Patents
Sitemap › B23 - Machine tools; Metal-working not otherwise provided for › B23K - Soldering or unsoldering; Welding; Cladding or plating by soldering or welding; Cutting by applying heat locally, e.g. flame cutting; Working by laser beam › B23K 9 - Arc welding or cutting
Patents for B23K 9 - Arc welding or cutting (32,679)
11/1991
11/12/1991US5064112 Friction welding
11/12/1991CA1291887C Device for protecting optical means from contaminated gases
11/07/1991DE4014302A1 Variable DC supply for two pole appts. - has parallel sources with short circuit switches and series decoupling diodes allowing adjustment in stages
11/07/1991DE4014275A1 Welding current control
11/06/1991EP0455328A1 Subterranean well welding habitat
11/05/1991US5063282 Apparatus and method for optimizing a welding operation
11/05/1991US5063281 Weaving welding method
10/1991
10/31/1991WO1991016170A1 Standoff control method and apparatus for plasma cutting machine
10/31/1991WO1991016169A1 Method of controlling torch height in plasma cutting
10/31/1991WO1991016168A1 Mag arc-welding method and welding apparatus
10/31/1991WO1991016152A1 Autotracking fume extraction exhaust hood
10/31/1991WO1991012922A3 Alternative current source for welding
10/30/1991EP0454073A1 Method of strengthening aluminium castings in the specified local part
10/30/1991EP0454072A2 Method and apparatus for surface modification of metal parts
10/30/1991EP0409990A4 Method for press-welding of parts with heating by electric arc moving in a magnetic field
10/30/1991CN2087548U Electricity-saving device for integrated circuit
10/30/1991CN1055686A Mechanically scanning welding seam tracing photoelectric sensor
10/30/1991CN1055685A Method and circuit arrangement controlled welding current according to welding speed
10/29/1991US5061841 Apparatus and methods for controlling a welding process
10/29/1991US5061433 Process for the replacement of a heating rod of a pressurizer of a pressurized-water nuclear reactor
10/29/1991US5060882 Wire supply reel support device
10/23/1991EP0452778A2 Pressure vacuum vessel and method of manufacture
10/23/1991CN2087116U Automatic control decice for charge and discharge of single-point welding
10/22/1991US5059766 Method and apparatus for improved arc striking
10/22/1991US5059765 Method of operation for high speed automatic welding
10/22/1991CA1290960C Method and apparatus for forming welded rings
10/19/1991WO1991016167A1 Automatic rail welding method
10/17/1991WO1991015328A1 An arc welding device
10/17/1991DE4011647A1 Welding current control
10/17/1991CA2014734A1 Autotracking fume extraction exhaust hood
10/16/1991EP0452213A1 Welds protection device by gaseous diffusion and method for carrying out
10/16/1991EP0452087A2 Mineral insulated cable manufacture
10/16/1991EP0451734A1 Wire supply reel support device
10/16/1991EP0451464A2 Method and circuit for controlling the welding current, the welding power in response to the welding speed
10/16/1991EP0451279A1 Arc welding current/voltage control method
10/15/1991US5057665 Electronic arc welding station with input voltage compensation
10/15/1991US5056703 Method of splicing webs
10/15/1991CA1290819C Distributed station welding system
10/15/1991CA1290807C Battery assembly process and apparatus
10/15/1991CA1290565C High strength high toughness welding for steam turbine rotor repair
10/13/1991CA2039950A1 Weldment protection device by gas diffusion; process of implementation of said device
10/09/1991EP0451072A1 Remotely releasable arc welding torch with shielding gas
10/09/1991EP0451071A1 Remotely releasable arc welding torch with shielding gas
10/09/1991EP0450617A1 Method of forming weld bead of pure copper on ferroalloy base material
10/09/1991CN2086179U Alternating current arc-welding machine
10/08/1991US5055654 Mast assembly for rotary tool
10/03/1991WO1991015092A1 Heat controller and method for heat treatment of metal
10/03/1991WO1991015091A1 Heat controller and method for heat treatment of metal
10/03/1991WO1991014530A1 Drive device for push-pull welding torches
10/02/1991EP0449467A1 Apparatus employing a welding power supply for powering a plasma cutting torch
10/02/1991CN2085700U Dc welder with thyristor
10/02/1991CN2085699U Un-load electricity-saving and electric shock-preventing apparatus for ac arc welder
10/02/1991CN2085698U Dc arc welder
10/02/1991CN1054923A Feeding device for tubular electrode wire
10/02/1991CN1014126B Plasma cutting-torch
10/01/1991US5052609 Device for the centering and clamping of pipe workpieces
10/01/1991CA1289785C Weld stud
09/1991
09/27/1991CA2038794A1 Plasma cutting torch power supply
09/26/1991DE4009391A1 Antriebseinrichtung fuer push-pull-schweissbrenner Drive means for push-pull welding torch
09/25/1991EP0447630A1 Coated welding cups
09/25/1991EP0447583A1 Apparatus for feeding electrode wire
09/25/1991CN2085278U Wire-drawing type wire feeder for automatic welder
09/25/1991CN2085277U Steel bar arc press welder
09/24/1991US5050786 Waist-attached cable holder
09/24/1991US5050385 Inner cylinder for a gas turbine combustor reinforced by built up welding
09/19/1991DE4007673A1 Aluminium welding process - uses direct current, tungsten electrode and a shielding gas contg. helium and argon
09/18/1991CN2084857U A.c. arc welder for sheet metal
09/18/1991CN2084856U Energy saver for electric welder
09/17/1991US5049723 System for detecting penetration of a blank
09/17/1991US5049717 Arc stud welding machine
09/17/1991US5049716 Steam turbine having applied novel erosion resistant surfaces and methods for applying these surfaces
09/15/1991WO1991013720A1 A method of producing a protective gas and a gas mixture therefor
09/12/1991DE4007147A1 Welding pistol - has a suction opening connected to two separators for a long life and easy cleaning
09/11/1991EP0445818A1 Method of modifying surface qualities of metallic articles and apparatus therefor
09/11/1991EP0445353A1 Electric arc spraying of reactive metals
09/11/1991CN2084403U Plasma cutting torch with circular flow cooling electrode
09/11/1991CN2084402U Electric dc arc welding power sources
09/10/1991US5047451 Finely divided metals, organic solvent dissolving a primary bonding resin curable to a dry resin
09/05/1991DE4006169A1 Resistance welding tubing from strip - using pre-heated additive wire to improve heat effect inside weld zone to ensure expansion of all oxide particles
09/04/1991EP0444453A2 Noise reduction method for WIG-AC-welding machine
09/04/1991CN2083977U Insulation grid type dual polarity transistor arc welding converter
09/04/1991CN2083976U Powdered plasma build-up welding gun
09/04/1991CN1054208A High-frequency and-power arc welder power supply with pulse transverter using non-crystal soft-magnetic core
09/04/1991CN1013749B Apparatus for detecting a shape of a grove
09/04/1991CN1013742B Method of and apparatus for producing tubes with small diameter and thick wall
09/03/1991US5045670 Method and apparatus for extending the brush life of a cooling fan in an electronic welder
09/03/1991US5045665 Fluid cooled torch
08/1991
08/29/1991DE4006138A1 Wire nozzle for protective gas welding - has an encircling spring which via ceramic stopper presses welding wire against nozzle borehole wall
08/28/1991EP0443703A2 Consumable electrode arc welding method and apparatus
08/28/1991CN2083529U No-load safety power saving switch of electric arc welder
08/27/1991US5043557 Load voltage detecting device for use in an apparatus for supplying a current variable with time to a load section
08/27/1991US5042125 Apparatus for manufacturing stamp formed mufflers
08/22/1991DE4004667A1 Wechselstromquelle zum schweissen Welding AC power source
08/21/1991EP0442625A2 Stud welding system
08/21/1991EP0442481A2 Industrial robot control method and apparatus
08/21/1991EP0442475A2 Gas metal arc welding and shielding gas therefor
08/21/1991CN2083096U Power-saving safety protector of electric welder
08/20/1991US5041710 Conversion convergent nozzle assembly
08/20/1991US5041174 Austenitic-ferritic alloy; railroad tracks
08/20/1991US5040915 Breakaway mount
1 ... 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 ... 327