Abstract: The mounting of a component subjected to pressure from a fluid requires special precautions if the component is made of wear resistant, hard and hence generally brittle material and may be destroyed by locally raised stresses. A fluidic component of this kind, made, for example, of silicon/glass is arranged in an elastomeric shaped component, made, for example, of silicon rubber. The inner contours of the elastomeric shaped component correspond to the outer contours of the fluidic component. The outer contours of the shaped component corresponds to the inner contours of a holder. Due to this “floating mounting” there are no unacceptable local pressure peaks and no deformation of the fluidic component. The device is particularly suitable for mounting a fluidic component made of glass or silicon, or miniature dimensions, subject to high pressure.

Abstract: A nozzle assembly including a nozzle unit, first and second sleeves and a clamp. The nozzle unit has an aft collar and a tapered inner fluid contact surface, tapering to gradually increase the velocity of fluid passing therethrough. The inner surface is formed of an elastomer material that deforms by eddies in the fluid and thereby does not build turbulent flow. The clamp encircles a rearward fitting of the first sleeve and a forward fitting of the second sleeve, holding them together with the collar sandwiched therebetween.

Abstract: A shower device having a flexible, flat jet or spray disk is created, in which at least one surface zone is curved outwards and on exceeding a specific pressing in force (E) exerted thereon springs round suddenly with the curvature inwards into a space located behind it and automatically springs back to the starting position when the force is relieved. As a result of the springing or springing round, it is possible to detach lime deposits from the jet disk.

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: Microchannels for conducting and expelling a fluid are embedded in a surface of a silicon substrate. A channel seal is made of plural cross structures formed integrally with the silicon substrate. The cross structures are arranged sequentially over each channel, each cross structure having a chevron shape. The microchannel is sealed by oxidizing at least partially the cross structures, whereby the spaces therebetween are filled. A dielectric seal which overlies the thermally oxidized cross structures forms a complete seal and a substantially planar top surface to the silicon substrate. The dielectric seal is formed of a low pressure chemical vapor deposition (LPCVD) dielectric layer. The channel is useful in the production of an ink jet print head, and has a polysilicon heater overlying the dielectric seal. A current passing through the heater causes a corresponding increase in the temperature of the ink in the microchannel, causing same to be expelled therefreom.

Abstract: A spray nozzle assembly composed of a support member defining a product flow path for conducting a flowable product which is to exit the nozzle assembly in the form of a spray; a spray nozzle member providing a spray opening communicating with the flow path, the spray nozzle member being operative for emitting the flowable product from the spray opening in a form determined by the size and shape of the spray opening; and a holding member for holding the spray nozzle member in position relative to the support member, wherein the spray nozzle member is made of an elastic material which is deformable in a manner to vary the size of the spray opening, and the holding member is movable relative to the support member for deforming the elastic material of the spray nozzle member to vary the size of the spray opening.

Abstract: This invention teaches a slidably attaching water flow limiting device which utilizes elastic and frictional forces to apply a force holding the flow limiting device onto a faucet such that these forces are exceeded at excess flow into the interior chamber of the water limiting device causing it to blow off the faucet. The water flow limiting device through a shaped hole restricted in area also provides a cleaning jet which makes the reduced flow effective for cleansing purposes despite the reduced flow rate.

Abstract: A control device for an adjustable fluid jet having a piston arrangement with a through bore communicating with at least one through recess of an elastic element. A thrust bolt enters a jet tube arranged in a fixed manner at the jet head. A following control piston limits a pressure chamber supplied with the pressure medium on the other side of the thrust bolt. A sealing plug projects from the opposite end of the thrust bolt and exhibits a smaller diameter and enters in a sealing manner into an opening that departs from the pressure chamber and is supplied with the fluid to be processed.

Abstract: In a device to produce a fluid jet (14), especially to apply glue (12) and/or a soft fluid (13) onto a web with a nozzle head (5) which bears a nozzle (6) provided with a discharge port (34) arranged at one end of a conduit (33) loaded with the fluid (12, 13), control of the fluid jet cross-section is achieved in a simple and low-cost, in that an elastic element (18) is provided for in the area of the discharge port (34), which features a through opening (17) communicating with the conduit (33) and which (18) is mounted between two compression elements (19, 20) which can shift in relation to each other.

Abstract: A nozzle for use on opposing ends of the rotor of a jet powered tri-mode aircraft is disclosed. The nozzle includes two thermally-controlled doors, which are moveable between an open configuration where hot jet engine exhaust is vented therethrough to propel the rotor in a helicopter mode, and a second closed configuration where the two doors are tightly sealed to provide a stable aerodynamic surface for the rotor when the jet powered tri-mode aircraft is operating in an airplane mode. The two doors are thermally-activated by an internal surrounding temperature, such that they remain open by the hot jet engine exhaust passing thereby in the helicopter mode, and remain shut by resulting cooler air when the hot jet engine exhaust is not routed by the two nozzle doors.

Abstract: In a known manner, a shower head, particularly for a hand shower, has a bell-shaped housing, which is closed off at the bottom by a shower base (1) and in which at least one water chamber is formed which connects with a water supply channel. The shower base (1) contains a large number of water outlet openings (15), which are made on hose-type jet attachments (11). The hose-type jet attachments (11) extend from a smooth, unbroken, continuous outer surface of the shower base (1) which is free of indentations apart from the water outlet openings (15) into the inside of the housing. In so doing they pass through a hole (3) in the shower base (1), the diameter of which is larger than the outer diameter of the jet attachment (11). In this way, there is formed round the jet attachment (11) a clear circular space (13) which does not open in the outer surface of the shower base (1) but in its inner surface.

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

Abstract: The spray, serving, in particular, as a dishwashing spray, exhibits, as essential elements, a connection stub (12), a handle (10), a shut-off valve (14) and a spray head (16). The shut-off valve (14) can be actuated, by means of a hand lever (18), counter to the force of the spring (14j). The handle (10), the shut-off valve (14) and the hand lever (18) are enclosed by an elastomeric covering (20) which is sealed towards the outside and provides the hand lever (18) with free play. Such a configuration is particularly hygienic since the covering (20) can be easily washed and it does not exhibit any inaccessible gaps in which contaminants can be deposited.

Abstract: A shower head with a spray plate mounted on the housing has water passage openings and a further plate made of elastic material which has openings coaxial to the water passage openings. The further plate is fitted over the outside of the spray plate which presses against it. Nozzle projections with exit openings are formed coaxial with respect to the openings which have a smaller diameter than the water passage openings.

Abstract: An improved and tunable ultrahigh-pressure nozzle for use in generating ultrahigh-pressure fluid jets is shown and described. In a preferred embodiment, a nozzle body is provided with a first conical bore that extends from an entrance orifice to an exit orifice, the bore transitioning into a second conical bore that is formed in a seal. The seal is formed to capture a nozzle orifice and position it in the nozzle body adjacent the exit orifice. By selecting the geometry of the nozzle, namely the diameter of the entrance orifice, and an included angle of the first and second conical bores, it is possible to optimize performance of a fluid jet generated by the nozzle for a selected task and operating parameters.

Abstract: The shower base (1) of a shower head consists of a rigid perforated plate (1a), which has a number of holes (4, 5). Set into each of the holes (4, 5) in the perforated plate (1a) is a hose-type jet insert (6, 8) made of a flexible material which, owing to its material properties, can be flexed automatically to dislodge limescale deposits. The outer surface of the rigid perforated plate (1a), i.e. the surface of the shower base (1) which is visible to the user from underneath, is essentially completely covered by an impact resistant plate (1b) which is also made of a soft, flexible material. Of course the impact protection plate (1b) has collar-shaped lugs (12) going through it which are preformed on the perforated plate (1a) and which surround at least those hose-type jet inserts (8) which produce the high-power jets owing to their relatively narrow jet channel (9).

Abstract: The shower base (1) of an otherwise conventional shower head comprises a perforated plate (1a) made of a rigid material and a jet insert (1b) which is made of a flexible material and which is attached to the perforated plate (1a) in such a way that it can be removed. The jet insert (1b) consists of a base plate (9) which extends along the outer surface of the perforated plate (1a) and protects it against impact damage. There are preformed on to the base plate (9) of the jet insert (1b) a number of hose-type jet attachments (10) each of which extend through a hole (3) in the perforated plate (1a), going from outside in, in fact, such that the free ends of the jet attachments (10) are located inside the shower head. The jet insert (1b) has a locking device (32), with which it is secured to the perforated plate (1a) in such a way that it can be removed.

Abstract: A water sprinkler of a new type has a spray arm which oscillates about a horizontal axis transverse or perpendicular to the length of the spray arm, in a see-saw fashion, to distribute water to a length of the lawn or garden area. Spray nozzles spaced apart on a distortable, peripheral wall along the length of the spray arm in a linear array are adjustable, by twisting the peripheral wall of the arm, to a circumferentially-arrayed, helical or spiral pattern, to distribute water to cover a selected width of the lawn or garden area. Both the angle of the oscillation and the twist of the wall may be selectively varied or adjusted to select respectively the length and the width of the area to be sprinkled. The twist is adjustably-fixed along and about the flow passage, as by an internal twist-setting arm. Also, the spray arm may oscillate about its center or one end thereof, depending on the oscillation mechanism used.

Abstract: The shower base (1) of a shower head consists of a rigid perforated plate (1a), which has a number of holes (4, 5). Set inside each of the holes (4, 5) in the perforated plate (1a) is a hose-type jet insert (6, 8) made of a flexible material which, owing to its material properties, can be automatically flexed to dislodge limescale deposits. The shower base (1) is sealed against the rest of the shower head, in particular against its housing (2) by means of one or more seals (25, 29). This/these seal(s) (25, 29) is/are made of the same material as the jet inserts (6, 8) and is/are manufactured jointly with these, for preference connected in one piece. In this way, it is not necessary for the seals (25, 29) to be manufactured, kept in store and assembled separately.

Abstract: The showerhead of the present invention permits the removal of damaging water deposits, such as lime deposits, without causing damage to the surrounding showerhead portion on which the deposits are located. The showerhead includes a bottom portion with resilient extended portions associated with water exit ports of the showerhead wherein said resilient portions can be manipulated for removal of lime deposits from water. Specifically, the bottom portion of the showerhead may include a projection member extending along the periphery of the showerhead. The bottom portion may also comprise a membrane member including a plurality of water passage openings therethrough.

Abstract: A hand holdable spray delivery system for dispensing a relatively viscous and/or solids laden liquid is provided. This spray delivery system includes a container adapted to house the liquid. 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 liquid communication so that the liquid 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 slotted 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: A shower head includes a housing enclosing a first rotary valve member driven by a turbine wheel and gear reducer for cycling the flow rate through the housing between high and low flow rates, and a manually rotatable cross valve shaft provides for selecting the degree of cycling. A second rotary valve member is combined with a second turbine wheel for pulsating the cycling flow rate, and further rotation of the valve shaft provides for hydraulically shifting and stopping the second valve member for bypassing the pulsation to provide a full continuous water flow. Water is discharged from the shower head through flexible tubes arranged in groups which are twisted in response to rotation of a control ring for selecting a spray pattern between a tight penetrating pattern and a wide full pattern.

Abstract: An improved atomizer removes deposits from the end cap. The atomizer housing carries a flow of atomizing slurry. A spraying head is connected at one end of the housing and an end cap is connected to the spraying head. A plurality of exit orifices are provided in the end cap for discharging atomized slurry into a flue gas. A connecting ring is detachably engaged with the end cap and has a elastomeric diaphragm for covering an outer surface of the end cap. Energizing fluid is provided through the sprayer head and end cap for expanding the diaphragm away from the end cap surface for releasing particles which adhere to the diaphragm.

Abstract: The specification discloses an apparatus for automatically measuring out and discharging desired quantities of fluid such as lubricants or coolants and the like from a self-contained supply of the same, and for pneumatically dispersing the measured quantities of fluid into and propelling it through either a common or a coaxial tube. The dispersed fluid is applied to a desired object or article, in particular a cutting tool, workpiece, operating tool, or the like, at a remote end of said tube, in the form of a pneumatic dispersion or mist of said lubricant, coolant, or other fluid.

Abstract: A soldering tip overcomes the gravitational effects on molten solder and supplies a large molten solder sphere for contact with a surface to which solder is to be applied. A conical or cylindrical spiral or helix of solder-wettable material, preferably in the form of a compressional spring is attached to the soldering tip with the central axis of the helix aligned with the axis of the soldering tip, preferably by welding. Solder supplied to the soldering tip flows between the coils of the helix and forms a meniscus at the lower end of the helix so that only the molten solder meniscus touches the surface during application of solder. The increased surface tension acts to overcome gravitational effects and assures a more even flow of solder to the surface.

Abstract: A shower head has a rigid body forming a pressurizable compartment having a downstream wall of composite synthetic-resin material having an inner face and formed with an array of throughgoing holes so that pressurized water in the compartment will exit therefrom through the holes. A unitary liner sheet of a soft elastomer has an outer face bonded to the inner face of the downstream wall and is formed with respective tubular nipples fitting in and projecting through the holes. Each nipple forms a throughgoing passage having an inner end opening in the compartment and an outer end opening outside the body. The liner sheet and integral nipples are molded in situ against the inner face of the plate forming the downstream wall of the shower body. The composite synthetic-resin material is a polybutyleneterephthalate and the elastomer is silicone or the composite synthetic-resin material can be polypropylene and the elastomer a thermoplastic.

Abstract: Gas injector nozzle comprising a discharge chamber with a cylindrical inner wall and having at its outlet end a circular gas discharge orifice, an outer wall concentrically surrounding the inner wall, the outer wall following a continuously curved path at a region 1 at the chamber outlet end and being joint sharp-edged with the inner wall at the discharge orifice, wherein the curved path has a curvature radius R complying with the relationship: ##EQU1## where 1 is as defined above,t is the maximal horizontal distance between the inner and outer wall, and.alpha. is the tip angle of the edge at the discharge orifice.

Abstract: A nozzle mechanism (10) comprising a flexible barrel (13) annularly spaced about a fluid jetting tube (12) apertured as at (16) to a rear tubular portion (15), a manipulative sleeve (33) on the barrel (13), and a valve control member (24) to open and close its valve (28) aligned with aperture (16). Valve control member (24) includes a pin 29 operatively connected to the sleeve (33) via a slot (30) in barrel (13), so that manipulative motion of sleeve (33) opens and closes valve (28), as well as locking open valve (28) by reason of pin (29) being retained in a catch (31) on slot (30) in flexible barrel (13).

Abstract: An apparatus for dispensing liquids which harden in the presence of ambient atmospheric conditions includes a housing for receiving one or more liquids and rotating rollers having roller surfaces which define an orifice through which the liquid is dispensed. A doctoring surface continuously cleans the roller surfaces to eliminate clogging of the orifice or the deposition of hardened material on the housing.

Abstract: A liquid sprayer apparatus of the type in which liquid is caused to flow from a liquid supply tank, through a spray conduit, to a spray nozzle assembly. The spray nozzle assembly comprises: an adapter mounted to the spray conduit; and a spray nozzle holder; and a spray nozzle configured to produce a flat fan spray pattern. The nozzle is received in the nozzle holder, and the holder is coupled to the adapter such that the nozzle adjoins the adapter in a secure assembly. A self orienting indexing system, associated with the adapter and the nozzle, orients the nozzle in either one of two orthogonal bearing positions relative to the adapter upon the coupling of the holder to the adapter. The self orienting system includes a plurality of indexing holes contained in the adapter and a plurality of matching indexing spurs projecting from the nozzle.

Abstract: A fuel-injection nozzle for internal combustion engines having plurality of lip elements on a nozzle tube, the edges are adjacent to each other. The lip elements form an obtuse cone and are held together under a high pre-stressing pressure by a clamping sleeve and an end cap. Pressure build-up in the interior chamber of the nozzle tube elastically expands the lip edges, in which case gaps are created, which form flat spray streams through which fuel is sprayed into the combustion chamber of the engine. When the fuel pressure in the interior chamber subsides the lip edges close to prevent any dirt from entering the slits.

Abstract: An emitter is provided with a flexible diaphragm of elastomeric material containing at least two slits which radiate outwardly from a point near the center of the diaphragm, the diaphragm being assembled in the emitter body in the manner of a gasket, and the diaphragm having characteristics of durometer hardness and flexibility such than when in use the diaphragm is distended and the slits open to establish an orifice which allows an outflow of irrigating water at a low discharge rate, but when the pressure is removed the resilience of the diaphragm closes, the faces become contiguous and close the orifice, thereby preventing ingress of insects and egress of moisture.

Abstract: A liquid distribution device and method for distributing liquid uniformly is disclosed. A coating liquid is supplied to a distribution cavity from both sides of the cavity through a delivery line. The cavity is a slot which expands from the length at the liquid entrance of the cavity to a longer length at the cavity exit. The two streams of liquid impinge against each other inside the cavity and spread out along the contour of the cavity. This liquid distribution system eliminates recirculation regions and does not experience problems with variable residence time and distribution across the slot.

Abstract: In a sprinkler head comprising a sprinkler body (1) and a sprinkler base (4), the nozzle wall of the sprinkler base (4) is the fixed supporting plate (8) of a rubber-elastic nozzle plate (11) resting on it. The nozzle plate (11) comprises a plurality of elastic nozzle projections (12) formed on it which engage in receiving bore holes (9) of the supporting plate (8). The axial length of the elastic nozzle projections (12) in relation to that of the receiving bore holes (9) is such that their elastically deformable ends always project beyond the outer surface (14) of the supporting plate (8). Furring of the nozzle projections can easily be removed by exerting a slight external force on the elastically deformable ends. Nevertheless, the spray-forming outlet ends of the nozzle projections (12) are so thick-walled and of such material quality that they withstand ordinary water pressures and therefore have good spray guidance properties.

Abstract: An orifice assembly for emitting a stream of fluid under high pressure has an orifice member having an aperture therein through which a high pressure fluid is emitted, a support member on which the orifice member is disposed, the support member providing support for the orifice member and being flexible in response to the application of high pressure fluid to the orifice member and having a passageway therein in communication with the aperture in the orifice member. Because of the flexing of the support member on which the orifice member is disposed, the orifice member is allowed to move in response to the application of the high pressure fluid, reducing damage to the orifice member due to shock from the high pressure fluid, particularly when cycling on and off. A housing has an opening for receiving the orifice member and support member therein, and a retainer holds the orifice member and support member in the housing.

Abstract: A pneumatic cleaner for textile machinery adapted to travel along the length of endwise-aligned machines in which yarn spindles have whirl-cleaner blades to strip the turns of yarn from the whirl. The cleaner has exhaust tubes having at least one exhaust port for blowing cleaning air into the machinery. One of the exhaust tubes has a retractable and extendible nozzle to direct the cleaning air against each whirl-cleaner blade and to displace said blade end into engagement with the whirl of each spindle as the cleaner passes the spindle. The nozzle is extended into close proximity to each whirl-cleaner blade by the flow of cleaning air and is retracted from said whirl-cleaner blade when flow of cleaning air is stopped. The flow of cleaning air is controlled with the travel of the cleaner, so that the nozzle is retracted to avoid interfering with other parts of the machinery when it is not needed to actuate the blades.

Abstract: A shower head has a body having a wall and forming therewith a pressurizable compartment. This wall has an inner face in the compartment and an outer face and is formed therebetween with an array of throughgoing perforations. Respective flexible tubular extensions are provided on the outer face of the wall at the perforations. These extensions can be deformed to flake off lime formations adhering to the extensions. The extensions can be unitary with the wall, in which case the wall is made of an elastomer, or respective tubular liners in the perforations having outer ends projecting past the outer face can form the respective extensions. In this case each liner can have laterally projecting inner and outer ridges respectively bearing against the inner and outer faces of the wall. Furthermore each liner has a predetermined diameter of between 1 mm and 2 mm, preferably 1.2 mm, and each extension extends beyond the outer face by a distance generally equal to the respective diameter.

Abstract: A pneumatic nozzle for use in an apparatus for cleaning textile machines comprises a frustum-shaped flattened tubular body made of a flexible material. The tubular body is inflatable upon flow of pressurized air therethrough whereat the tubular body takes a straight position, and deflatable upon ceasing of air flow therethrough whereat the tubular body takes a fall-down position. A neck is formed at one of the opposite ends of the tubular body and is associated with retaining and coating rings for securing the nozzle in a wall of blowing hose apparatus of the cleaning apparatus.

Abstract: A mixing and dispensing nozzle adapted for attachment to an associated two or more component liquid dispensing gun for mixing and dispensing liquid foamable products which use reduced HFC, CFC or non-CFC or HFC foaming agents. The nozzle includes an internal mixing chamber having a mixing chamber outlet member which provides an outlet for foam mixed within the nozzle mixing chamber. The outlet tube has a tip portion with a re-entrant portion which extends rearwardly to define a generally V-shaped groove having an included angle.

Abstract: A sheet feeder of a sheet-fed rotary printing press is provided with loosening blowers having controllable blowing power and being disposed so as to be adjustable in height on a frame of the sheet feeder behind and at the sides of a pile of sheets and including a plurality of fans for directing an air flow against a side face of the pile of sheets, the air flow being adjustable angularly with respect to the side face.

Abstract: A self-adjusting orifice for fluids nozzle includes a membrane constructed of a single piece of flexible or elastic material. This flexible material is shaped to fit into the outlet of a nozzle. The body of the membrane has at least two flow channels, from one face to the other, which directs two streams of water to cross at the opening of the nozzle or at some point beyond. The elasticity and thickness of the membrane is selected to match the range of expected pressures and fluid velocities. The orifice may have more than two flow channels, as long as they are aligned adjacent to one another and directed towards each other at the exit face. In a three orifice embodiment, one is directed upward, one is directed downward, and the one in the middle is directed forward. In this embodiment all three fluid streams intersect at some point past the nozzle opening.

Abstract: A windshield cleaning system with a spraying device is described, in which windshield cleaning system a jet element made of an elastic material is carried in an adjustable jet body formed in the shape of a ball. The jet element is formed with elastic lips forming a spraying mouth which is normally closed and which is located outside of the jet body. The spraying mouth is opened by the pressure of the washing liquid. With such an arrangement the direction of the spraying jet can be adjusted and the washing liquid is prevented from freezing due to the fact that the spraying mouth can be closed.

Abstract: A drip irrigation emitter head assembly is described which comprises a body member having a tubular inlet portion adapted to connect with a water supply conduit. The body member includes a circular wall surrounding the tubular inlet portion forming a plurality of passages having open upper and lower ends. A flow control device in each passage forms a constricted emitter orifice. A cap connected to the body member covers both the tubular inlet portion and the surrounding upper ends of the passages. A removable filter retained between the cap and the body member filters water before it enters the passages at their upper ends. Flexible distribution tubes are connected to the lower ends of at least some of the passages in the body member for carrying fluid to preselected locations at their outer ends.

Abstract: An air diffuser for a hair dryer having a porous diffuser face, panels secured to the diffuser face and to one another to form a plenum chamber. A spout is attached to the plenum chamber on the side opposite the diffuser face. When the spout is fitted about the air outlet of a hair dryer, the air will pass through the plenum chamber and be diffused as it passes out through the diffuser face. The face and the panels are formed of flexible, plastic sheet material.

Abstract: A fluid discharge device comprises a nozzle. The nozzle is constructed from a first jewel such as a corundum or diamond. An aggregation of ions formed from a second material such as nickel, titanium or chromium are implanted onto a surface of the nozzle, whereby a useful lifetime of the nozzle with a fluid passing through the nozzle under high pressure, is increased.

Abstract: An apparatus and method for the elimination of marine fouling of marine mechanisms such as underwater fluid distribution emission systems. A grommet nozzle made of plastic materials containing an antifoulant and having a capability of easy installation forms a basic part of the apparatus. The grommet nozzle of the invention is formed of a polymer or a mixture of polymers containing a material toxic to calcareous marine organisms and capable of release of the toxic material into the environment at such a rate that the marine organisms grow extremely slow, yet the release rate is not sufficiently fast to be a toxic hazard to the surrounding environment.

Abstract: A garden hose spout having a hand compressible bellowed conduit provides convenient and precise control over water flow.

Abstract: A conduit and an integrated system for utilizing same, such as a foam control spray system for a sewage treatment facility, where said conduit is exposed to a hostile environment, such as solar ultraviolet (U.V.) radiation. The conduit and transmission components of such system comprise tubular members consisting of a solar U.V. degradable plastic, such as polyvinylchloride (PVC), having a preferred outer layer of metallic zinc diffusion bonded thereto, such as by spray arc metallizing the zinc onto the plastic surface, whereby the zinc prevents deterioration or breakdown of the plastic from solar U.V. radiation.

Abstract: A laminar flow cooling system employs a laminar flow nozzle comprising a pair of plate members defining slit through which cooling water flows to form a cooling water screen. One of the plate members of the laminar nozzle is deformable at least in a direction perpendicular to the cooling water flow direction to adjust the path area in the nozzle. At least one of the plate member is preferably responsive to the cooling water pressure to cause variation of the path area for adjusting the cooling water path area.

Abstract: A nozzle, for use in a gas-operated spraying apparatus such as an airbrush, is disclosed. The nozzle locates concentrically within an air cap in the gas outlet of a spraying apparatus and cooperates with a tapered needle located in an axial passage thereof to seal the outlet of the nozzle. The needle is retractable in the nozzle to dispense a medium such as paint to be sprayed.