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.

Abstract: A powder supply system for a powder-coating installation, especially a parts painting installation using electrostatic powder, according to the invention, comprises a tank designed to contain the powder, means for feeding powder into the tank, means for injecting compressed air into the bottom of the tank in order to fluidize the powder, and an exit pipe in which the powder is entrained by the air from the tank, this pipe being connected to at least one powder using device situated at a distance, in particular a spray gun. The system also includes means for reducing the pressure in the tank below that of the feed means in order to fill the tank with powder.

Abstract: A paint feeding device is equipped with a paint feeding passage, which has a discharge port at one end, to which a rinsing liquid feeding device for feeding a rinsing liquid to the inside, and an air feeding device for feeding air to the inside, are connected to the end portion on the opposite side of the discharge port. A plurality of paint feeding devices for feeding the paint to the inside are connected between the discharge port and the opposite side end portion. The rinsing liquid feeding device and the air feeding device are connected to the paint feeding passage through a rinsing liquid feeding passage disposed separately of the paint feeding passage. The rinsing liquid feeding passage has a passage content volume set according to the feeding capacity of the rinsing liquid per a unit time by the rinsing liquid feeding device.

Abstract: The invention relates to an operating method for an atomiser (1) for the coating of structural components, particularly of vehicle body parts, with the following steps: Application of a spray jet of a coating agent through the atomiser (1); discharge of a first guide air flow (11) for the formation of a spray jet; determination of at least one application parameter (?, ?, T, BC/CC, Qvarnish, n, U,) which reproduces a property (?, ?, T, BC/CC) of the applied coating agent or an operating variable (Qvarnish, n, U) of the atomiser (1) as well as influencing of the first guide air flow (11) as a factor of the application parameter (?, ?, T, BC/CC, Qvarnish, n, U,). Within the framework of the invention, there is the alternative option that fluctuations of the application parameters and, based thereon, variations of the spray jet width are taken into account by means of an adaptation of the path spacing (d) between the adjacent coating agent paths for the purpose of keeping the path overlapping constant.

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.

Abstract: In an immobilization process of electrostatically spraying a nanomaterial dispersion liquid 13 from an electrostatic spray nozzle 20 and immobilizing a nanomaterial on a sample 10, a voltage is applied between the dispersion liquid 13 and the sample 10 to electrostatically spray the dispersion liquid 13 onto the sample 10 from a spray outlet 22 of the nozzle 20 under a condition where one or zero particles of the nanomaterial 18 are contained in each individual droplet 16 sprayed and electrostatically deposit the nanomaterial 18 onto a surface of the sample 10 after drying a solvent 17, contained in each individual droplet 16, in an atmosphere to immobilize the nanomaterial 18 on the sample 10. Aggregation of the nanomaterial in each droplet is thereby prevented and the nanomaterial can be immobilized favorably on the sample.

Abstract: A robotic painting system includes a device for generating a vacuum and a dump line disposed upstream from a connection between an isolation line and a canister, wherein the device for generating a vacuum and the dump line are employed for filling and cleaning the robotic painting system.

Abstract: A current sensor for detecting a full return current is connected to a high voltage generator. A leakage current detector including current sensors for detecting a leakage current is provided at the surface of the cover of a coating machine, air passages and a paint passage. Based on current detection values obtained by the current sensors, a high voltage control unit controls a power supply voltage control unit and a high voltage to be output from the high voltage generator can be raised or dropped. By employing the current detection values, the high voltage control unit can identify and provide notification of a location where the leakage current is increased and the insulation is deteriorated, and can request an operator to perform maintenance for the pertinent location. Further, upon occurrence of the insulation being deteriorated, the high voltage control unit can stop the high voltage supply.

Abstract: The powder coating apparatus is provided with a coating booth into which a ground-connected object to be coated can be delivered and a plurality of coating tools respectively provided on the coating booth and adapted to discharge electrically charged powder coating materials onto the object to be coated. At least two of the coating tools are disposed on walls of the coating booth such that discharge openings thereof for discharging the powder coating materials are opposed to each other. The respective opposed discharge openings simultaneously discharge the powder coating materials onto the object to be coated. The powder coating materials, which are discharged from one of the at least two coating tools and are diffusing in the interior portion of the coating booth, are moved up to the object to be coated by a delivering air discharged together with the powder coating materials from the other of the two coating tools.

Abstract: The invention relates to an oil type lubricant, which is applied to a die to be used in high-pressure die casting, gravity die casting, low-pressure die casting and forging and can prevent soldering, particularly at high temperature parts and under a heavy load, to a spray method of applying the oil type lubricant and a spray apparatus for applying the oil type lubricant. The powder-containing oil type lubricant for die contains 60 to 99% by mass of an oil type lubricant consisting of oil, 0.3 to 30% by mass of a solubilizing agent, 0.3 to 15% by mass of an inorganic powder and 7.5% by mass or less of water, the lubricant being electrostatically applied to a die. The electrostatic spray method includes applying the powder-containing oil type lubricant to a die by electrostatic spraying. The electrostatic spray apparatus includes a static electricity imparting device that imparts static electricity to the powder-containing oil type lubricant and an electrostatic spray gun installed on a multi-axle robot.

Abstract: Methods and systems for coating at least a portion of a medical device (e.g., a stent structure) include providing a plurality of coating particles (e.g., monodisperse coating particles) in a defined volume. For example, the particles may be provided using one or more nozzle structures, wherein each nozzle structure includes at least one opening terminating at a dispensing end. The plurality of coating particles may be provided in the defined volume by dispensing a plurality of microdroplets having an electrical charge associated therewith from the dispensing ends of the one or more nozzle structures through use of a nonuniform electrical field between the dispensing ends and the medical device. Electrical charge is concentrated on the particle as the microdroplet evaporates. With a plurality of coating particles provided in the defined volume, such particles can be moved towards at least one surface of the medical device to form a coating thereon (e.g.

Abstract: A system that incorporates teachings of the present disclosure may include, for example, an apparatus having a plurality of applicators, each applicator with an ingress opening to receive a liquid, and an egress opening to release the liquid, and a conductor positioned in a conduit of each of the plurality of applicators, the conductor and the conduit having dimensions to cause a surface tension of the liquid to prevent a constant flow of the liquid from the egress opening. Each conductor of the plurality of applicators can be coupled to one of one or more power sources operable to apply a charge to the liquid to overcome the surface tension and form at the egress opening of each applicator a plurality of jet sprays of the liquid applicable on a substrate to form a thin film. Additional embodiments are disclosed.

Abstract: An electrostatic coating method in which a coating material cartridge is used. When a coating material feeding path (68, 88) is cleaned by a liquid fed from a coating material feeding unit (20), the liquid is fed from the coating material feeding unit to a storage part (13) and stored. The liquid in the storage part is then fed to a fluid chamber (83) inside a coating material cartridge (19) via a fluid circuit (10A). The liquid in the fluid chamber pushes out the electrically conductive coating material inside a coating material chamber (84) via a free piston (82), and the electrically conductive coating material is fed to a coating gun (14).

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.

Abstract: An electrode holder for a powder spraying device includes a powder channel and a bridge arranged into the powder channel for holding an electrode. In addition a wedge is provided, which can be fixed on the bridge, on the upstream side of the bridge.

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).

Abstract: An electrostatic coating apparatus for coating an object includes a base module, a nozzle, an electric field generator and a power supply. The object is mounted on the base module. The nozzle receives gas and liquid and ejects the gas and the liquid. The electric field generator mounted on the base module generates an electric field. The power supply has a first pole electrically connected to a first pole of the electric field generator, and a second pole electrically connected to the object and a second pole of the electric field generator such that the electric field is generated in the electric field generator and the atomized liquid passing through the electric field generator is charged and absorbed onto the object to form a coating layer on the object.

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).

Abstract: A lubricant dispensing system is provided. The dispensing system includes a lubricant supply, a lubricant dispensing nozzle and a control panel. The dispensing nozzle includes a nozzle body with a fluid passageway therein which is in fluid communication with the lubricant supply, an electrode assembly for electrostatically charging lubricant in the fluid passageway and at least one discharge orifice through which electrostatically charged lubricant can be discharged. The discharge orifice is defined by at least one spray needle having a first end in fluid communication with the fluid passageway and a second end that extends outward of the nozzle body. The control panel directs the flow of lubricant from the lubricant supply to the lubricant dispensing nozzle and controls the electric power supplied to the electrode assembly.

Abstract: The invention concerns a coating plant for the coating of construction units with a coating medium, in particular a paint system for the lacquer finish of motor vehicle body parts, with a dosing pump, the coating medium supplied with a certain delivery (Fm) proportioned, and a pressure control valve arranged upstream before the dosing pump to adjust a coating medium pressure (p v) at the entrance of the dosing pump, as well as a control unit to adjust the pressure control valve a controlled variable of the pressure difference (?p) through the dosing pump independently of the delivery of the dosing pump and the changing viscosity of the lacquers to an essentially constant desired value (?pTARGET).

Abstract: A current sensor for detecting a full return current is connected to a high voltage generator. A leakage current detector including current sensors for detecting a leakage current is provided at the surface of the cover of a coating machine, air passages and a paint passage. Based on current detection values obtained by the current sensors, a high voltage control unit controls a power supply voltage control unit and a high voltage to be output from the high voltage generator can be raised or dropped. By employing the current detection values, the high voltage control unit can identify and provide notification of a location where the leakage current is increased and the insulation is deteriorated, and can request an operator to perform maintenance for the pertinent location. Further, upon occurrence of the insulation being deteriorated, the high voltage control unit can stop the high voltage supply.

Abstract: It is an object to provide a method for forming a thin film having a uniform thickness so as to follow asperities of a surface of a wafer to be processed and to provide a film-forming device used for the method. The film-forming device includes a treatment chamber for receiving a wafer and isolating the wafer from the air; a solvent-gas-supplying portion for supplying a solvent gas into the treatment chamber; a chuck for rotatably holding the wafer so that the downward-facing surface of the substrate is the surface on which a thin film is formed; a coating-solution-supplying portion for supplying a coating solution as a mist of charged particles toward the surface of the wafer; and a charging portion for charging the wafer with an electrical potential opposite to the charge of the particles.

Abstract: The piston dispenser for the measured supplying of material to the atomizer of a painting robot is arranged in the hand joint of the robot. Various feasible embodiments of the dispensing cylinder of this piston dispenser are described.

Abstract: The invention is an immobilization apparatus comprising: a container (1) having a nozzle (4) formed for exhausting a solution; a charging means (PS, 5, 4) for charging the sample solution within the container; and an airflow generating means for generating airflow (Af) crashing into the sample solution. The immobilization apparatus is configured to operate the charging means and the airflow generating means simultaneously, atomize the solution into microparticulate substances charged while maintaining its activity and functionality by the electrostatic force due to the charge of the sample solution charged by the charging means and the crash energy due to the crash of the airflow generated by the airflow generating means into the sample solution, and exhaust it from the exhaust outlet (4), and the charged microparticulate substances are deposited on a substrate (7) by the electrostatic force.

Abstract: The invention relates to an application element (1) for a rotary sprayer, in particular in the form of a bell-shaped plate or a rotary disc, with an overflow surface (8) which, during the coating operation, rotates together with the application element (1) and is overflowed by a coating agent to be applied, and with a surface layer which is located on the overflow surface (8) and on which a thin coating agent film forms with a certain film thickness during operation, wherein boundary surface friction acts between the coating agent film and the surface layer. It is proposed that the surface layer reduces the boundary surface friction between the coating agent film and the overflow surface (8). Furthermore, the invention comprises an associated operating method.

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).

Abstract: A robotic painting system includes an applicator, a first paint metering device in fluid communication with the applicator, a second paint metering device in fluid communication with the paint applicator, and a paint supply in fluid communication with each the paint metering devices to fill at least one of the paint metering devices with a desired amount of paint, wherein each of the paint metering devices is electrostatically isolated from the paint supply, and wherein a color change time and a paint waste are minimized and a cleaning operation of the system is optimized.

Abstract: A voltage block device, for preventing the negative electric potential from transferred to the coating material source, has a switching device including a slider which is selectively slidable between first and second positions and has an inlet port fluidly communicated with the coating material source and an outlet port fluidly communicated with the spray, a reservoir including first and second chambers, the inlet and outlet ports are fluidly communicated with the first and second chambers, respectively when the slider is at the first position, and the inlet and outlet ports are fluidly communicated with the second and first chambers, respectively when the slider is at the second position.

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.

Abstract: An air source (11) is connected to an air motor (3) through an electropneumatic converter (12) which is connected to a rotational controller (13). Upon changing settings in a target rotational speed (N0) or paint discharge rate (Q0), in order to supply a necessary air pressure for rotationally driving the air motor (3) in a steady state with new setting conditions, the rotation controller (13) selects a steady value (is) from a rotational data selection processing table, and outputs to the electropneumatic converter (12) the newly selected steady value (is) as an input current value (i). By so doing, the rotational speed of the air motor (3) is quickly controlled toward the changed target rotational speed (N0).

Abstract: An electrohydrodynamic spraying or spinning deposition system, which includes a common source of pressurized liquid within a manifold, and an array of 2 or more spraying tips, each tip being fed from the common source of pressurized liquid to create a liquid flow path. An individual flow impedance device is disposed within each tip's individual liquid flow path from the pressurized liquid source into each spraying tip. The individual flow impedance devices are disposed within a replaceable sheet, which can be easily cleaned or changed to accommodate the instance liquid viscosity and composition. A high voltage source is applied to create a high voltage potential applied between the tip array and a deposition surface.

Abstract: The inventive device for electrostatically projecting a coating product comprises a spray gun provided with voltage increasing means for producing a high direct voltage for a product electrostatic charge, wherein said spray gun is provided with a controllable valve for controlling an atomizing air flow inside the spray gun in the direction to a spraying head. A pressure sensor integrated into the spray gun is used for detecting the atomizing air pressure (P) representative value downstream of the valve and for delivering a signal (S1) for controlling the power supply of the voltage increasing means. Said invention makes it possible to control the power supply of the voltage increasing means according, in particular, to the signal (S1) received from the sensor.

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.

Abstract: A spacer spraying system and spacer spraying method are provided which are capable of spraying spacers uniformly in a liquid crystal display panel forming region on a substrate. A stage includes a main stage section having a predetermined size and an auxiliary stage section supported in the main stage section so as to be slid in the main stage section or another auxiliary stage section having a structure in which the auxiliary stage section can be connected to the main stage section. By making the auxiliary stage section be slid in the main stage section or be connected to the main stage section according to a size of a substrate mounted on the stage, a size of the stage is made changeable so that a distance between an edge portion of the stage and a liquid crystal display panel forming region existing near the edge portion of the stage falls within a predetermined range.

Abstract: A painting robot outer arm includes a non-conductive housing mounting a color changer on the outside and a paint canister on the inside connected by an isolating paint transfer line. The paint canister is releasably attached to a piston ram and drive motor by a quick disconnect coupling. The paint supply is isolated from the applied high voltage by cleaning and drying the transfer line. The rate of filling of the canister can be controlled in response to sensed torque applied by a drive motor moving a piston in the paint canister.

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.

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 further 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. A turbine wheel is mounted on the shaft. Compressed gas coupled to the first port impinges upon the turbine wheel to spin the shaft, producing voltage. An electrode adjacent the nozzle is coupled to the generator to receive electricity therefrom to electrostatically charge the coating material. First and second seals seal the shaft where the shaft protrudes from the generator at its ends.

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: A composite structure forming apparatus adapted to ejecting and causing an aerosol generated by scattering brittle material fine particles in a gas to collide with a substrate at high speed to form a structure made of the brittle material. The apparatus includes an aerosol generator for generating the aerosol, a nozzle for ejecting the aerosol, a shredder for shredding the brittle particles cohering in the aerosol and preventing cohesion of the brittle material fine particles, and a classifier for classifying the brittle material fine particles in the aerosol. The apparatus also includes a pretreatment device for creating internal strain in the brittle material fine particles, and a position control device for controlling the position of the nozzle relative to the substrate. The apparatus further includes a container having a sieve and a vibration device, and one or more of these components may be associated with the aerosol generator.

Abstract: A method for optically measuring a surface is described, in particular, for a surface having a spherical form and a high reflection of radiation. The surface is illuminated by at least one radiation source, as well as by at least one structured light source, in order to produce an illumination structure on the surface to be measured, and to then record the illumination structure using a camera; prior to measuring the surface, a coating being applied thereto in order to reduce the reflected radiation, the electrostatic coating principle being followed when applying the coating to the spherical surface. Thus, a method for optically measuring a surface is described, which provides for a coating to be uniformly deposited on the entire surface of the test object and to have a thickness of less than 0.01 mm.

Abstract: An atomizer, provided with an air motor and a rotary atomizing head is mounted on a front side of a housing member. An external electrode assembly, provided with support arms, electrode support members and acicular electrode members is mounted on the outer side of the housing member. A high voltage is supplied to acicular electrode members by a high voltage generator. Electrode support members are covered by a tubular cover member formed of an insulating resin film. An annular gap space is formed between the cover member and electrode support members.

Abstract: A solution containing a sample is provided vibration by a vibrating element, the solution is atomized in a status retaining its activities as minute particulate substances, and the solution and/or the atomized minute particulate substances are electrically charged by wires applied a high voltage. Then, the particles are dried out during flying, the particles are deposited onto a substrate grounded by electrostatic force, and to be immobilized in a status keeping its activities.

Abstract: A method and apparatus are presented for electrostatic deposition of dry powder to a tablet, capsule, or a specific area of any of a wide range of pharmaceutical substrates. The apparatus includes: a magnetic brush having a rotatable multi-pole magnetic core and a stationary outer shell; a developer supply for supplying a magnetic developer powder, consisting of a magnetic carrier particles and pharmaceutical dry powder particles, to the magnetic brush; a print head on the outer shell; a tablet or other pharmaceutical substrate arranged in spaced relation to the print head to define a pharmaceutical powder transfer region through which the substrate can be moved.

Abstract: In an apparatus including a shooting device, a planting device, a drive source for feeding pressurized air to the shooting device, a pile feeding container in communication with the shooting device, and a charge supply including positive and negative charge supply terminals, a method for three-dimensionally planting pile includes coating adhesive on one or more surfaces of a three-dimensional member; electrically connecting the positive charge supply terminal to the planting device for forming a positive electric field thereon; electrically connecting the negative charge supply terminal to the member to be planted for forming a negative electric field thereon with an electrostatic field from the planting device to the member being established; activating the shooting device to project pile through the planting device toward the one or more surfaces of the member as driven by the electrostatic field; and adhering the pile to the one or more surfaces of the member.

Abstract: An apparatus and method for electrostatically coating a body surface with a coating composition. An apparatus of the present invention includes an enclosure, a mount positioned on the enclosure, and an electrostatic nozzle connected to the mount, the electrostatic nozzle adapted for passing the coating composition for deposition on the body surface. The apparatus further includes a floor surface within the enclosure, the floor surface having a resistive electrical connection.

Abstract: An insulation cover for a high voltage paint dosing apparatus, the apparatus comprising a docking head arranged to receive at least one dosing cylinder filled with paint for dosing to an applicator or gun. The docking head is arranged substantially-surrounded by the insulation cover and whereby the external surface of the insulation cover is partly covered by a conductive or non-insulating layer. A system comprising the paint dosing apparatus with the insulation cover is also described.

Abstract: A cover for a robot which includes an electrostatic spray gun with a nozzle which sprays charged material. The cover includes an insulating layer adapted to generally surround the robot except at an aperture where the nozzle extends from the cover. The cover also includes a conductor on the insulating layer near the aperture and spaced apart from the robot. A charge source provides an electric charge to the conductor.

Abstract: The invention relates to a powder diffuser nozzle (2) for an electrostatic dusting device, which is designed to be positioned at the end of an applicator gun. The inventive nozzle (2) comprises: a lateral wall (49) which defines a passage that extends from the powder conduit (8) of the gun (3), and a base (56) which seals said conduit (8) at the end thereof. In addition, a port (57) is provided in the lateral wall (49) close to the base (56) in order to connect the powder conduit (8) with the exterior of the nozzle (2). The axis (A1) of the port (57) forms a determined angle (A) with the axis (A2) of the powder conduit (8). Moreover, at least one deflector (58) is provided on the base of the nozzle (56) or on the lateral wall (49) close to said base in order to divert the jet of powder from the conduit (8) along the axis (A1) of the port (57).

Abstract: An electrospraying apparatus and/or method is used to coat particles. For example, a flow including at least one liquid suspension may be provided through at least one opening at a spray dispenser end. The flow includes at least particles and a coating material. A spray of microdroplets suspending at least the particles is established forward of the spray dispenser end by creating a nonuniform electrical field between the spray dispenser end and an electrode electrically isolated therefrom. The particles are coated with at least a portion of the coating material as the microdroplet evaporates. For example, the suspension may include biological material particles.

Abstract: An electrohydrodynamic spraying or spinning deposition system, which includes a common source of pressurized liquid within a manifold, and an array of 2 or more spraying tips, each tip being fed from the common source of pressurized liquid to create a liquid flow path. An individual flow impedance device is disposed within each tip's individual liquid flow path from the pressurized liquid source into each spraying tip. The individual flow impedance devices are disposed within a replaceable sheet, which can be easily cleaned or changed to accommodate the instance liquid viscosity and composition. A high voltage source is applied to create a high voltage potential applied between the tip array and a deposition surface.