An electrostatic atomizer can include a paint supply path configured to supply paint to a paint discharge section; and a high voltage supply path configured to supply a high voltage to a discharge electrode, wherein the discharge electrode comprises a semi-conductive material, and wherein the high voltage supply path includes a high resistance near the discharge electrode, and is electrically segregated from the paint supply path.

The durability of resin components can be improved by preventing ozone from staying in gaps where there is no air flow. A cylindrical gap is provided around the outer peripheral side of the head portion between the head portion and the resin cover portion covering the outer peripheral side of the head portion. Moreover, the head portion is provided with a pilot air introduction path guiding the pilot air exhausted from the switching valves to the cylindrical gap. In addition, the arm portion is provided with a pilot air exhaust path exhausting the pilot air from the cylindrical gap to the outside.

A rotary coating sprayer including a spray bowl rotating about an axis of rotation and an air turbine for driving the bowl. The turbine includes a rotor and a body forming a support for the rotor and defining at least one air feedline for a rotation chamber wherein the rotor blades are arranged. The feedline includes an intermediate chamber defined, radially to the rotation axis, between the body and a ring mounted around the body. In this way, lowering of temperature of an element of the sprayer housing due to flow of exhaust air from the turbine, is limited.

A handheld portable electrostatic device for electrostatically applying a treatment solution to a treatment site of a patient, including a housing and a cartridge removably disposed in the housing. The cartridge includes a cartridge housing and a nozzle for applying the treatment solution. An electrostatic module is provided to electrostatically charge and ionize molecules of the treatment solution of the cartridge. The treatment solution is configured to flow toward the nozzle whereby at least one electrode electrically connected to the electrostatic module physically contacts the treatment solution as it flows therethrough and applies an electrical charge to the treatment solution.

An electrostatic centrifugal spraying system for direct electrification includes a tank configured to store liquid. The tank includes an internal dielectric surface and an external conducting surface, wherein when the liquid is stored in the tank, the tank is configured to act as a capacitor storing electrical energy for electrostatic spraying. The spraying system further includes a power supply, configured to electrify liquid drops of the stored liquid, and a spray nozzle, comprising a spray disk for blowing the electrified liquid drops unto a target.

A rotary atomizer turbine is provided, the turbine including a turbine wheel with multiple turbine blades, a blade duct containing the turbine blades and being delimited radially by a duct wall, a braking air nozzle, a driving air nozzle and an outlet region at the outlet of the driving air nozzle. The outlet region is delimited at the outside by the duct wall of the blade duct and at the inside by the turbine blade respectively passing through it. The blade duct is delimited radially at the inside opposite the braking air nozzle by a stationary flow barrier. Furthermore, the outlet region of the individual driving air nozzles is a divergent cross-sectional region which widens in the flow direction and rotates with that turbine blade passing the driving air nozzle.

An electrostatic atomizer can include a paint supply path configured to supply paint to a paint discharge section; and a high voltage supply path configured to supply a high voltage to a discharge electrode, wherein the discharge electrode comprises a semi-conductive material, and wherein the high voltage supply path includes a high resistance near the discharge electrode, and is electrically segregated from the paint supply path.

A bearing air passage through which bearing air is supplied toward an air bearing of an air motor and a turbine air passage through which driving air is supplied toward a turbine are provided in a housing. An annular space surrounding the air motor is provided between the housing and a cover. A bearing air branch passage connecting the annular space and the bearing air passage to each other and a turbine air branch passage for connecting the annular space and the turbine air passage to each other are provided. The air branch passages lead a part of the compressed air to the annular space and keep the cover in a heated state.

An applicator is disclosed for applying a treatment solution to a treatment site of a patient. The applicator can include an applicator housing comprising a treatment solution reservoir. A cartridge can be removably disposed in the housing. The cartridge when arranged in the housing can be in fluid communication with the treatment solution reservoir. The cartridge can include an electrostatic module for electrostatically charging the treatment solution in the treatment solution reservoir; and a nozzle for applying the treatment solution.

An automated drone-based surface treatment material delivery system includes a drone having a body, at least one propeller rotatably supported by the body, at least one propeller motor supported by the body and configured to selectively apply motive power to the at least one propeller, and a controller supported by the body and configured to control a flight path of the drone at least by manipulating a speed of the at least one propeller. The drone also has a rotary atomizer supported by the body for movement therewith. The rotary atomizer includes a rotating dispersion structure configured to disperse a surface treatment material from a material supply.