Class / Patent application number | Description | Number of patent applications / Date published |
219760130 | By spark discharge | 6 |
20110042356 | ELECTRODE COATING APPARATUS AND METHOD - A coating deposition apparatus has first and second charge sources. The first charge source is chargeable to a first voltage potential and the second charge source is chargeable to a second voltage potential. The coating deposition apparatus also has a first output terminal and a deposition substance connected thereto, and a second output terminal for connection to a workpiece. The consumable deposition substance is movable relative to the workpiece. The first charge source is connected between the first and second terminals whereby the first voltage potential is established therebetween. The second charge source is connected between the terminals. The coating deposition apparatus also has discharge control circuitry connected to the first and second charge sources to inhibit discharge of the second charge source through the terminals prior to commencement of discharge of the first charge source through the terminals. | 02-24-2011 |
20110290764 | DEVICE FOR CONTROLLING THE ON AND OFF TIME OF THE METAL OXIDE SEMICONDUCTOR FIELD EFFECT TRANSISTOR (MOSFET), A DEVICE FOR SPARK COATING THE SURFACES OF METAL WORK PIECE INCORPORATING THE SAID CONTROL DEVICE AND A METHOD OF COATING METAL SURFACES USING THE SAID DEVICE - The present invention is a device for coating surfaces of metallic work pieces with an electrically conductive material by employing short duration high current packets of pulses in which the work piece forms the cathode and the consumable coating material forms the anode, which are connected to a generator for generating pulses by charging and discharging a bank of capacitors using a MOSFET. The invention is also a device for controlling the on and off time of a metal oxide semiconductor field effect transistor (MOSFET) | 12-01-2011 |
20120193329 | POWDER MICRO-SPARK DEPOSITION SYSTEM AND METHOD - A powder micro-spark deposition system is provided. The deposition system includes an electrode and a powder feed channel configured within or at least partially surrounding the electrode for guiding powder comprising electrically conductive material into a gap between the electrode and the substrate. A powder micro-spark deposition method is also provided. | 08-02-2012 |
20120248070 | METHOD AND DEVICE FOR COATING TURBINE COMPONENTS - A method and portable device for modifying or coating a surface of turbine components in the field includes an ESD torch electrically connected with ESD equipment. The ESD torch includes an inert gas source, vibration source, and electrode disk of conductive material. The electrode disk is disposed within the ESD torch, shielded by an inert gas and coupled with the vibration source. The electrode disk is rolled over the surface, which actuates the electrode disk and deposits the conductive material from the electrode disk onto the surface of the workpiece to form the compositionally controlled protective coating. The compositionally controlled protective coating deposited by the electrode disk forms a metallurgical bond with the surface of the workpiece to prevent erosion of the workpiece. | 10-04-2012 |
20140027410 | METHOD AND SYSTEM FOR REDUCING OVERSIZED HOLES ON TURBINE COMPONENTS - A system is disclosed for reducing an internal diameter of a hole in a metal substrate. The system includes an electrospark device having an electrospark torch and an electrode holder rotatable about an axis. An electrode is removably supported in the electrode holder. The electrospark device configured to apply a coating of a material of which the electrode is formed, to the substrate on an inner wall of the hole when the electrode is rotated within the hole. | 01-30-2014 |
20160167180 | DIRECT DEPOSITION OF METALLIC COATING | 06-16-2016 |