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| Number | Title | Issue Date |
| 7605341 | Metering system and method for supplying gas to a torch A metering system and associated method for supplying gas to a torch are provided. The metering system includes a controller that is configured to adjust a pressure regulator according to the pressure and flow rate of the gas delivered to the torch. For example, the... | 10/20/2009 |
| 7435929 | Methods for monitoring or controlling the ratio of hydrogen to water vapor in metal heat treating atmospheres Methods for monitoring a heat treating atmosphere supply a preselected gas atmosphere at a preselected temperature to a heat treating furnace. The preselected temperature is not greater than a temperature at which wustite (FeO) forms. The methods sense the preselect... | 10/14/2008 |
| 7429715 | Modular plasma arc torch A modular plasma arc torch is provided that comprises a torch head and a torch lead, and a quick disconnect that is operatively engaged between the torch head and the torch lead. Accordingly, the torch head and torch lead may be quickly assembled and disassembled th... | 09/30/2008 |
| 7411149 | inverter powered plasma cutting system with fixed gas flow control A lightweight and compact plasma cutting system includes a power source having an inverter and a non-adjustable regulator enclosed within the power source. The inverter is configured to generate a power signal suitable for a plasma arc process and the non-adjustable... | 08/12/2008 |
| 7375302 | Plasma arc torch having an electrode with internal passages An electrode for a plasma arc cutting torch which minimizes the deposition of high emissivity material on the nozzle, reduces electrode wear, and improves cut quality. The electrode has a body having a first end, a second end in a spaced relationship relative to the... | 05/20/2008 |
| 7375303 | Plasma arc torch having an electrode with internal passages An electrode for a plasma arc cutting torch which minimizes the deposition of high emissivity material on the nozzle, reduces electrode wear, and improves cut quality. The electrode has a body having a first end, a second end in a spaced relationship relative to the... | 05/20/2008 |
| 7342196 | Plasma spraying apparatus and also a method for monitoring the condition of a plasma apparatus The invention relates to a plasma spraying apparatus (1) including a plasma torch (2) for heating up a spray powder (3) in a heating zone (4) and a metering unit (5) for metering the spray powder (3), the metering unit (5... | 03/11/2008 |
| 7326875 | Method for supplying a plasma torch with a gas, mixed gas, or gas mixture, comprising volumetric flow regulation in combination with pressure regulation; and arrangement for carrying out said method A method of supplying a plasma torch with a gas, mixed gas or gas mixture, in which the volume flow of the gas, mixed gas or gas mixture is controlled, characterised in that the volume flow control is effected in combination with a pressure control of the gas, mixed... | 02/05/2008 |
| 7220937 | Plasma reactor with overhead RF source power electrode with low loss, low arcing tendency and low contamination A gas distribution ceiling electrode for use as a capacitive source power applicator and gas distribution showerhead in a plasma reactor includes a metal base and a process-compatible protective layer on the interior surface of he electrode having a dopant impurity ... | 05/22/2007 |
| 7199328 | 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 controller that controls the ga... | 04/03/2007 |
| 7186947 | Process monitor for laser and plasma materials processing of materials A method for monitoring the processing of a workpiece includes directing an incident laser beam onto the workpiece and measuring a signal emitted from the workpiece. At least two signals are generated by a detector based upon the emitted signal. A workpiece processi... | 03/06/2007 |
| 7153398 | Method for producing fullerene-containing carbon and device for carrying out said method The inventive method for producing fullerene-containing carbon and the device for carrying out said method relate to the chemical industry and are used for producing fullerenes. Said method for producing fullerene-containing carbon consists in vaporising graphite in... | 12/26/2006 |
| 7115833 | Metering system and method for supplying gas to a torch A metering system and associated method for supplying gas to a torch are provided. The metering system includes a controller that is configured to adjust a pressure regulator according to the pressure and flow rate of the gas delivered to the torch. For example, the... | 10/03/2006 |
| 7045737 | Glass-processing method and glass-processing apparatus for the method A glass-processing method adjusts the range of the heating region according to the work piece and processing condition, and a glass-processing apparatus implements the method. The method incorporates the heating of a glass body with a thermal plasma torch comprising... | 05/16/2006 |
| 7034244 | 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 the plasma cutting power sou... | 04/25/2006 |
| 6967304 | Feedback enhanced plasma spray tool An improved automatic feedback control scheme enhances plasma spraying of powdered material through reduction of process variability and providing better ability to engineer coating structure. The present inventors discovered that controlling centroid position of th... | 11/22/2005 |
| 6960737 | Gas flow pre-charge for a plasma arc torch A system for controlling gas flow from a gas source, through a gas conduit, and to a plasma arc torch during a transition from a cold flow when no arc is present to a hot flow when an arc is provided by the present invention. The system comprises a first solenoid in... | 11/01/2005 |
| 6947802 | Centralized control architecture for a laser materials processing system Apparatus, systems, and methods for monitoring the processing of a workpiece that includes directing an incident laser beam onto the workpiece and using an optical detector for measuring a signal emitted from the workpiece as a result of the incident laser beam. The... | 09/20/2005 |
| 6933463 | 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 lower gas pressure; the plas... | 08/23/2005 |
| 6900408 | Centralized control architecture for a plasma arc system The invention features a centralized control architecture for a closely-coupled plasma arc system, in which the “intelligence” of the system is integrated into a single controller. The closely-coupled plasma arc system includes a power source, an automatic proce... | 05/31/2005 |
| 6897403 | Plasma processing method and plasma processing apparatus A plasma processing apparatus capable of processing the surface of a workpiece more precisely is provided. The plasma processing apparatus for supplying a gas between a sample and a sample table to generate plasma for processing the sample, comprises an adjusting de... | 05/24/2005 |
| 6872909 | Toroidal low-field reactive gas and plasma source having a dielectric vacuum vessel Plasma ignition and cooling apparatus and methods for plasma systems are described. An apparatus can include a vessel and at least one ignition electrode adjacent to the vessel. A total length of a dimension of the at least one ignition electrode is greater than 10%... | 03/29/2005 |
| 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 workpiece, and the torch is operated selectively in the working and standby mo... | 08/17/2004 |
| 6772040 | Centralized control architecture for a plasma arc system The invention features a centralized control architecture for a closely-coupled plasma arc system, in which the “intelligence” of the system is integrated into a single controller. The closely-coupled plasma arc system includes a power source, an automatic proce... | 08/03/2004 |
| 6706994 | Welding torch assembly including quick connect fittings A welding torch assembly includes a torch body, a plurality of quick connect fittings and an elongated electrically insulated handle. The torch body includes a plurality of utility supply lines extending from the torch body with one of the quick connect fittings cou... | 03/16/2004 |
| 6700091 | Plasma arc torch trigger system A trigger system for operating a plasma arc torch is provided that comprises a selector that operates between at least a first operating position and a second operating position, wherein the first operating position operates the plasma arc torch in a firs... | 03/02/2004 |
| 6700093 | Dielectric barrier discharge apparatus and module for perfluorocompound abatement A dielectric barrier discharge apparatus and module for perfluorocompound (PFC) abatement. The apparatus includes a housing, first dielectric tube disposed in the housing, a second dielectric tube disposed in the first dielectric tube, and at least one el... | 03/02/2004 |
| 6689983 | Torch handle gas control Devices and methods are provided that control gas flow to a plasma arc torch local to a torch handle. Generally, a plasma arc torch is provided that comprises a gas control device operable with a torch lead and a torch head, and an activation member opera... | 02/10/2004 |
| 6677551 | 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 prevents the for... | 01/13/2004 |
| 6677549 | Plasma processing apparatus having permeable window covered with light shielding film To provide a production method of a structure with which a degradation of a processing speed is suppressed and plasma processing is performed with using a reliable plasma processing apparatus and which is excellent in repeatability, a plasma processing ap... | 01/13/2004 |
| 6670572 | 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 proper voltage is sens... | 12/30/2003 |
| 6622058 | Centralized control architecture for a plasma arc system The invention features a centralized control architecture for a closely-coupled plasma arc system, in which the "intelligence" of the system is integrated into a single controller. The closely-coupled plasma arc system includes a power source, an automati... | 09/16/2003 |
| 6498317 | 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 prevents the for... | 12/24/2002 |
| 6444943 | Method and apparatus for controlling plasma flow A method and apparatus for simultaneously cleaning and bonding a wire to a bonding surface is presented. In accordance with the invention, a gas is energized to form a plasma, which is then directed in a directional pressurized flow at the wire and bondin... | 09/03/2002 |
| 6420672 | Method and apparatus for detecting an inadequate gas supply for a plasma cutter A method and apparatus for plasma cutting is disclosed. A regulated flow of gas is provided to the torch. Power is also provides to the torch. A controller controls the system and includes a delay circuit. A gas pressure sensor is connected to the torch a... | 07/16/2002 |
| 6407358 | Process and unit for plasma-arc working with a gas having controlled O2 and N2 contents Process and unit for the arc working, particularly plasma cutting, of a workpiece, in which a plasma torch is supplied with an electric current and with a gas mixture containing oxygen and nitrogen, and a plasma jet obtained by the ionization of the gas m... | 06/18/2002 |
| 6372298 | High deposition rate thermal spray using plasma transferred wire arc Method of thermally depositing metal at increased rates onto a target surface, comprising: establishing and operating a high velocity plasma transferred wire arc between a cathode and the free-end of a consumable wire electrode, the energy of such plasma ... | 04/16/2002 |
| 6348670 | Energy storage apparatus and discharge device for magnetic pulse welding and forming An energy storage system for use in a magnetic pulse welding and forming apparatus includes a bank of capacitors and a very-low inductance conductive bus system interconnecting the capacitors. The energy storage system further includes an energy source co... | 02/19/2002 |
| 6335505 | Control of the plasma cutting gas flow on the basis of the pressure of the pilot gas The invention relates to an automatic plant for cutting or welding by gas jet, especially by plasma jet, comprising a torch (T), a first pilot-gas line (L1), a second cutting- or welding-gas line (L2), control means (MP), first element (MR1) for adjusting... | 01/01/2002 |
| 6333481 | Process and unit for plasma-arc working with a gas mixture based on hydrogen, nitrogen and/or argon Process and unit for the arc working, particularly plasma cutting, of a workpiece, in which a plasma torch is supplied with an electric current and with a gas mixture containing hydrogen and nitrogen and/or argon, and a plasma jet obtained by the ionizati... | 12/25/2001 |
