| Patents for B23K 9 - Arc welding or cutting (32,679) |
|---|
| 05/28/1991 | US5018321 Subterranean well welding habitat |
| 05/28/1991 | CA1284522C Plasma arc torch having supplemental electrode cooling mechanisms |
| 05/28/1991 | CA1284521C Hood for arc torch, and cutting torch thus equipped |
| 05/23/1991 | DE4006167C1 Steel pipes mfr. - by forming strip into slit tube and welding tube with sides of slit pressed together |
| 05/22/1991 | EP0427718A1 Press for holding a magnetic yoke during welding. |
| 05/22/1991 | CN2077346U Electric welder for thin plate |
| 05/22/1991 | CN2077345U Both welding and cutting machine |
| 05/21/1991 | US5017757 Pulsed arc welding machine |
| 05/21/1991 | US5017756 Method and apparatus for preventing chain reaction transistor failure in paralleled transistors |
| 05/21/1991 | US5016810 Method for improving weldability of nickel aluminide alloys |
| 05/21/1991 | US5016807 Method for producing workpieces of metal |
| 05/15/1991 | CN2076897U Single phase direct current opposite angle welding machine for steel window |
| 05/15/1991 | CN1051322A Plasma arc cutting torch having extended lower nozzle member |
| 05/14/1991 | US5015822 Nozzle structure in welding gun |
| 05/14/1991 | US5015821 Computer controlled welding robot |
| 05/14/1991 | US5015815 Process and device for regulation of resistance or arc welding processes |
| 05/14/1991 | US5014901 Rotatable welding fixture and method for metal cladding tubular membrane panels |
| 05/08/1991 | EP0426289A2 Plasma ARC cutting torch having extended lower nozzle member |
| 05/08/1991 | EP0426267A2 Apparatus and method for making overlapping strip joints |
| 05/08/1991 | CN1051134A Strengthened anticorrosion and anti-vapor-etching method by surface alloying |
| 05/07/1991 | US5013887 Torch alignment verification method and apparatus |
| 05/07/1991 | US5013880 Process for welding a follower pipe to a buried pipe string |
| 05/07/1991 | CA1283954C Apparatus to be used when welding pipes together |
| 05/02/1991 | WO1991005630A1 Joint in fume-extracting welding gun |
| 05/01/1991 | CN2076003U Vertical steel bar electroslag welding machine |
| 05/01/1991 | CN1012479B Method of automatic electric arc welding |
| 04/30/1991 | CA2012977A1 Apparatus and method for making overlapping strip joints |
| 04/24/1991 | EP0423629A2 Method of controlling an arc welding head |
| 04/23/1991 | US5010228 Tool changer for welding robot |
| 04/23/1991 | US5010225 Tungsten carbide grains in steel matrix |
| 04/18/1991 | WO1991004826A1 Method and apparatus for making an underwater weld seam between endwise positioned tubular elements, like pipes |
| 04/17/1991 | EP0423088A1 Method for automatic multi-layer welding |
| 04/17/1991 | EP0422993A1 Method and apparatus for electric arc welding a circular joint or the like with a horizontal axis |
| 04/17/1991 | EP0422763A1 A method of welding aluminium based workpieces |
| 04/17/1991 | EP0422249A1 Optical distance sensor |
| 04/16/1991 | US5007664 Joint in fume-extracting welding gun |
| 04/16/1991 | US5007597 Automatic dispenser for elongated flexible coiled elements |
| 04/16/1991 | CA1283005C Coupling aid for laser fusion of metal powders |
| 04/11/1991 | CA2027186A1 Electric are welding process and apparatus for closing a horizontal peripheral joint or the like |
| 04/10/1991 | EP0391984A4 Apparatus and process for cooling a plasma arc electrode |
| 04/09/1991 | US5006688 Laser-arc apparatus and method for controlling plasma cloud |
| 04/09/1991 | US5006686 Control of stud-welding apparatus |
| 04/09/1991 | CA1282841C Mig welder attachment for an electric hand drill |
| 04/04/1991 | WO1991004125A1 Method of locating a welding starting-point |
| 04/04/1991 | DE3932210A1 Igniting welding arc using non-consumable electrode - in which voltage on electrodes is monitored to recognise the pressure of short circuits and arc current is correspondingly reduced |
| 04/03/1991 | EP0419670A1 Method and apparatus for multi-layer buildup welding |
| 04/03/1991 | CN2074222U Three-phase silicon rectifying dc arc welder |
| 04/02/1991 | US5004886 Method of applying wear-resistant layer and consumable electrode for carrying out the method |
| 04/02/1991 | US5004885 Apparatus for overhead submerged-arc welding |
| 04/02/1991 | US5004884 Forming grooves, using flux |
| 04/02/1991 | CA1282268C Apparatus and method for automatically welding a t-junction connector to a mainpipe |
| 03/28/1991 | DE4014368A1 Integrated vehicle wheel unit mfr. - involves use of cast disc welded to rolled rim |
| 03/27/1991 | EP0418392A1 Method and consumable electrode for electric arc welding of metal parts |
| 03/27/1991 | CN2073785U No-load automatic switching-off device of electric welding machine |
| 03/27/1991 | CN1012216B Diapharm pressure sensor for flowing medium with high-temp. and high-pressure |
| 03/27/1991 | CN1012145B Welding rods and technolgy for repair welding of white-iron roller |
| 03/26/1991 | US5003154 Apparatus and method of short circuiting arc welding |
| 03/26/1991 | US5003150 Apparatus for inert gas shielded arc welding |
| 03/26/1991 | US5003149 Apparatus for overhead submerged-arc welding |
| 03/26/1991 | US5003146 Universal fitting for metal disintegration electrodes |
| 03/26/1991 | US5002049 Portable smoke and gas dispeller |
| 03/26/1991 | CA1282121C Method and apparatus for cutting welding steel strips |
| 03/26/1991 | CA1281949C Method for forming composite layer by laser irradiation upon aluminum alloy substrate surface of powder mixture containing metal carbideceramic particles, silicon, and metal element forming inter metallic compound with silicon |
| 03/21/1991 | WO1991003351A1 Arc welding current/voltage control method |
| 03/21/1991 | DE4029117A1 Digitally regulating electric welding device - using data storage device to adjust inverter in response to voltage and current instantaneous values |
| 03/21/1991 | DE3930208A1 Rapid sensor system for welding process - esp. for visualising droplet transfer in pulsed arcs |
| 03/20/1991 | EP0417731A2 Tool joint & method of hardsurfacing same |
| 03/20/1991 | EP0417468A1 Welding apparatus coated with spatter-resistant and electrically conductive film |
| 03/20/1991 | EP0211836B1 Adaptive welding guidance apparatus |
| 03/20/1991 | CN1049993A Dc supply for arc welding machine |
| 03/20/1991 | CN1012044B Single-power plasma welding method with molten electrode protected by gas |
| 03/19/1991 | US5001326 Apparatus and method of controlling a welding cycle |
| 03/19/1991 | US5001322 Manual percussive welding apparatus |
| 03/19/1991 | US5001320 Welding fixtures by which pipe ends are joined together |
| 03/19/1991 | CA1281782C Slag removing apparatus for pad-welding machine |
| 03/19/1991 | CA1281781C Inert gas arc welding machine with rotating electrode, and its use |
| 03/14/1991 | DE3930320A1 Bolt-welding gun with elongated bolt holder - adaptable to bolts of various length via washers inserted in recess in top of holder between holder and piston head feed |
| 03/14/1991 | DE3929669A1 Bolt arc welding gun - with single fixed electromagnetic positioning device which is monitored and corrected by path measuring unit fixed to it |
| 03/14/1991 | DE3929668A1 Bolt arc-welding gun - has pneumatic cylinder to position bolt in contact with workpiece before electromagnetic device causes bolt to move away to produce arc |
| 03/14/1991 | DE3928398A1 Butt welding rail section for improved fatigue strength - using copper support brackets at base and side to enable prodn. of fatigue resistant weld |
| 03/13/1991 | WO1991004122A1 Quick disconnect connector for plasma arc torch |
| 03/13/1991 | CN2072880U V-mos reverse variation arc welder |
| 03/13/1991 | CN2072879U Automatic idling circuit breaker of fully saving electricity welder |
| 03/13/1991 | CN1011951B Combined parallel power supply for arc welding |
| 03/12/1991 | US4999563 Separately power-feeding welding generator |
| 03/12/1991 | US4999478 Metal cored electrode |
| 03/12/1991 | US4999476 Machine for pressure welding workpieces heated with arc moving in magnetic field |
| 03/12/1991 | US4999474 Gas mixture and welding method |
| 03/06/1991 | CN1049701A Method of applying erosion resistant surfaces to steam turbine components |
| 03/06/1991 | CN1011870B Heat insulation electrode holder |
| 03/05/1991 | US4998005 Machine vision system |
| 03/05/1991 | CA1281083C Pulsed arc welding |
| 02/27/1991 | EP0414595A1 Method for welding by arc deflection |
| 02/27/1991 | CN2071997U Combined butt and arc welder |
| 02/26/1991 | US4996409 Arc-welding monitor |
| 02/26/1991 | US4996407 Plasma arc transfer controller |
| 02/26/1991 | CA1280807C Adaptive welding control vision head |
| 02/26/1991 | CA1280560C Ribbed article and a method of producing it |
| 02/22/1991 | CA2022244A1 Sweep welding method and apparatus therefor |
| 02/21/1991 | WO1991001843A1 Stud welding machine with a plurality of welding outputs for welding guns of different polarity for various welding operations |