A portable liquid mister assembly capable of being worn on a person's back. It includes a liquid reservoir, a pressure pump and a DC power supply and a misting wand assembly. When a person pulls the trigger of the misting wand, a very fine mist of approximately two-hundred-micron liquid droplets is emitted from the misting head. The liquid inside the reservoir is non-pressurized and becomes pressurized when it enters the pressure pump. Therefore, the liquid reservoir does not have to withstand excessive pressures during use. Spare power supply batteries may be carried in pockets attached to the reservoir. The reservoir holds approximately three gallons of liquid.

The invention relates to the application of liquid active substances with the acid of a portable spray device. The subject matter of the present invention is a system comprising a portable spray device and a replaceable cartridge that contains an active substance concentrate. The invention also relates to method for applying a liquid active substance formulation. In addition, the invention discloses a replaceable cartridge that has a memory unit in which information is stored relating to an adjustable dilution ratio for the active substance concentrate contained in the cartridge. The invention also relates to a spray device comprising a control unit that can be read out a memory unit of cartridge attached to the spray device and, on the basis of the read out information, adjust a dilution ratio for the active substance concentrate contained in the cartridge.

A pneumatic paint brush feeder apparatus for supplying paint on demand to a brush includes a paint container having a top side with a fill aperture extending through to a reservoir. A lid seals and alternatively unseals the fill aperture. A battery powered compressor is coupled to the paint container and an air line extends from a compressor tank into an intake aperture of the paint container to pressurize the reservoir. A hose extends through an outlet aperture of the paint container to deliver the paint to a distal end of the hose. A brush is coupled to the hose and has a delivery tube extending from a bottom end of a handle, through a head and into a plurality of bristles to deliver paint into the bristles. A button is coupled to the brush to prevent, or alternatively allow, the flow of paint to the bristles.

A spray nozzle is disclosed that includes a nozzle body having a first portion with a cylindrical configuration and a second portion including a dome-shaped end wall. The first and second portions of the nozzle body define an internal fluid passage having a downstream end defined by the dome-shaped end wall. A flow control element is arranged at an inlet end of the internal fluid passage. The flow control element includes a pre-orifice through which fluid can enter the internal fluid passage of the nozzle body. First and second discharge orifices are provided in the dome-shaped end wall with each of the first and second discharge orifices being arranged on a respective one of opposing sides of an apex of the dome-shaped end wall. The first and second discharge orifices are configured to produce a fan-shaped fluid discharge pattern with each discharge orifice having an elongated slit-like configuration.

A harness for a portable lawn/garden fluid sprayer having a tank and a spray hose is provided. The harness generally includes a first strap adapted to securely wrap around the tank adjacent the top thereof and having a first end and a second end that are interconnected by a first fastener that permits adjustment of the first strap; a second strap adapted to securely wrap around the tank adjacent the bottom thereof and having a first end and a second end that are interconnected by a second fastener that permits adjustment of the second strap; third and fourth straps that each tautly extend between the first and second straps and each having first ends that extend through a third fastener and fourth fastener, respectively, that permit the length of the third and fourth straps, and hence the distance separating the first and second straps, to be selectively adjusted; and first and second handles attached to the first strap.

A timber marking system includes a portable back pack mounted user, the pack carrying a paint storage tank and a pressurized gas tank. The storage tank is pressurized and coupled with a manually operated trigger to allow filed operated timber marking. A method to mark timber includes preparing the tank system with pressurized gas, selectively marking a preidentified tree at the trunk and stump.

The invention relates to a pressurised vessel for holding a fluid to be dispensed under pressure. The vessel includes a chamber for receiving the fluid and the pressurized delivery fluid, such as compressed air. The vessel is intended to be portable and includes a means for handling the vessel, additionally the vessel may be mounted to a manual surface engaging unit for transporting the vessel. Such unit may include a wheeled arrangement or sliding arrangement, such as ski's.

An internal pump backpack sprayer system includes a first tank, a second tank and a pump unit. The first tank includes a tank housing for holding a fluid. The second tank is received within the first tank and receives a pressurized fluid. The pump unit has a cylinder housing with first and second inlets and first and second outlets, a piston within a cylinder and a pressure discharge assembly. When the piston moves in an up-stroke, fluid is drawn from the first tank through the first inlet while all or some pressurized fluid is discharged through the pressure discharge assembly with a remainder being discharged to the second tank through the second outlet. When the piston moves in a down-stroke, fluid is drawn from the first tank through the second inlet while pressurized fluid is discharged to the second tank through the first outlet.

The present invention relates to a portable spraying device (1) for discharging a fluid, in particular an agricultural formulation, having a container (2) for holding the fluid, a pump (15), which is in fluid connection with the container (2), for pumping the fluid out of the container (2), a spray gun (21), which comprises a spray opening (27) and an electrically controllable application valve (20) for opening and closing a passage to the spray opening (27), an application line (17), which establishes a fluid connection between the pump (15) and the spray gun (21). The spraying device (1) according to the invention is distinguished by a pressure sensor (19), which is arranged in the application line (17), for detecting the fluid pressure in the application line (17), and an electric control device (28), which is coupled to the application valve (20) and the pressure sensor (19) in terms of data transmission, by means of which device an electric control signal for opening the application valve (20) for a certain predetermined time interval and for closing the application valve (20) on expiry of the time interval can be produced in accordance with the fluid pressure detected by means of the pressure sensor (19), with the result that a defined volume of the fluid is discharged via the spray opening (27).

An internal pump backpack sprayer system includes first and second tanks and a double action pump unit. The first tank defines an open volume to hold a fluid. The second tank is received within the first tank and receives a pressurized fluid therein. The double action pump includes a cylinder and piston assembly having a cylinder housing with first and second inlets and first and second outlets. A piston is located and moveable within a cylinder. When the piston moves in an up-stroke, a first portion of the fluid is drawn from the first tank through the first inlet while the pressurized fluid is discharged to the second tank through the second outlet. When the piston moves in a down-stroke, a second portion of the fluid is drawn from the first tank through the second inlet while the pressurized fluid is discharged to the second tank through the first outlet.