Abstract: An emitter (30) has a body section (40) and an outlet chamber member (50). The outlet chamber member (50) has wings (52, 53) that have free ends. The free ends are deformable to form a number of varying sized diameters so that the emitter (30) may be used in various diameter conduits (100). The emitter (30) may also have a deeper well portion for use in attaching a fitting (90) thereto. The emitter (300) has a first chamber (332) and a second chamber (352) which also provide for a deeper portion for use in attachment of a fitting (90) thereon.

Abstract: An apparatus and method for releasing pressure and draining a high pressure water system includes a valve comprising a valve body having an inner cavity for water to flow therethrough, an inlet opening and an outlet opening in fluid connection with the inner cavity, a valve seat assembly comprising a first biasing member exerting a force against a valve plunger cooperating with a seal to thereby substantially close the valve at or above a predetermined system pressure, and an override comprising a manual activator having a second biasing member and a cooperating member positioned to transmit to said valve seat assembly a force applied by an operator, to thereby manually open the valve when pressure exceeds the predetermined system pressure.

Abstract: A simply constructed and easy-to-produce nozzle valve (1) for oil spraying of pistons in internal combustion engines is provided. The nozzle valve (1) is formed from a thin-walled sheet-metal housing (2), a nozzle (12), a valve body (8), and spring means (10) for the valve body (8). The spring means (10) act at one end directly against the valve body (8) and rest at their other end against a support (11) extending within the housing (2). This support (11) forms a single structural unit together with the nozzle (12).

Abstract: An improved manually operated plant watering device is provided for watering plants in hard to reach places. The plant watering device includes an elongate hollow tube, flexible hose, and nozzle. Located within the hollow tube is a piston manually controlled by a handle for drawing water to within the elongate hollow tube or for projecting water from the elongate hollow tube through the flexible hose and nozzle. In a preferred embodiment, the plant watering device includes an extension pipe for extending the overall length of the plant watering device. Furthermore, preferably the plant watering device includes an impedance valve for impeding unwanted flow of water from the plant watering device.

Abstract: In a window and lens glass cleaning system for a window/lens glass of a motor vehicle, a washer nozzle, a heating element and a nonreturn valve are in each case arranged on or in a retaining part. The retaining part is fastened on a wiper arm which can pivot over the window/lens glass. The invention largely prevents washer fluid in the washer nozzle from freezing.

Abstract: A fluid-activatable shut-off device, configured as a shut-off valve, has a valve housing formed with a flow passage therethrough and a movably supported valve body, which is movable between an open valve position and a closed valve position. In the open valve position, the valve body is mainly withdrawn from the flow passage, which is thereby essentially cleared. In the closed valve position, the valve body blocks the flow passage. The valve body is arranged to close the valve by abnormal flow conditions by a portion being formed so that the flowing fluid provides a lifting force which affects the valve body and seeks to move it towards the closed position. The valve body may thereby close by an abnormal increase in the fluid flow rate, density or viscosity. The portion may also be supported by an expansion pad arranged to push the lifting surface further into the flow passage as a consequence of changes in the fluid pressure and/or temperature, thereby providing increased lift so that the valve body closes.

Abstract: A windshield washer nozzle for an automotive vehicle, including a housing for retaining the nozzle, at least one fluid input port defined by the housing; and at least a first flow path and a second flow path defined by the housing in fluid communication with the fluid input port. Separate pressure flow control valves are retained in the first flow path and the second flow path, wherein fluid at a pressure below a pressure P1 can be directed through the input port and caused to flow through the first flow path, although flow is blocked through the second flow path. Alternatively, fluid in excess of a pressure P2 can be directed through the input port and caused to flow through the second flow path while flow is blocked through the first flow path.

Abstract: In a window and lens glass cleaning system for a window/lens glass of a motor vehicle, a washer nozzle, a heating element and a nonreturn valve are in each case arranged on or in a retaining part. The retaining part is fastened on a wiper arm which can pivot over the window/lens glass. The invention largely prevents washer fluid in the washer nozzle from freezing.

Abstract: A nozzle beam for descaling or cooling metal strand material, particularly rolling stock, includes an inlet for the product treatment liquid and an additional inlet for a device cooling liquid, an outlet for the device cooling liquid, and a switching member for opening and closing the device cooling liquid outlet. The switching member is automatically switchable through a device cooling liquid pressure which controls the state of operation of the nozzle beam.

Abstract: A gasket for use in an electromotive diesel fuel injector. The gasket is made of a polymeric material and is adapted to be received by a filter nut of the fuel injector.

Abstract: A valve device, in particular a window and lens cleaning device in motor vehicles, comprising a housing (1) with a duct (2) and at least one nozzle (3), and also a tubular connecting piece (4) for feeding a pressurized fluid, in particular a cleaning liquid, into the duct and to the nozzle. The connecting piece (4) is provided at its nozzle-side end with a nonreturn valve which blocks a return flow from the nozzle to the connecting piece wherein, the connecting piece (4) is open at its nozzle-side end. The nonreturn valve comprise an elastic shaped part (8) with a mouth which is normally closed and can be opened by the pressure of the cleaning liquid.

Abstract: An actuator is operatively connected to a closing member via a tappet. The closing member is introduced in a valve chamber and forms, with a conically tapering valve seat as part of a servovalve, a seal resistant to high pressure. The cross section of the closing member is configured to be mushroom-shaped, a closing head being in the form of a part-sphere and having a central flattening, with the result that the tappet has an enlarged bearing surface. A stem of the closing member is surrounded by a valve spring. The closing member is preferably shaped out of a solid sphere.

Abstract: The invention relates to an endpiece for dispensing and/or measuring out liquid pharmaceutical substances, the endpiece comprising a cylindro-conical body (1) fitted with a bottom base (13) for receiving thrust and for coupling to a tank capable of being put under pressure, and an axial ejection duct (10) containing a central core (2) and communicating firstly at its top end with a spray nozzle, and secondly at its bottom end with the tank, it is characterized in that the top end of the ejection duct (10) is closed in temporary and leakproof manner by a wall (111) which is secured to the top portion (1a) of the body (1) and which extends perpendicularly to the duct, the wall being movable in reversible manner under drive from the substance, said wall being provided with a central orifice (110) capable of being closed in the closed position by a stud (20) secured to the core (2) being forced thereagainst, the periphery of the wall being attached to said body (1) via an elastically deformable link element (112)

Abstract: A nozzle for a drill bit has an adjustable orifice, allowing a single nozzle to change the pressure drop for a given flow rate. This is accomplished by the use of two plates, each having a shaped aperture therein. The degree to which the two apertures are overlapped determines the size of the orifice. The movement of the apertures, and thus the size of the orifice, can be adjusted at the drilling site.

Abstract: A spray head assembly particularly, but not exclusively, adapted for use in conjunction with a pulse-action lubrication system that dispenses measured quantities of fluid and propels the fluid through a fluid-carrying apparatus to the spray head assembly. The spray head assembly applies the fluid, e.g., lubricant or coolant, to a target object or article, in particular, a cutting tool, at the remote end of said tube, in the form of a dispersion. The spray head assembly has a plurality of outlet apertures which are disposed at predetermined locations and at predetermined angles with respect to the target object, so as to apply the fluid to multiple surfaces of the target object and thereby ensure thorough lubrication, cooling, etc. of the surfaces of the target object.

Abstract: An improved inlet control valve is provided for controlling water inflow to an irrigation sprinkler, wherein the inlet control valve exhibits improved tolerance to passage of small grit and debris. The inlet control valve includes a valve member normally engaging a valve seat to prevent water inflow to the irrigation sprinkler, and adapted for movement to a modulated open position to permit water inflow to the sprinkler at a regulated pressure. The valve member carries a flow restrictor disposed upstream from the valve seat to produce, when the valve member is in the open position, a first pressure drop which cooperates with a second pressure drop between the valve seat and valve member to regulate the water inflow pressure. The inclusion of the upstream flow restrictor and the associated first pressure drop effectively reduces the magnitude of the second pressure drop across the valve seat and thereby permits the valve member to open with an increased clearance relative to the valve seat.

Abstract: The present invention relates to a high pressure cleaning device having suds cleaning efficacy comprising a control body, containing a Venturi tube seat at the interior thereof, connected to the output of a pump, one side of the body being an inlet for the feeding of detergent and the other side being connected to a high pressurized air output pipe such that the water stream and the detergent are mixed and formed into suds flowing out from an water outlet of the body to the outside for cleaning purpose, characterized in that a bending opening is provided to the middle section of the of the body connected to the inlet and outlet water passage, and the opening edge of the bending opening, corresponding to the lateral side of the body, a pressure-adjusting device is provided and a plug shaft is inserted at the bending opening and in combination with the conic shape end of the shaft body and a press board mounted at the bottom end of the plug shaft to resist the pressure change of the pressure within the interior

Abstract: A spray nozzle fluid regulator and restrictor combination for controlling fluid supplied to a spray nozzle used in a fluid supply system includes a pressure regulator portion and a fluid restrictor portion. The pressure regulator portion controls a fluid pressure of the fluid supplied to the spray nozzle. The fluid restrictor portion controls the flow rate of the fluid supplied to the spray nozzle. The pressure regulator portion and the fluid restrictor portion are formed as a single assembly with the fluid restrictor portion being positioned substantially adjacent to the pressure regulator portion to increase the overall responsiveness of the pressure regulator portion.

Abstract: A sprinkler for watering a fixed spray pattern includes a flow conduit having a nozzle coupled thereto. A filter screen is held in place beneath the nozzle. The filter screen engages against a poppet type valve member of a flow shut off valve to space the valve member away from a valve seat to permit water flow through the flow conduit when the filter screen and nozzle are in place. If the nozzle is removed, the filter screen can move far enough upwardly, or can itself also be removed, that the valve member closes to shut off flow through the flow conduit. The flow shut off valve is located at a fixed distance from a reference point in the top of the flow conduit to permit the same sized screen to open the valve regardless of the overall length of the flow conduit. A flush cap used initially on top of the flow conduit in place of the nozzle, i.e.

Abstract: A dusting gun for removal of dirt and for cleaning purposes, where dirt, dust, oil and other loose or firmly sticking coats are removed with compressed air. The dusting gun comprises an oscillating pressure discharge valve which causes splitting up of the air flow into periodically repeated pressure discharges. The oscillating valve acts automatically under the influence of the static and dynamic pressures of the compressed air and is designed to oscillate with a frequency in the range of 2-50 Hz. The oscillating valve is connected to a nozzle by an elongated air duct.

Abstract: A shower head having a water inlet passage for providing a supply of water to the shower head and a plurality of nozzles for expelling water from the shower head. The flow of water from the water inlet passage to the nozzles is controlled by a pressure actuated toggle valve mechanism. The valve mechanism is in communication with a rotatable bottom portion of the shower head and rotates as the bottom portion of the shower head rotates. The valve mechanism can adjust the flow of water to the nozzles and shut it off altogether.

Abstract: A multifunctional air gun, designed to be operable in a sucking mode, a blowing mode or a sucking and blowing mode, is disclosed. In the air gun, a tubular body has an on/off valve unit in addition to upper and lower openings communicating with each other. A fixed spool is set within the upper opening of the tubular body and connects the air supply tube to an air jet pipe while controlling the flowing direction of compressed air. A vacuum valve unit is set within the lower opening of the tubular body and is assembled with suction and exhaust nozzles at both ends while allowing the two nozzles to communicate with each other. The vacuum valve unit vacuumizes the interior of the two nozzles due to the compressed air. A first control knob is assembled with the fixed spool to control the compressed air for the vacuum valve unit, thus controlling the suction force generated by the compressed air for the vacuum valve unit.

Abstract: A push-button applicable to the stem (3) of a pump (4) for delivering liquids or creams under pressure. The push-button includes a cylindrical cavity into which there extends a shutter (10), the free end of which lies opposite a discharge nozzle (8) formed in an elastically flexible body (7) secured to a piston (13) movable on the shutter (10) by the effect of the pressure delivered by the pump.

Abstract: A valve device, in particular a window and lens cleaning device in motor vehicles, includes a housing (1) with a duct (2) and at least one nozzle (3), and also a tubular connecting piece (4) for feeding a pressurized fluid, in particular a cleaning liquid, into the duct and to the nozzle. The connecting piece (4) is provided at its nozzle-side end with a nonreturn valve which blocks a return flow from the nozzle to the connecting piece, wherein the connecting piece (4) is open at its nozzle-side end. The nonreturn valve comprises of an elastic shaped part (8) with a mouth which is normally closed and can be opened by the pressure of the cleaning liquid.

Abstract: This invention relates to a pressure compensator (11) for use with irrigation devices (8) where the pressure compensator (11) is used to control a flow of water. The compensator (11) comprises elastomeric disc (15), a substantially concave seating surface (13) which is covered by the disc (15), the seating surface (13) having a peripheral edge (22) against which the disc (15) locates, and at least one recess portion (26) on the periphery on the seating surface (13) that results in an aperture between the disc (15) and the seating surface (13) when no force is applied to the disc (15), and which provides flow control resulting from the edge of the disc (15) flexing into the recess (26) when force is applied to the disc (15). Significantly less force is required to flex the edge of the disc (15) into the recess (26) which results in control of fluid flow at much lower pressures by comparison known fluid control devices.

Abstract: A spray paint gun air stabilizing structure comprised in sequence of a connector, a valve, a shouldered tube, a spring and a piston. Wherein, the shouldered tube is provided inside the connector to accommodate the valve. A proper gap exists between the valve and the connector. The spring slips on the hollow piston. One end of the piston and its walls form two stopper walls compromising the inner diameter of the air passage of the spray paint gun while the other end of the piston penetrates through the shouldered tube towards the valve. Whereby, the pre-pressurized air in normal status drives the valve in the connector, then is introduced into the spray paint gun via the gap provided to the inner wall of the valve. If the air is over-pressurized, back-pressure is formed in the air passage to push the piston to compress the spring, the outer end of the piston gets closer to the end surface of the valve to narrow down the gap.

Abstract: A shower head includes a housing supporting a low speed rotary valve member driven by a high speed rotary turbine to produce a variable flow rate. The turbine also produces pulsations of water streams discharged from the housing and is shifted axially to produce continuous water streams. A manually actuated control valve and passages with pressure responsive flow control washers provide for selecting different ranges of variable flow or for bypassing the variable flow.

Abstract: An apparatus (100) for selectively discharging a stream of liquid has a body (102) adapted for connection to a source of liquid under pressure, a throttle valve assembly (120) for maintaining a constant output flow throughout changes in supply pressure, a smooth bore barrel (140) for providing a deluge stream, a fog tip (160) for providing an aspirated fog spray and a shut off valve (180). The fog spray pattern is variable from a straight stream parallel to the axis of the apparatus to a wide spray at an angle to the axis of the apparatus. The deluge stream and the fog spray are selectable separately or in combination.

Abstract: Oscillating disk devices for drip irrigation systems, heap leach mining systems, industrial cleaning high pressure washer or emulsifying systems are provided. The devices include an upper body portion having an inlet defining an intake passageway and a lower body portion having a discharge outlet defining a discharge opening and passageway. A disk (or disk combined with a spring) is positioned in a chamber between the upper and lower body portions. During the oscillation cycle, the disk oscillates with great energy at a low to medium frequency. This mechanical oscillation may be used to flush out irrigation or heap leach mining drippers and lines, and to create shock waves or mechanical vibrations that can be used for industrial cleaning applications, increase efficiency of high pressure water and mix or emulsify solutions.

Abstract: A constant flowrate water saving valve comprises a main valve body having a peripheral wall formed with a conical-shaped valve seat surface, a liquid inlet opening on a side of the inner diameter r.sub.1, a vent flow opening on a side of the inner diameter r.sub.

Abstract: An anti-crossover nozzle with two principle pieces that snap together, having a forward end portion with a dispensing opening, a rear end portion which includes at least a pair of inlets. Each inlet has a center passage, therethrough and at least two valve leaflets biased by their own inherent resiliency to a normally closed position covering openings in the passages. There is at least one point of attachment formed between an interior surface of the rear end portion and the valve leaflets. The leaflets are displaced from their normally closed position by the force of incoming liquid foam components.

Abstract: A high pressure water gun for washing electrical insulators and other related articles, which gun has a barrel, a water inlet, a water outlet (nozzle), a pistol grip and a main body portion, which portion communicates with both the inlet and with a lower valve chamber separated from an upper piston chamber. A piston is vertically slidably mounted in the upper chamber. A check valve is slidably mounted horizontally in the lower chamber and is spring biased, when the gun is in the inoperative position. A port extends between the lower chamber and communicates with the upper chamber. Another port in the lower chamber communicates with the barrel. Water introduced into the inlet follows a dual path and ejects out of the nozzle with relatively little pull required on the trigger.

Abstract: A pop-up sprinkler head is provided with a mechanism that shuts off the water when the nozzle portion of the riser is removed for maintenance. A stopper element reciprocally mounted in the riser moves to a shut off position when the nozzle is removed. A valve seat member and a stopper element may be provided to retrofit the riser of an existing sprinkler head.

Abstract: An irrigation sprinkler having a tubular housing having an inlet and adapted to be coupled to a water supply source and an outlet and in which is located an outlet nozzle including a sprinkler outlet. The housing accommodates flow control means coupled at one end to said inlet end and having an outlet which communicates with and is spaced from the sprinkler outlet by a region defined within the housing and constituting an hydraulic quiet zone for ensuring that water flow arrives at the spray outlet with substantially symmetrical distribution and with minimal turbulence.

Abstract: A nozzle for dispensing a liquid or semi-liquid substance (P) and designed to be mounted on a tank (R) suitable for being put under pressure. The nozzle is of the type comprising a thimble (1) and moving shutter (2) housed inside the thimble. The thimble (1) is provided with a coupling end (11) for coupling to the tank (R) and an ejection orifice (10). The shutter (21) is constituted by a rod (21) carrying a plug (20) at an outer end thereof. The plug (20) cooperates with the ejection orifice (10) to form a delivery valve. The rod (21) also carries a transverse wall (22) at an inner end thereof. The wall (22) leaves a passage for the substance (P) and cooperates with a resilient return means (3) for returning the moving shutter (2) towards a closed position in which the plug (20) is engaged in sealed manner in the ejection orifice (10).

Abstract: A shower apparatus reduces the effects of water hammer within a portion of a flow route connecting a shower head to a supply, when a flow adjusting mechanism proximal the shower head is operated. The shower apparatus adjusts pressure of a supply fluid dependant upon the degree of throttling of the flow route and the flow adjusting mechanism controls the amount of flow of the supply fluid dependant upon a degree of opening thereof to the discharge end of a shower head. The structure providing the pressure adjustment and the flow adjusting mechanism are each disposed successively from upstream of the flow route, between a shower side flow route provided in a water plug and the shower head or a discharge end of the shower head.

Abstract: An apparatus for cleaning a coating gun nozzle used in spraying the inner surface of cans with a coating material comprises a cleaning solution spray nozzle having a cleaning spray extension and a cleaning spray nozzle for spraying a cleaning solution onto the coating gun nozzle to remove oversprayed coating material collecting thereon. The coating gun nozzle is disposed at an end of a coating gun nozzle extension. A single spray shield is disposed over the end of the coating gun nozzle extension, and has a flange portion which extends at least to an external surface of the cleaning nozzle extension to shield the components of the apparatus from oversprayed coating material. A check valve mechanism disposed within the cleaning spray extension prevents cleaning solution from dribbling or drooling from the cleaning spray nozzle. A control system controls the operation of the apparatus.

Abstract: An apparatus and method for generating a high-speed pulsed fluid jet wherein the apparatus has a valve cylinder that forms a valve cavity. A piston is slidably mounted within the valve cavity. A plunger with an internal chamber is fixed with respect to the piston. The internal chamber communicates with the valve cavity. An end plug is sealably mounted with respect the plunger. The end plug has a bore through which a valve stem is sealably and slidably mounted. The valve stem is mounted to slide within the internal chamber, the bore of the end plug and a valve chamber of a cylinder. The valve chamber communicates with a pressurized fluid source. A valve poppet is attached to the valve stem. A spring or compressed gas is used to exert a bias force which normally urges the valve poppet into a releasable seated position within a valve port of an end plug which is sealably mounted with respect to a fluid cylinder that forms the valve chamber.

Abstract: A pop up sprinkler unit includes a housing having an inlet including a passage for connecting to a source of fluid such as water or air, a pressure responsive inlet valve assembly including a valve seat surrounding the inlet, a valve member having annular sealing normally biased into engagement with the seat, and a velocity control disc mounted on the valve member and extending into the passage at the inlet, the velocity control disc metering initial inlet fluid for controlling the rate of opening of the valve for controlling flow of fluid through the valve to a nozzle and extension of a riser to an extended position.

Abstract: A valve is formed by an intersection of an open ended water supply pipe and a sprinkler outlet pipe. The outlet pipe has a closed end and an outlet end that is adapted for connection to a sprinkler. A cylindrical guide post connected to the closed end extends through the intersection to a proximal portion of the outlet end. A guide assembly is slidably disposed over the guide post. In response to an excessive flow of water through the outlet end, the guide assembly is drawn through the intersection to occlude the outlet end.

Abstract: An atomized liquid dispenser applicable to the stem of manually operated pumps for dispensing a liquid enclosed in a container, the dispenser having an elongate chamber housing a movable piston from which there projects an appendix urged by a spring towards a discharge or dispensing nozzle, a portion of the appendix being insertable into and sealedly movable within a cylindrical seat in an insert in which there is provided the nozzle opening into the seat, a stop element being provided for retaining the piston, when in its rest position, with the free end of the appendix spaced from the end of the seat in the insert.

Abstract: This invention relates to pulsating rotating sprinklers which can be used for irrigation and for other applications. Such sprinklers are especially useful when their inlet is connected to an outlet from a pulsating device, which intermittently ejects pulsating fluid jets into the inlet of the sprinklers. A typical such sprinkler consists of a floating cylinder enclosed in a casing. The cylinder, which has a fluid inlet and a fluid outlet, is floating, rotating, and intermittently ejecting pulsating jets of fluid. The combination of such a floating sprinkler and the unique properties of a pulsating device can be also used for operating innovative pulsating pop-up sprinklers.

Abstract: The present invention provides an irrigation control valve for converting water supplied to the irrigation control valve at a constant, low-volume flow rate into a pulsed, high-volume flow rate discharge. The irrigation control valve includes a control valve body having an inlet coupled to the water supply tube, an accumulation chamber, a mist port and a mist valve assembly for intermittently discharging the water from the accumulation chamber out of the mist port. The irrigation control valve further includes a pressure relief valve assembly operably coupled to the water supply tube for relieving the pressure within the accumulation chamber when the irrigation control valve is not in use.

Abstract: An atomized liquid dispenser, comprising a pump and a dispensing head mounted on the stem of the pump, the head defining a chamber communicating with the stem and housing a movable piston urged by a spring to close a discharge nozzle provided at one end of the chamber. From the head there extends a skirt in which cuts are provided which define a flexible tang engaging one end of said piston projecting from said chamber. From the inner surface of the tang there projects a cam which, when the pump is operated, interferes with the pump or with an element rigid with it, to cause the tang to flex outwards and axially entrain the piston, so withdrawing it from the discharge nozzle.

Abstract: A windshield washing system for a motor vehicle which moves a jet nozzle (1) from an inward rest position to an outward working position by pressure applied to a cleaning liquid. A valve cover (4) of a valve is moved, together with a nozzle support (2) by the pressure of the cleaning liquid and holds a passageway of the nozzle support closed until the valve cover engages a fixed stop (5) and the valve cover of the valve then opens. The stop is on a fixed shaft-shaped holding element (7) which, in the rest position of the jet nozzle, extends into a receiving element (9). The receiving element is inserted into a passageway of the nozzle support and is sealed, by an inner side of the valve cover. When the jet nozzle is in its working position, cleaning liquid flows through a passage space between the receiving element and the nozzle support to the jet nozzle.

Abstract: A carbonated shower apparatus for home use can selectively supply carbonated water in a simple manner and at low cost for bathing, hair washing, pet washing and other purposes. It comprises a mixing water tap unit (1), a carbon dioxide gas supply unit (2), a hose (3), a control valve (4) and a shower head (5).

Abstract: A nozzle closing valve, particularly for a pressure atomizer nozzle of an oil burner, comprises an inlet side with an inlet port and a valve seat located at the end of the inlet port, as well as a closing member, which is sealing pressed onto the valve seat by a first spring located behind the closing member and is raised from the valve seat counter to the tension of the first spring when a predetermined pressure is reached in the inlet port. A maximum sealing action is achieved in the case of easy manufacture and compact construction in that the closing member is constructed as a diaphragm, the first spring has a substantially linear spring characteristic and the first spring is housed in a spring chamber constructed as a space open on one side and whose only opening is sealingly closed by the diaphragm.

Abstract: In a working nozzle for a gel coating apparatus, a nozzle plunger (15) has, in addition to a valve portion (15b), located at its lower end, for opening or shutting the small-diameter portion of a plunger insertion hole (4), a flange (16) which is located above the valve portion and can be brought into contact with or separated from an edge of the small-diameter hole portion (5). This prevents leakage of gel during shutting of the small diameter. The nozzle plunger has also a gel accommodating groove (17) provided on the outer periphery of said valve portion and adjoining to a lower surface of the flange, thereby permitting the sharp cutting of the gel when the valve shuts. The nozzle plunger has a step (25) provided at the lower end of its inner periphery and having a larger diameter than larger than the inner diameter of the valve portion, thus preventing stagnancy of seeds within the nozzle plunger.

Abstract: A pressurized water toy providing a pressure actuated pulsator for shooting water in consecutive pulses. The pressure actuated pulsator includes expansible inlet and outlet tubing, a reservoir for the temporary retention of water, and a sphere-shaped obturator for temporarily blocking the flow of water through the outlet tubing. Flow of pressurized water into the expansible tubing expands and elongates the tubing and forces a seal to be formed by biasing the sphere-shaped obturator against a first end of the outlet tubing compressing a spring. A buildup of pressure behind the obturator causes the expansible tubing to expand and permit passage of the pressurized water around the obturator and into and through the nozzle. When the pressure behind the obturator drops below a certain level, the obturator again blocks the orifice into the outlet tubing causing a buildup of pressure there behind and the cycling of pulse of water flow continues.

Abstract: An atomizer device for liquids pressurized by a manually operated pump, without pressurizers, comprises a nozzle with an obturator to which a plunger member is connected, The liquid pressurized by the pump acts on this plunger and moves the obturator against a spring, opening the nozzle. Interceptors, which allow the liquid to pass and consequently to be sprayed outwards only when the obturator has moved by a given amount, moving away from the nozzle and forming a predetermined chamber about the nozzle, are provided in the passage for the liquid to the nozzle. The uniformity of the fan of the jet of liquid within the course of each operating cycle of the pump and its constancy in the different cycles is thus ensured.