With Charging Electrode Mounted On Spray Device Patents (Class 239/706)
  • Patent number: 9687864
    Abstract: This disclosure describes the application of a supplemental corona source to provide surface charge on submicrometer particles to enhance collection efficiency and micro-structural density during electrostatic collection.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: June 27, 2017
    Assignee: Battelle Memorial Institute
    Inventors: John L. Fulton, George S. Deverman, Dean W. Matson, Clement R. Yonker, C. Douglas Taylor, James B. McClain, Joseph M. Crowley
  • Patent number: 9032905
    Abstract: An apparatus and method for coating a substrate using one or more liquid raw materials, includes: at least one atomizer for atomizing the one or more liquid raw materials into droplets, charging means for electrically charging the droplets during or after the atomization and a deposition chamber in which the droplets are deposited on the substrate, the deposition chamber being provided with one or more electric fields for guiding the electrically charged droplets on the substrate. According to the invention there is a charging chamber arranged upstream of the deposition chamber and provided with charging means for electrically charging the droplets.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: May 19, 2015
    Assignee: BENEQ OY
    Inventors: Sami Kauppinen, Markku Rajala
  • Patent number: 8840050
    Abstract: For grounding or electrically charging the shaft of an electrostatic rotary atomizer working with external or direct charging, there are opposing, annular or spiral-shaped sharp edges in the outer surface of a part of the shaft and in the inner surface of a stationary bearing part at the desired potential, which have different, preferably opposite, thread directions, so that the edges intersect each other at points.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: September 23, 2014
    Assignee: Durr Systems, Inc.
    Inventors: Michael Baumann, Frank Herre, Hans J. Nolte, Harry Krumma, Stefano Giuliano, Björn Lind
  • Patent number: 8794177
    Abstract: A coating apparatus has a rotary atomizing head that discharges paint to a work, and an air injecting unit that injects annular shaping air towards an outer peripheral edge portion of the rotary atomizing head. The air injecting unit has first air injecting ports and second air injecting ports. First air of relatively high wind speed is injected from the first air injecting ports and second air of relatively low wind speed is injected from the second air injecting ports.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: August 5, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Masaki Shigekura, Kohei Ogata, Gaku Kawabe
  • Patent number: 8746597
    Abstract: An electrostatic spray system, comprising a hand held device having an inlet and an outlet. The hand held device includes a charging device for producing a high voltage charging field and a spray nozzle having an outlet, the outlet being disposed within the charging field. The system further includes an air movement system disposed within the hand held device, the air movement system configured to produce an airflow around the spray nozzle and through the high voltage charging field to create a directionally controllable electrostatic charged mist existing the hand held device at low velocities.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: June 10, 2014
    Assignee: E-Mist Innovations, Inc.
    Inventor: Michael L. Sides
  • Publication number: 20140099448
    Abstract: A device and method for electrostatic powder coating include: obtaining continuously a working fluid constituted by air deprived of undesirable substances; supplying the working fluid, between 0.5 bar and 10 bar, in a container containing an amount of coating powder; extracting from the container; a first flow made up of working fluid and powder; atomizing the first flow with working fluid at a pressure of between 0.5 bar and 10 bar; supplying working fluid at a pressure of between 0.5 bar and 10 bar to create a second transport flow made up of working fluid and atomized powder; charging the second flow electrostatically under pressure; and sending the second electrostatically charged flow of working fluid and atomized powder onto a substrate, at a temperature of between ?15° C. and +45° C., and a device and method for electrostatic painting including heating/cooling temperature adjustment of the painting mixture.
    Type: Application
    Filed: April 24, 2013
    Publication date: April 10, 2014
    Applicant: EUROSIDER S.A.S. di Milli Ottavio & C.
    Inventor: Ottavio MILLI
  • Patent number: 8602326
    Abstract: A rotary atomizer spray coating device, in certain embodiments, has a bell cup with a generally parabolic flow surface. This generally parabolic flow surface provides additional surface area for dehydration of coating fluids, thereby improving color matching as compared to traditional bell cups, for example, by affording capability for higher wet solids content. In addition, the coating fluid accelerates along the generally parabolic flow surface, resulting in the fluid leaving the bell cup at a greater velocity than in traditional bell cups. Furthermore, a splash plate disposed adjacent the bell cup, in certain embodiments, is designed such that fluid accelerates through an annular area between the splash plate and the generally parabolic flow surface.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: December 10, 2013
    Inventors: David M. Seitz, Roger T. Cedoz
  • Patent number: 8584973
    Abstract: Control method and apparatus for a manual spray gun may include a second manually actuated trigger disposed on the spray gun handle, with the second trigger being operational to select or change one or more coating operation parameters.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: November 19, 2013
    Assignee: Nordson Corporation
    Inventors: Brian Mather, Jeffrey A. Perkins
  • Patent number: 8540172
    Abstract: A sachet (1) having walls of flexible material is disclosed. The walls are joined so as to form an impermeable seal, thereby defining a cavity within the sachet (1). A conduit (2) passing through the seal and having inner and outer ends is disposed with the inner end within the cavity and the outer end outside the sachet (1) such that the cavity is in fluid communication, via the conduit, with the outside of the sachet. The cavity contains a volume of liquid (8) in use, and the conduit (2) is adapted to prevent the liquid (8) flowing from the cavity without the application of an additional stimulus, irrespective of the orientation of the sachet (1).
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: September 24, 2013
    Assignee: Atrium Innovation, Limited
    Inventors: David Waterman, Alastair Pirrie
  • Publication number: 20130214054
    Abstract: A process is provided for dispersing suspended particles in the air comprising: providing a generator apparatus for producing one or more propagating fluid vortex rings transporting ionized particles; directing the generator apparatus in a direction toward suspended particles in the air to be dispersed; generating a fluid vortex ring transporting ionized particles using the generator apparatus such that the fluid vortex ring travels to the suspended particles resulting in at least a portion of the ionized particles engaging and applying a charge to at least a portion of the suspended particles. The charged suspended particles are then attracted to one another or to nearby surfaces.
    Type: Application
    Filed: February 8, 2013
    Publication date: August 22, 2013
    Applicant: BATTELLE MEMORIAL INSTITUTE
    Inventor: BATTELLE MEMORIAL INSTITUTE
  • Patent number: 8511590
    Abstract: A high voltage is applied between an emitter electrode in an atomizing barrel and an opposed electrode supported to the atomizing barrel to electrostatically atomize a liquid supplied to the emitter electrode into a mist of charged minute particles. A silencer duct is attached to the front end of the atomizing barrel for reducing noises developed when generating the mist of the charged minute particles. Accordingly, the silencer duct can absorb the noises developed around the emitter electrode and the opposed electrode at immediately downstream thereof for effectively reducing the noises.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: August 20, 2013
    Assignee: Panasonic Corporation
    Inventors: Hideki Watanabe, Yasushi Arikawa, Akihide Sugawa, Takeshi Yano, Hisahito Ono, Kouichi Hirai, Tomonori Tanaka
  • Patent number: 8505839
    Abstract: An electrostatically atomizing device has a housing and an electrostatically atomizing unit accommodated within the housing. The electrostatically atomizing unit includes an atomizing barrel and an emitter electrode disposed within the atomizing barrel and is configured to atomize water supplied to the emitter electrode at a tip of the emitter electrode and generate mist of charged minute water particles. Formed within the housing is an air pressure chamber which surrounds the atomizing barrel. The atomizing barrel is formed in its peripheral wall with a plurality of air inlets which are arranged circumferentially around the atomizing barrel to introduce pressurized air from the air pressure chamber for carrying the mist on the pressurized air introduced into the atomizing barrel from the plural air inlets and discharging the mist outwardly of the housing.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: August 13, 2013
    Assignee: Panasonic Corporation
    Inventors: Takeshi Yano, Sumio Wada, Akihide Sugawa, Tatsuhiko Matsumoto, Shousuke Akisada, Kishiko Hirai
  • Patent number: 8471216
    Abstract: An electrostatic atomizing device comprises an electrostatic atomizing part (2) applying high-voltage to water supplied to an atomization electrode (1), thereby generating negatively-charged minute water particles, a positive ion generator (3) being configured to generate positive ions, and a controller (16) being configured to control operation of said electrostatic atomizing part (2) and said positive ion generator (3). Said controller (16) controls so as to cause said electrostatic atomizing part (2) to generate the negatively-charged minute water particles, after the positive ions are generated by said positive ion generator (3).
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: June 25, 2013
    Assignee: Panasonic Corporation
    Inventors: Hiroshi Suda, Yukiyasu Asano, Masaharu Machi, Jumpei Oe, Yasuhiro Komura
  • Publication number: 20130140385
    Abstract: A charge injected fluid assist liquid atomizer including a liquid delivery channel, a flow focusing member for generating a coaxial air stream to draw a slender jet from the liquid in the delivery channel toward an opposing orifice, an electrode in the channel submerged in the liquid, and a power source for applying a voltage between the electrode and channel to inject a charge into the liquid entrained in the focused flow of the jet and through the opposing orifice.
    Type: Application
    Filed: August 15, 2012
    Publication date: June 6, 2013
    Applicant: BUSEK CO., INC.
    Inventors: Nathaniel Robert Demmons, Gavin Gibson McDonald
  • Patent number: 8448883
    Abstract: An electrostatically atomizing device includes an emitter electrode, an opposed electrode disposed in an opposed relation to the emitter electrode, liquid supply means for supplying a liquid to the emitter electrode, and high voltage generating means for applying a high voltage across the emitter electrode and the opposed electrode. The liquid supplied onto the emitter electrode is electrostatically charged through application of the high voltage, as a result of which charged minute liquid particles are discharged from a discharge end of the emitter electrode. The device includes detecting means for detecting a discharge condition developed between the emitter electrode and the opposed electrode, and a controller for controlling the high voltage generating means to regulate its voltage output so as to maintain a predetermined discharge condition, based on detection results by the detecting means.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: May 28, 2013
    Assignee: Panasonic Corporation
    Inventors: Sumio Wada, Atsushi Isaka, Kenji Obata, Yutaka Uratani, Shousuke Akisada, Hiroshi Suda, Takayuki Nakada
  • Patent number: 8443754
    Abstract: An atomizer (2) with a rotary atomizing head (4) is mounted on the front side of a housing member (6) in which an air motor (3) is accommodated. A primary external electrode (8) is located around the outer peripheral side of the housing member (6) in such a way as to encircle the housing member (6). A secondary external electrode (10) is located on the front side of the housing member (6), in a position closer to the rotary atomizing head (4) than the primary external electrode (8). A first high voltage (V1) in the form of a direct-current voltage is supplied to the primary external electrode (8) from a first high voltage generator (11). On the other hand, a second high voltage (V2), in the form of a pulsating voltage (V2p) consisting of a series of intermittent pulses in a range lower than the first high voltage (V1), is supplied to the secondary external electrode (10) from a second high voltage generator (12).
    Type: Grant
    Filed: October 9, 2008
    Date of Patent: May 21, 2013
    Assignee: ABB K.K.
    Inventor: Yukio Yamada
  • Patent number: 8430058
    Abstract: Provided is an electrostatic coating apparatus capable of insulating an electric motor electrically from a member, to which an electrostatic high voltage is applied, and reducing the size and weight of the electrostatic coating apparatus. This electrostatic coating apparatus comprises a rotary atomizing head, to which high voltage is electrostatically applied, an electrostatically grounded AC servomotor, and a spindle and a fixed insulating member for insulating the AC servomotor electrically from the rotary atomizing head and a speed-increasing device to be set at the same potential as that of the former. The spindle and the fixed insulating member have insulation distance enlarging portions and of the mode, in which the creepage insulation distances from the speed-increasing device to the AC servomotor are enlarged.
    Type: Grant
    Filed: August 7, 2008
    Date of Patent: April 30, 2013
    Assignees: Toyota Jidosha Kabushiki Kaisha, Ransburg Industrial Finishing K.K., Harmonic Drive Systems Inc.
    Inventors: Masahito Sakakibara, Hisanori Nakamura, Youichi Hanai, Hideki Saito, Michio Mitsui, Toshio Hosoda, Kiyoto Kobayashi, Takeshi Ichikawa, Yoshinori Aida
  • Patent number: 8430346
    Abstract: A compressed air throttle apparatus has at least one throttle valve adjusted by an electric motor, and an electric circuit fitted with contacting elements to alternatively interrupt and close the electric circuit in relation to the throttle valve settings. This throttle apparatus preferably is applicable to a compressed air path of powder spraycoating equipment.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: April 30, 2013
    Inventor: Hanspeter Michael
  • Patent number: 8413914
    Abstract: A method and apparatus for electrostatically spraying a plural component fast set polymer is disclosed. The system comprises a spray gun and at least two hoses connected to the head of the spray gun. The system also includes a proportioner connected to an end of the at least two hoses and a high voltage generator electrically and pneumatically in communication with the spray gun. The electrostatic spray system will allow for a fast set polymer to be imparted with electrical charge after mixing of a first and second component in a spray head thereof prior to expulsion via a nozzle to a grounded target that is being coated with the electrostatic spray coating.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: April 9, 2013
    Assignee: Hanson Group, LLC
    Inventor: Melissa Pena
  • Patent number: 8317113
    Abstract: An electrostatic atomization device that electrostatically atomizes condensed water and emits atomized water. The electrostatic atomization device includes a discharge electrode. A water supplier unit includes a cooling unit coupled to the discharge electrode to cool the discharge electrode and a heat radiation unit coupled to the cooling unit to emit heat when the cooling unit performs cooling. The cooling unit cools air and produces condensed water on the discharge electrode. A controller includes electronic components mounted on a circuit board. A casing accommodates the discharge electrode, the water supplier unit, and the controller. First electronic components each of which temperature is increased by a predetermined value or greater are arranged in a heat radiation unit side region of the circuit board.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: November 27, 2012
    Assignee: Panasonic Corporation
    Inventors: Hidesato Uegaki, Osamu Imahori, Kenji Obata, Atsushi Isaka
  • Patent number: 8307780
    Abstract: Intended is to enable an electrostatic coating apparatus including a plurality of needle electrodes formed in an annular shape and having a blot preventing function, to prevent the generation of a spark discharge reliably, in case an arbitrary needle electrode approaches an earth element, and to keep the intensity of a generated electrostatic field properly. A coating gun comprises a blot preventing device including a ring-shaped electrode unit having a plurality of needle electrodes protruding radially at a substantially equal spacing radially outward from an annular base member, and a high-voltage generator for applying a high voltage to the electrode unit. The needle electrodes are connected in parallel with the high-voltage generator through individual resistors, block-by-block resistors and built-in resistors.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: November 13, 2012
    Assignees: Toyota Jidosha Kabushiki Kaisha, Ransburg Industrial Finishing K.K.
    Inventors: Isamu Yamasaki, Akira Kato, Michio Mitsui, Kimiyoshi Nagai
  • Patent number: 8309184
    Abstract: The invention relates to a method for priming a substrate by contacting the substrate with a primer fed from a primer source and depositing the primer on the substrate. Compared to other priming methods, the claimed priming gives better results because the deposition is carried out electrostatically.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: November 13, 2012
    Assignee: Stora Enso Oyj
    Inventors: Tapani Penttinen, Kimmo Nevalainen, Isto Heiskanen, Kaj Backfolk, Minna Peltola, Ali Harlin
  • Patent number: 8292202
    Abstract: An electrostatically atomizing device in this invention comprises an emitter electrode, cooling means, and a high voltage source. The emitter electrode has a rode and a discharge head which is formed at one axial end of the rod. The cooling means is coupled in a heat transfer relation to one axial end of the rod away from the discharge head in order to cool the emitter electrode for condensation of water thereon from within a surrounding air. The high voltage source is configured to apply a high voltage to the emitter electrode for electrostatically atomizing the water on the discharge head. The emitter electrode includes a flange which is provided at a juncture between the discharge head and the rod to extend radially outwardly of the discharge head and the rod over an entire circumference of the discharge head. The discharge head is tapered to have an outwardly bulged side contour.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: October 23, 2012
    Assignee: Panasonic Corporation
    Inventor: Kouichi Hirai
  • Patent number: 8282028
    Abstract: The liquid supplied to an emitter electrode located at a tip of an atomization nozzle receives the high-voltage and electrically charged. The mist of the charged minute water particles of nanometer sizes is generated from the emitter electrode. A pressure regulating means regulates a pressure applied to the liquid on the tip of the emitter electrode. Therefore, the mode of generating the mist of the charged minute water particles of nanometer sizes or the mode of generating the mist of the charged minute water particles of nanometer and micron size is selected.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: October 9, 2012
    Assignee: Panasonic Corporation
    Inventors: Takayuki Nakada, Hiroshi Suda, Masaharu Machi, Sumio Wada, Atsushi Isaka, Akihide Sugawa
  • Patent number: 8276539
    Abstract: An observation sample is prepared by immobilizing a nanomaterial on a substrate 10 by applying a voltage between a nanomaterial dispersion liquid 13, filled in an interior of an electrostatic spray nozzle 20, and the observation substrate 10 to electrostatically spray and dry the dispersion liquid 13 and electrostatically deposit the nanomaterial. With respect to the observation substrate 10, including a conductive grid portion 11 and a supporting film 12, a reference electrode 81 is disposed below the substrate 10 and a bias voltage of the same polarity as the electrostatic spraying voltage is applied to the grid portion 11 of the substrate 10 to adjust immobilization positions of the nanomaterial on the substrate 10. An observation sample, with which the nanomaterial is immobilized in a satisfactory state on the substrate, can thereby be prepared.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: October 2, 2012
    Assignee: Hamamatsu-Photonics K.K.
    Inventor: Tomonori Kawakami
  • Patent number: 8261689
    Abstract: The stain preventing cover is formed from a composite sheet 24 having a three layer structure as a raw material which is produced by laminating a first sheet material 21 having a low dielectric constant and having insulation performance, a second sheet material 22 having a dielectric constant higher than that of the first sheet material 21 or having semiconductivity and a third sheet material 23 having a dielectric constant lower than that of the second sheet material 22 and having insulation performance, in which an end of the second sheet material 22 is positioned together with an end of the first and third sheet materials 21 and 23 adjacent to a electrostatic high voltage part 10 of a coating machine and another end thereof is positioned distant from an earth part 11 of the coating machine to be electrically insulated.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: September 11, 2012
    Assignees: Toyota Jidosha Kabushiki Kaisha, Ransburg Industrial Finishing K.K.
    Inventors: Masahito Sakakibara, Hisanori Nakamura, Youichi Hanai, Hideki Saitou, Michio Mitsui, Masatoshi Iwase
  • Patent number: 8166911
    Abstract: A method and apparatus for electrostatic spray deposition (ESD) for fabricating a thin-layer yttria-stabilized zirconia (YSZ) electrolyte on a solid oxide fuel cell (SOFC) anode substrate constructed of nickel-YSZ cermet. By reducing the thickness of the electrolyte, and thereby reducing the cell internal IR drop, an intermediate temperature SOFC (ITSOFC) can operate at 600-800° C. A collar positioned at a distance from a discharge end of a spray nozzle enhances a spray pattern of a precursor including the electrolyte material and thus provides a very thin electrolyte layer.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: May 1, 2012
    Assignee: Illinois Institute of Technology
    Inventors: Jan Robert Selman, Hiroshi Nomura, Said Al-Hallaj
  • Patent number: 8109231
    Abstract: The invention pertains to a lining device that can be pulled through a pipe having an approximate diameter between 1 and 36 inches. The device sprays an electrically charged lining mixture 360° onto the inside pipe surface. The lining mixture is electro-statically charged to facilitate full encapsulation and adhesion to all pipe wall surfaces in a circumferentially uniform thickness. The lining device can be contained in a multipart housing having flexible rod-like components that hold the device in the center of the longitudinal axis of the pipe. The lining mixture is conveyed to the device through heated non expanding hose. The non expanding properties facilitate the delivery of the lining under pressure to the device. The device also incorporates a dwell cone having a knurled edge that atomizes the lining mixture as it is centrifugally thrown onto the pipe wall. The device may further incorporate nitrogen in mixing the lining material.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: February 7, 2012
    Inventors: Kent Weisenberg, Dudley Primeaux, II
  • Patent number: 8096264
    Abstract: A method and apparatus for coating articles with a coating material comprise forming a charged body of coating material, atomizing coating material from the charged body to form charged atomized coating material particles, and repelling the charged coating material particles from an apparatus which forms the charged body of coating material and atomizes the coating material from the charged body to form charged atomized coating material particles.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: January 17, 2012
    Assignee: Illinois Tool Works Inc.
    Inventor: David M. Seitz
  • Patent number: 7992514
    Abstract: The invention pertains to a lining device that can be pulled through a pipe having an approximate diameter between 1 and 36 inches. The device sprays an electrically charged lining mixture 360° onto the inside pipe surface. The lining mixture is electro-statically charged to facilitate full encapsulation and adhesion to all pipe wall surfaces in a circumferentially uniform thickness. The lining device can be contained in a multipart housing having flexible rod-like components that hold the device in the center of the longitudinal axis of the pipe. The lining mixture is conveyed to the device through heated non expanding hose. The non expanding properties facilitate the delivery of the lining under pressure to the device. The device also incorporates a dwell cone having a knurled edge that atomizes the lining mixture as it is centrifugally thrown onto the pipe wall. The device may further incorporate nitrogen in mixing the lining material.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: August 9, 2011
    Inventors: Kent Weisenberg, Dudley Primeaux, II
  • Patent number: 7988075
    Abstract: A coating dispensing device includes a trigger assembly for actuating the coating dispensing device to dispense coating material and a nozzle through which the coating material is dispensed. The coating dispensing device also includes a first port adapted to supply compressed gas to the coating dispensing device and a second port adapted to supply coating material to the coating dispensing device. The coating dispensing device further includes a generator having a shaft and a turbine wheel mounted on the shaft. Compressed gas coupled to the first port impinges upon the turbine wheel to spin the shaft, producing voltage. The dispensing device further includes an electrode adjacent the nozzle and coupled by circuitry to the generator to receive electricity therefrom to electrostatically charge the coating material. A circuit board assembly containing components of the circuitry is configured to partially surround and partially enclose the generator.
    Type: Grant
    Filed: March 10, 2008
    Date of Patent: August 2, 2011
    Assignee: Illinois Tool Works Inc.
    Inventor: Gene P. Altenburger
  • Patent number: 7966967
    Abstract: An electrostatic coating system (1) comprising a coating gun (2) for spraying a coating material toward an article (9) to be coated, and a robot arm (3) for moving the coating gun (2) with respect to the article (9) to be coated wherein a voltage is applied to the coating gun (2). A needle-like electrode (11) which is an electrostatic electrode having a pointed end applied with a voltage having the same polarity as that of the voltage applied to the coating gun (2), is attached to the coating gun (2) or the robot arm (3).
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: June 28, 2011
    Assignees: Toyota Jidosha Kabushiki Kaisha, Ransburg Industrial Finishing K.K.
    Inventors: Masahito Sakakibara, Shinichi Washizu, Michio Mitsui, Kimiyoshi Nagai
  • Patent number: 7942110
    Abstract: An electrostatic coating device (10) comprising a body defining to an interior chamber (13) communicating with the exterior by means of a first coating powder inlet conduit (14) and a second outlet conduit (15) for said powders, a plurality of electrodes (16) and one or more voltage generators (17) connected to said electrodes (16), wherein said electrodes (16) are positioned so as to generate an electrical field inside said second conduit (15).
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: May 17, 2011
    Assignee: Trasmetal S.p.A.
    Inventor: Francesco Saverio Chimienti
  • Patent number: 7918409
    Abstract: A device for dispensing coating material includes at least two electrodes for coupling to at least one high-magnitude potential supply so that the at least two electrodes are maintained substantially at two different high-magnitude potentials so that an electric field exists between the at least two electrodes. At least one of the at least two electrodes includes a passageway extending therethrough to provide a flow of compressed gas through the at least one of the at least two electrodes.
    Type: Grant
    Filed: April 9, 2008
    Date of Patent: April 5, 2011
    Assignee: Illinois Tool Works Inc.
    Inventors: John F. Schaupp, Austin A. Saylor
  • Patent number: 7861954
    Abstract: An electrostatic atomizer including a discharge electrode, a counter electrode, a cooling source, a high voltage power supply and a voltage detector. The cooling source cools the discharge electrode to form thereon dew as water. The power supply applies high voltage for discharge across the electrodes. The detector detects voltage between the electrodes. The power supply includes a control device and a voltage stabilizing device that are opposite to each other in temperature characteristic. The control device operates to pick up the voltage detected with the detector via the voltage stabilizing device, and to adjust the high voltage applied across the electrodes through feedback control so that the voltage corresponds to specified discharge voltage.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: January 4, 2011
    Assignee: Panasonic Electric Works Co., Ltd.
    Inventors: Shousuke Akisada, Toshihisa Hirai, Kishiko Hiraki, legal representative, Sumio Wada, Tatsuhiko Matsumoto
  • Patent number: 7841549
    Abstract: An electrostatic spraying device has a removable cartridge with a reservoir containing a volume of liquid compositions to be electrically sprayed. The device includes a nozzle for dispensing the liquid and an emitter electrode disposed adjacent to the nozzle for charging the liquid composition just being dispensed from the nozzle. A field electrode surrounds the reservoir in order to charge the liquid composition within the reservoir, thereby avoiding an occurrence of electric current which would deteriorate the composition remaining in the reservoir. The reservoir is at least partially made of deformable material such that the reservoir is capable of receiving pressure to deform and thus supply the liquid composition out of the reservoir. Thus, the reservoir can be designed into a simple and compact structure, thereby providing an increased liquid containing volume in relation to the bulk of the removable cartridge.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: November 30, 2010
    Assignees: Panasonic Electric Works Co., Ltd., The Procter & Gamble Company
    Inventors: Naoki Yamaguchi, Shunichi Nagasawa, David Edward Wilson
  • Patent number: 7823809
    Abstract: An electrostatic spraying device has a capability of confirming that the device is ready for making an electrostatic spraying of the liquid composition on a user's skin. The device includes a nozzle and a pump for dispensing the liquid composition out through the nozzle. An emitter electrode is disposed to electrostatically charge the liquid composition being dispensed for making the electrostatic spraying. The device is provided with a power switch and a selector for selection between a spraying mode and a dripping mode. In the dripping mode, the pump is alone actuated to dispense the liquid composition absent electrostatic charge. In the spraying mode, both of the pump and the emitter electrode are activated to make the electrostatic spraying. Thus, the user can be easy to drip the liquid composition by simply manipulating the selector prior to initiating the electrostatic spraying.
    Type: Grant
    Filed: November 26, 2004
    Date of Patent: November 2, 2010
    Assignees: Panasonic Electric Works Co., Ltd., The Procter & Gamble Company
    Inventors: Naoki Yamaguchi, Koji Asakawa, David Edward Wilson, Kazumi Toyama, Meei-Lih Lin
  • Patent number: 7823808
    Abstract: An electrostatic spraying device having a removable cartridge with a reservoir containing a volume of liquid compositions to be electrically sprayed on a user's skin. The device includes a nozzle for dispensing the liquid as well as an emitter electrode disposed adjacent to the nozzle for charging the liquid composition just being dispensed from the nozzle. A field electrode surrounds the reservoir in order to charge the liquid composition within the reservoir, thereby avoiding an occurrence of electric current which would otherwise flow in the liquid composition and would deteriorate the composition remaining in the reservoir. The reservoir is devoid of the field electrode, and therefor can be designed into a simple and compact structure without being restricted by the field electrode, assuring to have an enhanced liquid containing volume in relation to the bulk of the removable cartridge.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: November 2, 2010
    Assignees: Panasonic Electric Works Co., Ltd., The Procter & Gamble Company
    Inventors: Naoki Yamaguchi, Koji Asakawa, David Edward Wilson, Shunichi Nagasawa
  • Patent number: 7784718
    Abstract: An electrostatic paint sprayer 10 includes a body member 12 defining a paint passage 12a for flowing liquid paint supplied from a paint source 44, a nozzle assembly 16 adapted to be mounted to the end of the body member 12 so as to fluidly communicate with the paint passage 12a and a plurality of electrode pins 22 disposed about the axis and electrically connected to a electric power source 40. The nozzle assembly includes a paint orifice for discharging the supplied paint along an axis, a plurality of atomizing air orifices for discharging atomizing air to atomize the paint dispensed through the paint orifice and a plurality of shaping orifices for discharging shaping air to form the paint dispensed through the paint orifice into a predetermined pattern.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: August 31, 2010
    Assignee: Ransburg Industrial Finishing K.K.
    Inventor: Masahito Ohno
  • Patent number: 7762481
    Abstract: An electrostatic rotary atomizer apparatus includes a housing encasing a turbine assembly, a shaping air assembly disposed radially outwardly from the turbine assembly for fluid communication with a shaping air supply, and a charge ring mounted to the housing and adapted to be connected to an electrical power supply. The charge ring has a plurality of electrodes within the housing. Ions emitted by the charge ring are directed through shaping air passages to intersect paint droplets leaving a rotating bell cup.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: July 27, 2010
    Assignee: Fanuc Robotics America, Inc.
    Inventor: Scott J. Clifford
  • Patent number: 7748343
    Abstract: An electrohydrodynamic spray apparatus includes a liquid inlet and a spray nozzle in fluid communication with the liquid inlet, where the spray nozzle has an opening downstream of the liquid inlet. An inner electrode is situated at least partially inside the spray nozzle. An outer electrode is situated external to the spray nozzle and within about 100 mm of the opening of the nozzle. The electrohydrodynamic spray apparatus can be combined with a substrate to form an electrohydrodynamic spray system. The electrohydrodynamic spray apparatus or system can be used to form nanostructures such as nanodrops, nanoparticles and thin films.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: July 6, 2010
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Kyekyoon Kim, Ravindra Pratap Singh
  • Patent number: 7748651
    Abstract: A spray gun suitable for electrostatic coating, using a coating material whose electric resistance is relatively low. A coating material nozzle is attached to the front middle region of a barrel having a forwardly projecting cylindrical section on the front outer peripheral edge, and an air cap which covers their front surfaces is installed. A pattern air flow channel is formed between the air cap, coating material nozzle outer peripheral surface and the cylindrical section inner peripheral surface, and an annular electrode is attached to the inside of the flow channel. The air cap is centrally provided with an atomization air spout hole, and a coating material delivery port at the front end of the coating material nozzle is inserted therein. A pin electrode is projected forward through the coating material delivery port. Two pairs of projections project forward from two sets of opposed locations for the air cap, each with a pattern air spout hole.
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: July 6, 2010
    Assignee: Asahi Sunac Corporation
    Inventors: Masahiko Amari, Masami Murata, Takuho Sogawa
  • Patent number: 7712687
    Abstract: An electrostatic spray device that maintains a consistent charge-to-mass ratio in order to maintain a consistent target spray quality is disclosed. During steady state conditions, the high voltage power supply adjusts the output voltage level in response to changing environmental and/or operating conditions. During transient conditions such as start-up, shut-down and changing flow rate conditions, the high voltage power supply ensures that the charge-to-mass ratio is maintained. During, start-up, for example, the high voltage power supply charges the high voltage electrode to a predetermined voltage level before the product is delivered to the charging location. During shut-down, the product delivery is stopped before the high voltage power supply shuts off power to the high voltage electrode, and during changes in product flow rate, the voltage level of the high voltage electrode is adjusted to maintain a consistent charge-to-mass ratio.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: May 11, 2010
    Assignee: The Procter & Gamble Company
    Inventors: David Edward Wilson, Bryan Michael Kadlubowski, Jeffrey Keith Leppla, Wataru Hirose, Yoshihiro Wakiyama, Takeshi Aoyama, Takeshi Mori, Toru Sumiyoshi
  • Patent number: 7676952
    Abstract: A hair dryer having a static atomizing device, which has the capability of generating an electrostatically charged microparticle mist of 3 nm to 100 nm. The static atomizing device has a pair of an atomizing electrode and a counter electrode, a tank for storing a liquid such as water; a liquid transport member for transport water from the tank to the atomizing electrode according to capillary phenomenon, and a voltage applying unit. When a high voltage is applied between the atomizing electrode and the counter electrode, while water being supplied to the atomizing electrode through the liquid transport member, the electrostatically charged microparticle mist is generated.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: March 16, 2010
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Takashi Nakagawa, Yasunori Matsui, Naofumi Kodama, Tomohiro Yamaguchi, Kiyoshi Takashima, Toshihisa Hirai, Kishiko Hirai, legal representative, Kenji Kamada, Kengo Ito, Kazumi Okawa, Atsushi Isaka, Shinya Murase
  • Patent number: 7674429
    Abstract: Glycolic disinfectant compositions and related methods and apparatus for electrostatic dispensation.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: March 9, 2010
    Assignee: JohnsonDiversey, Inc.
    Inventor: Claudio L. K. Lins
  • Patent number: 7661610
    Abstract: An atomizer including an air motor and a rotary atomizing head, mounted in a front side of a housing member, while a high voltage generator applying a high voltage to paint through the air motor is mounted in a rear side of the housing member. A cover member is fitted on the housing member to cover an outer surface of the housing member. Opposite axial ends of the cover member are fitted on and attached to opposite axial ends of the housing member so as to leave an annular gap space between the cover member and the housing member. The annular gap space keeps almost entire radially confront areas of the cover member and the housing member, preventing high voltage electrostatic charges on the outer surfaces of the cover member from leaking through the housing member.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: February 16, 2010
    Assignee: ABB K.K.
    Inventor: Yukio Yamada
  • Patent number: 7617998
    Abstract: A powder spraycoating gun and its gun housing. The spraygun housing is a plastic, integral body constituting a stock fitted with a powder discharge tube and a grip fitted with a powder intake tube.
    Type: Grant
    Filed: April 17, 2006
    Date of Patent: November 17, 2009
    Assignee: ITW Gema GmbH
    Inventors: Felix Mauchle, Hanspeter Michael, Marco Sanwald
  • Patent number: 7617997
    Abstract: Total supplied current (I2) and high voltage (Vm) supplied to a rotary atomizer head (5) are detected by a total current sensor (115) and a high voltage sensor (116). Total leak current (I2) in paint paths, thinner paths and air paths inside an electrostatic atomizer (2) is detected via a metal back plate (40) of the electrostatic atomizer (2). When the total leak current value (I2) exceeds a threshold value (Ia), the level Vm of the high voltage applied to the rotary atomizer head (5) is lowered stepwise.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: November 17, 2009
    Assignee: Ransburg Industrial Finishing K.K.
    Inventor: Kimiyoshi Nagai
  • Patent number: 7614572
    Abstract: An electrostatic spraying device has a removable cartridge with a reservoir containing a volume of liquid compositions to be electrically sprayed. The reservoir is deformable according to inner pressure and configured to provide a removable cartridge. The device includes a dispensing unit for spraying the liquid composition. The dispensing unit includes a nozzle for dispensing the liquid composition and an emitter electrode which charges the liquid composition for electrostatically spraying the liquid composition out through the nozzle. A suction pump is integrated into the dispensing unit in an immediately upstream relation with the reservoir for feeding the liquid composition from the reservoir to the nozzle. Thus, the suction pump can be concentrated together with the emitter electrode and the nozzle into the dispensing unit on one end of the reservoir, enabling to realize the cartridge of a compact design.
    Type: Grant
    Filed: November 26, 2004
    Date of Patent: November 10, 2009
    Assignees: Panasonic Electric Works Co., Ltd., The Procter & Gamble Company
    Inventors: Naoki Yamaguchi, Shunichi Nagasawa, David Edward Wilson, Masayuki Yamasaki
  • Publication number: 20090266516
    Abstract: Electrospray evaporative cooling (ESC). Means for effectuating thermal management using electrospray cooling are presented herein. An ESC may be implemented having one or more nozzles situated to spray droplets of a fluid towards a target. Because the fluid may be electrolytic, an electric field may be established between the one or more nozzles and the target can be operative to govern the direction, rate, etc. of the electrospraying between the one or more nozzles and the target. An additional shielding/field enhancement electrode may also be implemented between the one or more nozzles and the target. A droplet movement mechanism may be employed to transport droplets received at a first location of the target so that evaporation thereof may occur relatively more at a second location of the target. An ESC device may be implemented to effectuate thermal management of any of a variety of types of electronic devices.
    Type: Application
    Filed: April 26, 2009
    Publication date: October 29, 2009
    Applicant: UNIVERSITY OF WASHINGTON
    Inventors: Nels E. Jewell-Larsen, Chih-Peng Hsu, Alexander V. Mamishev, Igor A. Krichtafovitch, Hsiu-Che Wang