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| Number | Title | Issue Date |
| 7582847 | System for making braces for dies A system and method for producing braces for a cavity die having a predetermined shape are disclosed. The system includes an input file containing information about the shape of the cavity die and a bracing program running on a computer. The bracing program produces... | 09/01/2009 |
| 7202440 | 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 that is resiliently biased into... | 04/10/2007 |
| 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 |
| 7140233 | Immersion lithography proximity sensor having a nozzle shroud with flow curtain The present invention is directed to an immersion lithography proximity sensor having a nozzle shroud with a flow curtain. The immersion lithography proximity sensor includes a shroud that affixes to the nozzle. A plenum is located inside the shroud that holds a shr... | 11/28/2006 |
| 7138600 | Automatic pulse plasma welding method and apparatus for forming lap joint between membrane sheets Disclosed herein is an automatic pulse plasma welding method and apparatus for forming a lap joint between membrane sheets, which applies plasma welding to a lap joint between membrane sheets to improve working efficiency and productivity, and which provides optimal... | 11/21/2006 |
| 7134321 | Fluid gauge proximity sensor and method of operating same using a modulated fluid flow A system and method that use a fluid gauge proximity sensor. A source of modulated unidirectional or alternating fluid flow travels along at least one path having a nozzle and a flow or pressure sensor. The fluid exists at a gap between the nozzle and a target. The ... | 11/14/2006 |
| 7087855 | Plasma cutting apparatus and control unit thereof Cutting quality of the product, in particular, hole cutting quality, in plasma arc cutting is improved. A control unit, which controls a plasma cutting apparatus for cutting a product from a plate material by moving a plasma torch at a cutting speed along a cutting ... | 08/08/2006 |
| 7084368 | Thermal cutting machine and cutting method using same A thermal cutting machine and a cutting method using the same are described, which employ a simple, long-life torch hood for effectively shutting off spatter, the torch hood enabling easy supervision of the cut condition of a workpiece and easy replacement of the co... | 08/01/2006 |
| 7071441 | Cutting system controls, including height control A cutting system is disclosed for a plasma cutting torch movable by a driver relative to a work piece along a Z-axis. During cutting, the torch provides an arc voltage proportional to a distance between the torch and the work piece. A height control feedback circuit... | 07/04/2006 |
| 7022937 | Plasma processing method and apparatus for performing uniform plasma processing on a linear portion of an object A plasma processing method is used to process a linear portion of an object to be processed by generating a linear plasma by supplying an electric power to an electrode provided at a plasma source or the object to be processed while supplying gas to the plasma sourc... | 04/04/2006 |
| 7017390 | Proximity sensor nozzle shroud with flow curtain The present invention is directed to an apparatus for reducing the impact of cross winds on gas flow emitted from a nozzle. The apparatus includes a shroud that affixes to the nozzle. A plenum is located inside the shroud that holds a shroud gas, which is fed into t... | 03/28/2006 |
| 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 conductive sleeve concentric with the tube to define an annular chamber betw... | 02/14/2006 |
| 6949716 | Process for treating with an atmospheric plasma electrically conductive materials and a device therefor Process for the surface treatment of an object made of an electrically conductive material, with an atmospheric plasma, including the generation of plasma jets by plasma generators, the application of the plasma jets to a surface of the object to be treated, and the... | 09/27/2005 |
| 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 |
| 6943316 | Arrangement for generating an active gas jet The invention is directed to an arrangement for generating a chemically active jet (active gas jet) by a plasma generated by electric discharge in a process gas. It is the object of the invention to find a novel possibility for generating a chemically active jet by ... | 09/13/2005 |
| 6914209 | Plasma arc machining method Not only damage to a nozzle caused by spatter generated during piercing is prevented but also the deterioration of the nozzle owing to a pilot arc is restrained, whereby the service life of the nozzle is significantly increased. To this end, the plasma torch is posi... | 07/05/2005 |
| 6903300 | Method for thermally working a workpiece, thermal working machine therefor, and cutting or welding tool suited for use in the working machine A thermal working tool (1) is movable along a workpiece surface (7) and includes a torch head (2) which has exchangeably mounted thereon cutting or welding tools (3; 4; 5) extending between the torch head (2) and the workpiece surf... | 06/07/2005 |
| 6794598 | Arc electrodes for synthesis of carbon nanostructures An arc electrode structure, for producing carbon nanostructures, which includes a first electrode and two or more second electrodes disposed within a chamber is provided. The electrodes are connected to a voltage potential to produce an arc-plasma region. The first ... | 09/21/2004 |
| 6781087 | Three-phase plasma generator having adjustable electrodes Three adjustable electrodes (33a-33c) within a chamber (40) form a thermal plasma generating system (30). The electrodes (33a-33c) are positioned with a narrow gap at one portion and a wide gap at... | 08/24/2004 |
| 6776324 | Wire bonding apparatus A wire bonding apparatus including a capillary, which allows a tip end of a bonding wire to protrude from the bottom, and a discharge electrode, which generates a spark between the electrode and the tip end of the wire by an electrical discharge; and auxiliary elect... | 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 |
| 6753498 | Automated electrode replacement apparatus for a plasma processing system A plasma processing system includes an automated electrode retention mechanism (130) for providing automated engagement of a source electrode (152) with a drive electrode (154). In addition, an automated electrode handling system (320) is... | 06/22/2004 |
| 6703579 | Arc control for spraying A thermal spraying system includes thermal spray material, an electrical energy thermal spraying device atomizing and spraying the thermal spray material, a power supply supplying electrical power to the spraying device, a sensor monitoring a power charac... | 03/09/2004 |
| 6659110 | Method and apparatus for cleaning drums or belts A method of removing organic impurities from a surface of a substrate that is used for feeding or processing web material, wherein a jet of an atmospheric plasma is directed onto the surface of the substrate.... | 12/09/2003 |
| 6359251 | 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... | 03/19/2002 |
| 6313429 | Dual mode plasma arc torch for use with plasma arc treatment system and method of use thereof A plasma arc torch that is capable of operating in a non-transferred arc mode and a transferred arc mode, and that is intended for use for use with a plasma arc treatment system. The plasma arc torch includes an electrode, a plasma gas ring and a nozzle. ... | 11/06/2001 |
| 6028287 | Plasma arc torch position control A torch height control system maintains a substantially constant operating parameter of the arc during processing of a workpiece by measuring the operating parameter, comparing the operating parameter to a reference value to generate a deviation, adjustin... | 02/22/2000 |
| 5998757 | Plasma torch system with height adjustment To improve a plasma torch system comprising a high-frequency plasma torch with a plasma torch device for generating therein a plasma flame by supplying high-frequency power, and a processing chamber for positioning therein workpieces which are to be proce... | 12/07/1999 |
| 5866872 | Plasma arc torch position control A plasma arc torch system includes a plasma arc torch and a positioning apparatus for automated processing of workpieces. In order to maintain consistent cut quality, a controller maintains arc voltage at a predetermined reference value by controlling a s... | 02/02/1999 |
| 5844196 | System and method for detecting nozzle and electrode wear A system and method for detecting nozzle and electrode wear of plasma arc torches in which the average change in the stand-off between the electrode or the nozzle assembly of the plasma arc torch and a workpiece is monitored, and corrective measures are t... | 12/01/1998 |
| 5773788 | Gas mixtures for plasma arc torch cutting and marking systems A method of operating a plasma arc torch for marking a metallic workpiece spaced a stand-off distance from the torch utilizes a torch that includes a body, an electrode, and a nozzle mounted in the body so as to define a plasma chamber. The nozzle has a c... | 06/30/1998 |
| 5756960 | Detecting non-symmetrical nozzle wear in a plasma arc torch A method and apparatus for detecting non-axisymmetric wear (i.e. grooving 22) of the orifice (12) of the nozzle (13) of a plasma arc torch (1) involves placement of a probe adjacent a plasma jet (21) that emerges from the nozzle (13) such that a number of... | 05/26/1998 |
| 5560843 | Frame construction and a machining device provided with it The present invention provides for a frame construction which comprises frames wherein a machining tool and functional devices for making the tool operate are mounted on separate frames, and the respective frames can run independently. The present inventi... | 10/01/1996 |
| 5550344 | Mounting apparatus for a cutting torch having soft touch height control An apparatus for mounting a cutting torch to a shape cutting machine is adapted to detect contact between the torch and a workpiece in the vertical direction, and between the torch and an obstruction in a lateral direction. The mounting apparatus includes... | 08/27/1996 |
| 5521350 | Stand-off control apparatus for plasma processing machines A stand-off control apparatus for plasma processing machines which is capable of maintaining an optimum stand-off even when a processing speed varies. In a stand-off control apparatus for plasma processing machines which is provided with a microcomputer (... | 05/28/1996 |
| 5506384 | Plasma arc cutting machine with variable constant current source and variable resistor A first stop valve (4) is connected in parallel with a serially connected second stop valve (7) and a gas flow regulating means (6) between a supply of working gas and a plasma torch (1). In response to a start signal ST, the second stop valve ... | 04/09/1996 |
| 5468929 | Apparatus for adjusting the stand-off height of a plasma arc torch or the like The stand-off height of a plasma arc torch relative to an underlying workpiece is adjusted by rotating a collar on an adaptor to which the torch is affixed. When the collar is rotated, a camming action occurs to effect upward or downward movement of the t... | 11/21/1995 |
| 5453305 | Plasma reactor for processing substrates A plasma reactor and method for forming a dense plasma from a gas is described incorporating a housing, a gas inlet to the housing, a pump for evacuating the housing, a magnetic coil to generate a magnetic field in the housing, a radio frequency power sup... | 09/26/1995 |
| 5420390 | Image heating apparatus using a microwave discharge plasma lamp An improved image heating apparatus using a plasma lamp is disclosed. The apparatus comprises at least one rotary elliptical mirror having a reflection surface of a rotary elliptical body at the inside; a plasma lamp disposed at a first focal point of the... | 05/30/1995 |
| 5371336 | Device for contact-free data gathering from a thermal machining system The invention relates to a device for contact-free data gathering from a thermal machining system with at least one machining tool and one workpiece which is characterized in that the workpiece is connected to an alternating voltage generator and receives... | 12/06/1994 |
