Abstract: Golf club heads are releasably engaged with shafts so they may be readily interchanged and/or so that the shaft orientation with respect to the club head can be readily changed. Assemblies for connecting the club head and shaft may include a shaft adapter and a head adapter. The shaft adapter may have an exterior surface extending along a first axis and a bore having a cross-sectional shape along a second axis configured to attach to a shaft member. The second end of the shaft adapter may have a cross-sectional shape of a regular polygon or a cross-sectional shape defined by splines. The head adapter has a first end and a second end along a first axis and a bore having either a shape of a regular polygon or a cross-sectional shape defined by splines along a second axis that is shaped to receive the second end of the shaft adapter in a plurality of orientations.

Abstract: Golf club heads are releasably engaged with shafts so they may be readily interchanged and/or so that the shaft orientation with respect to the club head can be readily changed. Assemblies for connecting the club head and shaft may include a shaft adapter and a head adapter. The shaft adapter may have an exterior surface extending along a first axis and a bore having a cross-sectional shape along a second axis configured to attach to a shaft member. The second end of the shaft adapter has a cross-sectional shape of a regular polygon. The head adapter has a first end and a second end along a first axis and a bore having a shape of a regular polygon along a second axis that is shaped to receive the second end of the shaft adapter in a plurality of orientations.

Abstract: A cartridge for a handheld electrohydrodynamic (EHD) spraying device and a spraying device incorporating the cartridge. The cartridge is disposable, and can contain therapeutic products. The device includes a wetted lead screw with a compliant seal, where the placement of the seal relative to the screw inhibits leakage during both cartridge use and storage. A frame disposed within the cartridge acts as a load-transferring mechanism for the weight of the cartridge to a handle of the spraying device.

Abstract: Golf club heads are releasably engaged with shafts so that the club heads and shafts can be readily interchanged and/or so that the shaft position with respect to the club head can be readily changed. Golf clubs are provided that have spherical releasable connections between the golf club head and the golf club shaft along with head/shaft position adjusting features to allow interchange of shafts and heads and to allow modification of the head/shaft positioning properties. Assemblies for connecting the club head and shaft may include: a shaft adapter, a shaft retainer, and a hosel insert located within an interior chamber of the club head. The club head and shaft may be changed by releasing the securing system and exchanging the original parts with different parts. Furthermore, the shaft adapter may be rotated within the hosel insert to create different angles from the shaft so as to allow adjustment of the shaft position with respect to the club head.

Abstract: A cartridge for a handheld electrohydrodynamic (EHD) spraying device and a spraying device incorporating the cartridge. The cartridge is disposable, and can contain therapeutic products. The device includes a wetted lead screw with a compliant seal, where the placement of the seal relative to the screw inhibits leakage during both cartridge use and storage. A frame disposed within the cartridge acts as a load-transferring mechanism for the weight of the cartridge to a handle of the spraying device.

Abstract: Golf club heads are releasably engaged with shafts so that the club heads and shafts can be readily interchanged and/or so that the shaft position with respect to the club head can be readily changed. Assemblies for connecting the club head and shaft may include: a shaft adapter, a shaft retainer, and a club head having an interior chamber. The club head and shaft may be changed by releasing the securing system and exchanging the original parts with different parts. Furthermore, the shaft may be bent or otherwise extend at an angle from the shaft adapter so as to allow adjustment of the shaft position with respect to the club head.

Abstract: A cartridge for a spraying device, as well as a spraying device incorporating the cartridge. The cartridge includes fluid reservoir a wetted lead screw and piston that upon rotation can pressurize a fluid within the reservoir. A self-actuating seal is placed between the piston and the lead screw, and extends into the reservoir such that the pressurized fluid applies a compressive force to the outer surface of the seal, causing the seal to clamp down on the lead screw. Such sealing is especially beneficial in electrohydrody?amic spraying devices and electrostatic spraying devices.

Abstract: The invention is directed to devices and methods for electrohydrodynamic (EHD) aerosolization of liquids utilizing a dissociated discharge electrode and an electric field shield disposed between the nozzle and the discharge electrode. Preferred embodiments are designed as inhalers suitable for administration of therapeutic compounds to the respiratory tract of a patient, preferably the lungs.

Abstract: A cartridge for a handheld electrohydrodynamic (EHD) spraying device and a spraying device incorporating the cartridge. The cartridge is disposable, and can contain therapeutic products. The device includes a wetted lead screw with a compliant seal, where the placement of the seal relative to the screw inhibits leakage during both cartridge use and storage. A frame disposed within the cartridge acts as a load-transferring mechanism for the weight of the cartridge to a handle of the spraying device.

Abstract: An improved Electrohydrodynamic (EHD) nozzle particularly suitable for a handheld pulmonary aerosol inhaler increases the consistent and efficient dispensing of therapeutic liquids by reducing or eliminating wetting through shielding of discharge electrodes. Some versions further eliminate wetting while enhances neutralization of the aerosol through presentation of a corona wind of ions annularly surround the aerosol. Incorporation of improved liquid distribution with consistent pressure drops to each EHD nozzle tip allows horizontal dispensing, and by using dielectric nozzle tips with low surface energy to thereby avoid wicking between dispenses and to advantageously reduce achievable particle size when dispensing. Some versions feature enhanced snap-fit assembly and other manufacturability advantages. One of the unique features of the EHD nozzles is achieved high dose rate (microliters/minute) with low wetting and small particle size (1.0-5 microns), although these properties tend to be mutually exclusive.

Abstract: A electrohydrodynamic aerosol sprayer wherein a gas flow deflector is used for creating a gas flow past the spray nozzle to stabilize the Taylor cone and to transport at least a portion of the aerosol away from the region downstream of the spray nozzle. This stabilization of the cone and transport of aerosol improves the droplet size and distribution and may also reduce the deposit of droplets on the internal components of the device.

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.

Abstract: A lawn and garden tool, such as a string trimmer, includes a lower housing, an upper housing having one or more axial channels interconnected with one or more circumferential channels disposed on an interior surface thereof and a shaft connected between the upper housing and the lower housing. A boss is located on an exterior surface of the shaft and is disposed within the channels such that the boss is capable of traveling back and forth between the interconnected axial and circumferential channels. Movement of the boss within one of the axial channels telescopes the shaft while movement of the boss within one of the circumferential channels rotates the shaft and, thereby, rotates the lower housing with respect to the upper housing. The shaft may be moved from a locked position upon actuation of a push-button mechanism located on the upper housing of the string trimmer.

Abstract: Apparatus for adjusting a first member relative to a second member comprises a button with two sets of teeth and movable between first and second positions. When in the first position, both sets of teeth engage sets of teeth carried by the first and second members to prevent relative movement of the first and second members. When in the second position, one of the sets of teeth carried by the button disengages one of the sets of teeth carried by one of the first and second members to allow relative movement thereof.