A water spraying assembly is provided which includes a central conduit, an impeller, and a mist nozzle having a tapered chamber that decreases in cross-sectional area as it narrows into a nozzle outlet sufficiently small so as to reduce the flowing water's pressure as it is transported down the chamber. The impeller includes blades which form channels for receiving water from the central conduit. Further, these channels produce a vortex, rotating the passing water stream. The impeller is directly adjacent to, upstream and in fluid connection with the entrance of the tapered chamber which tapers inwardly until it reaches its smallest measurement at the nozzle outlet. Consequently, the swirling water and the tapered chamber create a low-pressure environment, thereby increasing the water's velocity and force. Due to the high velocity and the outlet's small opening, water is ejected from the outlet as small droplets in a fine mist spray pattern.

A drip emitter is provided for delivering irrigation water from a supply tube to an emitter outlet at a reduced and relatively constant flow rate. Water enters the emitter through a first inlet and proceeds into a first chamber. When the water pressure is above a predetermined level, a one-directional valve opens to allow fluid flow past the first chamber, through a tortuous path flow channel, and through an emitter outlet. A second inlet is used to compensate for water pressure fluctuations in the supply tube to maintain output flow at a relatively constant rate. Water enters the second inlet and presses a flexible diaphragm toward a water metering surface to provide pressure-dependent control of the output flow. A copper member is mounted to the emitter over the emitter outlet to prevent plant root intrusion into the emitter outlet.

A pulsating device has a chamber for receiving liquid entering the device and gas that occupies an initial volume in the chamber. The liquid entering the chamber compresses the gas and decreases the volume occupied by the gas, thereby increasing the pressure in the chamber. A valve is provided to open above a first threshold pressure to begin a pulse of liquid. The valve closes below a second threshold pressure to end the pulse. The pulsating device has an outlet gate that permits liquid in the chamber to exit the chamber when the pressure in the chamber is greater than the pressure outside the chamber.

An actuator system having a stationary circular array of mechanical devices. The actuator system includes two stationary motors: one motor to rotate the actuator implement around the circular array of mechanical devices until the desired mechanical device is reached; and a second motor to rotate the actuator implement into engagement with an actuator pin of the mechanical device. A nozzle includes a three-sided or U-shaped stationary enclosure, together with a movable gate that completes the enclosure and forms an adjustable size nozzle outlet. As the gate closes after a dispense is complete, a controlled flow of residual liquid exits the nozzle outlet to avoid any additional displacement, thus preventing the undesirable effect of liquid being squeezed out of the nozzle outlet as the gate closes. Conversely, when the gate opens, this sniff back action operates in reverse, thereby filling the nozzle outlet and preventing air from filling the nozzle.

The invention provides a telescoping wand assembly for use in dispensing liquid from a container, including a trigger module extending along a longitudinal axis between proximal and distal ends. The trigger module includes a tubular handle member, a user accessible trigger positioned externally of the tubular handle member that is selectively movable between first and second positions, a hose positioned within the tubular handle member and adapted to transport liquid from the container, and a valve actuating member that is selectively, movably actuable by movement of the trigger between its first and second positions. A stationary frame assembly provides rigidity and contact points for a telescopically movable tube assembly that extends from the trigger module. A shut-off valve and nozzle are positioned at the distal end of the wand assembly and movement of the shut-off valve is controlled by the trigger and translated by way of the tube assembly.

A water injector assembly includes an injector body having a substantially hollow interior. The injector body defines an inlet opening defined within an outer radial surface of the injector body at a first axial location along the injector body. The injector body defines a flowpath opening in fluid communication with the inlet opening such that the flowpath opening is configured to receive the fluid from the inlet opening. The injector body defines an outlet opening defined within the injector body at a second axial location along the injector body. The outlet opening is in fluid communication with the flowpath opening, such that the outlet opening receives the fluid from the flowpath opening. The second axial location of the outlet opening is different than the first axial location of the inlet opening.

A drive circuit is provided for controlling a solenoid valve having a solenoid coil. The drive circuit includes a first semiconductor device, a flyback circuit, and a processor. The first semiconductor is coupled in series with the coil and is controlled by a gate signal to energize the coil. The flyback circuit is in parallel with the coil and includes a series-coupled second semiconductor device and a diode. The second semiconductor is controlled by a flyback control signal to enable the flyback circuit when the first semiconductor is controlled by the gate signal to hold the valve open. The diode has a low forward voltage to slow decay of a current conducted through the coil. The processor generates the gate signal to control the first semiconductor and to reduce a duty cycle of the gate signal when the flyback circuit is enabled to reduce power consumption by the coil.

A drive circuit is provided for controlling a solenoid valve having a solenoid coil. The drive circuit includes a first semiconductor device, a flyback circuit, and a processor. The first semiconductor is coupled in series with the coil and is controlled by a gate signal to energize the coil. The flyback circuit is in parallel with the coil and includes a series-coupled second semiconductor device and a diode. The second semiconductor is controlled by a flyback control signal to enable the flyback circuit when the first semiconductor is controlled by the gate signal to hold the valve open. The diode has a low forward voltage to slow decay of a current conducted through the coil. The processor generates the gate signal to control the first semiconductor and to reduce a duty cycle of the gate signal when the flyback circuit is enabled to reduce power consumption by the coil.

The present invention has an object to provide a coating vice which can reduce variation in the amount of discharge in the discharge nozzle group. A coating device 1 includes: a first supply unit 40 and a second supply unit 50 which can supply a viscous material N to the discharge nozzle group 10; and a control portion 100 which stops, at the timing at which a first time zone is switched to a second time zone, the supply in the first supply unit 40, which makes the second supply unit 50 start the supply of the viscous material N to the discharge nozzle group 10 at a second flow rate and which makes, in a second time zone, the first supply unit 40 start the preparation of the viscous material necessary in any one of a third time zone and the subsequent time zones.

The present disclosure is related to a showerhead including a housing, a turbine, and a shutter. The housing defines a fluid inlet and a chamber in fluid communication with the fluid inlet. The chamber includes a plurality of engagement teeth and defines outlets for a first nozzle bank and a second nozzle bank. The turbine is received in the chamber. The shutter is received in the chamber and rotatably coupled to the turbine such that rotation of the turbine causes movement of the shutter. The shutter includes a plurality of shutter teeth positioned around a perimeter of the shutter. Engagement of the shutter teeth and the engagement teeth act to restrict the shutter from rotating while allowing the shutter to move across the chamber in a sliding motion.