A mist blower in one aspect of the present disclosure includes an air blower, an air feed pipe, a tank, a liquid feed pipe, a nozzle, a first electromagnetic valve, a controller, and a first manual switch. The first electromagnetic valve (i) opens the liquid feed pipe in response to the first electromagnetic valve being activated and (ii) closes the liquid feed pipe in response to the first electromagnetic valve being deactivated. The controller activates or deactivates the air blower and the first electromagnetic valve. The first manual switch (i) is manually moved by a user of the mist blower and (ii) commands the controller to activate or deactivate the air blower based on a movement of the first manual switch.

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.

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 sprayer includes a spray gun and a hopper. An air source provides compressed air to the sprayer to both eject fluid from the spray gun as a spray and to pressurize the hopper. The spray gun includes passages for providing compressed air to the nozzle for spraying and to the hopper for pressurizing the hopper. The spray gun further includes a relief valve for venting pressurized air from the hopper. The hopper receives the compressed air through a port in the hopper, and the compressed air assists the flow of material out of the hopper and into the spray gun.

A product applicator is secured to the blower tube of a portable air blower and incorporates an adapter nozzle assembly and product storage container. The adapter nozzle assembly is located at a distal end of the blower tube, and includes a substantially hollow tubular housing and a discharge nozzle located inside the housing. The housing has a discharge end and a connecting end adapted for being arranged inline with a discharge airstream supplied by the blower. The product storage container is located proximate the housing, and is designed for storing a product to be discharged through the discharge nozzle. A flow regulator is adapted for selectively adjusting a supply of product from the container to the discharge nozzle.

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 air stream and passes the fluid through an electrode inside a nozzle assembly to charge, such as negatively charge, droplets of the atomized fluid. The system uses a unique nozzle design that is configured to optimally atomize the fluid into various sized droplets.

Various embodiments of a spray gun converter (100) and a spray gun system that includes such converter (100) are disclosed. The spray gun converter (100) includes a body (102) having a first end (104) configured for insertion into an air passage of a spray gun (11), a second end (106) having a converter fitting (108) configured for connection to a reservoir (30), and a reservoir air passage (110) extending through the body (102) from an inlet end (112) at the first end to an outlet end (114) on the converter fitting (108) at the second end. The spray gun converter (100) also includes a reservoir air control valve (116) that opens and closes the reservoir air passage (110).

A system and method for dermal spraying includes a portable, hand-held dermal application device with one or more disposable cartridges that spray a dermal formulation onto the skin, the disposable cartridge having a nozzle that can be activated by placing the cartridge into the spray device.

HVLP (High Velocity Low Pressure) motor-driven fans and other types of fans, blowers and vacuums take advantage of different thermal and mechanical properties of dissimilar materials used in the motor-driven fans. The dissimilar materials include aluminum for a stacked arrangement of fan wheels and spacers, steel for a shaft that supports the fan wheels and spacers, and a polymeric adhesive. In some examples, the polymeric adhesive is trapped between the aluminum and steels parts. Compared to steel and aluminum, the adhesive has a relatively high coefficient of thermal expansion but relatively low strength such that thermal expansion of the adhesive exerts additional clamping pressure during startup and during high temperature operation. The additional clamping pressure reduces vibration and eliminates other causes of fan or motor failure.

A kit is described for the conversion of a blower into an atomizer. The kit includes: a tank (45) adapted to contain a liquid, a tubular body adapted to be fixed to the blower and provided with an inlet mouth and an outlet mouth, a diffuser device associated with the tubular body and provided with a liquid dispensing nozzle, a pressurization conduit which places in fluid communication an internal volume of the tubular body placed between the inlet mouth and the liquid dispensing nozzle with a top portion of the tank, and a dispensing conduit which places in fluid connection the dispensing nozzle of the diffuser device with a lower portion of the tank.