Abstract: Aerosol spray devices (100) may include one or more actuators (130) located on the sides or on the rear of the device wherein actuation of the one or more actuators disperses product from a container in communication with the spray device. A selector mechanism (150) may be used to toggle between an “on” and an “off” position for the one or more actuators.

Abstract: Aerosol spray devices (100) may include one or more actuators (130) located on the sides or on the rear of the device wherein actuation of the one or more actuators disperses product from a container in communication with the spray device. A selector mechanism (150) may be used to toggle between an “on” and an “off” position for the one or more actuators.

Abstract: A cartridge for an electrohydrodynamic spraying device and a spraying device incorporating the cartridge, where the cartridge includes a locking mechanism. The cartridge is disposable, and can contain therapeutic or other fluid products. The fluid is delivered from the cartridge by a shaft-mounted piston, while the locking mechanism can be selectively engaged with the shaft such that in the engaged position, the locking mechanism prevents the piston from advancing by inhibiting movement of the shaft. When the locking mechanism is disengaged from the shaft, the shaft and piston are free to move, such as in response to a power source in the spraying device. The selective engagement between the locking mechanism and the shaft during periods of inoperability of the spray device prevents the buildup of fluid pressure in the cartridge that otherwise could blurt out upon subsequent operation.

Abstract: A cartridge for an electrohydrodynamic spraying device and a spraying device incorporating the cartridge, where the cartridge includes a locking mechanism. The cartridge is disposable, and can contain therapeutic or other fluid products. The fluid is delivered from the cartridge by a shaft-mounted piston, while the locking mechanism can be selectively engaged with the shaft such that in the engaged position, the locking mechanism prevents the piston from advancing by inhibiting movement of the shaft. When the locking mechanism is disengaged from the shaft, the shaft and piston are free to move, such as in response to a power source in the spraying device. The selective engagement between the locking mechanism and the shaft during periods of inoperability of the spray device prevents the buildup of fluid pressure in the cartridge that otherwise could blurt out upon subsequent operation.

Abstract: A cartridge for an electrohydrodynamic spraying device and a spraying device incorporating the cartridge, where the cartridge includes a locking mechanism. The cartridge is disposable, and can contain therapeutic or other fluid products. The fluid is delivered from the cartridge by a shaft-mounted piston, while the locking mechanism can be selectively engaged with the shaft such that in the engaged position, the locking mechanism prevents the piston from advancing by inhibiting movement of the shaft. When the locking mechanism is disengaged from the shaft, the shaft and piston are free to move, such as in response to a power source in the spraying device. The selective engagement between the locking mechanism and the shaft during periods of inoperability of the spray device prevents the buildup of fluid pressure in the cartridge that otherwise could blurt out upon subsequent operation.

Abstract: A method and device are provided for providing sensory cues, signals, or indicators regarding the status of electrohydrodynamically spraying a material, including power-on status of an electrohydrodynamic spray device, active electrohydrodynamic spray status, and material status within the electrohydrodynamic spray device. In particular, audible, tactile, or intermittent visible signals indicate active electrohydrodynamic spraying, audible, tactile, or visible signals indicate power-on status of the electrohydrodynamic spray device, and sensory signals indicate the status of other operationally-related variables, including the rate of electrohydrodynamic spray, time increments, which may be correlated with electrohydrodynamic spray flowrates, and material supply levels.

Abstract: A method for delivering an aerosol, especially an aromatic aerosol, comprising the steps of contacting a capillary wick, comprising an EHD comminution site, with a liquid source, whereby at least a portion of the liquid transports to the EHD comminution site; applying a voltage to the liquid within the capillary wick at a location spaced apart from the liquid source and proximate the EHD comminution site; and applying a ground reference at a location external to the EHD comminution site, wherein at least a portion of the liquid EHD comminutes to form a spray having a generally-consistent flowrate and a device therefor.

Abstract: A string trimmer head and head assembly include a plurality of arms which connect the head to a hub member. One or more flails are captured between the head and the hub member and extend outwardly into a cutting plane.

Abstract: A string trimmer includes a wire guard assembly which retains a wire guard and debris shield on a motor housing. The wire guard is retained in a pair of grooves in the motor housing to capture the debris shield between the wire guard and an upper portion of the motor housing. The wire guard is locked in place by locking members on the bottom of the shield, thereby substantially permanently connecting the shield to the motor housing without the necessity of additional parts.