Patents in subclass Electric Heating/Arc Ignition
Parent class: Electric Heating
| Number | Patent title | Issue Date |
|---|---|---|
| 07399944 | Method and arrangement for controlling a glow discharge plasma under atmospheric conditions The present invention is directed to a method and arrangement for controlling a glow discharge plasma in a gas or gas mixture under atmospheric conditions, in a plasma discharge space comprising at least two spaced electrodes in which at... |
07/15/2008 |
| 07342198 | Method and apparatus for generating an electrical arc A method of generating an electrical arc includes steps of providing a first electrode and a second electrode, determining a dielectric strength of a gap region between the electrodes, determining a desired dielectric strength change... |
03/11/2008 |
| 07317171 | Method and apparatus for generating an electric arc A method and apparatus for reducing the gap resistance between two electrodes, such as the electrodes used fusion splicing one optical fiber to another, by injecting negative ions into the gas or gasses that are located between the... |
01/08/2008 |
| 07232975 | Plasma generators, reactor systems and related methods A plasma generator, reactor and associated systems and methods are provided in accordance with the present invention. A plasma reactor may include multiple sections or modules which are removably coupled together to form a chamber.... |
06/19/2007 |
| 07227097 | Plasma generation and processing with multiple radiation sources Plasma-assisted methods and apparatus that use multiple radiation sources are provided. In one embodiment, a plasma is ignited by subjecting a gas in a processing cavity to electromagnetic radiation having a frequency less than about 333... |
06/05/2007 |
| 07199328 | Apparatus and method for plasma processing A plasma processing system including a process chamber, a substrate holder provided within the process chamber, and a gas injection system configured to supply a first gas and a second gas to the process chamber. The system includes a... |
04/03/2007 |
| 07199384 | Inductively-driven light source for lithography An apparatus for producing light includes a chamber that has a plasma discharge region and that contains an ionizable medium. The apparatus also includes a magnetic core that surrounds a portion of the plasma discharge region. The... |
04/03/2007 |
| 07186943 | MERIE plasma reactor with overhead RF electrode tuned to the plasma with arcing suppression A plasma reactor for processing a semiconductor workpiece, includes a reactor chamber having a chamber wall and containing a workpiece support for holding the semiconductor support, the electrode comprising a portion of the chamber wall,... |
03/06/2007 |
| 07186944 | 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 detector assembly that measures a physical... |
03/06/2007 |
| 07161112 | Toroidal low-field reactive gas source An apparatus for dissociating gases includes a plasma chamber that may be formed from a metallic material and a transformer having a magnetic core surrounding a portion of the plasma chamber and having a primary winding. The apparatus... |
01/09/2007 |
| 07141756 | Microwave plasma processing apparatus, plasma ignition method, plasma forming method, and plasma processing method A microwave plasma processing apparatus is disclosed that enables fast and easy plasma ignition at the pressure for plasma processing In the microwave plasma processing apparatus, a plasma ignition facilitating unit is provided to... |
11/28/2006 |
| 07141806 | EUV light source collector erosion mitigation An EUV light source collector erosion mitigation method and apparatus for a collector comprising a multilayered mirror collector comprising a collector outer surface composed of a capping material subject to removal due to a removing... |
11/28/2006 |
| 07132620 | Inductive thermal plasma torch The invention relates to an inductive thermal plasma torch comprising a confinement tube that comprises, longitudinally in relation to the tube, metal fingers which are insulated from each other, an ignition device that comprises an... |
11/07/2006 |
| 07132621 | Plasma catalyst Methods and apparatus are provided for igniting, modulating, and sustaining a plasma for various plasma processes and treatments. In one embodiment, a plasma is ignited by subjecting a gas in a multi-mode processing cavity to... |
11/07/2006 |
| 07098420 | Electrode for use with atmospheric pressure plasma emitter apparatus and method for using the same A plasma emitter apparatus and method for using the same that includes a primary electrode and a secondary electrode. The secondary electrode is porous, that is, it is configured to permit the passage of plasma discharge therethrough.... |
08/29/2006 |
| 07087856 | System and method for determining an operational condition of a torch A system and associated method for determining an operational condition of a gas torch are provided. The system includes a diode device that is electrically connected between the workpiece and the nozzle. A sensing circuit is configured... |
08/08/2006 |
| 07057130 | Ion generation method and apparatus Method and apparatus for generating positive and negative ions include electrodes that are spaced apart by a gap and that are supplied alternating ionizing voltage at a frequency which causes the generated ions to move within the gap... |
06/06/2006 |
| 07034245 | Systems and methods for controlling pilot arc current in an arc cutting or welding machine The systems and methods of the present invention provide a circuit for controlling the magnitude of the main and pilot arc current provided to an arc cutting or welding machine. In one embodiment, the circuit allows the user to set the... |
04/25/2006 |
| 07034244 | Method and apparatus of coordinating operational feedback in a plasma cutter The present invention is directed to a system and method for improved operational feedback from a plasma torch to a plasma-cutting power source. A plasma cutter includes a plasma cutting power source, a plasma torch in communication with... |
04/25/2006 |
| 07030335 | Plasma reactor with overhead RF electrode tuned to the plasma with arcing suppression A plasma reactor for processing a semiconductor workpiece, includes a reactor chamber having a chamber wall and containing a workpiece support for holding the semiconductor workpiece, an overhead electrode overlying said workpiece... |
04/18/2006 |
| 07022935 | Plasma-cutting torch with integrated high frequency starter The present invention is directed to a system including a plasma cutting torch having an output electrode and a plasma cutter starting circuit configured to generate a pilot arc at the output electrode. |
04/04/2006 |
| 07015414 | Method and apparatus for determining plasma impedance A plasma processing system, method, and computer readable medium for measuring plasma impedance. The system includes a chamber configured to contain a plasma and including a chuck within an interior area of the chamber, the chuck... |
03/21/2006 |
| 07002097 | Switching device for mode transition of DC plasma torches The present invention obtains an automatic mode switching of DC plasma torches through, which easily switches DC plasma torches to be run between a transmitting mode and a non-transmitting mode and put the switching device under the... |
02/21/2006 |
| 06967305 | Control of plasma transitions in sputter processing systems Methods and apparatus for controlling a plasma used for materials processing feature cooperative action of a resonant circuit and a switch unit coupled to a plasma vessel and a power supply. A sensor for acquiring a signal associated with... |
11/22/2005 |
| 06943317 | Apparatus and method for fast arc extinction with early shunting of arc current in plasma There is provided by this invention a novel apparatus and method of operating a dc plasma process that diverts the power supply current from the plasma at the initiation of an arc, thereby inhibiting energy from flowing from the power... |
09/13/2005 |
| 06933461 | Tips and contact members having ridges for use in a contact start plasma arc torch A tip for a plasma arc torch includes a ridge for improved electrical contact with a starting member. |
08/23/2005 |
| 06933463 | Main arc ignition device and main arc ignition control method of plasma cutting machine A main arc ignition method capable of extending lives of a plasma electrode and a nozzle. For this purpose, before or immediately after starting arc, a plasma torch is supplied with a plasma gas at least either at a lower flow rate or at... |
08/23/2005 |
| 06903301 | Contact start plasma arc torch and method of initiating a pilot arc A contact start plasma arc torch is provided that comprises an electrode, a tip, and an initiator that is resiliently biased into contact with the tip, the initiator being movable against the resilient bias to separate from the tip and... |
06/07/2005 |
| 06867387 | Device for plasma incision of matter with a specifically tuned radiofrequency electromagnetic field generator A device to place an incision into matter with a harmonious plasma cloud. A radiofrequency generator system produces pulsed or continuous electromagnetic waveform which is transmitted by an active transmitter incising electrode tip. This... |
03/15/2005 |
| 06815633 | Inductively-coupled toroidal plasma source Apparatus for dissociating gases includes a plasma chamber comprising a gas. A first transformer having a first magnetic core surrounds a first portion of the plasma chamber and has a first primary winding. A second transformer having a... |
11/09/2004 |
| 06794601 | Plasma arc torch system with pilot re-attach circuit and method A plasma arc torch system, a circuit, and a method for controlling a pilot arc is disclosed. A rate of change sensor, such as a dv/dt sensor, monitors an output current signal or an output voltage signal to determine whether to close a... |
09/21/2004 |
| 06781085 | Method and apparatus of coordinating operating modes of a plasma cutter and a power supply The present invention is directed to a method and apparatus for coordinating the idle mode of a plasma cutter with the idle mode of a power supply so as to prevent lock-out of the plasma cutter when the power supply is in an idle... |
08/24/2004 |
| 06777638 | 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 workpiece, and the torch is operated selectively... |
08/17/2004 |
| 06753497 | Method and apparatus for initiating welding arc using plasma flow Methods and apparatus for initiating a welding arc by directing a plasma jet into the space between the tip of the welding electrode and the workpiece. This is done while an electrical potential is applied between the electrode and the... |
06/22/2004 |
| 06740841 | Plasma torch incorporating electrodes separated by an air gap and squib incorporating such a torch A plasma torch including at least two electrodes separated by an insulating cylindrical case having a void, wherein the electrodes are separated by a distance (D) for forming an igniting arc therebetween when the electrodes are connected... |
05/25/2004 |
| 06740842 | Radio frequency power source for generating an inductively coupled plasma A system for converting DC power (22) into an RF electromagnetic field in a processing chamber, the system being composed of: a coil (16) constructed to surround the processing chamber; and an RF power generator (20) including a... |
05/25/2004 |
| 06740843 | Method and apparatus for automatically re-igniting vacuum arc plasma source An apparatus and method are disclosed whereby if the arc in a DC or long-pulse AC vacuum arc plasma process (eg in vacuum deposition) starts to extinguish, this is automatically detected and a re-ignition process is activated. Detection... |
05/25/2004 |
| 06717096 | Dual mode plasma arc torch A dual mode plasma arc torch is provided that preferably comprises a start cartridge disposed between an electrode and a tip. In one form, the start cartridge comprises an initiator that is in electrical contact with the electrode and... |
04/06/2004 |
| 06703581 | Contact start plasma torch A contact start plasma torch and method of starting the torch includes a negatively charged cathode body and a positively charged anode body. A conductive element in the torch is constructed of an electrically conductive material and is... |
03/09/2004 |
| 06693253 | Multi-coil induction plasma torch for solid state power supply An induction plasma torch comprises a tubular torch body, a gas distributor head located at the proximal end of the torch body for supplying at least one gaseous substance into the chamber within the torch body, a higher frequency power... |
02/17/2004 |
| 06677551 | Process for operating a plasma arc torch A process for operating a plasma torch having an improved start up and shut down sequence to substantially increase electrode element life. The first shut down mode is controlled such that plasma gas flow through the swirl ring and nozzle... |
01/13/2004 |
| 06670572 | Solenoid control and safety circuit system and method A solenoid control and safety circuit suitable for use in connection with contact start, plasma-arc torches. The system monitors a voltage to determine when to open an air control solenoid as part of a contact starting process. If a... |
12/30/2003 |
| 06664497 | Toroidal low-field reactive gas source An apparatus for dissociating gases includes a plasma chamber that may be formed from a metallic material and a transformer having a magnetic core surrounding a portion of the plasma chamber and having a primary winding. The apparatus... |
12/16/2003 |
| 06633017 | System for plasma ignition by fast voltage rise An improved system of igniting a plasma using a rapid voltage rise and thus causing ions that may be pre-existing to create secondary electron emission or the like is provided. In one embodiment, the voltage rise can be timed to be... |
10/14/2003 |
| 06586887 | High-frequency power supply apparatus for plasma generation apparatus A high-frequency power supply apparatus for a plasma generation apparatus having a modulator for generating an intermittent high-frequency output on the basis of a modulation reference signal and a peak value setting signal, the... |
07/01/2003 |
| 06576860 | Plasma processing method and apparatus for eliminating damages in a plasma process of a substrate A plasma processing method comprises the steps of supplying a low-frequency bias to a first electrode carrying a substrate, and supplying a high-frequency power to a second electrode facing the first electrode, wherein the low-frequency... |
06/10/2003 |
| 06566625 | Welding apparatus and method The invention provides a plasma welding or brazing process in which a direct current pilot arc is maintained throughout the process. The process comprises the steps of setting a pilot arc power supply (6) to a relatively high level,... |
05/20/2003 |
| 06559408 | Toroidal low-field reactive gas source An apparatus for dissociating gases includes a plasma chamber that may be formed from a metallic material and a transformer having a magnetic core surrounding a portion of the plasma chamber and having a primary winding. The apparatus... |
05/06/2003 |
| 06552296 | Toroidal low-field reactive gas source An improved toroidal low-field plasma source allows plasma ignition within a wider range of gas conditions than permitted by prior art plasma sources. Power efficiency of the plasma source is improved by automatically adjusting the power... |
04/22/2003 |
| 06541729 | Monitoring and controlling separate plasma jets to achieve desired properties in a combined stream A plasma apparatus separately measures multiple plasma jets upstream of where the plasma jets converge into a combined plasma stream. The separate plasma jets can be separately adjusted to place the separate jets in a configuration that... |
04/01/2003 |