Abstract: An ultrasonic nozzle includes an atomizing surface for producing an atomized liquid spray; a liquid-feed passageway for supplying the process liquid to the atomizing surface, the passageway having a first diameter section and a second fluidly connected smaller diameter section, with a shoulder defined therebetween; an internal shut-off assembly for preventing the supply of process liquid to the atomizing surface, the shut-off assembly including a shut-off rod slidably positioned within the passageway and having a sealing end adapted to cooperate with the shoulder to prevent the supply of process liquid to the atomizing surface, an actuator piston connected with the opposite end of the shut-off rod and slidable within a cylinder bore that is in fluid communication with the passageway, and a valve actuator for slidably moving the piston and shut-off rod in the passageway between a first closed position in which the supply of liquid to the atomizing surface is prevented and a second open position in which the su

Abstract: A plural component air spray gun is characterized by a spray head assembly that has a pair of hemispherically shaped fluid outlet orifices, the straight sides of which are facing, parallel and separated by a relatively thin wall. Each orifice receives a respective one of two liquid materials delivered through associated liquid supply passages, and the passages are inclined so that streams of liquid emitted from the orifices come together a short distance beyond the orifices. Air emitted from an atomizing air orifice surrounding the two fluid orifices mixes and breaks up the liquid material streams into an atomized conical spray. To form the conical spray into a fan-shaped pattern, an air cap directs air jets against opposite sides of the spray.

Abstract: An improved spray nozzle for use with air atomizable liquids wherein the spray pattern created by the atomizing nozzle may be adjusted from a circular pattern to a flat pattern or alternatively to an open oval. The open end faces in preselected directions. The adjustments are capable of occurring during the continuous operation of the nozzle.

Abstract: A spray gun including a turbine mechanism for reducing the turbulence of fanning air to more effectively control the shaping of a conical spray pattern. A spiral flow of fanning air is created by the turbine mechanism. The amount of pressurized air flowing through the turbine mechanism is controlled by a valve mechanism to provide a greater or lesser amount of fanning air. The improved spray gun is particularly useful in paint spray systems wherein air having a flow rate in excess of 5 CFM and a delivery pressure of less than 15 psi over atmospheric is communicated to the spray head of the spray gun. In one embodiment, the turbine and valve mechanisms include first and second sets of circumferentially-spaced inclined vanes, respectively, which cooperate to create the spiral flow of air. The valve mechanism includes an annular valve member which supports the second set of vanes. The turbine mechanism includes a turbine member which supports the first set of vanes.

Abstract: A device for gas atomising a liquid stream, such as a stream of molten metal or metal alloy, has an atomising device including, for example, an annular opening for receiving the stream. The atomising device is arranged for applying atomising gas to the stream so as to form a spray of atomised particles. At least a part of the atomising gas, and preferably all, is applied by means movable relative to the stream whereby movement is imparted to the spray to achieve improved uniformity or control of deposition by moving the spray either by moving the atomising device with a symmetric gas flow field relative to the stream or by oscillating or rotating a rotor mounted within the atomising device and arranged to produce an asymmetric gas flow field.

Abstract: The invention relates to an apparatus and method of controlling the generation of somewhat-to-highly viscous fluid fibers, droplets and combinations of the same, including hot melt adhesive and other fluids, that comprises, spraying a stream of such pressurized fluid through a fine orifice and along a predetermined direction in free flight, and simultaneously funneling a cone of pressurized air symmetrically about and against said stream, intersecting the same in its free flight below said orifice to control the nature, dimensions and pattern of the resulting fluid coating on surface disposed therebelow. Supplemental air controls are also providable for contouring and other effects.

Abstract: A spray gun for producing an atomized liquid spray jet is provided with fan-shaped shaping air jets which impinge the atomized liquid spray jet to form a fan-shaped atomized liquid spray jet. The shaping air jets are supplied pressurized air which is controlled separately from the atomizer air. The fan-shaped shaping air jets are formed by intersecting air jets, deflected air jets, or air jets emitted from a slotted nozzle.

Abstract: An electrostatic powder spray gun comprises a powder channel for a powder-air mixture to be sprayed, the powder channel extending through a pistol tube and discharging axially forward at the forward end of the gun through an annular opening which is coaxial with the longitudinal axis of the pistol tube. An auxiliary air line extends through the pistol tube and discharges at the forward end and is constructed in such a manner that the auxiliary air line discharges axially forward as an annular opening coaxial with the annular powder opening, in particular radially and slightly in front of the annular powder opening. An air deflecting member is arranged in front of the auxiliary air annular opening and is seated at the free end of a rod which extends centrally through the pistol tube and is axially displaceable therein. The rod is mechanically coupled to the trigger of the spray gun so that the air deflecting member can be adjusted from the trigger.

Abstract: In a spray gun for fluids, such as paint, pressurized air is brought from a hollow handle to a hollow barrel while the fluid is brought radially into a fluid nozzle in the barrel. The fluid is expelled through a port in the center of the fluid nozzle at the end of the barrel and the pressurized air is expelled out the end of the barrel through openings in an air cap to shape the fluid spray. A cylindrical cartridge, which includes the fluid nozzle and a restricter plug, is movable along the inside of the barrel to change the size and/or shape of the spray and at the same time, control the amount of air to the air cap and the amount of expelled fluid to keep the air-to-fluid ratio substantially unchanged.

Abstract: Coking of the hot external face of fuel nozzles operating in the combustor of a gas turbine engine is reduced by controlling air discharging from the nozzle face in a manner to provide a recirculation zone spaced away from the nozzle face a distance effective to substantially reduce coking and yet maintain a stable flame front in the combustor.

Abstract: A rotating spraying type coating apparatus having a spraying head attached to a rotating shaft of a rotating drive device, a paint supply passage connected to the proximal end of the spraying head, and a paint radiating portion formed at the distal end of the spraying head to thereby spray paint particles from the paint radiating portion. The apparatus is provided with a partition member which is disposed around the outer periphery of the spraying head in opposing relation to the latter, and at least a pair of air outlet ports which are disposed in such a manner that air is jetted out forwardly from the air outlet ports toward the outer peripheral surface of the partition member. Thus, the direction of spray of paint particles from the paint radiating portion is controlled by means of the jetted air, and it is possible to obtain elliptical and dumbbell-shaped spray patterns which cannot be obtained by the conventional rotating spraying type coating apparatuses.

Abstract: A rotating spraying type coating apparatus which includes a rotating drive device having a rotary shaft, a spraying head attached to the rotating drive device, a paint supplying passage connected to the base end of the spraying head, a paint radiating part formed at the top end of the spraying head, and at least one pair of air jetting holes provided on both sides of the spraying head. Also provided is a wash shroud for collecting washing agent radiated from the paint radiating part of the spraying head. This apparatus can provide a wide variety of coating patterns.

Abstract: A device for gas atomizing a liquid stream, such as a stream of molten metal or metal alloy, has an atomizing device including, for example, an annular opening for receiving the stream. The atomizing device is arranged for applying atomizing gas to the stream so as to form a spray of atomized particles. At least a part of the atomizing gas, and preferably all, is applied by means movable relative to the stream whereby movement is imparted to the spray. This movement leads to improved uniformity or control of deposition.

Abstract: A spray guard for a paint spray gun is provided that will deliver a shroud of pressurized air about a paint spray issuing from the spray nozzle to eliminate over spray of the paint and create a smoother finish to surface sprayed. Modifications are provided that include a flexible deflector with a closure that mates with holes in the spray nozzle and also include removeable spray fittings for the nozzle.

Abstract: An air assisted hydraulic atomizing spray gun for liquid coating materials is characterized by an adjustable air/fluid turn on timing sequence which allows the air to be selectively turned on before, at the same time as, or after the fluid.

Abstract: A paint spray gun is provided with a means of adjustably controlling fanning of the spray which may be regulated independently of the rotative position of the air cap. A valve member axially shiftable by an adjustment screw adjustably controls the flow of air to fanning control ports in the air cap without interfering with the flow of atomizing air to the paint spray nozzle.

Abstract: A paint spray gun having a plastic nozzle body with a separate plastic nozzle tip universally mounted on the nozzle body to align the tip in a central orifice in a plastic air cap.

Abstract: A spray gun for applying a film to a workpiece has a spray head provided with an annular nozzle designed to discharge material which is to undergo pneumatic atomization. A second annular nozzle surrounds the pneumatic material discharge nozzle and is designed to discharge atomizing air for pneumatic atomization of the material issuing from the pneumatic material discharge nozzle. The spray head is further provided with an additional material discharge nozzle designed to discharge material which is to undergo hydrostatic atomization. The hydrostatic material discharge nozzle is disposed centrally of, and is surrounded by, the pneumatic material discharge nozzle. The hydrostatic material discharge nozzle forms a first spray of hydrostatically atomized material while the annular nozzles form a hollow conical second spray which surrounds the first spray when both sprays are on simultaneously.

Abstract: An improved air atomizing spray gun accommodates selective control over flows of air for atomizing liquid coating material into a conically-shaped spray and for forming the spray into a fan-shaped pattern. In one arrangement of the gun structure, respective supplies of atomizing and fan-shaping air are connected to the gun and separately coupled to atomizing and fan air outlet orifices. In another arrangement, only the supply of atomizing air is connected to the gun, and a valve on the gun adjustably diverts a portion of the atomizing air for fan-shaping purposes.

Abstract: A conical sheath of air emitted from a vortex plenum adjacent the outer edge of a rotating bell spray apparatus is effective to optionally help atomize the coating material, and to carry the atomized material forwardly toward a confluence on the axis of the rotating head where tubulent mixing of the particles occurs, and the particles are sprayed forwardly for deposition in a uniform thickness film of a uniform population mix of particles sizes. Forward air and tangential air components are admitted to the plenum and are independently controlled so that different spray characteristics are obtained, the tangential air providing a swirl moment to the conical air sheath which enlarges the size of the deposited film pattern. The forward velocity determines the atomization ability of the sheath air and the particle velocity in the spray pattern. Electrostatic and non-electrostatic operations are intended.

Abstract: A liquid dispensing gun wherein a spray pattern control valve is located internally of the gun. The spray pattern control valve is in the form of a two position air flow valve movable between a first position wherein low air flow is supplied through the valve to a second position wherein high air flow is provided through the valve. The valve has two adjustable stops operable to fix the low air flow and the high air flow positions of the valve. Manual pressure on the stem of the valve controls movement between the two positions.

Abstract: A build-up spraying apparatus is disclosed which is capable of positionally adjusting the spreading rate of build-up metal powder on an article along the spreading direction to satisfactorily carry out partial or local build-up as well as uniform build-up as desired. The build-up spraying apparatus includes a fluid control device for spreading build-up metal powder having a pair of control gas injection nozzles formed at the both sides of the interior thereof and a control gas switching cycle setting means for supplying two systems of control gas to the fluid control device at a predetermined cycle to positionally control the spreading rate of build-up metal powder in the spreading direction. The apparatus also includes at least one heating burner body for heating build-up metal powder ejected from the fluid control device, the heating burner body being adapted to vary the amount of heat according to the difference in injection rate of build-up metal powder in the spreading direction.

Abstract: A paint sprayer is disposed substantially on the axis of an almost closed (omega-shaped) loop formed by a transporter. Its axis of rotation is aligned so that the area in which the sheet of atomized paint it produces intersects the cylinder defined by the axes of the objects to be painted lies in an area contained between but reaching as far as circles delimiting the part-cyclindrical surface over which the objects move. An annular nozzle connected to a source of pressurized gas is disposed behind a rotating bowl of the sprayer so that an annular gas jet is directed onto the initial part of the thin sheet of atomized paint. The pressure of the gas fed to this nozzle is modulated periodically so that the aforementioned intersection area reaches the delimiting circles alternately and periodically.

Abstract: The method consists in that the liquid or solid particles being dispersed are brought in contact with a gas stream, which then conveys said particles till their collision with an obstacle, whereas said gas stream is subjected to symmetrical compression with gas streams whose discharge velocity 1.2 to 20 times that of the gas stream that conveys liquid or solid particles, and said symmetrical gas streams are so directed as to provide their homocentric convergence at an angle of from 30.degree. to 90.degree. on the obstacle.The method enables production of liquid and solid aerosols with a degree of dispersity below 1 .mu.m within a narrow range of particle sizes.

Abstract: A spray head for use with conventional air-atomizing spray equipment is disclosed which has spray-forming means that includes a secondary atomization annulus which provides improved atomization of liquid materials and which is especially suitable for spray devices having electrostatic induction charging means. The secondry annulus minimizes deposition on the spray head of particles electrically charged with a polarity opposite that of components of the spray head and provides re-atomization of sprayable material which collects on the walls of the nozzle.

Abstract: Method and apparatus for providing an electrostatically charged, airless, round vortex spray of liquid in which spray pattern irregularities may be eliminated. In addition to a central nozzle for forming the round vortex spray there is provided an annular nozzle for forming an auxiliary air vortex which is imparted with whirling motion in a direction opposite to that of the round spray of liquid. The air flow rate for the auxiliary air vortex is set above a value at which spray pattern irregularities disappear. The hydrostatic pressure for the round spray ranges between 25 and 75 bars and the air pressure for the auxiliary air vortex ranges between three and one bar.

Abstract: A gun, for spraying paint, of the type that comprises a nozzle for spraying the paint, a pair of oppositely located nozzles for sending jets of compressed air to the sides of a spray cone in order to flatten and fan it out. A control valve is connected to the line supplying the compressed air to the pair of nozzles.

Abstract: Apparatus operable by actuating a trigger to cause high-pressure air from a compressor to jet out from the front end opening of a nozzle and to simultaneously produce an air curtain in the form of a conical air layer surrounding the air jet and spreading out from an annular fine clearance provided approximately at the base portion of the nozzle.

Abstract: The projecting nozzle for powder coating is a device for dispersing finely divided powder paint particles in a pattern controlled by swirling air without accumulating unwanted powder particles. A hollow nozzle is located concentrically to a guide member forming a gap through which the powder is projected. Orifices and, or slits located in the guide member direct compressed air in a swirling motion. A porous plate, forming the front of the guide member allows air to pass therethrough and thereby prevents the accumulation of powder particles.