| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 219121470 | Spray coating | 13 |
| 20080251503 | MODULAR PLASMA SPRAY GUN - The present invention provides a modular plasma spray gun including a sleeve, a core, and a water tube connectable to the sleeve. The sleeve has a cylindrical sidewall defining a central opening through a length thereof for receiving the core. The sleeve includes a mounting member for mounting the sleeve and an associated spray gun to a spray gun manipulator. The core receives an anode housing and is removably disposed in the central opening of the sleeve and includes forward and rearward portions defined by a stepped central bore through a length thereof. The forward portion receives an anode housing therein, the rearward portion for carrying coolant to and from the anode housing. The coolant inlet tube, coolant outlet tube, and gas inlet tube are manually detachable from an opening in the plasma spray gun assembly and have manually removable locks to prevent tube detachment. | 10-16-2008 |
| 20090014423 | CONCENTRIC FLOW-THROUGH PLASMA REACTOR AND METHODS THEREFOR - The present invention provides a radiofrequency plasma apparatus for the production of nanoparticles and method for producing nanoparticles using the apparatus. The apparatus is designed to provide high throughput and makes the continuous production of bulk quantities of high-quality crystalline nanoparticles possible. The electrode assembly of the plasma apparatus includes an outer electrode and a central electrode arranged in a concentric relationship to define an annular flow channel between the electrodes. | 01-15-2009 |
| 20090206062 | Portable Plasma Sterilizer - A handheld air plasma spray is designed. Plasma is generated by a magnetized arc torch running at 60 Hz and is in non-equilibrium state; thus, the plasma effluent has relatively low temperature (touchable) and yet contains high energy electrons (>5 eV) capable to dissociate oxygen molecules to atomic oxygen. The emission spectroscopy of the torch indicates that the plasma effluent carries an abundance of atomic oxygen, which can effectively kill all kind microbes. Moreover, the experimental results show that this plasma can rapidly clot blood. This invention is for sterilization and blood coagulation applications. | 08-20-2009 |
| 20100096368 | Deposition apparatus and methods - Microspray apparatus and methods involve injecting powdered material into a plasma gas stream. The material comprises first and second component powders. The second powder is a majority by the weight of the powdered material. The first powder acts as a melting point depressant. The first and second powders may have similar compositions but with the first powder including a greater quantity of a melting point depressant element. | 04-22-2010 |
| 20100200549 | Microplasma Spray Apparatus and Method for Coating Articles Using Same - A microplasma spray coating apparatus includes a microplasma apparatus with an anode, cathode, and an arc generator for generating an electric arc between the anode and cathode. An arc gas emitter injects inert gas through the electric arc. The electric arc is operable for ionizing the gas to create a plasma gas stream. A powder injector nozzle extends through the anode and injects powdered material into the plasma stream for transfer to the workpiece. | 08-12-2010 |
| 20100237050 | Hybrid nozzle for plasma spraying silicon - A hybrid nozzle for use in a plasma spray gun, especially for plasma spraying silicon to form semiconductor devices such as solar cell. The outlet of the gun includes a two-piece annular electrode against which the plasma is ignited and through which the plasma plume exits the gun together with entrained silicon. In one embodiment, the upstream part is composed of graphite to allow ignition of the plasma and the downstream part is composed of pure silicon. In another aspect, the silicon feedstock is injected into the plasma plume through ports formed through the silicon part. | 09-23-2010 |
| 20100252539 | METHOD OF DEPOSITING A THERMAL BARRIER BY PLASMA TORCH - The invention relates to the field of methods of depositing a material on a substrate. It relates to a method of depositing, onto a substrate, a material that acts as a thermal barrier and that prior to deposition is in powder form. The powder is introduced into the plasma jet of a first plasma torch and into the plasma jet of at least one second plasma torch, the first plasma torch and at least the second plasma torch being disposed in an enclosure and oriented in such a manner that their plasma jets cross, so as to create a resultant plasma jet in which the powder is vaporized, the substrate being placed on the axis of the resultant plasma jet. | 10-07-2010 |
| 20110000895 | MULTI-ELECTRODE PLASMA SYSTEM AND METHOD FOR THERMAL SPRAYING - A plasma apparatus is provided including a cathode module, an anode module, and at least one inter-electrode insert located between the cathode module and the anode module. The cathode module includes at least one cathode, and a pilot module may be provided adjacent to the cathode module. The pilot module may assist ignition of the plasma apparatus. The inter-electrode insert may have an upstream and a downstream transverse surface. Both the upstream transverse surface and the downstream transverse surface are angled in a downstream direction. | 01-06-2011 |
| 20110303645 | POWER DELIVERY UNIT, PLASMA SPRAY SYSTEM, AND METHOD OF USING PLASMA SPRAY SYSTEM - Different plasma spray guns have differing current and voltage requirements for their operation. The spray guns generally fall into low voltage high current and high voltage low current types. The power requirements of the guns vary greatly in terms of overall power ranging from few tens of kilowatts to few hundreds of kilowatts. The guns also have wide ranging requirements for voltage and current. A power delivery unit is described in which the unit is capable of delivering the wide range of power as well as the wide ranges of voltage and current. A plasma spray system with such power delivery unit can universally operate both the low voltage high current and high voltage low voltage spray gun types. Such system can reduce capital and operation costs since shops need not maintain separate and incompatible plasma spray systems. | 12-15-2011 |
| 20120160813 | Thermal Spray Method and Apparatus Using Plasma Transferred Wire Arc - A method of thermally depositing metal onto a target surface using a plasma transferred wire arc thermal spray apparatus, wherein the method includes the steps of offsetting the central axis of a consumable wire with respect to an axial centerline of a constricting orifice; and establishing and operating a plasma transferred wire arc between a cathode and a free end of the consumable wire; and melting and atomizing a continually fed free end of the consumable wire into molten metal particles and projecting the particles onto said target surface. | 06-28-2012 |
| 20140166630 | PLASMA SPRAYING APPARATUS - The plasma spraying apparatus includes a cathode, a first gas nozzle surrounding a head of the cathode therewith to form a first gas path outside of the cathode, and a second gas nozzle surrounding the first gas nozzle therewith to form a second gas path outside of the first gas nozzle. The second gas nozzle is formed with a wire path through which a wire is inserted such that a distal end of the wire is disposed in front of a nozzle opening of the second gas nozzle. The wire path has a substantially rectangular cross-section having a longer side extending in a direction in which the plasma flame extends, the wire path causing the wire to bend within elastic limit of the wire. | 06-19-2014 |
| 20140326703 | EXTENDED CASCADE PLASMA GUN - Plasma gun and method of applying powder to a substrate with a plasma gun. The plasma gun includes a cathode assembly ( | 11-06-2014 |
| 20160024635 | Plasma Systems and Methods Including High Enthalpy And High Stability Plasmas - The present disclosure generally relates to systems, apparatus and methods of plasma spraying and plasma treatment of materials based on high specific energy molecular plasma gases that may be used to generate a selected plasma. The present disclosure is also relates to the design of plasma torches and plasma systems to optimize such methods. | 01-28-2016 |
