Abstract: Method and apparatus for fire control comprising the use of a gas-liquid twin fluid spray nozzle. In one embodiment the spray nozzle comprises a mixing chamber having a gas inlet and one or more outlets at opposite ends, two or more liquid inlets between the gas inlet and the outlets and a mixing zone between the liquid inlets and the outlets. In another embodiment the spray nozzle comprises a mixing chamber having a plurality of gas inlets, liquid inlets and outlets, the inner surface of the mixing chamber being capable of aiding mixing of gas and liquid introduced through the inlets.The nozzles may be used in fixed, portable or semi-portable fire control systems.

Abstract: A quickly adjustable foaming chamber stem for a foam-applying fire-fighting nozzle wherein the fire-fighter can quickly switch from applying on optimum foam to a stream with an optimum throw. The stem is comprised of a deflector plate and a mixing plate that define a foaming chamber there between, the deflector plate having ducts that, when open, communicate a portion of the liquid and foam-stabilizing concentrate into the chamber to form a foam. The foaming chamber, maintained at approximately atmospheric pressure, forms a small homogeneously bubbled maximum foam through liquid from the ducts striking and reflecting from the mixing plate, causing thereby turbulence and agitation. Surface portions of the mixing plate are inclined to maximize agitation.

Abstract: An apparatus to allow reaction in the liquid phase. The apparatus is a vessel having a baffle. There are openings in the baffle through each of which a liquid passes as a jet. Neighboring openings are sufficiently close to allow impingement of the jets thereby allowing for reaction of the liquids. The invention finds application in reactions where the reactants are immiscible and is particularly suitable in the nitration of aromatic hydrocarbons using mixed acids in aqueous solution. A method of conducting a reaction between at least two reactants in the liquid phase is also provided comprising passing a liquid containing the reactants through a plurality of adjacent spaced openings to create a series of impinging jets.

Abstract: A foam producing device for the alternative dispensing of foams or liquids comprising a porous element a partially gas permeable wall, a gas distributing plenum a gas entry port in fluid connection with said plenum; a second wall opposite the outer surface of said gas permeable wall; a mixing chamber comprising at one end, the proximal end, a small annular opening between said gas permeable and second wall, comprising an orifice for the uniform distribution of foamable liquids therethrough into said chamber and at the distal end an exit port for the discharge of foams or liquids from said chamber said chamber being tapered or not, as required; a liquid distribution plenum for the uniform distribution of said foamable liquids to said orifice and a liquid entry port in fluid connection, through a conduit with said plenum wherein said plenum and a source of foamable liquid are in fluid connection through a conduit therebetween; with the proviso that only the portion of said gas permeable wall between said orific

Abstract: An intra-microspray ICP torch for use in conjunction with spectographic analysis generates a high temperature ionized gas in a plasma region at one end of the torch, and includes a preshaped tube mounted within the torch, with a first end of the tube terminating adjacent the plasma region, and a nebulizer mounted to a second end of the tube. The preshaped tube has at least one set of impactors that define at least two chambers, the impactors blocking the line of sight between adjacent chambers. The nebulizer propels a pressurized aerosol/sample mixture at the impactors, toward the plasma region. The impactors divert the mixture as it travels from chamber to chamber toward the plasma region, causing a filtering effect that promotes passage to the plasma region of sample particles having a size of about 15 microns or less, thereby resulting in optimum spectrographic clarity.

Abstract: A binary atomizing flat-jet nozzle with rectangle characteristic comprises a mixing head forming a mixing chamber with two mutually orthogonal connectors for a gaseous and a liquid medium, further a preferably tubular connector connecting to those connectors and a snout forming the slitted nozzle discharge. A metering inset with a cylindrical blind bore is mounted in the second connector supplying the liquid, the blind bore issuing inside the mixing chamber bilaterally into cross-bores. The snout comprises an offset bore with arched bottom. A baffle with a sharp-edged central transmission aperture rests on the bore offset and comprises an inside diameter less than the diameter of the offset snout bore. A nozzle with the above features is characterized by its simple design, easy manufacture and very uniform liquid distribution (so-called rectangle characteristic).

Abstract: An apparatus for preparing a water-based air foam includes a mixing chamber for mixing two liquid components, and a nozzle which sprays the mixed liquid components toward a pair of screens within a compartment to produce a foam material. A portion of the first liquid component is diverted upstream of the mixing chamber and is sprayed by three nozzles into the compartment to continously wash away pre-gelled materials which might otherwise accumulate on a side wall surrounding the compartment.

Abstract: A fuel injection valve includes an injector body having a fuel injection hole and an adapter having a fuel collision surface, two air injection holes and two injected fuel paths. The fuel injected from the fuel injection hole flows in a slug-like pattern and collides with the fuel collision surface where the fuel is atomized a first time. Then, the fuel flows in a direction away from an axis of the adapter in a membrane-like pattern getting thinner in thickness to be finally broken to pieces, that is, to be atomized a second time. The air injected from the air injection holes collides with the membrane-like pattern of fuel to be atomized a third time before the fuel goes out of the injected fuel paths.

Abstract: Syringe holder carriers first and second syringes which contain proteins which, when mixed, become a tissue adhesive. A manifold locks onto the two syringes, receives the two streams and delivers them to an output nose. A standard needle detachably locks onto the nose of the manifold. Alternatively to a needle, a spray nozzle can be locked thereon.

Abstract: An apparatus for pneumatically discharging a liquified building material includes a first source of liquid hardener and injection means for injecting the liquid hardener perpendicularly into the air-entrained building material at the discharge nozzle. The liquid hardener may be supplied through an atomizer and injected through openings that are enlarged. A second source of liquid hardener may be provided to supply a second hardener mixed with the airstream that entrains the building material. A flexible tubing may be provided between the aeration fitting and discharge nozzle to require that only the discharge nozzle be lifted by the operator.

Abstract: A two-fluid nozzle for atomizing an aqueous slurry includes a core member which will provide an atomized, cone-shaped spray of slurry droplets and an annular manifold which will provide a circular pattern of injected steam around the atomized slurry. The core member extends below the steam injection orifices and the bottom of the core is extended in diameter to form a concave groove and a lower lip which will disrupt the flow of steam from the injection orifices. A nozzle cap surrounds the slurry atomization and steam injection orifices.

Abstract: The present invention is a nozzle cap which has a foaming cylinder arranged on the front face of a nozzle port of a nozzle body, wherein an inner peripheral uneven portion is formed on the inner peripheral wall of the foaming cylinder. The uneven portion formed on the inner peripheral wall of the foaming cylinder complicatedly reflects the liquid injected from the nozzle port as compared with a mere cylindrical foaming cylinder to thus effeciently foam the liquid.

Abstract: A powder sprayer for the powder coating of an object is provided with an annular charging channel (9) for electrostatic charging of the powder. The channel is defined by an inner, longitudinal rod (8) and an outer tube, (7), both being manufactured of electrically insulating material. The rod (8) is centered in the tube (7) by means of spacer and turbulence members (10) with vanes which are obliquely inclined or helically configurated in relation to the longitudinal direction of the sprayer. In order to improve the charging and blending of the powder, the turbulators (10) are arranged pair-wise after one another, each with a plurality of vanes which are distributed about the rod (8) so that through flow channels are formed between the vanes.

Abstract: The gas burner comprises a mixer, a conical transition member adjacent thereto on which a cylindrical burner shell with openings and whose top is closed by a burner lid is mounted. Clamped between the burner lid and the transition member is a throttling cylinder which is filled by the super-stoichiometric gas mixture at super-atmospheric pressure. In order to avoid burner pulsations the cylinder has throttling openings whose total area is 2 to 10% of the total area of the openings. The throttling openings are in a plurality of circular rows above one another in such a manner that they are on a respective vertical line. Vertical, imperforate sections of the burner shell are opposed to the lines so that the mixture jets from the throttling openings do not impinge directly on the openings. The cylinder is provided at a coaxial spacing of 5 mm from the burner shell.

Abstract: A nebulizer for producing a quantity of fine liquid droplets consisting of a screen over which the liquid to be nebulized is flowed and a nozzle for directing a stream of gas at the screen. The force of the gas against the screen creates the droplets by shearing the liquid from the spaces in the mesh. A second screen in front of the first may be used to increase the uniformity of the output.

Abstract: A slurry distributor (S) for distributing a low viscosity fluid into a viscous, hydraulic slurry comprises a main conduit (1) located on a first axis .alpha. for conducting a flowing, viscous, hydraulic slurry towards an orifice (3). The distributor (S) has an air injector (5) defined by a stem (7) located on a second axis .beta.. The air injector (5) is for introducing air into the slurry to disperse it from the orifice (3). A second injector (9) located on a third axis .gamma. and intersecting the main conduit (1) is used to introduce a low viscosity liquid, preferably an accelerator, into the flowing slurry such that the low viscosity liquid impinges on the air injector stem (7) before dispersion. The distributor is especially useful with fireproofing compositions since it provides effective distribution of a viscous, hydraulic, cementitious slurry with an acidic accelerator.

Abstract: A superflow diffuser and spout assembly includes an inlet for carbonated water, an inlet for syrup, a diffuser assembly through which the carbonated water passes prior to being dispensed, a spout, a syrup distributor, and a flow separator within the path of the carbonated water, the flow separator being operative to separate the carbonated water into at least two streams, one stream directed to flow along an outside surface of the spout, the second stream directed to flow inside the spout, the second stream colliding with and mixing with syrup distributed within the spout, wherein the first stream of carbonated water and the second stream of carbonated water, then mixed with syrup, meet and form a single stream for dispensing. A second embodiment includes a syrup distributor having a plurality of inlets for different flavored syrups and a shroud located within the spout between the syrup distributor and an inner surface of the spout.

Abstract: Foaming apparatus for foaming a water detergent mixture using compressed air comprises a housing having an elongated main bore extending therethrough. An upstream portion of the main bore is tapered in a generally downstream direction. A jet of water detergent mixture is delivered axially into the tapered portion of the main bore through a first orifice. Four second orifices extending transversely into the tapered portion deliver compressed air for mixing with and foaming the jet of water detergent mixture. Foamed water and detergent mixture is delivered through an outlet at the downstream end of the bore.

Abstract: The foam nozzle assembly is mounted to a trigger sprayer and comprises an outer barrel portion defining a foam generating chamber into which liquid is ejected in a conical spray from an orifice in a back wall of the foam generating chamber. The cone of the spray subtends a predetermined angle. A perforated wall is located in the outer barrel portion and is spaced forwardly of the back wall having the orifice from which the conical spray is ejected. The perforated wall has ribs and slots therein and the back edges of the portions of the ribs between slots are rounded to provide a surface upon which the conical spray can infringe and be deflected in different directions to mix with air in the foam generating chamber to create foam. The rounded back edge of each of the ribs is defined by a generally circular round having a given radius R. Preferably, the width of each slot is defined as S and the radius R is in a ratio to the slot width S, R:S, of between approximately 1:2 and 1:4 and preferably 1:3.

Abstract: A liquid dispenser mixing nozzle comprising a housing defining a chamber, a dispensing orifice in the housing communicating with the chamber at a first end, a liquid supply source in fluid connection with the chamber at a second end of the chamber, a plurality of baffles substantially perpendicular to the side wall of the housing, and removable circumferential support members for suspending the baffles within the chamber. A method for mixing and dispensing liquid is also provided.

Abstract: A water cannon, having an air gun disposed within its breach, for explosively discharging a quantity of water from the muzzle, which may include a constricted directional nozzle, to dislodge sludge from the tube sheet of a heat exchanger, and a method of cleaning the tube sheet of a heat exchanger are disclosed.

Abstract: An article for generating foams from foamable liquids and pressurized gases comprising a housing encompassing a hollow porous element in fluid connection with the gas source through an inlet port in the housing, a mixing chamber comprising the space between the walls of the porous element and housing in fluid connection a source of the foamable liquid wherein the liquid and the gas diffusing thereto through the wall of the element mix to form the foam which is discharged without passing through pores the article further comprising, if desired, a valve to prevent entry of the gas to the porous element, and therethrough to mix with the liquid, whereby the liquid is dispensed in its liquid form.

Abstract: A spray nozzle in which a nozzle body is formed with an elongated chamber having an air inlet port communicating with the side of the chamber, a liquid inlet port communicating with one end of the chamber, and a nozzle tip communicating with the opposite end of the chamber. The spray nozzle may be operated in a hydraulic or non-air assisted mode and with a relatively high flow rate by closing off the air inlet port and causing liquid to stream directly from the liquid inlet port to the nozzle tip. The nozzle also may be converted to an air assisted mode in which a stream of pressurized air is injected into the air inlet port and impinges transversely against the liquid stream to preliminarily break up or preatomize the liquid before the liquid is discharged from the nozzle tip. The conversion is effected by placing into the nozzle body an insert for reducing the flow rate of the liquid stream and for causing the air and liquid streams to interact to effect preatomization of the liquid.

Abstract: An apparatus and method for dispensing an individual beverage serving are disclosed wherein a rupturable packet containing a flavoring constituent is ruptured by a mechanically actuated platen. Platen movement during the dispensing cycle is controlled by a specially configured cam and dependent upon predetermined volumes of flavoring constituent and gas within the packet. A nozzle assembly is employed for mixing the flavoring constituent with a base liquid and includes a deflector for insuring substantially uniform mixing and elimination of undesired foaming in the beverage. A specially configured rupturable packet is employed in which the side seals and the seal forming the packet spout are stronger than the peel seal of the packet, but weaker than the top closure seal. Another packet design employed with the apparatus has a spout which is angled to one side.

Abstract: A gas burner assembly for producing a high intensity flame while also producing a flame of a large area. The burner assembly includes a hollow shell having a stem member engaged at one end thereof for supplying a combustible gaseous mixture to the shell. A circular, disk-shaped slug member which contains a plurality of cavities extending therethrough directs the flow of the gaseous mixture through the cavities. The longitudinal axes of the plurality of cavities extending through the slug member extend an angles relative to the the longitudinal axis of the shell. Part of the combustible gaseous mixture is caused to emerge from each cavity and strike and be reflected from the interior walls of the shell, causing the velocity of the gas to decrease. The reflected gaseous mixture is recombined at a lower velocity with gas stream parts which do not impinge on the shell.

Abstract: In the spray head for the administration of a multi-component material by means of gas, a gas channel (2) with gas connection (3) is provided, which channel is divided by a separating web (4) into a plurality of channels (2a2b) running parallel to the separating web. Into these channels there open out boreholes (5, 5a) for receiving cannulas. The open ends of the boreholes (5, 5a) go into grooves (7, 7a) which serve for guiding the cannulas (6, 6a). The grooves are arranged parallel to the gas channel (2). The separating web (4) protrudes beyond the channel ends (9, 9a).

Abstract: A combustion device which includes a forward section in which a baffle has been inserted for stalling the air and fuel mixture as it passes through the torch tip, generating a linear flame. The baffle is designed to include a substantially circular inner portion of wire screen, sintered powdered metal, or ceramic material, surrounded by a solid annular or substantially annular ring. A plurality of ribs extend between the annular ring and the inside of the tube for connecting the annular ring to the tube and for defining a number of outer passages through which air/fuel mixture may pass.

Abstract: An internal mixing chamber wherein a small amount of secondary fluid is introduced through a circumferential orifice having circumferential rotation and a large amount of primary fluid is introduced as an axial annulus to flow axially through the radially introduced secondary fluid to be mixed therein. The secondary fluid is introduced at lower pressure than the primary fluid and the system is self-balancing.

Abstract: The resonance atomizer (4) of the burner facility has, as main components, a resonator ring (16) and a resonator cone (23), which each have an annular groove (25+24, respectively), which together form a resonance chamber (24+25). By a plurality of spacer strips (26) on the resonator ring (16), the resonator ring (16) and the resonator cone (23) are held apart by a distance which creates an annular inflow duct (27) for the oil/atomizing air mixture and outflow ducts (28) on the combustion space side for this mixture atomized in the resonance chamber (24+25). Between the components (16, 23) forming the resonator chamber (24+25) and the oil nozzle (7) there is an atomizing cross (17) with a baffle plate (19).

Abstract: A foam generating nozzle construction, and method of use is disclosed, wherein a tubular nozzle body, with an inlet and outlet has turbulence inducing means in the form of contiguous transverse apertured plates preceding air aspirating means. A pressurized mixture of water and foaming agent enters the nozzle and diverges through a first set of apertures in an obstructing plate, then converges through a contiguous plate with a central aperture partially overlying the first set of apertures to create a turbulent spray which then entrains air from aspiration holes to produce a low or medium expansion foam with an enhanced drain time.

Abstract: Air-pressure-atomizers for liquids, whereby pressurized air and oil are first mixed in one chamber in the atomizer body of the atomizer and the mixture is discharged through an opening in the form of a spray jet. According to the invention, the spinner body (2, 3, 4, 7) of the atomizer (1) has a central dosing bore for oil (3, 4) and near the end of said bore (3) there is centrally symmetrically located a target impact disc or pin (6). The pin extends into a cavity (5) in the direction of the central bore (3). Air supply bores (slots) (7) tangentially open into the cavity (5) in the direction of the space between the dosing bore (3) and the target pin (6). At the other side of the cavity there is at least one outlet opening (8) present for discharging the mixture.

Abstract: A spray nozzle assembly including a hollow nozzle body having an air inlet orifice through which a pressurized air stream is directed into the body, a liquid inlet orifice through which a pressurized liquid flow stream is directed into the body, an impingement member disposed within the body for breaking up the liquid and air flow streams and preatomizing the liquid, and a nozzle tip mounted at the discharge end of the body defining a discharge orifice. The nozzle tip is formed with a deflector flange downstream of the discharge orifice in transverse relation to the direction of travel of the preatomized liquid passing through the discharge orifice and the deflector flange is formed with a cup shaped recess in axial alignment with the discharge orifice into which the preatomized liquid is directed from the discharge orifice for causing further breakdown and atomization of the liquid which is thereupon directed by the deflector flange transversely in a substantially flat spray pattern.

Abstract: A two-material atomizing nozzle to produce a solid cone jet with a jet angle larger than 45.degree. comprises a nozzle unit with a first duct coaxial with the nozzle discharge and receiving a gaseous medium (for instance air) and a liquid medium (for instance water), a second duct orthogonal to the first duct and issuing into it serving to supply the liquid medium. To supply the gaseous medium, the nozzle unit comprises a third duct issuing into the first duct at the level of the second duct and being orthogonal or essentially orthogonal to both. A recoil bottom is provided for the premixed two-material mixture in the first duct and comprises communication apertures to an annular duct coaxial with and preceding the nozzle discharge into which it merges. The nozzle discharge also is in the shape of an annular duct, however its external boundary is flaring.

Abstract: An air assisted spray nozzle having a nozzle body formed with an elongated mixing and atomizing chamber having an air inlet orifice communicating with one end of the chamber, a liquid inlet orifice communicating with a side of the chamber, and a nozzle tip having a discharge orifice located at the end of the chamber opposite the air inlet orifice. Transversely directed stream of pressurized air and liquid enter and converge in the mixing and atomization chamber of the nozzle body causing preliminary atomization of the liquid, which is thereupon directed under the force of the high velocity air stream out the discharge orifice and against a deflector flange of the nozzle tip which further atomizes the liquid and directs it into a well-defined flat fan spray pattern with substantially uniform liquid particle size.

Abstract: An improved nebulizer for substantially complete discharge of liquid before "sputtering" occurs includes a housing having a mist outlet, and an aspirating structure including a nozzle having a base portion at one end thereof within the housing. The nozzle includes a nozzle outlet for discharge of gas under pressure within the housing at end of the nozzle opposite the base portion. The nebulizer further includes an inverted frusto-conical bottom wall disposed about the base portion of the nozzle away from the nozzle outlet, the bottom wall forming a liquid reservoir that drains towards the base portion of the nozzle. The aspirating structure also includes at least one passageway peripherally located with respect to the nozzle, the passageway communicating with the reservoir for aspiration of liquid from the reservoir in response to gas discharged from the nozzle to form a mist.

Abstract: An apparatus for mixing and dispensing multiple fluids utilizes two fluid reservoirs each in fluid communication with a respective pump for pumping the fluids to a mixing head, the pumps being mechanically connected to each other and adapted to pump fluids from the reservoirs at a predetermined volume ratio, and with a pressure switch provided for measuring fluid pressure to the mixing head and stopping the pumping of fluid at a predetermined maximum pressure while starting the pumping of fluid when the fluid pressure falls below the predetermined maximum pressure. A device for detecting an empty fluid reservoir is used to stop the pumping of fluids to avoid single component pumping. A mechanical torque-releasable coupling is used to disconnect a pump from the pump drive in the event of an internal pump overload.

Abstract: An apparatus for catalyst/oil mixing in a catalytic cracking unit comprises a bifluid nozzle for atomizing oil having an outer tube with an end connected to the sidewalls of a coaxial inner tube forming an annulus therebetween, and apertures through the inner tube for mixing steam introduced into the annulus with oil introduced into the inner tube. The inner tube has an end protruding past the end of the outer tube with a cap having a slot affixed to the end of the inner tube, and a plate baffle mounted inside the inner tube and extending partially thereacross near the apertures. The apparatus further comprises a means for providing a flow of cracking catalyst particles along an exterior surface of the cap so as to sweep the length of the slot.

Abstract: A mist supplying device for supplying a film-forming solution to form a thin film on a substrate includes a nozzle having an elongate outlet port, an atomizer coupled to the nozzle for atomizing the film-forming solution, and a disperser movably disposed in the nozzle between the outlet port and the atomizer and having a plurality of substantially uniformly distributed mist passages for passing the atomized film-forming solution in a first flow passage direction therethrough. An air blower is coupled to the atomizer for delivering the atomized film-forming solution into the nozzle. A driver unit is coupled to the disperser for reciprocally moving the mist passages in a second flow passage direction transverse to the first flow passage direction.

Abstract: A process and apparatus for generating multiple spirally convergent/divergent fluid jet streams and an improved process and apparatus for generating particulate containing fluid jets wherein at least one discontinuity generator is provided to create fluid instabilities, enhancing entrainment and acceleration of particulates in the fluid jet stream and providing uniform distribution of accelerated particles over a large surface area.

Abstract: An internal mix, air-assisted, airless atomization, plural component spraying system includes a source of resin; a source of catalyst for the resin; a spray gun to mix the resin and catalyst and direct the mixture as a spray to a substrate; and a source of compressed air to assist in atomization of the mixed resin and catalyst. The spray gun includes a mixing apparatus and an atomizer including a liquid nozzle for forming the mixed resin and catalyst into a fan-like film with expanding edges extending from a liquid orifice, and an air nozzle for forcing a flow of compressed air to converge at an elongated air orifice and expand in a fan-like flow.

Abstract: The burner for gaseous fuels is especially intended for boilers. It is provided with sliding and/or turning means (15, 37) so as to assure, at least, in the output range of between 50 and 100% of the rated output, an at least approximately constant quantity relationship between gas and combustion air. For this purpose, for the simultaneous change in the admission of gas and air into a mixing chamber (24), there is used a control component, for example, a piston (15, 37). A first moveable, turning and/or sliding control piston (15) is provided the outer cylindrical surface of which controls the amount of combustion air while inside the first, tubular control piston (15) there is a second control piston (37) preferably coaxial to the first control piston (15), which controls the amount of gas by means of its inner cylindrical surface. The two control pistons (15, 37) are firmly attached to one another and can be pushed back and forth and/or turned by means of an actuating device (33).

Abstract: A feedstock pipe for a FCC unit is provided with a plurality of turbulence generating members mounted on its interior surface. Each of the turbulence generating members has a pointed tip pointing toward the discharge end of the pipe and a ramp inclined toward the center of the pipe leading to the pointed tip.

Abstract: A device for atomizing a liquid is disclosed. The device is mounted to a frame and is plumbed for fluid communication with an air source and a liquid source. The device includes a grommet with a passage therein for receiving a substantially symmetrical foil. The foil includes a flow dividing mechanism for aiding in mixing the air and liquid fluids.

Abstract: A device and method for aerosolizing a liquid in a gas using a pressurized gas by creating the fog or "steam" at atmospheric pressure and room temperature. The liquid is drawn into the gas stream using a venturi pipe. The amount of entrained liquid is enhanced by directing the flow of liquid and gas against a deflector. Liquid entrainment is further enhanced by directing the flow past projections causing turbulence in the stream. The device may be operated in either a horizontal postion or vertical position by providing a liquid passage to the perimeter of the liquid reservoir by means of an angled liquid conduit formed between a pair of cone members.

Abstract: Spray discharge from a liquid sprayer is enhanced through a turbulent effect created by a ported baffle defining an air plenum into which air is induced to flow into the spray plume as it emerges from the discharge orifice causing the particles to collide and mix with the emerging spray. The baffle port is sized to match the divergence angle of the spray plume which essentially fills the port upon entry such that the air in the gap between the orifice and the port is driven through the port by impingement of the spray particles and entrainment of the air into the plume from the gap, while preventing any backflow of air through the port.

Abstract: A combustion device which includes a forward section in which a baffle has been inserted for stalling the air and fuel mixture as it passes through the torch tip, generating a linear flame. The baffle is designed to include a substantially circular inner portion of wire screen, sintered powdered metal, or ceramic material, surrounded by a solid annular or substantially annular ring. A plurality of ribs extend between the annular ring and the inside of the tube for connecting the annular ring to the tube and for defining a number of outer passages through which air/fuel mixture may pass.

Abstract: A powder spray gun for applying particulate powder material onto a surface includes a gun body having a venturi transfer pump which receives air-entrained particulate powder material from a supply conduit and distributes the powder for discharge into a discharge conduit connected to the gun body. A spray head formed with a powder discharge slot is mounted to said discharge conduit. The discharge conduit is formed with a bend, preferably of about 90.degree., to concentrate the powder material along an outer wall formed by the bend for delivery in a concentrated stream to the spray head. A deflector is preferably mounted within the discharge conduit to direct the concentrated powder stream into the spray head in a predetermined manner. The powder discharge slot, which has a predetermined width and is formed by angled side walls meeting at an apex, receives the concentrated powder stream from the discharge conduit and sprays the powder in a wide, uniform spray pattern onto a surface.

Abstract: In a method and an apparatus for pneumatically discharging hydromechanically conveyed hydraulic building material for underground operations, in which compressed air is supplied to the wet building material, pumped in a dense stream, in front of a mouth piece serving the discharge thereof and having in particular a nozzle shape, the compressed air being gunned out together with the building material, the invention provides for the dense stream of the pumped building material to be supplied to the compressed air supplied in a stream, sealed off from the outside air by the wet building material, and thereby be distributed in the compressed air stream and conveyed with the latter to the mouth piece to be discharged therefrom.

Abstract: A beverage dispenser valve assembly for dispensing a beverage mixed from a pressurized citrus concentrate containing pulp and a diluent. The valve assembly includes a body having a concentrate passageway with a valving chamber having a flexible diaphragm therein for controlling concentrate flow therethrough. The diaphragm sealingly separates the concentrate valving chamber into an air pressure region and a concentrate region. A compressed air line is connected to the fluid pressure region through a solenoid controlled three-way, valve which valve can maintain pressure on the diaphragm to hold it closed or alternatively vent the pressure to atmosphere, allowing the diaphragm to open under the pressure of the concentrate.

Abstract: This invention relates to a two-fluid nozzle for atomizing a liquid-solid slurry. The nozzle provides for the discharge of the atomized liquid-solid slurry which is oblique to the direction of flow of the liquid-solid slurry in the nozzle.