000 |
| 6107594 | Flash butt welding device A flash-butt welder having a stationary head 41 and a moving head 42, a pair of electrodes 45a, 45b, and 46a, 46b arranged to each of the stationary and moving heads, respectively, wherein power source transformers 12 through 16 are located at the station... | 08/22/2000 |
| 6025569 | Magazine and a stud advancing system for use with a manual stud welding tool A system for automatically feeding studs to the electrode of a manual stud welding tool. The system comprises a magazine associated with the tool. The magazine receives a tandem row of studs mounted in and collated by a disposable mounting and collating s... | 02/15/2000 |
| 5979738 | Machine for flash-butt welding of rails A machine for flash-butt welding of rails, incorporates two tong-type clamping devices made in the form of two two-arm levers carried by a common central axle with insulation from each other and capable of being displaced along the axle relative to each o... | 11/09/1999 |
| 5719368 | Apparatus for joining billets in continuous rolling mill An apparatus for joining billets in continuous rolling mill comprises a pair of parallel rails 14, a travelling welding machine 4 having first support rolls 54,55, a travelling grinding machine 5 having second support rolls 56a, 56b,57, a first group of c... | 02/17/1998 |
| 5698118 | Flash welding apparatus A flash welding machine is capable of cutting ends of a pair of preceding and following weld members 1, 2 by means of a shear device 26, 27 and then flash welding them with each other. The flash welding machine can coat an appropriate amount of combustibl... | 12/16/1997 |
| 5389760 | Flash butt welding facility A flash butt welding facility exhibits a housing (1) and a slide (2) linearly displaceable in the former. Respectively one clamping system is installed in the housing (1) and in the slide (2), by means of which profiled workpieces, e.g. rails (5a, 5b), ca... | 02/14/1995 |
| 5367138 | Welding assurance control techniques Techniques for assuring the accuracy of the welding of a part including a part calibration cycle, a tap check cycle and a gap detection cycle. The part calibration cycle determines the electrical load presented by the part to the welder transformer. The t... | 11/22/1994 |
| 5099097 | Mobile electric flash-butt welding unit A mobile electric flash-butt welding unit for welding together adjacent ends of track rail sections comprises a pair of welding heads displaceable in a longitudinal direction towards each other, each welding head comprising two tong-like parts pivotal tow... | 03/24/1992 |
| 5080278 | Process and apparatus for sealing a metallic capsule and welding it to a metal cable A process and apparatus for leak-proof sealing of a metallic capsule closed by a stopper and joining the capsule to a metal cable by arc welding, wherein a capacitor is charged, the capsule with a striking tip at one end or the stopper with an ignition po... | 01/14/1992 |
| 4999476 | Machine for pressure welding workpieces heated with arc moving in magnetic field The machine incorporates two clamping means, a static one fitted to a bedframe and a movable one mounted on rods which are attached to upsetting hydraulic cylinders with their ends with provision for reciprocating back and forth. Each clamping means consi... | 03/12/1991 |
| 4988843 | Electrical flash butt welding apparatus Apparatus for electrical flash butt welding the ends of metal sheet or strip including a pair of flat faced parallel welding electrodes extending across the full width of the metal sheet or strip, one on each side thereof, and an electrode cleaning device... | 01/29/1991 |
| 4983801 | Rail tensioning apparatus An apparatus for tensioning or longitudinally sliding a rail of a laid track to reduce a gap between adjacent ends of longitudinally successive rail sections to be welded together to form the rail, the fastening elements of the longitudinally successive r... | 01/08/1991 |
| 4929816 | Electric flash-butt welding machine and method of providing a welded joint between adjacent ends of rail sections A mobile electric flash-butt welding machine comprises machine frame, undercarriages supporting the machine frame on a railroad track, and a drive for propelling the machine frame along the track. The machine frame carries a hydraulic fluid supply pump, a... | 05/29/1990 |
| 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 |
| 4733044 | Method for controlling a flash-butt resistance welding process The disclosed process includes the steps of and upsetting the flashing parts being welded. The flashing is conducted with concurrent measurement of useful electric power and an electric parameter of the flashing process which is related to the power by a ... | 03/22/1988 |
| 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 |
| 4656328 | Welding fixture A welding fixture by which two elongate members are manipulated in a manner to become butt welded together. Two gripping members in the form of groups of spaced slip assemblies are enclosed in mounted relationship within a housing. The slips of each group... | 04/07/1987 |
| 4645896 | Method and apparatus for flash welding A method and apparatus for flash welding are disclosed wherein a first predetermined voltage is applied between a pair of workpieces to be welded to generate flashes therebetween, and a second predetermined voltage lower than the first predetermined volta... | 02/24/1987 |
| 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 |
| 4620079 | Stud welding device A stud welding gun has a forepart which includes the delivery end of an automatic stud-feeder and is secured to the housing by a quick releasable joint so as to be readily replaceable by another forepart supplying a stud of different size. The gun include... | 10/28/1986 |
| 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 |
| 4490599 | Apparatus for flash welding of pipes An internal apparatus for flash welding pipes together in end to end relationship both under factory conditions and in the field, for example in laying trunk pipelines, comprises an elongate supporting member carrying an axially movable clamping assembly ... | 12/25/1984 |
| 4489229 | Flash butt welder for joining flat strip ends In a flash butt welder for joining strip ends, the improvement for improving the quality of flash butt welds made in specialty grade steels, such as high strength low alloy, as well as for considerably reducing the upset current requirement, by applying a... | 12/18/1984 |
| 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 |
| 4383162 | Electrical control circuits for flash welders An electrical control circuit which provides means of initiating the start of upset of a flash welding machine at an operator selectable value of flashing electrical energy. The energy signal for this circuit is taken from an energy monitor, such as the o... | 05/10/1983 |
| 4376242 | Flash welding apparatus and method Improved apparatus and method for performing flash welding is disclosed. The apparatus moves adjacent surfaces of workpieces toward each other and applies electrical energy between them for flash heating the surfaces in a flashing step, after which it for... | 03/08/1983 |
| 4354089 | Welding apparatus with forward shiftable electrode tables A welding apparatus comprises a pair of clamping devices for clamping the workpieces to prevent slip under applying significantly large force to the butting surfaces for the butt welding operation and a pair of electrode tables for feeding a welding curre... | 10/12/1982 |
| 4324515 | Die shear apparatus for trimming wire weld bulges A bulge (12) formed by coldwelding two wire sections (10-11) is removed by advancing the wire through a bore (91) formed in a split cutting tool (64) having a pair of stepped-back tapered surfaces (92,96) at one end. The tapered surfaces terminate along a... | 04/13/1982 |
| 4323752 | Pipe resistance butt welding apparatus A pipe resistance butt welding apparatus disposable within the pipes to be welded comprises a fixed expanding clamp and a movable expanding clamp, provided with clamping elements and actuating cylinders and intended to fix the pipes to be welded with resp... | 04/06/1982 |
