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.

A fluid sprayer includes a pump and an electrostatic module configured to provide an electrostatic charge to spray fluid. The electrostatic module is electrically connected to a conductive component of the fluid sprayer, such as a fluid displacement member, fitting, cylinder, or spray tip, to charge the spray fluid via the conductive component. The fluid is electrostatically charged prior to exiting the fluid sprayer.

A fluid sprayer includes a housing defining a reservoir attachment portion, a pump supported within the housing, a nozzle assembly supported by the housing and located in fluid communication with the pump, and an electrostatic charging circuit configured to impart an electrostatic charge in a fluid pumped out of the nozzle assembly by the pump. The fluid sprayer also includes a first reservoir including a first latch configured to releasably secure the first reservoir to the reservoir attachment portion to fluidly couple the first reservoir to the pump. The fluid sprayer further includes a second reservoir including a tank, an adapter, and a hose fluidly connecting the tank to the adapter, the adapter including a second latch configured to releasably secure the adapter to the reservoir attachment portion to fluidly couple the tank to the pump.

An apparatus for use in drywall plastering, and more specifically for applying a pumpable finishing compound to a surface, is disclosed. The apparatus comprises a receptacle for storing the pumpable compound, an applicator for applying the compound to a surface or feature to which the compound is to be applied, a pump for pumping the compound from the receptacle to the applicator for application to the surface or feature, an electric motor which drives the pump, a battery that powers the electric motor, and a conduit through which the compound is pumped from the receptacle to the applicator, and the receptacle, pump, motor and battery of the apparatus may be able to be worn by a user, or carried on a part of the user’s body, while the apparatus is in use for applying the compound to the surface or feature. The apparatus is self-contained and self-powered, and it can consequently operate in an “untethered” manner in the sense that it does not require any power cables extending from the apparatus to a remote power outlet or generator, and there is no need for any hoses or the like to deliver finishing compound, or compressed air, or anything like that, to the apparatus while it is in use.

A docking station for a hand-held filament extension atomizer device includes a receiver to receive the device, station electronics, a recharging point for the device arranged to connect with a power source of the device, a power connection to an alternating current power source, and a cleaning reservoir of cleaning solution. A method of operating hand-held dispenser to dispense fluid as a mist includes receiving a signal at a motor contained in a casing in response to a user triggering an actuator on the casing, activating the motor to provide fluid to a filament extension atomizer contained in the case from a reservoir contained in the casing, the motor to cause the filament extension atomizer to generate a mist, and using an air source contained in the casing arranged adjacent the filament extension atomizer to provide air flow to direct the mist to a nozzle that is arranged to allow the mist to exit the casing.

A fluid control device includes a housing. The housing includes a first main plate, a second main plate, and a side plate connecting the first main plate and the second main plate. The housing has a pump chamber defined by the first main plate, the second main plate, and the side plate. The fluid control device also includes a driver, a first hole that extends through the first main plate or the second main plate, and a first recess formed in the first main plate between a center and a circumference or the second main plate between a center and a circumference.

A system for combining and spraying fluids that includes a principal reservoir for holding a carrier fluid; an electric pump in communication with the principal reservoir; a power source for energizing the pump selectable between a rechargeable 12-volt battery and a 110-volt AC line; at least one auxiliary reservoir for holding an auxiliary fluid to be controllably mixed with carrier fluid being drawn from the principal reservoir; a selector valve for selecting which if any of the auxiliary fluid(s) are to be combined with the carrier fluid; a Venturi tube for combining streams of carrier fluid and selected auxiliary fluid(s) in a predetermined ratio which may be varied as desired; and a spray wand in fluid communication with the Venturi tube for discharging the selected fluids.

A wireless variable pressure sprayer that includes a housing in which is mounted a battery, a battery-operated motor, and a motor-operated liquid pump. A tank communicates with the pump for holding a supply of liquid and a user operable spray gun is connected for liquid flow communication from the tank. A wireless transmitter is positioned in the spray gun and is adapted to transmit a wireless signal to a receiver/controller for supplying current from the battery to the motor sufficient to cause the motor operated pump to deliver liquid through the gun and into an applicator wand.

A fluid sprayer includes a housing, a pump, a nozzle, a high voltage direct current (HVDC) brushed electric motor that drives the pump, and a motor controller electrically connected to the motor. The motor controller drives the motor with a high speed pulse width modulated (PWM) drive signal that switches current through the motor on and off. The motor controller varies the PWM signal as a function of a spray setting input and sensed current through the motor.

A handheld computer device is configured to selectively receive a plurality of fluid output values from a paint sprayer and configured to operate in an accessible mode in which the handheld computer device is in a first location where wireless connectivity, via a continuous or near continuous communication path, to at least one of a network server or the paint sprayer is accessible or operate in an inaccessible mode in which the handheld computer device is in a second location out of range of the continuous or near continuous communication path to at least one of the network server or the paint sprayer.