A backpack sprayer system includes a mounting bracket having a battery receiving fixture to receive a battery. A first tank is mounted to the mounting bracket and holds a diluent. A second tank is mounted to the mounting bracket and holds a liquid concentrate. A mixing manifold is mounted to the mounting bracket and has a first inlet fitting to receive a fixed amount of diluent and a second inlet to receive an adjustable amount of liquid concentrate. The fixed amount of diluent and adjustable amount of concentrate are combined to form a mixed solution and the mixing manifold includes a mixed solution outlet. A positive displacement pump is mounted to the mounting bracket and a suction port coupled to the mixed solution outlet and a pressure port fluidly coupled with a spray device. A control unit is mounted on the mounting bracket and receives power from the battery.

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.

The personal cooling misting system disclosed provides for a wearable fluid reservoir to contain a volume of misting fluid, and an electrically operated pump proximate to the reservoir to pump the misting fluid from the reservoir to a misting head. The misting head facilitates atomizing the misting fluid. The system further provides for feed tubing to direct the misting fluid from the reservoir to the pump, and distributive tubing to direct the misting fluid from the pump to the misting head. The system also includes a pump control to control at least one of a pressure and a flow rate of the misting fluid through at least one of the feed tubing and distributive tubing, and the system includes a programmable circuit board to facilitate system control via the pump control, as well as directing to the pump control a misting distribution pattern for at least one of a consistent or intermittent misting pattern.

The present disclosure is directed to a tool for operating a nozzle holder. The tool may include an elongated body extending between a first end and a second end opposite the first end, the second end defining a recess configured to selectively receive and hold a portion of the spray nozzle. The tool may include a nozzle storage receptacle formed in the elongated body between the first end and the second end, the nozzle storage receptacle configured to selectively receive and hold the spray nozzle. The nozzle storage receptacle defines an aperture that extends through the elongated body between a first lateral side of the elongated body and a second lateral side of the elongated body opposite the first lateral side.

The disclosure includes a system comprising a first chamber having pressurized gas, a compressor connected to the first chamber (which may be a bladder), and a second chamber connected to the first chamber. The second chamber includes contents. The system also includes an exit from the second chamber. The pressurized gas from the first chamber travels into the second chamber to force the contents out of the exit of the second chamber. The compressor increases the pressure of the gas in the first 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 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.

A backpack sprayer has a carrying arrangement, on which a container for spraying agent is arranged. The container has a filling opening which can be closed by way of a lid. The carrying arrangement has a set-down position, in which the carrying arrangement is set down on a planar, horizontal set-down surface. The spraying agent region of the container is the region which is provided for spraying agent and extends as far as a maximum permissible filling height (max). The spraying agent region has a greatest horizontal inner cross-sectional area (A) in the set-down position. In order to allow simple filling of spraying agent and simple cleaning of the container, it is provided that the container can be opened at the filling opening over at least 60% of its greatest inner cross-sectional area (A).

A backpack working machine may include: a body unit comprising a liquid tank configured to store liquid; a shoulder harness unit attached to the body unit; and an ejection tube configured to eject the liquid and being on a first side relative to the body unit when the shoulder harness unit is worn on the shoulders of the user. The shoulder harness unit may include: a right shoulder harness attached to the body unit at a first attaching part; and a left shoulder harness attached to the body unit at a second attaching part. A center position between the first attaching part and the second attaching part may be on the first side relative to a gravity center position of the body unit when the liquid is stored in the liquid tank at a maximum capacity of the liquid tank.

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.

The backpack paint sprayer comprises a backpack, a spray gun, and a hose assembly. The backpack paint sprayer may be a portable spray-painting system. The backpack may carry a supply of paint which may be pumped from the backpack to the spray gun via the hose assembly. A turbine located within the spray gun may create an air stream that may atomize the paint and may disperse the paint over a surface being painted. The backpack may be adapted to be worn by a user and may enable the user to move about without being constrained by a paint supply hose coupled between the spray gun and a compressor.