An electrostatic fluid delivery system that is configured to deliver fluid, such as a disinfectant fluid, onto a surface by electrically charging the fluid and forming the fluid into a spray that can be directed onto a surface, such as a surface to be cleaned. The system is powered by a DC (direct current) power system. The device can electrically or positively charge a liquid or gas.

An apparatus for personal hygiene of patients with reduced mobility is presented. The apparatus includes a support casing, a housing for accommodating a removable tank, a grippable washing head, a pump, a hydraulic circuit, and a valve assembly. A working operation mode and a standby operation mode are provided. In the working operation mode, the valve assembly determines in the hydraulic circuit a water supply path from the tank, to the pump, to the washing head and finally out of the delivery mouth. In the stand-by operation mode, the valve assembly determines in the hydraulic circuit a water recirculation path from the tank, to the pump, to the washing head and finally back to the tank, without water flowing out of the delivery mouth.

The present invention is directed to an electrostatic sprayer for applying disinfectants, agricultural production, pesticides, and other chemicals and liquid solutions. The electrostatic sprayer may be used for indoor and outdoor applications. The electrostatic sprayer provides a solution tank for holding a treatment solution, a base for holding and protecting the mechanical and electrical components, including a power supply, solution pump, and electrostatic generator, of the electrostatic sprayer, a supply hose, and a spray wand. The solution tank further includes input and exit filters to remove particles that may damage the solution pump of clog the spray wand. The spray wand includes spray nozzles with backflow valves and metering disks to control the flow of the treatment solution and close the valve when the treatment solution is not sufficiently pressurized to pass through the backflow valve to prevent leak when not in use. An electrostatic switch is also provided for selectively powering on the electrostatic generator. The electrostatic generator provides a positive charge to an electrode in the solution tank and a negative charge to a grounding strip in the handle of the spray wand providing a negative pathway through Earth to the objects being treated enhancing the electrical attraction of the treatment solution to those items. A grounding strap is also provided to be worn by the user to reduce the resistance in the path between the grounding strip and Earth by bypassing some of the user's clothing and protective gear that may provide resistance to the path.

A liquid delivery device includes a cylinder having a liquid retention section configured to retain a liquid, a piston configured to change a volume of the liquid retention section, a gas container configured to encapsulate a gas at pressure exceeding atmospheric pressure, a regulator which is coupled to the gas container, and is configured to adjust pressure of the gas delivered from the gas container, a gas flow channel having a supply flow channel configured to supply the gas delivered from the regulator to the piston, and a release-to-atmosphere flow channel configured to release the gas delivered from the regulator to an atmosphere, and a three-way valve provided to the gas flow channel to switch between delivering the gas delivered from the regulator to the supply flow channel and delivering the gas to the release-to-atmosphere flow channel.

A mix on exit sprayer having a water tank and a body the includes a chemical cartridge receiving cavity. A pump move water from the tank to a mixing chamber and a piston drives chemical concentrate from the cartridge into the mixing chamber. A venturi style mixing element mixes the water and concentrate and the pump moves the mixed fluid from the mixing chamber to a spray wand from which it can be expelled.

A spray gun includes a casing, a cup, a spray nozzle, and a pump. The pump is provided in the casing and has a spray chamber in communication with the cup. The cup includes a cup housing and a flexible cup body provided in the cup housing. A venting structure communicating the cup with an outer environment is provided on the pump. The cup housing is provided with a hollow portion, such that the flexible cup body is manually squeezable to expel air inside the flexible cup body out via the venting structure.

A fluid dispensing device includes a housing and a reciprocating piston fluid pump coupled to the housing. The reciprocating piston fluid pump includes a piston disposed within a cylinder. The piston is configured to pressurize at least one pumping chamber. A motor is coupled to the housing and connected to the reciprocating piston fluid pump to actuate the piston. A wobble assembly connects the motor to the piston of the reciprocating piston fluid pump. A spray tip connected to an outlet of the at least one pumping chamber.

An electrostatic fluid delivery system is configured to deliver fluid, such as a disinfectant fluid, onto a surface by electrically charging the fluid and forming the fluid into a mist, fog, plume, or spray that can be directed onto a surface, such as a surface to be cleaned. The system atomizes the fluid using a high-pressure fluid stream and passes the fluid through an electrode of a nozzle assembly to charge droplets of the atomized fluid.

A liquid spray nozzle includes a nozzle hole configured to spray a liquid toward an object, a liquid flow channel communicated with the nozzle hole, and a filter disposed in the liquid flow channel, wherein at least one of a part of the filter and a part of the liquid flow channel from the filter to the nozzle hole forms an antibacterial part.

An applicator comprises a housing having a liquid input, a pump, a motor, and a power source; a trigger for providing selective control over the pump; a wand hingedly connected to the housing; and a nozzle coupled to the wand for discharging liquid from the applicator. The nozzle and the liquid input are in fluid communication via the pump and various conduits of the applicator.