Abstract: An aerating device for a shower where the shower includes a water chamber having a connection for the supply of pressurized water and having a first perforated plate that forms a wall of the water chamber and that is provided with a plurality of holes. Each hole of the first plate is constructed as to project a single jet of water. The aerating device comprises a second perforated plate, positioned downstream from the first plate, to make an air chamber between the two plates. The second plate has a plurality of holes, each of which is aligned along the direction of projection of the respective jet of water of a corresponding hole of the first plate. An air intake is positioned between the air chamber and the outside environment. The aerating device makes it possible to aerate by way of the Venturi effect, at the outlet of the shower to eliminate any resistance after the jets have been formed for providing a highly efficient device.

Abstract: A liquid material dispensing system includes a nozzle tip that is adapted to dispense droplets of liquid material that expand in flight toward a substrate. The droplets elongate in orthogonal directions in a plane that is substantially transverse to the direction of travel of the droplets toward the substrate. Preferably, each droplet elongates in pattern width and in pattern length during its flight toward the substrate. The elongated droplets impact the substrate and contact adjacent droplets to form a generally rectangular layer of liquid material within a predetermined area on the substrate. Methods for forming a generally rectangular layer of liquid material on a substrate are also disclosed.

Abstract: A nozzle for the application of a fluid to a passing substrate in a bead form.

Abstract: A fuel inject includes an orifice plate which is arranged on a valve-seat member, particularly at its downstream end face, the valve-seat member having a fixed valve seat, the orifice geometry of the orifice plate being bounded by the valve-seat member, so that the flow ratios in the orifice plate are influenced by the valve-seat member. The valve-seat member covers an upper inlet region of the orifice plate, at least to the extent that downstream outlet orifices of the orifice plate are overlapped. The fuel injector is particularly suited for use in fuel systems of mixture-compressing internal combustion engines with externally supplied ignition.

Abstract: A fuel injector for an internal combustion engine is disclosed. The injector has a valve body, an injection hole which has a width larger than a height thereof, and a fuel reservoir on the downstream side of a seat portion of the valve body. The fuel reservoir has a side surface and a bottom surface. One part of the side surface imparts one velocity component oriented in the direction of width in the injection hole to the fuel flow along the one part of the side surface. Another part of the side surface imparts another velocity component oriented in the direction of width in the injection hole to the fuel flow along the another part of the side surface. The bottom surface is formed at right angles with the center axis of the injection hole. The injection hole is communicated with the fuel reservoir via the bottom surface thereof.

Abstract: A printhead having reduced spray includes orifi from which ink is expelled by an ink ejector. The orifi employ an aperture at the outer surface of the orifice plate having two orthogonal dimensions with one dimension having a greater magnitude than the other. The aperture is further defined by two non-intersecting edges spaced apart at one point by a distance of the smaller of the two dimensions and spaced apart at all other points by a distance greater than the smaller dimension such that the orifi are hourglass shaped.

Abstract: In fluidized catalytic cracking, enhanced efficiency is produced through the use of a spray nozzle having two transversely elongated discharge orifices for effecting fine atomization of liquid hydrocarbon feed as the latter is sprayed from the nozzle. The orifices preferably are inclined so as to produce a converging spray but can be inclined to produce a diverging spray or a substantially flat spray. Alternative forms of pressurized air atomizing heads are disclosed.

Abstract: A method and an apparatus apply a substance, especially a developer, to a surface through jets. Each jet carries the substance to be applied to a predetermined portion of the surface, and each jet essentially applies a predetermined quantity of substance per unit of surface area, wherein at least one jet applies a maximum quantity of substance per unit of surface area to the surface. The quantity of substance per unit of surface area applied by each jet is selected in such a way that it is greater than 1% of the maximum quantity of substance per unit of surface area.

Abstract: A fuel injector for an internal combustion engine is disclosed. In the fuel injector, an opening on the outer side of the injection hole has a width generally larger than a height thereof. The width of the injection hole is gradually narrowed inward so that the fuel is injected at a predetermined angle in the direction of width. The height of the injection hole is nearly uniform in the direction of injecting the fuel within the predetermined angle in the direction of width. A height at both ends of the opening on the outer side of the injection hole is larger than the height at the central portion thereof.

Abstract: A method of conditioning a flow of fluid comprises the steps of introducing a fluid into a nozzle body having an opening defining an inlet, an opening defining an outlet, and an inner surface connecting the inlet and the outlet, directing the fluid introduced into the inlet of nozzle body over the inner surface, and applying a pressure to the fluid. The inner surface of the nozzle is asymmetric with respect to a centerline of the inlet to provide a first region outside the nozzle of relative maximum pressure and a second region outside the nozzle of relative minimum pressure, where the first and second regions are substantially the same distance from the outlet. A fluid-conditioning nozzle comprises an inlet having an edge defining a first circumference, an outlet, offset from and spaced apart from the inlet, having an edge defining a second circumference, smaller than the first circumference, and a transition surface extending between the inlet and the outlet.

Abstract: In a fuel injector for an internal combustion engine having a valve body, an injection hole and a fuel reservoir on the downstream side of a seat portion of the valve body, an opening on the outer side of the injection hole has a width generally larger than a height thereof, the width of the injection hole is gradually narrowed inward so that the fuel is injected at a predetermined angle in the direction of width, the height of the injection hole is nearly uniform in the direction of injecting the fuel within the predetermined angle in the direction of width, a through hole is formed at the center portion of the injection hole in the direction of width, and the through hole is communicated with said fuel reservoir and has a height larger than the height of the injection hole.

Abstract: A fuel injector which is enabled to form a fuel spray efficiently and properly into a flat sector shape by improving the angle, dispersion and atomization of the spray and by optimizing the spray tip penetration. A slit-shaped nozzle outlet 4 is constructed such that its transverse walls from its inner end 9 to its outer end 10 have an included angle .gamma. of 20 to 180 degrees, such that an angle .beta. of 0 to 90 degrees is made between the axis of the fuel injector and the opening direction of the slit-shaped nozzle outlet 4, such that the nozzle outlet 4 is diverged outward from a plane joining the axis to the fuel injector and the inner end 9, and such that the opposite portions of the inner end 9 have a width W of 0.05 mm to 0.24 mm. By combining these constructions suitably, the fuel spray can be formed efficiently and properly into a flat sector shape thereby to improve the fuel injection characteristics.

Abstract: An inshot burner (10) includes an axially elongated tubular nozzle (40) having a flared inlet end (42), a cylindrical outlet end (44) and a venturi section (46) therebetween. A burner head insert (20) is disposed within the cylindrical outlet end 44. The burner head insert (20) has an axially elongated annular body (22) having an axially extending inner flow passage (25) passing therethrough and a plurality of circumferentially spaced, axially extending splines (30) radiating outwardly therefrom toward the surrounding wall of the outlet end (44) of the burner tube. A plurality of second flow passages (35) are defined between the plurality of splines (30). Each of the axially extending splines (30) has a cross width which enlarges in the axial direction from the inlet end of the burner head insert to the outlet end of the burner head insert.

Abstract: The invention concerns a process for fitting a gas-injecting nozzle in the wall of an installation. The process is characterized in that an external supporting surface (11) whose shape matches the so-called internal supporting surface (12) of the passage (6) provided in the bedding brick is associated with the nozzle (2); the nozzle is placed opposite the passage (6) in the bedding brick: the nozzle (2) is moved in axial translation so as to adjust the position thereof along the longitudinal axis of the passage and move the front face of the nozzle into a desired initial position; the nozzle is locked in this desired initial position; and, at least periodically, the nozzle is inserted further forwards into the passage in the bedding brick in order to compensate the wear in the front face of the nozzle. The invention can be used to prevent clogging, such as in a cement producing plant.

Abstract: An atomizer spray plate is provided for discharging fuel oil. The spray plate has a cylindrical rear portion and a conical front portion. A frusto-conical whirl chamber extends from the rear portion to the front portion with a decreasing radius. The rear portion includes a number of whirl slots extending radially inward from an outboard region of the rear portion to the whirl chamber to provide the fuel oil with rotational energy. A discharge slot is provided in the front portion of the atomizer spray plate for receiving the fuel oil from the whirl chamber with the rotational energy. The discharge slot includes a cylindrical through-hole with a diameter d, and a transverse slot having a semi-circular cross-section with radius r. The discharge slot can be easily and economically fabricated with two shaping steps since there is no need to precisely set any particular non-right angle for walls of the discharge slot.

Abstract: Spray equipment is used to apply fiberglass reinforced plastics onto mold surfaces. Such spray equipment includes a nozzle designed to allow flow of resin to a point of application as well as an outlet dispenser of small cut pieces of glass which aims the glass into the resin flow so that the resin and glass mix beyond the nozzle exit. A second nozzle is positioned below the resin nozzle and is angled slightly upwardly at the resin stream in the form of an air knife. The air knife causes the resin stream to uniformly spread permitting the chopped glass to fall within the resin stream and uniformly mixed therewithin for application to a mold surface.

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 jetting opening for jetting a washer fluid is formed on a jet fitted under pressure in a nozzle body installed on a hood of a vehicle. The jetting opening is formed on a bottom of cross-shaped grooves formed at a front part of the jet. The jetting opening is slot-shaped and extends in a lengthwise direction thereof and communicates with the domed portion positioned at a front portion of a fluid passage for feeding the washer fluid to the jet. The area of the jetting opening is reduced by a reducing portion positioned at the center of the jetting opening in the lengthwise direction thereof. Both sides of the reducing portion are symmetrical with respect to a line passing through the center of the reducing portion and extending in the lengthwise direction of the reducing portion. Thus, the jetting opening is gourd-shaped.

Abstract: A method for removing hard coatings from an underlying surface is shown and described. In a preferred embodiment, a nozzle having a particular geometry is used in a high-pressure fluid system to produce an ultrahigh-pressure fluid fan jet. The fan jet is traversed across a surface to be cleaned, thereby removing a layer of material without damaging the underlying surface. The effectiveness of the coating removal is improved by selecting an appropriate power distribution for the fan jet, a standoff distance between the fan jet and the surface to be cleaned, the speed with which the fan jet traverses the surface and the length and diameter of a settling chamber existing upstream of the nozzle.

Abstract: The system includes a jet, a rotating member or "eyeball" and a diverter cap formed with a number of bore holes positioned at a common radius from the center of the cap. The jet produces a high pressure water jet that flows through the eyeball causing it to rotate at a high speed and discharge the jet in a circular pattern that impinges on the bore holes. The bore holes are formed in the diverter cap so that the upstream intersection of the bore holes forms a series of ridges that divert the rotating jet into the appropriate bore hole(s) without blocking the jet and producing a back flow and are aligned with the rotating eyeball to minimize pressure losses experienced by the jet. Together the rotation speed and bore hole design produce the sensation of a number of simultaneously pulsating water jets that are directed into the spa or tub. The system has the added advantage in that its design results in low pressure losses.

Abstract: A method of conditioning a flow of fluid comprises the steps of introducing a fluid into a nozzle body having an opening defining an inlet, an opening defining an outlet, and an inner surface connecting the inlet and the outlet, directing the fluid introduced into the inlet of nozzle body over the inner surface, and applying a pressure to the fluid. The inner surface of the nozzle is asymmetric with respect to a centerline of the inlet to provide a first region outside the nozzle of relative maximum pressure and a second region outside the nozzle of relative minimum pressure, where the first and second regions are substantially the same distance from the outlet. A fluid-conditioning nozzle comprises an inlet having an edge defining a first circumference, an outlet, offset from and spaced apart from the inlet, having an edge defining a second circumference, smaller than the first circumference, and a transition surface extending between the inlet and the outlet.

Abstract: Apparatus and method for inserting fillings into foods such as bagels, donuts, other pastries and confectioneries. A base supports a movable platform onto which a restraining device are mounted for fixing a food to be filled in a fixed position. Coiled tubing is provided for insertion into the food and for conveying a filling material into the food. Coiled tubing may be inserted by holding coiled tubing in fixed position and rotating the food. Alternatively, the food can be held in a fixed position and the coiled tubing rotated into the food.

Abstract: The present invention is directed towards an apparatus for filtering particulate matter from a fluid. The apparatus is adapted to be placed within a bore of a housing, and in the preferred embodiment comprises a body member having a first end portion, a second end portion, and a middle portion disposed between the first and second end portions. A first flange and a second flange are connected to the first end portion. A third flange and a fourth flange are connected to the second end portion. A first fluid passing groove and a second fluid passing groove extend from the first end portion toward the second end portion. The first and second fluid passing grooves define a first web portion. A third fluid passing groove and a fourth fluid passing groove extend from the second end portion toward the first end portion. The third and fourth fluid passing grooves define a second web portion.

Abstract: A dispensing orifice for free-flowing, liquid condiments is provided. The dispensing orifice is adapted to be provided as a fitment for a container, especially for a bottle containing liquid condiments. The dispensing orifice provides for two modes of dispensing, a dropwise dispensing pattern, and a streamwise dispensing pattern.

Abstract: A flat-jet nozzle 1 for high-pressure cleaning apparatus has a nozzle mouth passaage formed by the intersection of a depression 21 with half-round base 22 shaped into a nozzle body 2 and a channel 6 leading to the nozzle mouth. In the zone of intersection with the depression 21, the channel has a spherically vaulted wall 12. The width b of the resulting passage .alpha. and the angle between the wall 12 bounding the edge 26 and the longitudinal axis 17 of the channel are dimensioned in such manner that a point defined by this value pair lies inside of a zone bounded by a hyperbolas. This tolerance range is given by the equation:(b-B).multidot.(.alpha.-.alpha..sub.o)=C,in which: the width b is measured in millimeters (mm) and the angle .alpha. is measured in degrees (.degree.), the constant B lies in the range between 0.785 mm and 0.875 mm, the constant .alpha..sub.O lies between 8.25.degree. and 17.25.degree., and the constant C lies in a range from 12.degree. mm to 13.degree. mm.

Abstract: A method of and apparatus for atomizing a liquid are disclosed, in which a liquid is caused to pass through tapered perforations (50) in a vibrating membrane (5) in the direction from that side of the membrane (5) at which the perforations (50) have a smaller cross-sectional area to that side of the membrane (5) at which the perforations (50) have a larger cross-sectional area.

Abstract: A fan pattern nozzle has an inlet groove on its inlet surface along a radius to a single edge of its perimeter. The water enters the orifice via this inlet groove. The water picks up a momentum which results in an exit deflection angle of about 15.degree. out the outlet groove. This nozzle enables the construction of an injection molded unibody washing cylinder having a maximum wall thickness of 1/4 inch. A plurality of nozzle mounting holes are canted at 15.degree. down toward the bottom of the washing cylinder. When the nozzles are installed in the mounting holes, the resulting fan patterns are canted 30.degree. toward the bottom of the washing cylinder, thereby improving the cleansing operation and minimizing the splashout. Washing embodiments include hand and glove, small parts, feet, whole body and cars.

Abstract: A laser beam machining system is provided whereby a distribution of flow velocity of an assist gas suited for high-speed cutting is obtained. A nozzle has a nozzle hole for emitting the laser beam and the assist gas therethrough. A helical groove is formed in the inner surface of the nozzle hole. The groove may be a V-shaped groove, that is, an internal thread-type groove. In the case of cutting a workpiece with the nozzle mounted to the laser beam machining system, the closer to the inner surface of the nozzle hole, the slower the flow velocity of the ejected assist gas becomes. Accordingly, the assist gas is ejected at high flow velocity only in the vicinity of the focal point of the laser beam, thus permitting high-speed cutting.

Abstract: An electrostatic spraying device for spraying liquids comprises a hollow capillary structure having a convoluted inner surface, one end of which contacts a reservoir of an electrostatically sprayable liquid preferably having a viscosity from 1 to 20.times.10.sup.-6 m.sup.2 /s and a volume resistivity from 2.5.times.10.sup.6 to 5.times.10.sup.8 ohm cm, the other end of which terminates in an atomization tip, and means for applying high voltage to the liquid in order to cause the liquid at the atomization tip to break up into a plurality of electrostatically charged droplets. Cartridges for use in the electrostatic spraying device are also described.

Abstract: A two-component spray nozzle, in particular for die spraying devices, comprising a nozzle inlet end for working medium and blast air as well as a nozzle outlet and, a blast air guiding portion having at least one blast air supply line connectable with a supply member for blast air, and a working medium guiding portion having at least one working medium supply line connectable with a supply mechanism for the working medium.

Abstract: A method of conditioning a flow of fluid comprises the steps of introducing a fluid into a nozzle body having an opening defining an inlet, an opening defining an outlet, and an inner surface connecting the inlet and the outlet, directing the fluid introduced into the inlet of nozzle body over the inner surface, and applying a pressure to the fluid. The inner surface of the nozzle is asymmetric with respect to a centerline of the inlet to provide a first region outside the nozzle of relative maximum pressure and a second region outside the nozzle of relative minimum pressure, where the first and second regions are substantially the same distance from the outlet. A fluid-conditioning nozzle comprises an inlet having an edge defining a first circumference, an outlet, offset from and spaced apart from the inlet, having an edge defining a second circumference, smaller than the first circumference, and a transition surface extending between the inlet and the outlet.

Abstract: A nozzle for accelerating compressed gas, preferably air, to supersonic speeds comprising converging, expansion, and straightening portions defined by a simple combination of arcs and a line segment for the general purpose of producing a supersonic jet to excavate or dislodge soil or other like material.

Abstract: A nozzle insert for a rotary rock bit has an orifice with a generally circular central region and a plurality of angularly spaced, non-circular outer regions around the periphery thereof so that flow of mud through each outer region develops a vortex pattern that increases entrainment of rock particles to prevent bit balling, and decreases overbalance pressure to enhance rate of penetration.

Abstract: A method is disclosed for sealing and bonding the seams and edges of resilient and other types of floors, whereby specially formulated hot-melt sealants/adhesives are applied in molten form at the flooring installation site using a heated gun equipped with a specially designed tip. The hot-melt sealant/adhesive flows into and completely fills the seam and bonds to the edges of the flooring producing a bead of material that extends above the surface of the flooring. The specially designed tip facilitates this process by guiding along easily in the groove of the seam or joint and directing the molten sealant/adhesive accurately into the seam. The tip allows the seam or joint width to be very narrow and enhances sealing and adhesion by imparting heat to the edges of the flooring material. Upon cooling, a spatula knife or other appropriate tool is used to skive off the excess bead of material leaving it flush with the flooring.

Abstract: The invention is directed to an air directing device for a hair dryer for acting upon the air stream exiting from the hair dryer, in which an air directing member (10) is configured as a substantially tubular body (12) having an inlet opening (14) and an outlet area (16) for the air. The air outlet area (16) comprises a plurality of individual orifices (18) configured and positioned such that the exiting air stream is split into a plurality of substantially independent free jets.

Abstract: A fluid injection nozzle having its components easily positioned and assembled. The fluid injection nozzle comprises: a first plate having a first slit-shaped hole for passing a fluid therethrough; and a second plate superposed on the downstream side of the first plate and having a second hole communicating with a portion of the first hole. A characterizing portion is formed in at least one of the first plate and the second plate at a portion other than the first hole or the second hole for discriminating the upstream and downstream sides.

Abstract: An improved fluid mixing nozzle and method, in which a first fluid flows therefrom to mix with a second fluid external the nozzle, for inducing vortex creation and chaotic turbulent flow. The nozzle has a body with a cavity extending therethrough from the inlet end to the outlet end. The cross sectional area of the inlet orifice of the nozzle is greater than its outlet orifice cross sectional area. The outlet orifice cross section area shape has a substantially circular central portion and at least one (but typically more than one) protrusion extending from the perimeter of the central portion. Generally, the protrusions are smaller in cross sectional area than the central portion, are equally spaced about the central portion perimeter, and have a length to width ratio from 1 to 2. Functionally applying the above described nozzle is a method of improved mixing, of creating chaotic turbulent flow, and of inducing vortex creation.

Abstract: A washer for a fruit processing machine includes a rotary nozzle paddlewheel gear mounted in a nozzle housing. The rotary nozzle paddlewheel gear meshes with combination gears which in turn mesh with a wash nozzle. Fluid pumped into the housing drives the gears and blows out through the rotary wash nozzle creating a spray pattern. As the rotary wash nozzle completes a revolution, a hemispherical or larger region is sprayed by the fluid, cleaning the equipment to be washed.

Abstract: A water extractor and nozzle for spraying fluid in an even distribution across a predetermined area. The nozzle comprises a tubular body with an axial fluid channel, which intersects a nozzle opening through which the fluid is sprayed onto the surface being cleaned. The nozzle opening is defined by opposed sidewalls connected to opposed end walls. The sidewalls are concave outwardly. The sidewalls and end walls define the spray coverage area and the shape of the opening controls the distribution of the fluid across the spray coverage area.

Abstract: A hand holdable spray delivery system for dispensing a fluid is provided. This spray delivery system includes a container adapted to house the fluid. The fluid being relatively viscous and preferably also being solids laden. A manually actuated pump device is mounted on the container. The pump device including an inlet passage, a pump chamber, and a discharge passage having a distal end connected in fluid communication so that the fluid is pumped from within the container, through the inlet passage, into the pump chamber and through the discharge passage upon manual actuation of the pump device. A spray nozzle including a housing having an inlet side and an exit side is also included. The housing having an internal recess through the inlet side that terminates in an elongated orifice at the exit side.

Abstract: An internal combustion engine that is driven by dimethyl ether (DME) and a storage and delivery system for the DME that will reduce considerably the emissions of NO.sub.x and particulate. Existing internal combustion engines, fueled by conventional fuels can be economically converted to the use of DME as a fuel.

Abstract: A fuel atomizer using a spray plate, for a highly spun liquid fuel is described for generating spaced apart fuel rich zones separated by a fuel lean zone by forming a slot in an outer domed surface of the spray plate. The shape of the domed surface is selected so that the spinning fuel, which is also under a high pressure, is permitted to preferentially expand in the direction of the ends of the slot while increasingly spilling over a wall bounding the slot. With a fuel atomizer in accordance with the invention substantial reductions in the generation of thermal NOx can be achieved in boilers when the fuel atomizer is placed within a flame stabilizer.

Abstract: A liquid fuel injector nozzle has a body terminating at one end in a plurality of substantially tear drop shaped discharge outlets through which fuel may be discharged in a spray and in such manner as to produce spaced apart vena contracta. The nozzle is produced by providing a cylindrical extension at one end of the injector body and forming a plurality of axially extending, circumferentially spaced slots in the extension to produce alternating slots and fingers. The tips of the fingers are deformed into engagement to convert the extension to conical configuration, thereby producing the tear drop shaped openings.

Abstract: This invention relates to a novel, multisegmented nozzle for dispensing viscous materials, particularly for dispensing differently colored toothpaste into toothpaste tubes so as to produce toothpaste of striped appearance when dispensed from the tube. The nozzle has a tubular body defined by an outer body wall, and has within the tubular body a central channel and a plurality of longitudinal first and second side channels situated around the central channel. The first side channels have a cross section which narrows towards the central channel; the second side channels have a rectangular cross section. Because of this configuration the nozzle is able to load multicolored toothpaste tubes which dispense toothpaste in a substantially more uniform striped pattern than conventionally loaded multicolored toothpaste tubes.

Abstract: A venturi nozzle for high entrainment vacuum use for random orbital sander dust collection having a nozzle design which improves the nozzle jet to promote a uniform velocity profile across the diameter of the jet nozzle as well as a thin shear layer by providing a shallow angle nozzle approach, a smooth transition flow into the nozzle throat and an accurate nozzle departure radius.

Abstract: An atomizer for atomizing a high solids soil paste containing pebbles or agglomerates includes an inner conduit for channeling the paste and an outer conduit surrounding the inner conduit whereby the outer conduit and the inner conduit define an annular space therebetween in which a flow of compressed air is channeled in the space. The inner conduit and the outer conduit have a discharge end which is connected to a discharge spraying head made of a wear-resistant and a high temperature-resistant material such as tungsten carbide. The spraying head has three walls which accommodate a flow plate which is connected at the top of the first wall and third wall for defining a rectangular opening of the spraying head. The flow plate has two air passages cut therethrough, which are also rectangular, which channel air from the annular space into the spraying head for dispersing the soil paste into an atomized spray which is discharged out of the opening.

Abstract: A water spray gun including a plurality of small holes extending through an annular recess on the inside of the spray-pattern dial and around the border of the dial for producing a broad spray of fine drops of water. One nozzle on the spray-pattern dial has a 45.degree. sector-like through hole for producing a smooth downward flow of water for watering plants without changing the holding position of the spray gun. A spring-supported locating rod is received in a radial recessed hole on a housing to hold the spray-pattern dial in the selected spray-pattern position, and a control lever locking device having side projections for operation by the thumb is provided to lock the control lever in the depressed position.

Abstract: A fluid injection nozzle according to the present invention comprises a first plate having a first hole through which fluid is allowed to flow in, a second plate disposed in layers on the downstream side of the first plate and having a second hole partially communicating with said first hole and tapered toward the downstream side, and a space which is formed between an outlet of the first hole and an outlet of the second hole and in which a liquid film is formed by the fluid which collides with an inner wall surface serving to form the second hole.

Abstract: A fuel nozzle for gas turbine combustors reduces combustion instabilities by injecting purge air into the combustor angularly instead of axially. The fuel nozzle has a substantially cylindrical body with a number of internal passages. One of the passages provides premix gas fuel to a plurality of fuel injectors attached to the fuel nozzle. The remaining passages can be for diffusion gas, atomizing air and liquid fuel. One or more of the remaining passages is connected to a respective group of discharge orifices formed in the cylindrical side surface of the nozzle body. During low NO.sub.x operation, premix gas is introduced through the fuel injectors, and the remaining passages are all purged with air to prevent the ingress of flame gases from the combustion chamber. The resulting jets of air emitted from discharge orifices formed in the side surface will disrupt or break-up spanwise vortices shed from the bluff end of the fuel nozzle, thereby reducing combustion instabilities.

Abstract: A method and system for cutting kerfs in rock is shown and described. In one embodiment, a single fan jet is mounted in ultrahigh-pressure tubing. In an alternative embodiment, a manifold in which two fan jets are mounted is coupled to a manifold in which two round jets are mounted, such that the twin fan jets are directed so as to cover the entire width of the kerf and the round jets are directed towards the edges of the kerf to cut out a well defined kerf. In another alternative embodiment, an angled fan nozzle is mounted in ultrahigh-pressure tubing and combined in a system with another angled fan nozzle mounted in ultrahigh-pressure tubing such that the angled fan jets may be directed at opposite walls of a kerf to carve out a well defined kerf of a desired depth.