Apparatus for electrostatic coating

An electrostatic coating apparatus comprising:

• an enclosure comprising a wall defining a volume;
• a baffle movably connected to the enclosure defining within the volume a storage area and a discharge area and wherein the baffle defines a passageway between the storage area and the discharge area;
• a mixture of gas and suspended particles within the volume;
• and
• a first electrode for forming an electrostatic field to impart a charge to a first stream of particles,
• wherein the enclosure further comprises a first variable opening in communication with the discharge area for discharging a first stream of particles, and a second variable opening in communication with the discharge area for discharging a second stream of particles, wherein each of the first and second variable opening comprises a gas-releasing device to further discharge the streams of paint particles, and wherein the gas-releasing device is an air knife with a slitted nozzle for creating a uniform sheet of air across the length of the slitted nozzle;
• and wherein the first opening and the second opening are of variable size and the gas-released devices are on a movable rack with a handle for the opening variation of the first opening and the second opening.

An electrostatic coating apparatus comprising:

• an enclosure for holding a mixture of gas and suspended particles;
• a pump operatively coupled to the enclosure for pumping a plurality of particles into the enclosure;
• a supply of compressed air operatively coupled to the enclosure;
• a control device operatively coupled to the enclosure;
• and
• a power source electrically coupled to the control device and a first electrode,
• wherein the enclosure comprises a wall defining a volume, a baffle movably connected to the enclosure defining within the volume a storage area and a discharge area, a first variable opening for discharging a first stream of particles, and a second variable opening for discharging a second stream of particles, and gas release pipes, p1 wherein the control device controls a flow of particles within the enclosure by controlling the baffle, the first variable opening, the second variable opening, the pump, and an intensity of the power of the first electrode;
• and wherein the first opening and the second opening are of variable size and wherein the supply of compressed air are on a movable rack with a handle for the opening variation of the first opening and the second opening.

An electrostatic coating apparatus comprising:

• an enclosure with surface strengtheners for holding a pressurized fluidifled mixture of gas and suspended particles comprising a first variable opening for discharging a first stream of the mixture of gas and suspended particles onto a medium and a second variable opening disposed adjacent to the first opening for discharging a second stream of the mixture of gas and suspended particles onto the medium;
• a first electrode forming a first electrostatic field thereabout, the first electrode disposed adjacent to the first stream such that the first electrostatic field imparts a charge to the first stream and the second stream;
• and
• a second electrode forming a second electrostatic field thereabout, the second electrode disposed adjacent to the second stream such that the second electrostatic field imparts a charge to the second stream and the first stream, wherein the enclosure further comprises a first gas-releasing device to further release the first stream of suspended particles onto the medium, and a second gas-releasing device to further release the second stream of suspended particles onto the medium, and wherein the first and the second gas-releasing devices are air knives
• wherein the enclosure includes a series of pipes with small openings connected to a source of compressed air, for the release of the gas from the source into the enclosure;
• and wherein the first opening and the second opening are of variable size and the gas-releasing devices are on a movable rack with a handle for the opening variation of the first opening and the second opening.