Power Supply Patents (Class 219/121.34)
  • Publication number: 20150108096
    Abstract: A system and method to correct for height error during a robotic welding additive manufacturing process. One or both of a welding output current and a wire feed speed are sampled during a robotic welding additive manufacturing process when creating a current weld layer. A plurality of instantaneous contact tip-to-work distances (CTWD's) are determined based on at least one or both of the welding output current and the wire feed speed. An average CTWD is determined based on the plurality of instantaneous CTWD's. A correction factor is generated, based on at least the average CTWD, which is used to compensate for any error in height of the current weld layer.
    Type: Application
    Filed: December 19, 2013
    Publication date: April 23, 2015
    Applicant: Lincoln Global, Inc.
    Inventor: JOSEPH A. DANIEL
  • Patent number: 8969753
    Abstract: A plasma treatment installation including at least two stationary workpiece holders adapted for controlled rotation about their respective axis and having supporting plates for supporting workpieces for the treatment thereof, at least one hood to be set on a workpiece holder that is adapted to enclose each of a plurality of workpiece holders to form a sealed treatment space, and a manipulator for automatically equipping the supporting plates of a workpiece holder with workpieces, while the other workpiece holder is covered by the hood to perform the plasma treatment of the workpieces.
    Type: Grant
    Filed: May 17, 2007
    Date of Patent: March 3, 2015
    Inventor: Siegfried Straemke
  • Patent number: 8158056
    Abstract: An arrangement producing metal nanoparticles includes a ?-ray irradiator installed in a radioactive shielding room, a reactor that is disposed to oppose the ?-ray irradiator, and a power supply installed outside the radioactive shielding room to supply power to the reactor. The reactor includes a container receiving reaction materials and transmitting the energy of ?-rays to reaction materials arranged inside of the reactor, an agitator that is installed in the container to be capable of rotating, and a driving source for receiving the power from the power supply to drive the agitator.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: April 17, 2012
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Geun-Seok Chai, Myoung-Ki Min, Soon-Ki Kang
  • Publication number: 20100294743
    Abstract: To provide an electric discharge device capable of performing an optimum process that achieves a high-quality process in a satisfactory quality of processing precision and the like. In an electric discharge device that processes a workpiece by electric discharge, a reserve electric-discharge pulse is applied by alternately switching between a positive polarity and a reverse polarity, and a current waveform shape of a main electric-discharge pulse is differentiated corresponding to a polarity of a reserve electric-discharge pulse, to a main electric-discharge pulse to be applied after detecting electric discharge following the reserve electric-discharge pulse. With this arrangement, a processing current shape can be optimized corresponding to an electric discharge characteristic, and thus a high-precision process can be performed.
    Type: Application
    Filed: January 31, 2008
    Publication date: November 25, 2010
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takashi Hashimoto, Koichiro Hattori, Takashi Yuzawa, Yoshikazu Ukai
  • Patent number: 6740207
    Abstract: Sparking is suppressed during high-frequency sputtering by a high-frequency generator (5) which has a controlled switching unit (13) that is connected upstream in relation to the output of the generator. A high-frequency supply signal that is generated at the output of the high-frequency generator is stopped for plasma discharge (PL) for a short time, by the switching unit.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: May 25, 2004
    Assignee: Unaxis Deutschland GmbH
    Inventors: Andreas Kloeppel, Christoph Daube, Johannes Stollenwerk, Thomas Linz
  • Publication number: 20040065644
    Abstract: The invention provides a welding system capable of freely controlling the dispersion and concentration of arc heat over the groove face with an extreamly narrow gap and a high strength and high quality welded joint structure which is formed by this welding system and which is capable of preventing softening/hardening of the structure, the lowering of the toughness thereof and the generation of a crack. According to the welding system, the melting rate of a welding wire is controlled relative to the welding wire feeding rate by changing the characteristic of an arc current so that the range of behavior and the transfer rate of the arc pole (the arc generating main point at a groove surface) are controlled. Further, the welded joint structure consists of a high strength steel having a superfine grain structure with a carbon equivalent of as low as less than 0.
    Type: Application
    Filed: September 15, 2003
    Publication date: April 8, 2004
    Inventors: Kazuo Hiraoka, Terumi Nakamura
  • Patent number: 6713710
    Abstract: An apparatus, system and related method are disclosed for performing trackless movement and full penetration welding along a weld line, irrespective length and configuration of a butt joint. A pre-existing gap of the weld line is used to act a guide slot and a guide wheel unit to track the gap is designed to perform trackless movement using an electric or manual winch as a driver. In the automatic arc welding systems, the guide slot and the guide wheel unit can save an external track and a seam-tracking device. A movable weld backing is held against the underside of the weld line to support liquid metal and control backside bead to achieve full-penetration welding of a butt weld. The movable weld backing and a welder are arranged the underside and the topside of base metals to be welded, respectively, using a connector member through the pre-existing gap of the weld line. According to the apparatus, flux-cored wire plasma arc can perform full penetration welding.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: March 30, 2004
    Inventor: Shaobin Zhang
  • Patent number: 6547978
    Abstract: Copper can be pattern etched in a manner which provides the desired feature dimension and integrity, at acceptable rates, and with selectivity over adjacent materials. To provide for feature integrity, the portion of the copper feature surface which has been etched to the desired dimensions and shape must be protected during the etching of adjacent feature surfaces. This is particularly important for feature sizes less than about 0.5 &mgr;m, where presence of even a limited amount of a corrosive agent can eat away a large portion of the feature.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: April 15, 2003
    Assignee: Applied Materials Inc.
    Inventors: Yan Ye, Allen Zhao, Xiancan Deng, Diana Xiaobing Ma, Chang-Lin Hsieh
  • Publication number: 20020104753
    Abstract: The aim of the invention is to suppress sparking during high-frequency sputtering. A high-frequency generator (5) is provided which has a controlled switching unit (13) that is connected upstream in relation to the output of said generator. A high-frequency supply signal that is generated at the output of the high-frequency generator is stopped for plasma discharge (PL) for a short time and by means of said switching unit.
    Type: Application
    Filed: March 28, 2002
    Publication date: August 8, 2002
    Inventors: Andreas Kloeppel, Christoph Daube, Johannes Stollenwerk, Thomas Linz
  • Patent number: 6363300
    Abstract: Process for the automatic determination of an optimal movement program of a robot comprising at least one moving member, a motor associated with the moving member and a control unit capable of activating the motor according to a movement program to move the moving member along a trajectory with a predetermined movement parameter. The process comprises the steps of: acquiring data indicating the load state of the motor and the precision of movement of the robot during the execution of a movement program, comparing the information on the load state and on the precision of movement with predetermined limit values, repeatedly executing the movement program while progressively varying the movement parameter until a measured value of the load state and/or of the precision of movement exceeds a corresponding limit value, and storing as the optimal movement program the last movement program which has been executed without exceeding the limit values.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: March 26, 2002
    Assignee: Comau S.p.A.
    Inventor: Marco-Severo Inga