Abstract: The device for forming an aerosol has a device for adjusting the amount of particle former transported by the spray jet per time unit and/or a device for adjusting the amount of compressed gas passing per time unit through the wall. Such a device can be used for fluid treatment of sensitive, easily deformable objects, especially for their cooling, or other applications requiring certain metering of the particle formation, for example, in a burner. By providing a permeable wall having pores, it is possible to produce fluid particles with minimal kinetic energy by the effect of the compressed gas flowing through the permeable wall so that at the exit side of the wall a fluid particle stream with particles having extremely low energy per particle can be produced.

Abstract: A rotary bell cup for atomizing particulate material such as paint includes a generally conical overflow surface having a generally constant flow angle defining a radially inward central axial opening and a radially outward atomizing edge with a bevel. A central flat portion is disposed between the conical overflow surface and the radially inward central axial opening. A deflector having a deflection surface of generally rotational symmetry is disposed in front of the central opening having a rear flat surface generally parallel to the central portion and a rear conical surface generally parallel to the conical overflow surface.

Abstract: A nozzle 10 including a member 12 which selectively receives a first material 18 and a second material 22, and which selectively atomizes the second material 22 by use of the first material 18. The nozzle 10 further includes a diffuser member 50 which receives the atomized second material 22 and which diffuses the received and atomized second material 22 while substantially, concomitantly, and tangentially applying the first material 18 to the diffused second material 22, thereby allowing the atomized second material 22 to be desirably deposited upon a target location 7 and/or object 9.

Abstract: A nozzle assembly 12 having shroud members 26, 28 which selectively emit a material 21 along at least one edge of emitted material 25. The selectively emitted material 21 substantially prevents and/or eliminates the turbulent shear layer which is formed within the emitted material 25.

Abstract: An HVLP spray gun air cap having an axial passage with a cap opening on an outer side thereof, first and second air horns protruding from the outer side of the air cap on opposite sides of the cap opening, first and second diverging air passages disposed in the air cap having corresponding orifices on the outer side thereof, the first and second diverging air passages disposed on opposite sides of the cap opening and aligned perpendicular to air passages of the first and second air horns.

Abstract: A spray gun configured with a roiling wall diaphragm piston and vented piston cylinder connecting the needle to the needle actuator and isolating the liquid chamber of the nozzle body from the actuator section. The flange of the rolling wall diaphragm is sealed between the mating faces of the nozzle body housing and the actuator housing. The actuator is a double action air operated piston and cylinder. Sanitary, non-threaded quick disconnect couplings are used between the several components of the spray gun for easy cleaning and servicing of the nozzle body, tip and needle, and easy replacement of the rolling wall diaphragm.

Abstract: An air assisted spray nozzle assembly having an air cap effective for generating wide, flat spray patterns with improved liquid particle breakdown, utilizing relatively low air flow rates and pressures. The air cap includes a pair of longitudinally extending air passageways on opposite sides of a central liquid flow stream discharge orifice. The air flow passages each have a discharge orifice defined by a respective transverse deflector flange and a closely spaced inwardly tapered deflector surface which cooperate to deflect and guide pressurized air streams inwardly toward the discharging liquid flow stream for atomizing the liquid and for directing it into a well defined spray pattern.

Abstract: An integrated multi-head device for effectively converting liquid into mists directed forwardly and laterally of the device. The device may be used by itself or combined with a fan for efficiently entraining the produced mists in the fan's airstream.

Abstract: A rotary atomizer applies particulate paints with good color matching by reducing paint droplet size deviation and then optimizing the other paint spraying parameters. Paint droplet size parameters are reduced by using a bell cup having reduced flow deviations, including an overflow surface having a generally constant angle between a deflector and an atomizing edge.

Abstract: A dispensing gun for atomizing a fluid under pressure with pressurized air includes a body having two fluid inlet structures and an air inlet structure defined in the body. An elongate barrel housing projects outwardly from the body. A longitudinal air passageway communicating with the air inlet structure, and a longitudinal fluid passageway communicating with the fluid inlet structure are defined within the barrel housing. An atomizing structure for atomizing the fluid under pressure with the air under pressure is connected to the distal end of the barrel housing.

Abstract: Heat-treatment device which includes a cooling unit comprising delivery nozzles which deliver at least one coolant, characterized in that it furthermore comprises a shielding element designed so as to maintain a gaseous shielding atmosphere around at least part of the delivery nozzles.

Abstract: A multi-path spray gun includes a body and a manifold. The body is couplable to a source of pressurized air. The manifold is coupled to the body to receive the pressurized air, and is also simultaneously couplable to a plurality of fluid sources to receive fluids. The manifold is adapted to direct the fluids and pressurized air such that pieces of the fluids are propelled by the air in a non-atomized manner.

Abstract: A method and apparatus for sweeping seating areas is provided which enables the operator to stand substantially upright while directing a stream of air substantially horizontally along the floor supporting the seats. The apparatus includes a handle adapted for connection to a source of compressed air, a substantially elongated wand connected to the handle, and a nozzle which directs a stream of air along the floor substantially perpendicular to the wand. The nozzle is configured to intake additional air besides the compressed air supplied through the handle to provide increased air volume at pressures reduced from that supplied by the compressed air source. The method includes positioning the apparatus behind seats, particularly in stair-stepped stadium seating areas to provide a substantially horizontal air flow reaching into corners between the riser wall and landing of the seating area and around the bottoms of the seats.

Abstract: A versatile air blow-gun is provided which includes a clamping assembly on the mouth of the gun. By use of the clamping assembly, a long scavenge pipe with a head bent at an angle can slide in or out when the clamp is loosened and be fixed at a desired position and direction by locking it. An inflating adapter is screwed on to the end of the air scavenge pipe, which adapter is used for blowing a larger area at a lower air speed to prevent the dirt and the chips from flying up. By means of a shuttling sleeve, a regulating adapter, a spring and a scavenge sleeve, the compressed air is ld from a smaller channel to a bigger one for lowering the blowing air speed and increasing the sweeping area. When the crown bar of the regulation adapter presses against the valve stem of the air valve of the tire, it can inflate the tire.

Abstract: A drying nozzle is comprised of a tube for mounting on a nozzle head of a spray gun. The body contains inlet slits for ambient air entering one tube end which taper in a direction of the interior of the tube. The body expands toward the other tube end. Upon mounting the body on the nozzle head the narrowest region of the tube between the tapering region of the inlet slits and the expanding region of the tube lies directly behind an air outlet opening when seen in direction of flow of the air passing out of the air outlet opening of the nozzle head. Upon supplying compressed air in the center of the tubular body a negative pressure in the tube interior is produced and as a result of which ambient air is drawn into one tube end and passes out at the other tube end together with the compressed air.

Abstract: A process and system for shielding a turbulent fluid stream, comprising emitting a laminar flow of a shielding gas transversely to the flow direction of the turbulent fluid stream preferably from a porous wall. The turbulent fluid stream may be hot and may contain a coating material. By projecting or directing the turbulent fluid stream at the surface of a substrate to be coated, the heated coating material is deposited on the surface of the substrate.

Abstract: A row of open top containers travelling on a conveyor is purged of oxygen by passing the containers along a gas distribution manifold disposed parallel to the direction of travel of the containers. The manifold includes at least one region of lower flow resistance disposed parallel to the direction of travel, for supplying a higher velocity inert gas flushing stream continuously and at substantially steady state to the containers. The manifold also includes at least one region of higher flow resistance disposed parallel to the direction of travel, for supplying a lower velocity inert gas region along the containers, continuously and at substantially steady state. As the containers pass along the manifold, the inert flushing gas steadily removes oxygen from the containers, while the lower velocity inert gas region prevents the flushing gas from drawing in air.

Abstract: A spray gun apparatus having air passages for the atomization of liquid passing through a liquid outlet orifice, and having air passages for directing air flow against the atomized particles emitting from the spray orifice, wherein the atomizing air passages are separated from the fan air passages, and an adjustable control valve selectively controls the volume of air through the fan air passages. The spray apparatus has an air spray nozzle including a spray nozzle concentrically fitted into an air cap, both parts being precisely aligned along a common axis; the air cap includes a contoured groove for smoothly directing air flow to fan air orifices.

Abstract: Apparatus and methods for spray coating selected areas of a circuit board with an insulative coating material without coating regions of the circuit board to be left uncoated. A liquid spray device emits the coating material and an air assist attachment connected to the liquid spray device directs jets of air into impinging relation with the coating material emitted therefrom to transform the coating material into an atomized, shaped spray pattern for coating the selected areas. The air assist attachment can be disabled so that the spray device transforms the coating material into a non-atomized, shaped spray pattern for coating selected areas without coating regions of the circuit board to be left uncoated.

Abstract: A nozzle assembly for dispensing and transporting an application media in an airstream to a remote target area surrounds primary airstream with a protective concentric sleeve of air. The assembly introduces atomized droplets of a concentrated application media radially inwardly into the airstream through the airstream's peripheral boundaries to further atomize the droplets.

Abstract: A device mounted about a tool handling spindle of a machine tool for entrapping dust and particles produced in the milling of a graphite workpiece. The device uses Electric Discharge Machining (EDM) fluid to form a closed envelope surrounding the milling point. The device includes a collar having a first annular groove in fluid communication with an endless radial nozzle which emits the fluid envelope. The collar also includes a second annular groove concentrically disposed in relation to the first annular groove. An adjustable spraying attachment for use in directing a flow of EDM fluid on or about the milling point, is attached to the collar and in fluid communication with the second annular groove.

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: 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: The nozzle assembly of an electrostatic spray gun has an adapter which is made of an electrically insulating material and has a front surface facing in the direction of propagation of material issuing from the orifice of the nozzle. The adapter has a frustoconical extension which surrounds the orifice and whose external surface defines with the front surface of the adapter an annular space for the tips of electrodes which ionize air flowing toward the spray of material that issues from the orifice. The locations of the tips of electrodes (preferably very close to the front surface of the adapter) and the inclination of the external surface of the frustoconical extension determine the location of contact of ionized air with the spray. The tips of the electrodes are shielded from mechanical damage by being located in the annular space.

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: An apparatus and method are disclosed for reducing the oxygen concentration at the interface between a cutting tool and a relatively rotating metal workpiece. The apparatus comprises (a) a supporting means for holding the cutting tool in a predetermined position relative to the workpiece, and (b) means effective to direct a plurality of discrete flows of inert gas between the cutting tool and workpiece in a manner to substantially reduce the oxygen concentration in the zone to a predetermined level. The method comprises (a) directing a first stream of inert gas closely adjacent the interface, and (b) directing a second stream of inert gas to at least partially surround the first stream.

Abstract: A spray apparatus is disclosed which is capable of producing a sharp-edged layer of coating in overlap over the surfaces coated in a different color so as to provide a distinctly divided two-tone pattern of wide dimensions without using masking tape. The spray apparatus comprises a first spray means and at least one second spray means different in nozzle design from the first spray means. In the first spray means, a film of coating is produced by an airless type paint discharge nozzle discharging a spray of atomized paint under pressure in an otherwise conical shape which is to be altered in spray formation by a jet of pressurized air whose axis is offset from the axis of the spray of paint and this film is thick enough along one edge and in the center while decreasing in coating toward the opposite edge.

Abstract: An electrostatic spray coating apparatus is disclosed which comprises a spray nozzle containing both air and liquid discharge ports, an inductive charging device or charging electrode located exteriorly of the discharge ports and attached to the spray nozzle, and electrical connections for applying an electric potential to the inductive charging device. The inductive charging device or charging electrode creates a charging zone, and is preferably positioned so that ambient air is mixed with air and fluid exiting from the discharge ports within the charging zone.

Abstract: Apparatus for producing an aerosol jet comprising an atomizing means and a flow of carrier gas for entraining the particles formed.Downstream of the atomizing means, the conduit for carrying the aerosol constitutes the central passage (20) of a double nozzle (21) whose annular passage (22) receives another dry gaseous flow. This thus forms a central flow of aerosol, which is sheathed externally by a flow of dry gas.The invention is used for the analysis of solutions by spectroscopy.

Abstract: A conically shaped probe or forward portion on an air nozzle having a rearwardly extending hollow externally threaded portion providing an air flow duct. A supply of pressured air in communication with said air flow duct and having circumferentially spaced apart air outlets permitting air to flow from said air flow duct to an air flow gap and along the conical exterior surface of the probe, the COANDA effect functioning on this flow of air along the probe. A rotatable internally threaded collar is threadedly mounted on said hollow externally threaded portion of the probe and extends forwardly over and spaced from the plurality of air outlets and directing the flow of air through said gap to the external surface of the conical portion of the probe. The dimensions of the air flow gap may be varied by turning the collar to move it toward the conical portion of the probe or away therefrom.

Abstract: Electrostatic spraying apparatus comprising a housing having an opening, liquid atomization means and induction charging electrode means mounted in said housing to deliver an electrically charged spray of liquid particles outwardly through the opening, inlet means to said housing for delivering to the housing a flow of gas for subsequent envelopment of the electrically charged spray of liquid particles upon exit from the housing, and repelling electrode means of a polarity the same as the electrically charged spray and defining an electrical repulsion zone for repelling said spray immediately prior to and after the exiting of said spray from the opening. Relatedly disclosed are an electrostatic induction charging gas shroud adapter and a repelling electrode adapter, each to be employed with appropriate atomization means to deliver an electrically charged spray of liquid particles as described above.

Abstract: A nozzle for a spray gun for depositing liquid on a work surface including a body having a channel communicating with a dispensing tip for the liquid, an assembly for attaching the body to the spray gun such that the liquid supplied from the spray gun is introduced into the channel of the body, a passage for the transmittal of pressurized air from the spray gun to a position proximate the dispensing tip, and an air cap circumposed about the dispensing tip having a plurality of orifices therein communicating with the passage for directing pressurized air jets axially of the air cap, whereby the liquid emitted from the dispensing tip is entrained within the confines of the pressurized air jets and deposited on the work surface.

Abstract: Inexpensive air gun has body with internal fixed coaxial tubular element having closed end with radial openings. A tubular valve element is reciprocal on the tubular element to valve off the radial openings. Tubular valve element is operable by actuator from outside body. The valve element has pressure-balanced surfaces for ease of operation.

Abstract: A spraying device having a liquid dispersing nozzle mountable in association with a chamber for directing a stream of gas can be used to provide a spray stream enveloped within a shroud of temperature and humidity conditioned air or gas for controlled evaporation of solvent from spray particles or for preventing reaction of particle components with the ambient atmosphere, and/or to prevent particle deposition and build-up on electrodes positioned so as to produce electrostatically charged particles.

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: A welding torch tip for use in welding ferrous metals with Mapp gas, and method for same. The tip is elongated and has threads in one end thereof and a gas outlet in the other end thereof and it has a gas mixing chamber centrally located in the tip and intermediate the screw threads and the outlet. The method is the steps of introducing the gas into the tip and mixing the gas in a chamber in the tip and then directing the gas through a passageway and out of the tip.

Abstract: An improved air nozzle is provided which produces high thrust amplification over a relatively wide range of input flow rates while maintaining relatively low noise levels. The nozzle is adapted to provide flow amplification by inducing flow of ambient air with high pressure air.

Abstract: An air nozzle is provided which produces high thrust with low noise. The nozzle is adapted to provide flow amplification by inducing flow of ambient air with high pressure air.

Abstract: An electrostatic coating nozzle provided with air jet means for preventing fouling of the nozzle electrode and electrode housing.

Abstract: The invention relates to an electrostatic spray gun for the deposition of powdered coating material characterized by an improved deposition efficiency and provided with a multi-stage, trigger operated control that permits spraying at a plurality of conditions that may be preselected by the operator. An axially disposed needle charging electrode is used and an axial air flow passage surrounds the same to reduce any troublesome accumulation of powder on the needle under all spraying conditions.