| Patents for B23K 9 - Arc welding or cutting (32,679) |
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| 06/30/1981 | US4276503 Method and apparatus for servo-controlling a rotating workpiece |
| 06/30/1981 | US4275542 Welded structure of a power arm |
| 06/25/1981 | WO1981001676A1 Method and apparatus in arc welding |
| 06/23/1981 | US4275284 Gas-shielded arc welding torch |
| 06/23/1981 | CA1103762A1 Method of connecting metallic parts by means of arc fusion welding |
| 06/16/1981 | US4273988 Pulse welding process |
| 06/16/1981 | US4273987 Method of controlling synchronized movement of backing shoe in automatic one-side welding |
| 06/16/1981 | US4273986 Method and apparatus for arc butt welding |
| 06/16/1981 | US4273982 Underwater cutting and gouging method |
| 06/16/1981 | US4273159 Earth boring apparatus with multiple welds |
| 06/09/1981 | US4272004 Z-Bar guide apparatus |
| 06/03/1981 | EP0029524A1 Device for arc welding with a prearranged current characteristic |
| 06/02/1981 | US4271346 Welding apparatus capable of welding axially offset portions |
| 06/02/1981 | US4270824 Electrical clamp |
| 05/28/1981 | WO1981001384A1 Apparatus and method for double end stud welding |
| 05/28/1981 | WO1981001383A1 Improved power source for metal transfer processes |
| 05/28/1981 | WO1981001382A1 Arc welding method and apparatus therefor |
| 05/26/1981 | US4270037 Arc welding machine using non-consumable electrode |
| 05/26/1981 | US4270036 Device for welding together two bars on their front sides |
| 05/26/1981 | CA1101939A1 Method and apparatus for submerged-arc angled strip cladding |
| 05/26/1981 | CA1101701A1 Rebuilding welding apparatus |
| 05/19/1981 | US4268740 Flex head welding torch having disc spring biasing elements |
| 05/19/1981 | CA1101499A1 Welding power supply |
| 05/14/1981 | WO1981001261A1 Solid state control for motor-generator welder |
| 05/13/1981 | EP0028393A2 Motor vehicle wheel |
| 05/12/1981 | US4267426 Automatic stud welding gun with perforated stud collet |
| 05/12/1981 | US4267425 Stud welding apparatus |
| 05/12/1981 | US4267421 Apparatus for the successive welding of C-shaped, pre-bent, interlinked chain links |
| 05/12/1981 | US4266690 Welding electrode dispenser |
| 05/05/1981 | US4266114 Apparatus for the remote control of mains operated DC and AC welding machines |
| 05/05/1981 | US4266110 Clad welding on an inclined surface |
| 04/30/1981 | WO1981001116A1 Z-bar guide apparatus |
| 04/28/1981 | US4264801 Method of welding tube to header of heat exchanger |
| 04/22/1981 | EP0027145A1 Clad steel plate |
| 04/21/1981 | US4263497 Welding guide |
| 04/21/1981 | CA1099539A1 Method of welding for exfoliation prevention of stainless steel weld-overlay |
| 04/15/1981 | EP0026891A1 Device for advancing a welding wire |
| 04/14/1981 | US4262187 System for plugging tubes by welding |
| 04/14/1981 | US4261500 Modular apparatus for the feeding of electrode wire through great distances |
| 04/14/1981 | US4261499 Planetary wire-feeding device |
| 04/14/1981 | US4261191 Method and apparatus for winding metal wires around a reel structure |
| 04/08/1981 | EP0026434A1 Method of welding tube to tube plate |
| 04/08/1981 | EP0026237A1 Amorphous metal containing iron family element and zirconium, and articles obtained therefrom |
| 04/07/1981 | US4260870 Automatic welding apparatus for upward welding of curved joint |
| 04/07/1981 | US4260867 Electrode drive and nozzle system for automatic air-carbon arc cutting and gouging torch |
| 04/07/1981 | CA1098969A1 Method of joining two sheet metal parts |
| 04/01/1981 | EP0026072A1 A generator of high current pulses |
| 04/01/1981 | EP0025990A1 Non-consumable composite welding electrode |
| 04/01/1981 | EP0025989A1 Gas tungsten arc welding torch and welding process |
| 03/24/1981 | US4258247 Method of producing welded joint including non-welded portion |
| 03/24/1981 | US4258244 Method for reducing operating noise of the air-carbon arc cutting and gouging process |
| 03/24/1981 | US4258242 Welding process for production of a steel pipe |
| 03/24/1981 | CA1097954A1 Method and device for welding protected metallic workpieces, and use of said method and device |
| 03/19/1981 | WO1981000799A1 A generator of high current pulses |
| 03/18/1981 | EP0025146A1 Welding powder for submerged arc welding of light metals, such as aluminium and its alloys |
| 03/17/1981 | US4256518 Welding and austenitizing earth boring apparatus |
| 03/17/1981 | CA1097748A2 Welding method for longitudinally seam welding a pipe blank from the inside using the metal arc welding process |
| 03/11/1981 | EP0024438A1 Arc welding process |
| 03/11/1981 | EP0024435A1 Mig arc welding method |
| 03/10/1981 | US4255643 Programmed welding machine with continuously monitored override control |
| 03/10/1981 | CA1097006A1 Two-layer surfacing process by fusion welding |
| 03/03/1981 | US4254466 Power factor monitoring and control system for resistance welding |
| 03/03/1981 | US4254322 Narrow weld-groove welding process and apparatus therefor |
| 03/03/1981 | US4254321 Expandable purge unit |
| 03/03/1981 | CA1096645A1 Methods of pipeline construction in arctic and subarctic regions and apparatus for carrying out same |
| 02/25/1981 | EP0024142A1 Method for repairing a crack in a superalloy material and an article when so repaired |
| 02/24/1981 | US4253006 Apparatus and method for internally weld-cladding pipe elbows |
| 02/17/1981 | US4251710 Resistor type arc welding machine |
| 02/17/1981 | US4251167 Method of welding together submerged pipe ends by means of a telescopic connection sleeve |
| 02/10/1981 | US4250373 Transferred type plasma torch |
| 02/04/1981 | EP0023348A1 A.C. arc welder |
| 02/03/1981 | US4249063 Circuit for high frequency arc welding apparatus using a low frequency switch |
| 02/03/1981 | US4249062 Apparatus and method for sensing welding point in automatic welding apparatus |
| 02/03/1981 | US4249061 Method and apparatus for arc welding |
| 02/03/1981 | US4248372 Apparatus for automatically welding corrugated membranes |
| 02/03/1981 | US4248371 Welding machine |
| 01/27/1981 | US4247752 Constant current arc welder |
| 01/27/1981 | US4247751 Automatic presettable welding system |
| 01/27/1981 | US4247750 Vertically positioned submerged arc flux dam |
| 01/27/1981 | US4247037 Method for welding tubular members of stainless steel |
| 01/27/1981 | CA1094650A1 Device for the welding of railway rails, steel sections or the like |
| 01/27/1981 | CA1094649A1 Method for manufacturing spiral-seam-welded steel pipe by gas shielded arc welding |
| 01/27/1981 | CA1094342A1 Diaphragm assembly |
| 01/22/1981 | WO1981000072A1 Improved method of forming a socket weld |
| 01/21/1981 | EP0022736A1 Process for shielding-gas electric-arc welding of steel, and its use |
| 01/20/1981 | US4246465 Pulsed-arc D.C. TIG welding apparatus |
| 01/20/1981 | US4246464 Device for welding metallic hollow bodies with a magnetically moved electric arc |
| 01/20/1981 | US4246463 Method and apparatus for arc welding of metal plates from one side only |
| 01/20/1981 | US4245767 Apparatus for effecting multi-bead welding of two workpieces |
| 01/20/1981 | CA1094170A1 Apparatus for obtaining feedback signals for controlling a parameter of an arc welding machine |
| 01/13/1981 | CA1093649A1 Continuous tig welding of intermittent tabs of a tubular armature |
| 01/13/1981 | CA1093347A1 Welding backup employing a train of knuckle-joint tiles |
| 01/13/1981 | CA1093346A1 Method and apparatus for automatic welding of chamfered tubes |
| 01/07/1981 | EP0021856A1 Weld electrode tracking system |
| 01/07/1981 | EP0020362A1 Welding torch cooled by liquid-gas transition |
| 01/06/1981 | US4243868 Orbital arc-welding apparatus of split construction |
| 01/06/1981 | US4243862 Arc cutting device with mechanical material removal |
| 01/06/1981 | US4243727 Surface smoothed tool joint hardfacing |
| 01/06/1981 | US4242981 Apparatus for rebuilding cylindrical objects |
| 01/06/1981 | CA1093160A1 Apparatus for the planetary feeding of welding electrode wire |