Abstract: A liquid sprayer with two side-by-side containers, an interconnecting bridge, and a nozzle insert positioned interiorly of the bridge. Alternatively, a two container piggyback liquid sprayer, a button actuator and a nozzle insert positioned interiorly of the button. One container is for product such as paint, etc., and the other container contains propellant. Very high product/propellant ratios are obtained. An intermediate portion of the nozzle insert has a venturi constriction with an internal propellant outlet orifice. Two product channels transverse to the nozzle insert longitudinal axis overlap the internal outlet orifice by approximately one-half. An outer frustoconical surface surrounds the internal venturi constriction outlet. An expansion chamber diameter is greater than the diameter of both the venturi constriction outlet orifice and the outer frustoconical surface adjacent this orifice.

Abstract: An attachment device for pressurized fluid dispensing containers enabling augmented directional dispensing through a somewhat flexible tube such as a plastic straw wherein the tube is supported at a position outwardly removed from its positioning vis-à-vis the actuation nozzle and preferably radially outward of the vertical plane formed by the container body wall.

Abstract: A manually operated spray device for spraying a liquid in a vessel comprises a cylinder member which includes an upper air cylinder and a lower liquid cylinder, an air piston slidably fitted in the air cylinder, and a suction pipe connected to the liquid cylinder within the vessel toward the bottom thereof. An actuator member is urged upwards and vertically movable relative to the cylinder member; and includes a hollow stem protruding upwards from the liquid cylinder and fitted at its center portion with the air piston, a press head fitted onto the upper portion of the stem, a nozzle hole opening at the side surface of the press head, and first and second passages merging with each other on the upstream side of the nozzle hole. The first passage is communicated with the air chamber on one side of the air piston, and the second passage is communicated with the liquid cylinder through the interior of the stem.

Abstract: An apparatus 10 for providing a continuous slow release of compressed gas includes a pressure vessel 12 and a restrictor tube 16. The restrictor tube 16 has a first open end 18 located inside the pressure vessel 12 and an opposite second open end 20 located outside the pressure vessel 12. The restrictor tube has a small diameter so as to restrict the flow of gas therethrough and out of the pressure vessel 12. Pressure vessel 12 is connected to a supply of compressed gas via a valve 28. When a volume of gas is transferred to the vessel 12 via valve 28, the gas enters the first opening 18, travels through the restrictor tube 16 and out of the second opening 20 to provide a slow continuous release of gas. In one embodiment, the pressure vessel 12 is incorporated in an insect trap 30. The trap 30 also includes a light source 48 of emitting light that attracts insects and a solution tray 44 for holding the liquid in which insects can become entrapped and drowned.

Abstract: A method of killing flying insects which method comprises spraying into the air in which insects are flying liquid droplets of an insecticidal composition, a unipolar charge being imparted to the said liquid droplets by double layer charging and charge separation during spraying, the unipolar charge being at a level such that the said droplets have a charge to mass ratio of at least +/−1×10−4 C/kg.

Abstract: An exemplary reusable mist sprayer according to the present invention includes a container with an opening which has double walls that is vacuum sealed between the walls to provide insulation from the atmosphere. The exemplary sprayer also includes a plunger to pump atmospheric air into the container. The plunger respectively has a hole and hollow opening at the opposing ends, the hole provides a path for atmospheric air to enter the interior space of the plunger. Enclosing the opening of the container is a removable dispenser mechanism having a protruding end adapted to receive the hollow opening of the plunger, and a flange adapted to removably seal the opening of the container. A one-way valve is associated with the protruding end, which only opens to allow the air within the interior space of the plunger to enter the container as the plunger is being pressed relative to the protruding end.

Abstract: A method for aerosol spraying liquid perfume products consists of simultaneously spraying liquid perfume products and/or components of liquid perfume products, having different odors, in the form of aerosol streams into a region being treated. Aerosol spraying nozzles are placed proximate each other. The simultaneous spraying of at least two components of a liquid perfume product is carried out, and during the spraying the axes of the aerosol streams of the components are positioned at an angle to each other that ensures intersection of the aerosol streams. The spraying is carried out into at least three regions in which at least three different odors are obtained. Wherein, the third odor is formed in a region located between the first and second regions at the intersection of the aerosol streams of the two initial liquid perfume products.

Abstract: A dispenser (1) for a liquid product (P) containing a film-forming polymer in the form of fine droplets, includes a container (2) containing the product (P) and at least one propellant gas (G). A valve (15) for dispensing the product, mounted on the container (2), includes a body (24) provided with a first chamber (28a) and a second chamber (28b), intercommunicating via a passage (p), movable element (16) for actuating the valve (15) being provided for the dispensing of the product, the first chamber (28a) being provided with a first additional gas intake opening (d1), and a second opening (d2) for the intake of the product in permanent communication with this product, the second chamber (28b) at least partially formed of the actuating element (16). In this valve, the delivery rate during the dispensing of the product (P) is determined by the cross-section of the passage (p).

Abstract: The present invention is intended to provide a dispenser structure for aerosol containers, which can control the discharge rate of aerosol and ensure satisfactory and safe dispensing of the aerosol while preventing the particle size of the dispensed aerosol from becoming too fine and preventing its excessive scattering which too fine particles would entail. Its structure is characterized in that it includes a dispenser (1) provided with a dispensing guide or first nozzle (11) communicating with a dispensing valve (2); a second nozzle (10) provided within the dispensing guide or first nozzle (11) and having a smaller dispensing port (10a) whose bore d is not more than 0.5 mm; and a larger dispensing port (1a) having a bore b of 0.8 to 3 mm and a length c of not less than 5 mm, formed within the dispensing guide or first nozzle (11) downstream, in the direction of dispensing from the second nozzle (10).

Abstract: The micro-atomizing device of the present invention creates high energy vortices. These high speed vortices are generated simultaneously and synchronously and then merged into a three dimensional force field. When the high energy vortices are brought together, a large vacuum is produced in a resultant stable vortex force field in a vortex accumulation zone. The high vacuum draws the fluid to be atomized through a delivery tube into the vortex accumulation zone. The high energy within the vortex accumulation zone either breaks up the fluid to be atomized into very small droplets or gasifies the fluid by the combination of high energy density cold boiling, shockwave generated ultrasound, and centripetal forces.

Abstract: A sprayer can convert the entire manual effort used to operate a manual pump into energy for spraying liquid. The sprayer has a liquid tank filled with a liquid, and an air tank having a pressurized air supply valve through which pressurized air can be introduced into the air tank. The air tank communicates with a float valve having a valve hole communicating with a spray nozzle and a hollow rod as the outlet of a manual pump. Pressurized air is introduced into the air tank through the pressurized air supply valve to increase the air pressure in the tank to a predetermined bias pressure. Then, the manual pump is operated to suck liquid in the liquid tank and supply the thus sucked liquid through the float valve into the air tank.

Abstract: The apparatus (1) for dispensing a sprayable product from an aerosol container includes a tube section (5) axially slidably mounted in a spray head (5). The spray head (3) has a feed passage (15), a connecting passage (14) and two nozzles (10,11 ) provided one above the other in the operating direction of the spray head (3), preferably oriented at an angle of 12.degree. to each other. By depressing the spray head the tube section (3) is moved downward in order to open a valve (7) in the aerosol container (2), whereby product can travel from the aerosol container (2) into the spray head (3) and from there into only the lower nozzle (1). By subsequently depressing the spray head (3) further downward against the force of a spring (6) the connecting passage (14) is moved upward relative to the spray head (3) in order to connect both nozzles (10, 11) with the feed passage (15). In that way either a single spray stream or two overlapping spray streams can be produced according to choice.

Abstract: An aerosol valve assembly(12) has a mounting cup(18) with an arcuate bottom portion(43) that distorts during pressurization to absorb some of the pressure shock to enable pressurization at higher levels and a valve stem(22) with grooves(25) that define passageways through a bore(21) within which the valve stem(22) is slideably mounted to eliminate leakage through the bore and to reduce back pressure to enable good flow rates at reduced pressures.

Abstract: Actuator system is used to dispense a defined volume of a formulation from a pressurized vial. The system houses the vial in a receptacle of a base section that also includes a dispensing section (e.g., a funnel) through which the formulation is sprayed. The system includes a sleeve that fits over at least the vial and that can be pumped by the user to controllably spray the formulation from the vial onto the host animal. For instance, in a preferred mode of operation, the user places the system onto the host at the desired treatment site and then pushes or pulls down on the sleeve. This actuates a valve mechanism on the vial to spray an amount of the formulation through the dispensing section onto the host.

Abstract: A dispenser head (2) includes a pivotable discharge stud (17). The outlet duct (15) thereof is bounded by an inner body (22) and is located laterally adjacent to the stud axis (11). Thereby the medium may be discharged in atomized form while being multiply deflected.

Abstract: An aerosol container has a straight cylindrical lower portion and a rounded tapered upper portion ending in a sharply tapered narrow shoulder section and a restricted neck with a rounded beaded top opening which has a smaller outer diameter than the shoulder. A valve assembly is received in the open end with the valve base seated in the space between the shoulder and bead diameters without extending beyond the shoulder. A valve cover fits over the base within the same perimeter to provide a generally streamlined configuration.

Abstract: An inexpensive pneumatically-operated apparatus is disclosed for spraying a broad range of viscous materials that atomizes the sprayable material without using propellant gases, and can be filled with bulk texture or other fluid coatings. A container removably locks onto the bottom of a sealing disk, consisting of a dip tube, an elbow, an air jet member, an equalization port, and an equalization tube. A cap is selectively united with the sealing disk and the container. The user fills the container with the sprayable material, attaches it to the sealing disk and cap, and connects to an external air supply device. A spray nozzle is used to adjust the type of spray, and the user holds up the apparatus as one would hold an aerosol spray can.

Abstract: A portable drywall texture sprayer includes a generally cylindrical tank filled with fluid drywall material, a tool connected to the tank through a set of hoses or lines, and an air supply connected to the tank. The set of hoses or lines includes a material line and a control line. The material line is connected between the tank and the tool such that there is material flow communication therebetween. The control line is connected between the tank and the tool such that there is air flow communication therebetween. An air tube is mounted within the tank and connected to the control line such that there is air flow communication therebetween. An air duct connects the air tube and the air supply such that there is air flow communication therebetween. The sprayer also includes a control orifice on the tool for controlling the air pressure within the tank.

Abstract: A liquid sprayer with two side-by-side containers, an interconnecting bridge, and a nozzle insert positioned interiorly of the bridge. Alternatively, a two container piggyback liquid sprayer, a button actuator and a nozzle insert positioned interiorly of the button. One container is for product such as paint, etc., and the other container contains propellant. Very high product/propellant ratios are obtained. An intermediate portion of the nozzle insert has a venturi constriction with an internal propellant outlet orifice. Two product channels transverse to the nozzle insert longitudinal axis overlap the internal outlet orifice by approximately one-half. An outer frustoconical surface surrounds the internal venturi constriction outlet. An expansion chamber diameter is greater than the diameter of both the venturi constriction outlet orifice and the outer frustoconical surface adjacent this orifice.

Abstract: A modular system for atomizing and delivering liquids to a substrate. The modular system comprises a liquid module, a means for providing an atomizing agent, a nozzle assembly and an actuator which is changeable between a first closed position and a second open position, for selectively allowing the atomizing agent to flow from the means for providing atomizing agent to the atomizing agent channel and for selectively allowing the liquid to flow from the cavity to the liquid delivery nozzle. The modular system atomizes liquids into a narrow distribution of particle sizes without the use of propellants or solvents. The modular system has replaceable liquid and atomizing agent modules. A method for atomizing liquids is also disclosed.

Abstract: A multiple hole, preferably a two hole spray dispensing system and sprayer in which colliding streams of viscous fluid are dispensed to the atmosphere are provided. The spray dispenser includes a reservoir for storing a fluid product. An aerosol or manually pressurized dispensing system preferably a hand held dispensing system may be used. Liquid is delivered from the reservoir under pressure to a delivery passageway. A nozzle having two or more outlets to the atmosphere is mounted to the delivery passageway to provide colliding streams of liquid. Baffles are provided to disrupt the flow of liquid in the stream prior to the collision of the streams to provide an improved spray pattern.

Abstract: A liquid sprayer with two side-by-side containers, an interconnecting bridge, and a nozzle insert positioned interiorly of the bridge. Alternatively, a two container piggyback liquid sprayer, a button actuator and a nozzle insert positioned interiorly of the button. One container is for product such as paint, etc., and the other container contains propellant. Very high product/propellant ratios are obtained. An intermediate portion of the nozzle insert has a venturi constriction with an internal propellant outlet orifice. Two product channels transverse to the nozzle insert longitudinal axis overlap the internal outlet orifice by approximately one-half. An outer frustoconical surface surrounds the internal venturi constriction outlet. An expansion chamber diameter is greater than the diameter of both the venturi constriction outlet orifice and the outer frustoconical surface adjacent this orifice.

Abstract: An automatic liquid spraying device includes a housing having a wall with a liquid outlet, a liquid container disposed within the housing, and a nozzle member which is installed on an upper end portion of the container and which has a front face formed with a spraying port, and a top surface formed with a groove. A driving unit includes a nozzle activating member, which can press automatically the nozzle member to move toward the container and which has an engagement portion, that engages fittingly the groove in the nozzle member when the nozzle member is pressed by the nozzle activating member to move relative to the container, thereby registering the spraying port in the nozzle member with the liquid outlet in the housing.

Abstract: An actuator assembly for an aerosol container provided with a stem. The actuator assembly controls the dispensing of an aerosol product from the container. The actuator assembly includes a base which supports an actuator within a throughbore of the base in a cantilevered fashion. The actuator is provided with a primary discharge orifice for discharging the product from the aerosol container in a first spray configuration. The actuator assembly includes a secondary actuator mechanism which, when in an inactive position, allows the primary discharge orifice to control solely the discharge of the product to be dispensed from the aerosol container. The secondary actuator mechanism, when in a second active position, communicates with the primary discharge orifice and controls the spray configuration of the product to be dispensed as it is dispensed from the aerosol container. The secondary actuator mechanism can either be pivotally attached to the actuator assembly or completely removable therefrom.

Abstract: An apparatus and method for aerosolizing and dispensing powders utilizing the forces of pressurizing and depressurizing gas loaded into powder agglomerates located in an enclosed powder chamber. Methods include administering peptides, genes, vitamins, and polymers into the peripheral lung. Also describes powder supply apparatus and method for single dose and repetitive applications.

Abstract: The present invention provides a spray nozzle with both desirable aesthetic and functional attributes. The spray nozzle includes a central orifice and a plurality of blind recesses concentrically disposed around the central orifice, as well as an annular channel connecting all of the blind recesses. The recesses and the channel each individually provide desirable aesthetic properties, while in combination they each reduce the likelihood of product residue buildup in the other. The recesses interrupt the smooth walls of the channel to divert liquid product out of the channel before it can dry out.

Abstract: A spray actuator which has an inlet which communicates with a discharge orifice outlet via a passageway and a discharge cavity. The discharge cavity accommodates a central post therein which supports a plurality of axial fins that may be each provided with stop shoulder. An insert member, carrying a discharge orifice, is received within the discharge cavity and engages with the support fins and the stop shoulders. The insert member is provided with an annular lip which has an interference fit with the inner side wall, defining the discharge cavity, to retain permanently the insert member within the discharge cavity. An end face of the side wall of the insert member abuts against the stop shoulders to prevent overinsertion of the insert member into the discharge cavity and thereby prevent inadvertent deformation or crushing of the mechanical break-up. An end face of the central post has a mechanical break-up molded therein which impart a tangential spin to pressurized product as the product flow therethrough.

Abstract: An adjustable air brush for spray paint cans comprised of a tube portion having an open internally threaded first end and a closed second end with an intermediate extent therebetween. The tube portion has a small tube extending orthogonally downward from an interior surface thereof. The small tube is adapted for coupling with a nozzle hole of a spray can. The tube portion has a pressure knob secured to a top portion thereof. The pressure knob has a tube extending within the tube portion to couple with the small tube to release paint from within the spray can. A spray tip portion removably secures to one of the open end portions of the tube portion. An adjustable knob portion secures to an opposing end portion of the tube portion. The adjustment knob regulates the amount of paint through the tip portion.

Abstract: An aerosol spray can or bottle is described incorporating a dispensing valve for blending a liquid product contained within a compressible compliant inner container that is suspended within an outer vessel whose interior is pressurized with air or other suitable gas. In each of the embodiments described, the structure for suspending the compliant container for the product includes a socket in which a valve body member and first and second seals are contained. A push-button having a spray nozzle is affixed to a spring-biased plunger and when the push-button is not being depressed, the first seal member precludes flow of the pressurizing gas to a mixing chamber and second seal member blocks the flow of the liquid product into the mixing chamber. Depression of the push-button operates to displace the first and second valves permitting a portion of the pressurizing gas to mix with the product to be dispensed in the mixing chamber before exiting the spray nozzle.

Abstract: A hollow body having a nozzle opening (19) to discharge fluid as a jet or spray; the body comprising a first part having an inlet (12a) to admit fluid under pressure into the first part, and a second part (16) movable relative to the first part and said first and second parts are relatively movable from an abutting position in which they define therebetween the nozzle opening and a fluid feed passage (18) in the body and leading to the nozzle opening, and a cleaning position in which the fluid feed passage is split open longitudinally and the nozzle opening is split open to expose the nozzle and passage defining surfaces of said parts, for cleaning.

Abstract: An aerosol spray can or bottle is described incorporating a dispensing valve for blending a liquid product contained within a compressible compliant inner container that is suspended within an outer vessel whose interior is pressurized with air or other suitable gas. In each of the embodiments described, the structure for suspending the compliant container for the product includes a socket in which a valve body member and first and second seals are contained. A push-button having a spray nozzle is affixed to a spring-biased plunger and when the push-button is not being depressed, the first seal member precludes flow of the pressurizing gas to a mixing chamber and second seal member blocks the flow of the liquid product into the mixing chamber. Depression of the push-button operates to displace the first and second valves permitting a portion of the pressurizing gas to mix with the product to be dispensed in the mixing chamber before exiting the spray nozzle.

Abstract: The two-channel top device for a spray can for making two different spray patterns is provided with an operating rod (11) having two connecting ducts (21,22) associated with the respective spray patterns, a manually-operated spray activating button (14) arranged on the operating rod (11) which is provided with two different nozzles (15,16) for the respective spray patterns, the connecting ducts (21,22) being connected with the respective nozzles and having respective inner openings at different axial positions on the operating rod (11) and a self-locking sealing member (29) slidably mounted on the operating member and movable between stops in the spray can.

Abstract: An aerosol actuator is provided having an inner actuator chamber, an inner actuator chamber outlet by which the composition to be dispensed may exit the inner actuator chamber, and a stem piece channel by which the fluid to be dispensed may enter the inner actuator chamber. The inner surface of the inner actuator chamber is mathematically continuous. The mathematically continuous arrangement minimizes nozzle blockage in the actuator.

Abstract: A multiple hole, preferably a two hole spray dispensing system and sprayer in which colliding streams of viscous liquid are dispensed to the atmosphere are provided. The spray dispenser includes a reservoir for storing a fluid product. An aerosol or manually pressurized dispensing system preferably a hand held dispensing system may be used. Liquid is delivered from the reservoir under pressure to a delivery passageway. A nozzle having two or more outlets to the atmosphere is mounted to the delivery passageway to provide colliding streams of fluid.

Abstract: A spray tube for a pressurized dispenser is secured within an orifice of a spray nozzle using a coiled retention member which is selectively rotated about the spray nozzle to engage the spray tube between spaced turns of the coiled member.

Abstract: A device for applying medication fluid on mucus membrane in interior of body cavities has a manually actuatable pump element mountable on a medication supply container for discharging a medication fluid and having an outlet, an insertion tube having one end connected with the outlet and provided with a through going longitudinal opening, a distributor body connected with an opposite end of the insertion tube and having an outer shape and a volume to correspond to a body cavity to be treated, the distributor body having a plurality of outlet openings distributed over its outer surface and communicating through an interior of the distributor body with the insertion tube so that a medication fluid supplied under pressure is a discharged from the outlet openings over an outer surface of the distributor body.

Abstract: An apparatus for use by a user to entertain the user and to dispense a fragrance includes a container made of plastic which contains a colorless or lightly tinted liquid and about 2 to 6 beads of hard plastic or glass. The user shakes the container to produce a pleasing vibration and sound and actuates a spray pump to spray the liquid onto bedding or other household objects to spread a fragrance which is contained in the liquid.

Abstract: The invention relates to a head for dispensing a liquid product in the form of an aerosol. The dispensing head includes a push-button, at least two ducts housed in the push-button and at least two nozzles provided in the push-button. At least part of each duct is radial, and another part of the duct communicates with the nozzle and is orientated parallel to an axis of the nozzle. The nozzles are arranged so that the sprays leaving each nozzle strike each other in order to provide a single and homogeneous spray. The invention also relates to a dispenser equipped with such a dispensing head.

Abstract: A simple, inexpensive apparatus for dispensing powdered or granulated material includes a container, a tight-fitting, removable container top, and a conventional blower, such as a leaf blower. The intake of the blower is connected to a container outlet tube. The two described embodiments include arrangements of air inlet orifices, air inlet tubes, and air control doors to control the concentration of the air/material mixture discharged from the blower discharge nozzle.

Abstract: A spray dispenser for dispensing and atomizing viscous liquids and a system for dispensing same is provided. The dispenser includes a reservoir for storing a viscous liquid. The viscous liquid is delivered under pressure from the reservoir to a delivery passage. A nozzle is provided with two opposed outlets to the atmosphere which provides intersecting streams of viscous liquid during dispensing.

Abstract: A nozzle for spraying a fluid comprises an outlet duct (3, 4) opening out into a swirling chamber (5) in the center of an annular surface (10), the chamber being closed by an end wall (6) which is pierced by an outlet orifice (7) and which includes an inside face (6a) provided with swirling grooves (80. The swirling chamber (50 is partially filled by a core (9), the core leaving at least one lateral passage (11) empty, putting the swirling groove into communication with the outlet duct. The spray nozzle also includes a valve adapted to close the outlet duct.

Abstract: A hollow body having a nozzle opening to discharge fluid as a jet or spray; the body comprising a first part having an inlet to admit fluid under pressure into the first part, and a second part movable relative to the first part and said first and second parts are relatively movable from an abutting position in which they define therebetween the nozzle opening and a fluid feed passage in the body and leading to the nozzle opening, and a cleaning position in which the fluid feed passage is split open longitudinally and the nozzle opening is split open to expose the nozzle and passage defining and abutting surfaces of said parts, for cleaning.

Abstract: A dispenser includes a valve for dispensing a liquid product to be dispensed in the form of an aerosol with the aid of a propellent gas. The valve is mounted on a container which contains the liquid and is equipped with a hollow operating stem including a product inlet and a product outlet, a push-button for actuating the valve via the stem, first and second nozzles provided in the push-button, and first and second ducts, respectively linking the first and second nozzles to the outlet of the stem. The first nozzle is a nozzle which is capable of delivering a spray having a mechanical effect and the second nozzle is a nozzle which is capable of delivering a spray of product. The dispenser is used especially for spraying hair lacquer.

Abstract: A nozzle protector for an aerosol spray can of the type having in a top portion an annular bead that surrounds a nozzle and defines an inwardly facing groove shields the nozzle from impacts. The protector has a retaining sleeve portion having an upper part adapted to lie radially within the bead, and a pair of snap-in retaining rib portions projecting outwardly in generally opposite directions from the sleeve portion and adapted to be captured in the groove of the can top to securely attach the protector to the can. A pair of nozzle-protecting side wall portions adjoin the upper edge part of the retaining sleeve portion and are configured to define a first opening shaped and dimensioned to permit a spray to be ejected from the nozzle and a second opening shaped and dimensioned to permit a finger of a user to be received inwardly of the wall portions and engage the nozzle.

Abstract: A fluid dispensing tube with fluid deflection surface that attenuates accumulation of solidified sprayed fluid. The fluid deflection surfaces can be used for mechanically breaking-up a fluid to enhance sprayability and uniformity or to create a fan spray, or both. The inlet end of the fluid dispensing tube can be fluidly connected to a container of fluid.

Abstract: A method and system for dispensing a nonaqueous foam under pressure from a container wherein the valve of the container is pointed above the horizontal plane.

Abstract: An aerosol inhalation device suitable for use in association with a pressurized medicament container having a valve stem has a spray head adapted to receive the valve stem. The spray head has an outlet orifice of uniform diameter which is provided with a spout to prevent blockage of the spray head. The device is especially useful in the administration of hygroscopic medicaments, for example sodium cromoglycate or nedocromil sodium.

Abstract: An actuator for a spray valve is provided which includes an actuator head and spray producing body positioned within the head. The actuator head includes a mechanism for connecting the head to a spray valve and transfer channel for receiving a pressurized fluid from the spray valve. The transfer channel is formed with a terminal area surrounding an outlet orifice of the channel. The spray producing body is positioned against the terminal area and has a front wall distant therefrom. The spray producing body features a swirl chamber situated adjacent the outlet orifice, a first channel downstream from the swirl chamber, a second channel of narrower diameter and downstream from the first channel, an expansion orifice situated further downstream and at least four unconnected dead-ended recesses formed into the front wall and surrounding the expansion orifice.

Abstract: According to the invention, a hand held sprayer is provided. Fluid flows from a reservoir to a delivery passageway upon pulling or pressing an actuator such as an aerosol actuator or button, a trigger or finger pump button. A nozzle having an inlet and an outlet is rotatably mounted to the outlet of the delivery passageway. The nozzle rotates about a rotation axis through the center of the discharge end of the nozzle. The actuator of the hand held sprayer is interconnected to the rotatably mounted nozzle to provide rotation of the nozzle simultaneously with the dispensing of the liquid from the reservoir to the atmosphere. The nozzle rotates from about 90.degree. to 360.degree. about the axis of rotation. The resulting hand held sprayer is capable of dispensing viscous liquids having a viscosity of over 60 cps and delivering a desirable round spray pattern.

Abstract: Particles of spray solution are given with an electrostatic charge by applying voltage of 300 to 800 V thereon as the solution passes through the tip of the spray nozzle of an electrostatic spray dispenser.