|
Match
|
Document |
Document Title |
|
|
7385159 |
Output stage for an electric arc welder
An auxiliary OCV boost circuit for the power source of an electric arc welder to perform a welding process between an electrode and a workpiece, which power source has a main positive voltage...
|
|
|
7329833 |
System for improved high-frequency arc starting of a welding process
A welding gun is disclosed that includes an electrode configured to effectuate a welding-type process and a non-conductive nozzle configured to at least partially surround the electrode. The...
|
|
|
7321106 |
TIG welding torch
An improved TIG welding torch with a gas nozzle surrounding the fixed electrode and using a high frequency generator remote from the torch to selectively create a short burst of high frequency,...
|
|
|
7301122 |
Inline spark gap assembly
A spark gap point and spark gap assembly for a welding-type device are disclosed for igniting and stabilizing a welding-type arc. A double-headed spark gap point having spark gap surfaces on two...
|
|
|
7265318 |
System and method for variable hot start of a welding-type device
A system and method for a variable hot start of a welding-type device is disclosed. The variable hot start includes determining at least one of a plurality of parameters of a welding-type device...
|
|
|
7186944 |
Method and apparatus for autodetection of plasma torch consumables
A method and apparatus for automatically determining a consumable type when a consumable is disposed within an electrode holder of a welding-type system is disclosed. The invention includes a...
|
|
|
7183517 |
Portable welding-type apparatus with interchangeable energy storage device
The present invention is directed to a portable welding-type power source including a removable energy storage device configured to provide a first voltage output and a boost circuit connected to...
|
|
|
7109433 |
Method and apparatus for initiating welding arc using chemical spray
Methods and apparatus for initiating an arc (e.g., a welding arc) by placing liquid droplets containing ions in the gap between an electrode and a workpiece. This is done while a potential...
|
|
|
6998574 |
Welding torch with plasma assist
An electric arc welding torch having a central conductive contact tube for electrical contact between a power source and a welding wire moving through the contact tube toward a workpiece, a...
|
|
|
6835910 |
Welding apparatus and method
A self-contained crucible assembly for forming a weld between a pair of metal articles, includes a container with side walls and a fusible bottom, a refractory material lining the side walls, an...
|
|
|
6784394 |
Ball formation method and ball forming device used in a wire bonding apparatus
A ball forming method and device used in a wire bonding apparatus in which a discharge is caused to occur by applying a high voltage between an electric torch and a tip end of a wire that extends...
|
|
|
6777638 |
Plasma arc torch and method of operation for reduced erosion of electrode and nozzle
There are provided a plasma arc torch and associated methods for selectively switching between a working mode and a standby mode. An electric arc is established between an electrode and a...
|
|
|
6703578 |
Exothermic reactions and methods
Exothermic reaction mixtures are electrically ignited with a low cost foil strip of two conductive strips separated by a layer of insulation. One or more holes are formed in the ignitor to create...
|
|
|
6573475 |
Welding power supply with output inductor
A method and apparatus that provides welding-type power is disclosed. It includes a power source, a welding output, an inductor winding and an auxiliary winding. The inductor winding is in...
|
|
|
6570131 |
Electric arc welder with arc starter
In a standard electric arc welder of the type having a main power supply with an off condition directing no current across an electrode and a workpiece and an on condition directing welding current...
|
|
|
6483077 |
Method and apparatus for initiating, directing and constricting electrical discharge arcs
A method and associated apparatus for initiating and guiding an electrical discharge arc. This method preferably comprises the steps of: providing a laser beam through a predetermined gas...
|
|
|
6459958 |
Operation data display device for robot
An operation data display device for a robot allowing an operator to recognize operation data on a plurality of operations performed by the robot at a time. When an arc start command is read out...
|
|
|
6423937 |
Arc ignition arrangement
The invention relates to an arrangement for contact arc ignition in manual TIG welding and to a method for welding with this arrangement. The arc is established by lifting the welding torch ( 12 )...
|
|
|
6388232 |
Starting and welding device for DC TIG welder and method of operating same
A DC TIG welder operable at a set low current level under about 5 amperes in a welding circuit including an electrode separated from a workpiece by a gap, the welder having an output welding...
|
|
|
6384374 |
Spark gap assembly for a welding power supply
A spark gap assembly for a welding power supply includes at least one pair of spark gap points and a housing base including at least one base groove for axially aligning the spark gap points. Point...
|
|
|
6316745 |
Arrangement with transfer of measured values
The invention relates to an arrangement for material transport and/or energy transport by means of electric arc. Measured values are transferred with suppression of disturbances from the HF device...
|
|
|
6249718 |
Method for tracking joints and edges for welding operations
A method for automatically tracking the joint between a first component and a second component, or the edge of a component, a welding operation. A preliminary path is defined for the joint or edge...
|
|
|
6156999 |
Method and device for welding arc ignition for arc welding apparatus
Method and device for welding arc ignition of an arc welding apparatus providing a reduced level of high frequency disturbances. A welding electrode and a workpiece are connected with a welding...
|
|
|
6137079 |
TIG welding torch permitting improving striking the welding arc
The invention relates to an electric arc welding torch comprising a torch body having an electrode holder (3) and a nozzle (4), said nozzle (4) being formed with at least one nozzle partition (2)...
|
|
|
6107602 |
Switchable power supply with electronically controlled output curve and adaptive hot start
A welding power supply that includes a series resonant converter, including at least one switch and at least one capacitor is disclosed. The converter includes a switching circuit including an...
|
|
|
6087628 |
Method and apparatus for controlling a welding power supply
A welding machine that includes a power supply having at least one control input is described. The power supply is capable of providing an electrode positive and an electrode negative output. Also,...
|
|
|
6075224 |
Method of and apparatus for initiating a welding arc
A method and apparatus for initiating a welding arc includes a controller coupled to a power circuit for enabling the power circuit a predetermined time after an arc starter circuit has applied an...
|
|
|
6066831 |
ARC start ancillary apparatus
In an arc start ancillary apparatus, which is connected in parallel to a welding power source for supplying electric power necessary for arc discharge between an electrode and a base metal, for...
|
|
|
6034350 |
Method and apparatus for initiating a welding arc using a background circuit
An apparatus for initiating a welding arc during a lift arc start. The apparatus includes a power circuit to provide welding power to a power output, a background circuit to provide background...
|
|
|
5925267 |
Plasma torch having a bypass unit
There is disclosed a plasma torch for performing a working operation with respect to a workpiece (8) by flushing out of a torch nozzle (2), a plasma arc drawn from an electrode (1) together with a...
|
|
|
5916464 |
Welding force feedback wire feed system
A MIG and Flux Core wire feed and containment system for filler wire distribution for both manual and robotic underwater and terrestrial welding applications has a sensor feedback pressure sensor...
|
|
|
5877952 |
Power supply apparatus with initial arcing sustaining circuit
Power supply apparatus includes a converter which converts a commercial AC voltage into a DC voltage. An inverter converts the DC voltage into a high frequency voltage. The high frequency voltage...
|
|
|
5861604 |
Arc welder and method providing use-enhancing features
A "hot start" method for arc welding includes selecting a first weld current, setting a time interval, striking an arc, flowing a second, higher weld current through the welding rod and then, after...
|
|
|
5852278 |
Arc welding and arc plasma cutting machines having improved DC high-voltage generator
An arc welding and arc plasma cutting machine having a dc high-voltage generator is provided. The dc high-voltage generator includes a first dc power source, a second dc power source, an one-way...
|
|
|
5828175 |
Circuitry for operating a glow discharge path
The circuitry for operating a glow discharge path (GES) comprises a bridge circuit (BC) comprising a polarity switch (S1) and an ignition pulse circuit (ZIS1) in a first bridge branch (B1) and a...
|
|
|
5773792 |
ARC welding machine and plasma cutting machine
In an arc welding machine and a plasma cutting machine, by connecting the output of a second DC power supply unit to a circuit fed by a first power supply unit, a DC high voltage from the second DC...
|
|
|
5760372 |
Arc welder
An arc welder includes an inverter for converting a DC voltage to a RF voltage which, then, is rectified by a rectifier. The output of the rectifier is smoothed by a DC reactor. A RF generator...
|
|
|
5753888 |
Stabilization and firing circuit for a power source of a cutting or welding system and method of stabilizing and firing same
The cutting or welding system includes a power source having, in one embodiment, a stabilization circuit for reducing arc rectification and, in another embodiment, a number of firing circuits for...
|
|
|
5714731 |
Welding power supply arc starter
A method and apparatus for arc welding, particularly starting an arc is disclosed. A welding power source that provides a welding current to an electrode and a workpiece includes a source of...
|
|
|
5705790 |
Method of igniting a welding arc
A method is indicated for igniting a welding arc between a fixed electrode and a metal workpiece to be welded, whereby a covering protective gas is supplied by a nozzle that extends into the...
|
|
|
5645741 |
ARC processing apparatus comprising driving means for controlling output transistor so that output voltage becomes predetermined no-load voltage
In an arc processing apparatus for supplying an electric power for an arc process through output terminals to a load containing an electrode and a workpiece to be processed, a main power source...
|
|
|
5643475 |
Power supply apparatus
A power supply apparatus for a plasma arc cutter includes an inverter which converts DC power to high-frequency power. An output developing circuit rectifies and smooths the high-frequency power...
|
|
|
5630955 |
Method of inducing arc generation in arc welding
A method of inducing arc generation in arc welding between a head of a wire and a workpiece, such that a robot supports a welding torch, thereby causing the head of the wire to be brought near a...
|
|
|
5615095 |
Method and apparatus for protecting an inverter power supply
In accordance with the present invention a power supply for providing an ac/dc output to a load is disclosed. The power supply includes a first source of dc power and an inverter that provides an...
|
|
|
5601740 |
Method and apparatus for wirebonding, for severing bond wires, and for forming balls on the ends of bond wires
The efficacy of electrical discharges for severing bond wires and/or for forming balls at the ends of bond wires (including bond wires already severed by alternative mechanisms) is improved by...
|
|
|
5530220 |
Plasma torch arc transfer circuit
An electronic circuit for a plasma arc torch that initiates the transfer of a pilot arc into an operating arc before operating current is sensed in a workpiece. The electronic circuit includes a...
|
|
|
5486679 |
Arc welding control method for a welding robot
An arc welding control method for a welding robot wherein a welding current and a welding voltage are controlled at the start of arc welding so as to prevent the formation of a molten metal pool....
|
|
|
5464958 |
Arc welding apparatus with variable polarity reversing device and control
A variable polarity device reverses the polarity of an electrically conductive workpiece and an electrode, having opposite polarities, between positive and negative in a low D.C. range of about...
|
|
|
5414238 |
Resonant power supply for an arcjet thruster
A power supply for a thruster for space applications (e.g., an arcjet thruster) comprises a series/parallel resonant converter wherein the load quality (Q) factor of the resonant tank circuit...
|
|
|
5365035 |
Method and apparatus for TIG welding
A method of TIG welding with alternating current with a welding apparatus (10) which is arranged in such a manner that the polarity of the welding current is controlled by an electronic control...
|