Abstract: The invention relates to a self-compensating drip irrigation emitter. A plurality of novel embodiments are provided, wherein the emitter of the invention is capable of always supplying a substantially constant flow within a range of pressures of a fluid flowing in a pipe (3), from very low to very high pressures. Furthermore, the emitter of the invention has such characteristics as to prevent any accidental and undesired clogging thereof by sediments or debris.

Abstract: A fuel injector having a piezoelectric actuator, which activates a shutter to move the shutter in a work direction between a closed position and an open position; the piezoelectric actuator is housed inside a casing having an inner chamber insulated from the fuel, and an outer surface wet by the fuel.

Abstract: A liquid injection apparatus 10 comprises an injection device 15, and an electro-magnetic injection valve 14 for ejecting pressurized fuel into the injection device. An ejection hole in the electro-magnetic injection valve is connected to a hollow cylindrical hermetically sealed space, which in turn is connected to a liquid ejection nozzle, through a liquid filling port, a liquid supply passage, and a chamber which are included in the injection device. By means of allowing the electro-magnetic injection valve to eject the pressurized fuel at an angle of inclination relative to the center axis of the hollow cylindrical hermetically sealed space, flows of fuel are produced across a wide area in the hermetically sealed space so that large-sized air bubbles are prevented from being formed in the hermetically sealed space.

Abstract: A pressure compensated drip irrigation hose (20) includes a hose having a wall (21) with an inner surface (21a). A continuous elastomeric strip member (30) is connected to the inner surface (21a). The continuous elastomeric strip member (30) and inner surface (21a) form a plurality of emitters. The emitters have an inlet section (40), a pressure reducing section (60) which is downstream from the inlet section (40). A pressure responsive section (70) is downstream from the pressure reducing section (60) and the outlet section (80) is downstream from the pressure responsive section (70). The continuous elastomeric strip member (30) is constructed from a material softer than the wall (21).

Abstract: A fuel feed apparatus includes a grounded conductive resinous sub tank, a conductive fuel inlet pipe integrally formed with a bottom section of the sub tank and a conductive resinous jet nozzle included in a jet pump. The jet nozzle is welded on the bottom section of the sub tank, and has a nozzle port for jetting fuel. Here, the jet nozzle, the jet pump and the fuel inlet pipe are grounded via the sub tank without individual wiring member. Even if static electricity is generated due to friction between the jet nozzle and fuel jetted from the nozzle port, electrical charging can be prohibited. Thus, dielectric breakdown due to the electrically charging and cracking resulting from the dielectric breakdown can be also prohibited.

Abstract: A dispensing module having a dispenser body having a liquid passageway, a valve element movably mounted within the liquid passageway, and a nozzle removably coupled with the dispenser body. The nozzle has a valve seat contacted by a tip of the valve element for modulating liquid flow through the liquid passageway. The tip may be made of a harder material than the valve seat and may have a surface finish characterized by an Ra less than or equal to about 32 microinches. The tip may have a compound angle provided by contiguous frustoconical surfaces of differing included angles in which one frustoconical surface contacts the valve seat. The nozzle is configured to be attached to the dispenser body so that the valve seat and a sealing surface of the valve element tip form a circular line of contact when among multiple different nozzles and dispenser bodies.

Abstract: A spreading head, particularly for spreading thermoplastic material on an intermediate component, which comprises a first duct for feeding the adhesive to a valve provided with a needle that interferes with a cup connected to a second duct for spreading an adhesive. The valve comprises means suitable to actuate and/or visualize the selective positioning of the needle, preferably in the open condition.

Abstract: A constant flow apparatus for adapting a fluid flow passing through a pipe at constant value comprises a tubular body to be mounted inside the pipe, an orifice disposed at the output end side of the tubular body, a movable needle with a flat tip portion positioned opposite the orifice, a spring supporting the needle with appropriate elastic force, and an elastic tubular sealing member having a circumferential bulging portion provided on the outside of the tubular body to cover the tubular body. The constant flow apparatus can be fixedly mounted in the pipe irrespective of the diameter of the pipe, and adapt the fluid flow passing through the pipe, preventing the needle from vibration.

Abstract: A closed circuit fuel nozzle for engaging an adapter on a fuel tank. The nozzle may include a body having an inlet aperture, a tubular assembly, an outlet aperture, and walls forming a closed flow path from the inlet aperture to a tubular assembly. The distal end of the tubular assembly may form the outlet for the nozzle. The tubular assembly may comprise a tube extending in the longitudinal direction and a sealing collar secured proximate the distal end to form the outlet. An articulator may provide resilient articulation of the sealing collar with respect to the tube about lateral and transverse axes. A biasing member may urge the tubular assembly distally in the longitudinal direction. A poppet valve may be selectively translatable in the longitudinal direction and shaped to stop flow through the body when seated against the sealing collar.

Abstract: An aerosol tip mechanism for an aerosol-type dispenser for dispensing liquid content has a flexible outer shell, a rigid cap portion composed of lower and upper portions, and a rigid nozzle portion having a rigid shaft received within the outlet portion of the flexible outer shell. The rigid shaft interfaces the outlet portion of the outer shell, forming a first normally-closed one-way valve. The lower and upper portions of the rigid cap portion form boots adapted to receive an outlet portion of the flexible outer shell, the boots thereby constraining a lateral motion of the outlet portion of the outer shell, and symmetrically centering the outlet portion around the rigid shaft of the nozzle. The rigid nozzle portion includes a plurality of liquid channels for delivering liquid from a reservoir to a swirling chamber defined within the rigid cap portion, which liquid channels are configured to minimize energy losses of the liquid and promote a more homogeneous fluid particle size in the dispensed aerosol.

Abstract: An injection nozzle for use in delivering fuel to a combustion space comprises a nozzle body provided with a blind bore within which a valve member is slidable. The valve member comprises a first region of substantially frusto-conical form defining a seating surface which is engageable with a valve seating surface, defined by the blind bore, to control fuel delivery from the injection nozzle, and a second region arranged such that, when the valve member is seated against the valve seating surface, in use, the second region is located downstream of the valve seating surface. The first region subtends a first cone angle which is greater than a second cone angle subtended by the second region.

Abstract: A liquid injection apparatus includes an injection unit attached to a liquid injection space which is formed by, for example, an intake pipe of an internal combustion engine, and a pressure pump for pressurizing liquid fed from a liquid storage tank to a pressure enabling injection, and for feeding the liquid to the injection unit. In order to atomize the liquid fed from the pressure pump, the injection unit includes a plurality of chambers, each of which has a piezoelectric/electrostrictive element fixed to its wall surface, and a plurality of liquid discharge nozzles. A force which is induced by liquid pressure in the chambers and imposed on the piezoelectric/electrostrictive elements via the walls of the chambers is almost completely canceled by a counterforce induced by liquid pressure in counterforce source chambers. The liquid pressure in the counterforce source chambers is substantially equal to that in the chambers.

Abstract: A piezoelectric device which is applicable, for example, as a drive source for a fuel injector comprises a plurality of piezoelectric layers and a plurality of inner electrode layers stacked alternately with each other. The outer peripheral side surfaces are formed with a pair of outer electrode layers electrically turned on alternately in such a manner that the inner electrode layers located adjacently to each other through the piezoelectric layers have different polarities. Second outer electrode layers configured of a conductive material having a larger breaking elongation than the first outer electrode layers, respectively, are formed on a pair of the first outer electrode layers.

Abstract: With a device for applying a coating agent onto a cyclically moved substrate, a uniform coating thickness may be achieved, although the rate of advance is not constant. At least one spray valve is provided which is permanently supplied with coating agent and the nozzle opening of which being adjustable with regard to the size of its effective discharge area in case of change of the rate of advance of the substrate according to the dependency, for a constant layer thickness of the coating agent, on the discharge rate of the coating agent out of the spray valve on the rate of advance of the substrate.

Abstract: A nozzle for transferring a flow of liquid metal between metallurgical vessels or molds comprising an entry portion for receiving the liquid metal. A flow regulator, such as a stopper rod, is movable from an open position to a closed position with respect to the entry portion for respectively permitting and prohibiting flow through the nozzle. The entry portion and the flow regulator define a control zone therebetween. A pressure modulator, downstream of the control zone, is adapted to minimize a pressure differential across the control zone. The pressure modulator constricts flow downstream of the control zone.

Abstract: A device for supplying preferably liquid or gaseous fuels to a combustion chamber is provided. The device includes a nozzle body which contains a hollow chamber and can be connected to a fuel supply line. The outlet of the nozzle body can be closed using a sealing element which has at least one flow channel, preferably a sealing cone. An actuating element (22) is located in the hollow chamber (2) of the nozzle body (1). The actuating element (22) controls the sealing element (11) and can be displaced in a first direction by the fuel which is to be supplied, against the force of a counter-bearing (23) located in the hollow chamber (2). This results in the exposure of the outlet (18) of the nozzle body (1). The sealing element (11) can be displaced in a second direction opposed to the first direction by the counter-bearing (23), in order to close the outlet (18).

Abstract: An engine fuel injector includes an internal fuel passage in which pressure waves can develop upon opening and closing of an injection valve. A fuel pressure damper is associated with the fuel passage and operates to vary the internal volume of the fuel passage in a manner to reduce the amplitude of pressure variations and pressure waves in the fuel passage. A variety of fuel pressure damper embodiments are disclosed.

Abstract: A displaceable nozzle (8) of an injection steam generator for small appliances, particularly irons or ironing stations, comprising a steam chamber (3) inside a steam generator housing (1) provided with an injection opening (5), is positioned telescopically on a fixed member to define a nozzle chamber (10). This nozzle (8) can be displaced by an inside pressure in the nozzle chamber in a first pressure range in the direction of the injection opening (5) and can be moved back from the injection opening (5) by a restoring force e.g., a restoring spring (12), wherein the inside pressure in the nozzle chamber (10) is lower in second pressure range than in the first pressure range. A drain passage (18) for the nozzle chamber 10 is connected via a valve arrangement (19, 21) to the fixed member (11), so that excess residual water, which exits when the nozzle (18) is moved back from the nozzle chamber (10), does not cause calcification of the nozzle opening (9) and the injection opening (5).

Abstract: A quantitative discharge apparatus for powder material, comprising: a tubular body for storing powder material; and an elastic membrane having plural penetrating apertures, the membrane constituting a bottom of the tubular body. The elastic membrane is vibrated by applying a positive pulsating vibration air, and thereby discharging powder material stored in the tubular body from the penetrating apertures of the elastic membrane. The plural penetrating apertures of the elastic membrane are formed on the circumference of a circle, of which center is a specific point of the elastic membrane.

Abstract: The present invention relates to a fire hose lance comprising a body (1) including a pressure control device comprising a valve (44) partly closing up an axial drill hole (320) of a piston (32) mounted in the body (1) of the lance, characterized in that valve (44) is fixedly mounted on the body (1), piston (32) is slidably mounted in the body (1), wherein movement of the piston (32) is caused, on the one hand, by the force resulting from the fluid's total pressure exerted on the surface (D1) of the piston located opposite valve (44) and on the other hand, by the force exerted by restoring means (31) tending to neutralize the resulting force from the fluid pressure.

Abstract: An irrigation apparatus comprises an in-line dripper insert having a support for attaching a micro tube to the dripper outlet. A fluid conduit in which the insert is placed has an aperture in line with the support. The support preferably comprises a projection for securing a micro tube thereto, a sleeve for securing a micro tube or a connector thereto, or a shoulder for supporting the attachment of a connector to the fluid conduit at the aperture. The dripper insert is secured to the inner surface of the fluid conduit and is contained entirely therein. After detachment of the micro tubes, the main fluid line may be easily reeled or otherwise handled. The internal dripper provides structural internal support to the main fluid conduit when external pressure is applied to the line, such as when a micro tube or a connector is forced against the fluid line to be connected thereto.

Abstract: A system that controls nitrogen pressure in the ullage of a power transformer that has its windings submerged in oil. The pressure is controlled in a narrow range of approximately 0.5 psi to approximately 2.0 psi. A nitrogen generator supplies the nitrogen to a reservoir from which it is distributed to the ullage as well as to accessories such as a load tap changer or a control box. A temperature regulator is provided for substation installations that are located in climates with wide ambient temperature variations to control the pressure of the generated nitrogen in an acceptable range.

Abstract: A spray device including a barrel having a bypass and at least two spaced stoppers defining a first and second chambers and a spray nozzle. Movement of the first stopper drives the second stopper to the bypass and the fluid in the first chamber into the second chamber, mixing the fluid and substance. Continued movement of the first and second stoppers drives the mixture through the spray nozzle. The spray device may include a third stopper having a body in the tubular barrel which is moved toward the spray nozzle. The movement of the third stopper provides space for the mixture and prevents unpressurized fluid from flowing through the spray nozzle. The third stopper includes an axial stalk. The stalk may be deformable or the stalk may be separate from the body and the spray nozzle includes a longitudinal internal passage which provides communication with the spray port.

Abstract: There is provided a combustor comprising a fuel nozzle which is comprised of a rodlike body which has a fuel passage and which is located in an air passage; a plurality of hollow members which are connected to the fuel passage and which extend in radial directions from the rodlike body into the air passage; at least one injection port formed in each hollow member to inject a fuel from the fuel passage into the air passage; and a projection which extends from a farmost inner wall of each hollow member that is most distant from an axis of the rodlike body to the injection port that is most distant from the axis. A hole for leaking fuel that is connected to an air passage may be formed in a farmost inner wall of the hollow member that is more distant from an axis of a rodlike body than the injection port that is most distant from the axis, or may be formed to be adjacent to all the injection ports on an upstream or downstream side in the direction of the airflow.

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: A shower handset having teats formed in an elastomeric plate wherein positioning of the elastomeric plate behind the spray plate causes the teats to deflect outwardly, the cross-sectional areas of outlet orifices increasing in response to increasing flow rate.

Abstract: A fuel injection device having a fuel pump for each cylinder of an internal combustion engine, which fuel pump has a pump piston that is driven into a stroke motion by the engine and delimits a pump working chamber, which is supplied with fuel from a fuel tank and is connected to a fuel injection valve, which has an injection valve member that controls at least one injection opening and can be moved by the pressure generated in the pump working chamber in an opening direction counter to a closing force. A first electrically controlled control valve controls a connection of the pump working chamber to a discharge chamber, and a second electrically controlled control valve controls the pressure prevailing in a control pressure chamber of the fuel injection valve, which pressure acts on the injection valve member in the closing direction.

Abstract: A device for discharging raw material-fuel includes a pressurizing means for discharging a liquid, a pressure application room (1) in fluid communication with a discharge nozzle, and a liquid discharge nozzle (2) positioned under the pressure application room to discharge the liquid. The nozzle portion has an aspect ratio (L/d) of 5 or more, with L being the length of the nozzle in the thickness direction of the nozzle portion and d being the diameter of the nozzle portion.

Abstract: A control system for digitally monitoring and/or controlling pressure to a pneumatic load such as a stop/suckback valve. Pressure is sensed in the pneumatic fluid input lines to the pneumatic load, and a closed loop control is used to maintain the pressure at a predetermined level. In an alternative embodiment, the control system is used to ensure equal dispensing in multi-point dispense apparatus. Thus, pressure is sensed downstream of each valve in fluid communication with a respective nozzle. Any pressure differential detected is corrected by appropriate valve adjustment.

Abstract: A fuel injector comprising a nozzle body having a first bore defining first and second seatings and an outer valve member slidable within the first bore and engageable with the first seating to control fuel flow from a first outlet opening located downstream of the first seating. The outer valve member is provided with a through bore and an inner valve member is slidable within the through bore and is engageable with a second seating to control fuel flow from a second outlet opening. The through bore defines a step which is engageable with an enlarged region of the inner valve member, the through bore permitting, during fuel injector assembly, insertion of the inner valve member into the through bore through an end of the through bore remote from the first and second outlet openings. The invention also relates to a method of assembling such a fuel injector.

Abstract: A constant flow apparatus mounted in the flow route of a fluid to maintain the passing flow at a constant value is equipped with a tubular body which is fitted and mounted inside a pipeline forming the flow route, an orifice provided at the output end side of the tubular body, a movable needle arranged to face the orifice, and a spring which supports the needle positioned to face the orifice by an appropriate elastic force, wherein the tip portion of the needle is formed to have a flat surface. Further, an axial rod is provided at the input end side of the tubular body, and a cylinder hole is provided in the needle to receive the axial rod, wherein the fitting of the axial rod into the cylinder hole carries out a dampening operation which serves as a dampening means for dampening changing movement of the needle.

Abstract: An injector is disclosed, in which the change in the internal pressure of each chamber is relaxed when a pressure application mechanism is reciprocating thereby to lengthen the service life of the component parts including a diaphragm portion.

Abstract: A liquid ejection device comprising: a nozzle chamber having a first aperture in one wall thereof for the ejection of the liquid and a second aperture in a wall thereof through which an actuator arm extends, the actuator arm being attached to a substrate located outside the nozzle chamber and being connected to a paddle inside the nozzle chamber, the paddle being operable by way of the actuator arm to eject the liquid through the first aperture; the system further comprising a first raised rim formed around the second aperture, the first raised rim being arranged in a manner such that, during operation of the actuator arm, a liquid meniscus is being formed along an outer surface of the liquid between the first raised rim and the actuator arm.

Abstract: An atomizing nozzle for use with a rewet shower or a steam box. The nozzle has first and second orifices and a pressure port which allows the pressure between the orifices to be measured. The nozzle also has a pressure port upstream of the two orifices that allows for the measuring of the regulated water pressure from an actuator attached to the atomizing unit. The measured pressures can be used to determine if either orifice is completely blocked or if one orifice is partially blocked or the other orifice is worn.

Abstract: The invention relates to a spray head (100) for a fluid dispenser for dispensing a fluid, the spray head being provided with an expulsion channel (1) opening out in a spray orifice (9), and with a moving closure member (10) mounted to move between a closed position, in which it closes said orifice (9), and a spray position, said closure member (10) being urged resiliently towards its closed position, and being displaced towards its spray position by the pressure of the fluid, the spray head being provided with a swirl chamber (20) of variable volume, the volume of said swirl chamber (20) being at its maximum when the closure member (10) is in the spray position, and being substantially zero when said closure member is in the closed position, said spray head being characterized in that said closure member (10) is provided with the spray orifice (9) and with swirl channels (30) which, when the closure member is in the spray position, connect said expulsion channel (1) to said swirl chamber (20), the volume and

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: A shower head generally comprising a backing plate, a diaphragm and a cover plate. The rear surface of the backing plate includes a receptacle for receiving a conduit through which pressurized water may be directed to an aperture extending through the backing plate. The front surface of the diaphragm has a plurality of nipples extending outwardly therefrom with each nipple having longitudinal bore extending therethrough. The cover plate has a plurality of holes extending therethrough for receiving the nipples on the diaphragm such that the cover holds the diaphragm against the front surface of the backing plate. Pressurized water delivered through the aperture causes an outward deflection of the diaphragm away from the backing plate allowing water to be expelled through the bores in the nipples.

Abstract: An irrigation drip tape includes a flexible tube having an interior surface defining a primary flow path. A plurality of secondary flow paths are provided on the interior surface of the tube, the secondary flow paths in substantially axially aligned relationship along a length dimension of the tube. Each of the secondary flow paths are provided with an inlet region, a turbulence-inducing region, a pressure compensation region, and an outlet region having one or more outlets. The outlet region includes a chamber having side walls and upper and lower surfaces with one or more raised surfaces between the upper and lower surfaces to prevent the upper and lower surfaces from engaging and shutting off flow to the one or more outlets as a result of pressure in the primary flow path. The outlet region also includes at least one outlet slit in the tube in communication with the outlet chamber.

Abstract: A fuel injector seat for a fuel injector assembly, and more particularly for a high-pressure fuel injector assembly, having a number of features for minimizing the formation of combustion chamber deposits on the seat, providing a selected finish on a needle-sealing portion, and reducing sac volume. These features include positioning a transition portion between the needle-sealing portion and an orifice portion, positioning a sharp edge at the outlet of the orifice portion, and applying a coating to certain surfaces of the seat. This invention also relates to a fuel injector seat and method of manufacturing the fuel injector seat, and a method of evaluating when the transition portion is required between the orifice and needle-sealing portions for a particular seat arrangement.

Abstract: The invention provides a pressure regulator, including a housing having a bottom and provided with an inlet tube having a control rim and connectable to a pipeline under mains pressure, and at least one outlet tube connectable to a consumer; a diaphragm made of an elastomer, located within the housing and retained therein by retaining means; a control rod effectively coupled to the diaphragm and passing through the inlet tube, the rod having a control head at its free end, which head, in the assembled state of the regulator, is located in proximity to, but beyond, the control rim; wherein the bottom of the housing and the bottom-facing surface of the diaphragm define a single chamber serving both as inlet and outlet chamber, and wherein increased pressure in the single chamber causes the diaphragm to bulge away from the bottom, causing the control head to approach the control rim of the inlet tube and increasing the pressure drop in the single chamber, and wherein reduced pressure in the chamber enables the e

Abstract: A drip irrigation hose formed with a plurality of outlets for discharging the water at longitudinally-spaced locations along the length of the hose includes a plurality of emitter elements secured to the hose at longitudinally-spaced locations along its length to define a plurality of turbulent flow passageways each in communication with the interior of the hose for discharging water from a hose outlet at a slow rate. Each of the turbulent flow passageways is defined by a relatively elastic first material coextruded with a relatively stiff second material different from the first material, such that the relatively elastic material is pressure-deformable as compared to the relatively stiff material to change the turbulent flow of each emitter element in response to the pressure of the water in the hose at the respective emitter element.

Abstract: A fuel injection valve for internal combustion engines with a valve member that can move axially in a bore of a valve body and has a pressure shoulder on its shaft which acts in the opening direction of the valve member and protrudes into a pressure chamber that can be filled with high fuel pressure by way of a pressure conduit. This pressure conduit is pivoted eccentrically in such a way that the fuel jet emerging from the valve member enters into the pressure chamber off-center to the valve member.

Abstract: A coinjection nozzle communicating with a mold cavity to form a multilayered article and an injection molding method are provided. The nozzle includes at least two flow channels communicating with an outlet, with each flow channel including at least one spiral groove that decreases in depth towards the outlet area to eliminate weld lines and dips in the resultant article.

Abstract: A control system for digitally monitoring and/or controlling pressure to a pneumatic load such as a stop/suckback valve. Pressure is sensed in the pneumatic fluid input lines to the pneumatic load, and a closed loop control is used to maintain the pressure at a predetermined level. In an alternative embodiment, the control system is used to ensure equal dispensing in multi-point dispense apparatus. Thus, pressure is sensed downstream of each valve in fluid communication with a respective nozzle. Any pressure differential detected is corrected by appropriate valve adjustment.

Abstract: A water outlet (10) for an ablutionary device has a member which is moved to open and close a vent into the body of the outlet (10). In one embodiment, the outlet (10) is a shower head (10A) having a discharge opening (26) which serves as the vent. A perforate shower plate (12A) located in the opening closes the vent while the shower (10A) is in operation so that water issues from the opening (past the plate (12A)) as a spray. When the water supply is turned off the shower plate (12A) is moved out of the opening (26) to open an annular vent (14A) into the interior of the body of the shower head (10A) to aid drying of the interior. When the water supply is turned on the plate (12A) is moved back into the opening (26) to close the vent (14A).

Abstract: An injection nozzle for use in delivering fuel to a combustion space comprises a nozzle body provided with a blind bore within which a valve member is slidable. The valve member comprises a first region of substantially frusto-conical form defining a seating surface which is engageable with a valve seating surface, defined by the blind bore, to control fuel delivery from the injection nozzle, and a second region arranged such that, when the valve member is seated against the valve seating surface, in use, the second region is located downstream of the valve seating surface. The first region subtends a first cone angle which is greater than a second cone angle subtended by the second region.

Abstract: The present invention relates to a fire hose lance comprising a body (1) including a pressure control device comprising a valve (44) partly closing up an axial drill hole (320) of a piston (32) mounted in the body (1) of the lance, characterized in that valve (44) is fixedly mounted on the body (1), piston (32) is slidably mounted in the body (1), wherein movement of the piston (32) is caused, on the one hand, by the force resulting from the fluid's total pressure exerted on the surface (D1) of the piston located opposite valve (44) and on the other hand, by the force exerted by restoring means (31) tending to neutralize the resulting force from the fluid pressure.

Abstract: A drip irrigation emitter includes a body member having an inlet for receiving pressurized water, an outlet, and a connecting passageway having a plurality of baffles spaced from each other in the direction of the water flow from the inlet to the outlet to define a labyrinth flow path cooperable with a deformable membrane which regulates the flow through the labyrinth flow path in response to the inlet pressure. The baffles are formed with notches in the sides thereof facing the membrane such that the membrane is deformed by an increase in the inlet pressure first into engagement with the sides of the baffles facing the membrane, and then into the notches, to regulate the flow to the outlet.

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: A flow regulator for regulating flow of a fluid includes a flow-attenuating labyrinth formed at least in part by a plurality of baffles. At least some of the baffles are implemented as leaf-spring portions, preferably made from metallic material, which are deployed so as to be free to flex in response to variations in a pressure exerted on the leaf-spring portion by the fluid. The leaf-spring portions are configured to cooperate with an adjacent surface to provide multiple-stage pressure-responsive flow regulation.