Abstract: A confluent system includes an internal venturi; an open hopper in gaseous communication with the internal venturi, the open hopper being configured to receive solid large particles; and a fluid bed in gaseous communication with the internal venturi. The method includes a set of coatings and composite structures formed from a portion of the solid large particles applied to workpieces by gas-supported transfer then fused together by heating that comprise large-scale variations in structure provided by the inclusion of particles that are larger in at least one dimension than conventional powder coating particles.

Abstract: The invention relates to a precipitation simulator consisting of a collecting area, onto which the precipitants can fall, and a tube, which extends from the lowest point of the collecting area to a transporting device and from there upwards as far as the nozzle, wherein the precipitant can be transported to the upper end of the tube by the transporting device and emerges there, wherein the nozzle is a hollow-body-like rail with outlet openings and wherein either there is an ionization system, consisting of at least one electrode that protrudes into the stream of air/precipitant mixture and/or supplied air and is connected to an alternating voltage of at least 1 kV, and/or the precipitants are provided at least on their surface with an electrically conducting layer.

Abstract: An intermediate reserve tank for temporarily storing a conductive coating medium is provided in a coating medium supply passage for supplying the conductive coating medium from a color switch valve mechanism to a spray gun. A block valve mechanism for electrically insulating the color switch valve mechanism and the intermediate reserve tank is provided. A coating medium extrusion portion for supplying water or a cleaning solution is connected to a transmission passage between the intermediate reserve tank and the spray gun via a switch valve. When an amount of the coating medium necessary until an end of a coating operation becomes a predetermined amount, the conductive coating medium is extruded by the water or the cleaning solution by switching the switch valve.

Abstract: An intermediate storage vessel has a cylinder container, a piston provided in the cylinder container so as to be slidable in a reciprocating manner, and an inpour hole portion is provided above the discharge hole portion. An insulation cover is provided so as to cover the intermediate storage vessel and an insulation mechanism, and the cover is removable from the insulation mechanism side.

Abstract: Powder overspray that is extracted from a spray booth is recovered back to a powder supply that is used to supply powder to the spray guns inside the spray booth. The powder overspray extracted from the booth is separated from the high flow air stream by a separator such as a cyclone separator. The powder falls into a transfer pan and a vacuum is used to convey the powder from the transfer pan to a vacuum receiver. The powder is then discharged to the feed hopper in the feed center. The use of a vacuum to convey powder from the cyclone to the feed center in effect permits substantially all of the powder overspray to be recovered from the spray booth directly to the feed hopper with minimal dwell or residence time within the cyclone or vacuum receiver subsystems during a spraying operation. The receiver can be rotated for easy cleaning, and the vacuum line cleaned by one or more cleaning elements drawn through the vacuum line.

Abstract: Methods, processes, and apparatuses for the large scale synthesis of carbon nanostructures are provided. Metal catalysts having small diameter and narrow distribution of particle sizes are prepared and continuously injected as aerosols into a reactor. The metal catalysts are supported on supports that are substantially free of carbon. The metal catalyst, in the form of a powder, is placed in an injector that is shaken vertically. The powder is aerosolized, and the powder entrailed in the gas is passed through a conduit that is bifurcated where one portion delivers the powder to the reactor while the other portion connects back to the ejector that is located in between the gas source and the top part of the container.

Abstract: The atomizer (Z) of an electrostatic coating unit contains a dosing pump (DP) connected between the atomization device (4) and a scrapeable coiled pipe (10) which serves as a space-saving paint supply vessel and which is also situated in the atomizer. The scraper (12) is activated by compressed air on one side in order to force the paint material fed to its other side to the dosing pump (DP), which conveys it to the atomization device (4).

Abstract: A powder atomizer comprises a rotatable powder conveying brush operably associated with a powder supply. A powder receptacle has an inlet and an outlet. The powder conveying brush extends along the inlet and supplies powder to the receptacle. A rotatable powder metering brush is operatively associated with the outlet and withdraws powder from the receptacle. A rotatable powder atomizing brush is operatively associated with and receives powder from the metering brush and discharges the powder. A shoe is operatively associated with the atomizing brush, and is pivotable about a pivot axis between a first and a second position.

Abstract: An apparatus and method for manufacturing ultra-fine particles using an electrospray device is disclosed. One or more capillary provided at its tip with a nozzle is positioned within a guide duct and precursors such as metal organic materials and metal halogen compounds, or nonvolatile substances or volatile substances are supplied to the capillary. Voltages are applied to the capillary and the guide duct, respectively, so that a voltage difference is generated therebetween and the highly charged liquid droplets from the capillary are sprayed. The sprayed liquid droplets are carried along the guide duct together with carrier gas injected into the guide duct. When heat energy is applied to the liquid droplets, chemical reactions of the liquid droplets occur. A collecting plate positioned in front of the guide duct collects ultra-fine particles formed by the chemical reactions.

Abstract: The paint-spraying apparatus exhibits a supply line 7 for coating material, extending from the color changer to the atomizer. Cut-off valves 26, 27 installed in the supply line delimit an insulating section 25 of said supply line, which insulating section is associated with means 28 to 32 for emptying and flushing said insulating section 25. A voltage divider 16 is connected in parallel to said insulating section 25. When colors are changed, the residual coating material present in said voltage divider 16 can be moved into the empty insulating section 25, after which it is forced by means of slugs back through the entire supply line 7 to the color changer 1, and is thus reclaimed.

Abstract: An arbitrary 3D or 2D shape is formed by construction from colorant in a volume—which may be cylindrical, annular, or of arbitrary cross-section, depending on form of the invention. In some forms, a 2D-extended array of colorant-ejecting nozzles is disposed in a particular linear direction relative to the volume, and a programmed processor controls ejection of colorant from the nozzles to pass through the volume. A 2D colorant-retrieving frame (ideally back-to-back with the array) is disposed in a second linear direction opposite to the one particular direction, from the array, to recover the colorant and thus erase the image—which can then be refreshed, with animation changes if desired, by the writing array. Colorant is moved through the volume by gravity, or by continuous ejection of material from the array and suction at the frame to form a suspending fluid flow—the array moving at equal but opposite velocity so that the image is stationary.

Abstract: A method and a process are disclosed for optimizing an electrostatically dosed dry powder inhaler (EDPI) for utilization of a prepared pre-metered electro-dose consisting of a electro-powder. An arrangement is set-up for measuring parameters affecting a systemic delivery or local lung delivery of a pre-metered electro-dose from and DPI including analysis of dose de-agglomeration, particle size distribution as well as dose-to-dose variation together with pressures times and flows. A dry powder inhaler, DPI, is adjusted for a systemic or a local lung setting with respect to activation pressure and closing pressure having a DPI with a 20 to 60 liters/minute inhalation air flow for systemic delivery setting and 20 to 80 liters/minute for a local lung setting. Furthermore the de-agglomeration power is adjusted between 0.1 and 6 watts to be used in the DPI by optimizing the pressure drop and inhalation flow rate by changes to the mouthpiece and/or the device member and their relation to each other.

Abstract: A paint spray system for directing paint to a part has a paint atomizer head having a bell housing and a bell-atomizer. An electrically conductive tape is applied to a surface of the paint atomizer. The tape may be applied to the bell housing or the front surface or side surfaces of the support housing. Tape is electrically connected to a power source to generate an electrical field and thereby an electrical force on charged paint particles produced at bell-atomizer. The electrical field repels the paint particles from the paint atomizer head to reduce the maintenance of the paint spray system.

Abstract: In an electrostatic powder spray gun, a cylindrical air curtain is formed toward the front side of a gun main body by supplying compressed air to an air chamber formed between the outer peripheral surface of a cover member and an outer cylinder so as to eject the air from an air blowing opening. Owing to the air curtain, powder particles move toward an object to be coated without the risk of scattering to an ion trap electrode.

Abstract: An apparatus and method for the aerosolization of powders is disclosed. The invention includes a chamber in which a cloud of aerosolized powder is formed, the cloud having a relatively even distribution of powder particles. A Bernoulli tube may be used to extract powder from the powder cloud when the powder cloud reaches its equilibrium height. Adjustment of the air flow rate into the Bernoulli tube may be used to control the flow rate of powder out of the disclosed device.

Abstract: An electrostatic coating machine comprising at least two paint tanks (13A, 13B) for pushing out a paint by a pressure of a hydraulic fluid which one is attached to a rotary base (14) while being electrically insulated from each other, and can be positioned to a coating position opposed to the machine body (3) by the rotation of the rotary base (14) such that while one paint tank is at the coating position, the other paint tank is engaged with a paint charging attachment (22) that is disposed being electrically insulated from the machine body (3) and has a paint supply port (Ps) for supplying a cleaning fluid and a paint of a next color and a drain recovery port (Dr) for recovering drains. Cleaning/paint charging time can be shortened to improve operation efficiency and insulation countermeasure for the paint supply system can be saved.

Abstract: The present invention relates to a spraying apparatus and a method of using the same. The spraying apparatus can be used in the spraying of herbicides or insecticides from an aircraft or from the ground. The apparatus provides a separation chamber to remove the small drop component of the spray so that the component leaving the apparatus is essentially free of small drops. Small drops have slight fallspeeds and are subject to wind drift, causing off-target deposits and potential biological impact outside the treatment areas.

Abstract: The present invention relates to a spraying apparatus and a method of using the same. The spraying apparatus can be used in the spraying of herbicides or insecticides from an aircraft or from the ground. The apparatus provides separation means to remove the small drop component of the spray so that the component leaving the apparatus is essentially free of small drops. Small drops have slight fallspeeds and are subject to wind drift, causing off-target deposits and potential biological impact outside the treatment areas.

Abstract: A hand held device for coating a fastener with a coating and which includes a first body with a free end and which defines a first chamber that is placeable over the fastener, apparatus for supplying the coating under a pressure to the first chamber for coating the fastener with the coating, a second body with a free end and which is disposed external to the first body so as to form a second chamber therebetween, the second body is rigidly attached to the first body and the free end of the second body is displaced a distance below the free end of the first body so as to form a passageway therebetween, and apparatus for reducing pressure in the second chamber, the reducing apparatus draws the coating from the first chamber where the fastener is initially coated with the coating from the supply apparatus through the passageway and into the second chamber which causes the second chamber to fill with the coating so that when the pressure of the supply apparatus is eliminated the coating is drawn back from the sec

Abstract: There is described a printing head useful in an ink-jet printer to print on a recording medium, comprising jet forming means for forming spaced drops of ink, charging means adjacent the forming means for inducing an electric charge in selected some of the drops, the charging means being mounted on an electrically non-conductive plate, and drop-catcher means for catching the charged drops. The drop-catcher means is integral with the plate mounting the charging means, and is disposed downstream from the charging means.

Abstract: An electrode for use in a fluid-jet marking apparatus includes a flexible and tensionable electrode member mounted in confronting, substantially parallel alignment to a linear array of fluid droplet streams. The mounting of the flexible and tensionable electrode member is accomplished by a pair of mounting arms in spaced-apart relationship, one of the arms being pivotal while the other arm is immovable. The one pivotal arm is thus displaced relative to the other immovable arm so as to responsively tension the electrode member therebetween.In order to increase the vibrational frequency of the flexible and tensionable electrode member and/or to substantially decrease the vibrational amplitude thereof, at least one intermediate arm having a terminal end in operative contact with the electrode member is provided.

Abstract: A rotary type electrostatic spray painting device comprising a rotary shaft supported by static pressure air bearings in a non-contact state. A drive turbine wheel and a braking turbine wheel are fixed to the rotary shaft. A paint injection nozzle is provided for feeding paint onto a cup shaped inner wall of the spray head. The paint injection nozzle is connected to a paint suction device. When changing the color of the paint, pressurized air is injected towards the braking turbine wheel and, at the same time, paint remaining in the paint injection nozzle is sucked away by the paint suction device.

Abstract: A drop-catching structure for use in a liquid jet printing apparatus of the type which generates a linear array of closely spaced (i.e., high density) droplet streams from an orifice plate. The droplets are deflected from a normal droplet path towards a catching structure, the preferred embodiment of which includes an upper first planar surface substantially parallel to the droplet path, an intermediate planar surface disposed below the first planar surface and inclined downwardly and outwardly relative to the first planar surface, and a lower planar surface disposed below the intermediate surface which terminates in an upwardly directed channel defined with the ingesting blade.

Abstract: Fluid is applied in droplet form to a substrate by feeding the fluid to a nozzle so that the fluid issues from the nozzle as a single substantially coherent jet following a single jet flight path, causing the jet to break up into a series of substantially uniformly sized droplets, and applying a sufficiently large electrical charge to the fluid by means of a charge electrode so as to form mutually repellant droplets having flight paths which diverge from one another. The single jet path is directed into a catching device by which the fluid is caught and prevented from being applied to the substrate. The jet of fluid is broken up into a stream of substantially uniformly spaced droplets and the divergent stream of droplets is directed away from the catching device and allowed to reach the substrate so as to deposit fluid on the substrate.

Abstract: A spraying apparatus to deliver inductively charged spray, for example to crops. The apparatus includes a spray head and electrodes to apply a potential difference in the region of the spray head to charge spray. An aspirating means is arranged to remove liquid deposited on an electrode to reduce interference with the charging process. When the spray liquid is to be at high potential in the apparatus a long high resistivity supply tube may be provided. The aspirating means may be operated by spray liquid bled from a pressurized supply spray liquid.

Abstract: An electrostatic coating machine comprises a coating machine main body having a rotary atomizing head and a cleaning shroud, a plurality of color change valve mechanisms for feeding paints and cleaning fluids to the rotary atomizing head, a first change-over valve provided at a position close to the rotary atomizing head, paint feed passages respectively connected to each of the color change valve mechanisms and selectively communicating with the rotary atomizing head by way of the first change-over valve, a drain passage for recovering the drainage from the cleaning shroud and the first change-over valve, a discharging section for forcively discharging the drainage from the drain passage, and a second change-over valve provided in the midway of the drain passage communicating from the cleaning shroud to the discharging section.

Abstract: A method of generating a vapor stream is disclosed which comprises the steps of providing a jet of electrostatically chargeable liquid particles and electrostatically controlling the jet so as to meter some of the liquid particles into a vaporizer for a period of time sufficient to become vaporized.

Abstract: A powder system for electrostatically applying a powder coating to a can body side seam area. The system incorporates a catcher which is positioned and is of a configuration to catch and return substantially all of the powder overspray and stray powder particles. A constant vacuum is maintained in the catcher by way of a vacuum flow transducer.