Abstract: The present invention provides a centering cone for fixing a container, in particular a container standing on a centering plate, and for supplying clean air into the container through an air outlet of the centering cone so as to increase the internal pressure of the container. The air outlet is defined by a passage opening with a screen or by at least two individual passage openings.

Abstract: A performance room includes: a luminous device for stimulating dinoflagellates and generating a luminous effect; an audio equipment for providing a piece of music, wherein the music is integrated with the luminous effect of the dinoflagellates, and the sequential tonalities and rhythms of the music are related to the switching of switching elements of the luminous device; and a field which can define a performance space, wherein the luminous effect of the dinoflagellates and the music are located in the field of the performance space. In particularly, the luminous effect is exhibited by integrating the musical melody with the dinoflagellates itself acted as a performer.

Abstract: The present invention is directed to an apparatus for producing a water maze from walls of falling water that can be reconfigured to change the maze. In one embodiment, the apparatus is comprised of a plurality of spray bars that are each capable of producing a separate wall of falling water droplets and a plurality of water valves that are each associated with only one spray bar. The water valves can be used to define at least two different paths between the entrance and exit of the maze. The apparatus is also capable of being used to create interesting visual effects by projecting light/images on to multiple screens created by walls of falling water droplets.

Abstract: In a device for producing quantitative-diameter spray droplets of pesticide, a driving motor is controlled by a control center, the driving motor drives a lead screw, the lead screw drives a sliding device to achieve a designated accurate position on a guide track, and a piston moves slowly along with the sliding device to extrude chemicals in a droplet generator quantitatively, the chemicals extruded by the piston through the motion in a droplet cavity forms small single droplets through a guide pipe, the droplets with specific particle size are further generated by precisely controlling the extrusion amount of the chemicals, so that the device can be widely used for studies about diffusion of the droplets evaporation property of the single droplets and the like tested by water-sensitive paper, as well as tests of the properties of the pesticide, and further has broad application prospects.

Abstract: A device and a method for dosing an uptake or a release of a liquid. The device comprises a pump pumping a fluid, a pump drive driving the pump, and a fluid channel connected to the pump. A tip is connected to the fluid channel comprising an opening for the uptake or the release of the liquid. At least one flow sensor measures a flow rate of the fluid in the fluid channel. A controller monitors and adjusts the flow rate and/or pressure in the fluid channel.

Abstract: The present invention is directed to an apparatus for producing a water maze from walls of falling water that can be reconfigured to change the maze. In one embodiment, the apparatus is comprised of a plurality of spray bars that are each capable of producing a separate wall of falling water droplets and a plurality of water valves that are each associated with only one spray bar. The water valves can be used to define at least two different paths between the entrance and exit of the maze. The apparatus is also capable of being used to create interesting visual effects by projecting light/images on to multiple screens created by walls of falling water droplets.

Abstract: A vessel for use in rinsing a user's nasal cavity provides a resiliently collapsible main body, a self-sealing nozzle that increases in internal pressure when the vessel is squeezed, and a check valve in the nozzle to reduce back-wash into the vessel. A collar connects the nozzle and check valve to the main body. The check valve includes a first opening that provides fluid communication between the main body and a void formed in an interior of the nozzle and may allow pressure within the nozzle to increase upon deforming the main body. A second opening may provide fluid communication between an exterior of the main body and a fluid reservoir formed in the main body. The second opening may cooperate with a valve that allows selective fluid communication between the exterior of the main body and the reservoir formed in the main body.

Abstract: The present invention relates to a bottle for packaging a liquid to be distributed drop by drop comprising a reservoir the walls of which can be reversibly elastically deformed by letting air into the container, surmounted by a liquid dispensing head comprising a dropper nozzle protruding from the bottle and an anti-bacterial filter membrane, that is partially hydrophilic and partially hydrophobic, interposed across the path of the liquid and the air, at the base of the said nozzle. In the dispensing head, the proposal is to create the nozzle by itself out of a material containing a bactericidal agent that has the effect of preventing any bacterial growth on the surface of the said nozzle on the outside of the antibacterial membrane. A porous core is advantageously positioned inside the duct through which liquid is expelled and air is admitted.

Abstract: A liquid dispenser device including a valve with a valve member-forming portion for blocking and passing liquid out from the device, and a fastener edge for permanently fastening the valve relative to a container, the fastener edge including a tubular fastener wall sandwiched between an inner tubular wall and an outer tubular wall.

Abstract: A liquid dispenser device including a container for storing the liquid to be dispensed, a dispenser endpiece mounted on the container, being provided with a support and a liquid dispenser valve, the valve including an elastomer material and being capable of taking up a blocking configuration and a liquid-passing configuration by co-operating with the support, and a flowrate-reducer member including a liquid-deflector shape defining a flowrate-reducer channel, the flowrate-reducer member being a part that is separate from the support and separate from the valve.

Abstract: A gaseous fuel internal combustion engine includes an engine housing defining at least one cylinder, and an intake housing defining an intake passage fluidly connecting with the at least one cylinder. The engine includes a gaseous fuel delivery mechanism coupled with the engine housing and a distributed ignition promoting mechanism having a bead presentation device extending into the intake passage and configured to present a liquid bead of distributed ignition promoting material therein such as engine lubricating oil. During operation, gases passing through the intake passage dislodge the liquid bead from the bead presentation device and carry the distributed ignition promoting material into the cylinder for distributively igniting therein a mixture containing a gaseous fuel, air and the distributed ignition promoting material.

Abstract: A flexible and restorable container main body for housing a medicinal solution. A stopper member is fixed in an inside of a medicinal solution passage that communicates with the container main body for discharging the medicinal solution when the container main body is pressed and deformed. A pressure valve is arranged in the medicinal solution passage at a downstream side in the medicinal solution discharge direction further than the stopper member and is formed with an opening having a circular cross section which contacts a tip portion of the stopper member. A biasing member is provided at a downstream side for biasing the pressure valve in a direction opposite to the medicinal solution discharge direction by abutting against a peripheral portion of the opening of the pressure valve.

Abstract: The liquid material ejector has a liquid material supply port through which the liquid material is supplied, a nozzle for ejecting the liquid material, a valve block having a metering bore to be filled with the ejected liquid material and a liquid material supply channel communicating with the liquid material supply port, a selector valve having a first channel for allowing communication between the metering bore and the liquid material supply channel and a second channel for allowing communication between the metering bore and the nozzle, a plunger advancing and retracting in the metering bore, a plunger driving section for driving the plunger, a valve driving section for driving the selector valve, and a transmission section for transmitting driving power from the valve driving section to the selector valve. The plunger driving section, the valve driving section, and the valve block are arranged successively in the longitudinal direction.

Abstract: The invention relates to a one-way valve (1; 1?) for discharge regulation of a tube, the one-way valve (1; 1?) comprising a sealing means (9) and a ring support (8), with the sealing means (9) being at least partially inserted in the ring support (8), wherein the sealing means (9) comprises a sealing element (11) and a support element (12) that has at least one opening (10), wherein the sealing element (11) is connected to the support element (12) by anchoring means (13) and rests on the ring support (12) in a closed state of the one-way valve (1; 1?) thereby covering the at least one opening (10), and wherein the sealing element (11) is of lower bending stiffness than the support element (12) and the ring support (8). The invention furthermore relates to a tube with a tube head (2; 2?) and a container (6), wherein such a one-way valve (1; 1?) is inserted in the neck (4) of the tube head (2; 2?). Moreover the invention relates to a method for manufacturing such a one-way valve (1; 1?).

Abstract: The invention relates to a device for packaging and dispensing a generally liquid or viscous product, including a container for containing the product to be packaged and dispensed in the form of clean or sterile calibrated doses or drops using a dispensing accessory including a tip, wherein the assembly of the container and the accessory includes an additional flexible and deformable chamber actuated simultaneously with the accessory and capable of either sucking the residual drop at the end of said accessory after dispensing a calibrated dose or drop, or of blowing said calibrated dose or drop without permitting the formation of a residual drop. The invention can be used for packaging and dispensing clean or sterile products, in particular doses or drops in the field of ophthalmology.

Abstract: A dispenser for applying small amounts of liquid to a substrate. The dispenser includes a dispenser body, an actuator in the dispenser body, and a dispensing element including a dispensing element body removably coupled to the dispenser body. A valve stem is mounted for reciprocating movement within the dispensing element body. Additional aspects include a deformable valve seat, a deformable and resilient valve stem tip and a method of applying liquid in discrete amounts to a substrate.

Abstract: A head for dispensing liquid as a drip, includes a nozzle onto which a channel for ejecting the liquid leads. Air sucked in from the outside is returned through the channel in the opposite direction. In the nozzle, on the ejection channel, the drip dispensing head of the invention includes a valve functioning as a non-return valve for the circulation of the liquid being ejected. A mobile disc of the valve is produced so as to selectively enable air to pass through the valve when the disc is bearing against the seat thereof in a position for closing the liquid ejection channel. The disc is returned to the position by negative pressure applied upstream, which tends to suck in outside air. The disc is advantageously made of a microporous material, which provides antibacterial filtering of the return air.

Abstract: A liquid dispenser for dispensing drops including a housing, a liquid reservoir, a discharge opening through which liquid can be discharged from the liquid reservoir, and a drop formation surface surrounding the discharge opening, at which surface the liquid accumulates in order to be discharged from the drop formation surface as a drop. The drop formation surface has an outer limiting contour, the shape of which deviates from a circular shape. The dispenser is used to prevent contamination of the liquid to be dispensed.

Abstract: A liquid dispensing device including a sealing component which can take up a liquid release position and a liquid blocking position. The sealing component includes an elastomer part and a rigid part, these parts being fastened to each other when moving.

Abstract: A liquid material discharge device which can remove bubbles in a liquid material supplied to the device, can ensure a stable discharge amount of the liquid material, and can reduce the weight of a plunger section. The liquid material discharge device comprises a liquid material supply section for supplying the liquid material to be discharged, a measuring section having a measuring hole and a plunger sliding on an inner wall surface of the measuring hole to suck the liquid material into the measuring hole and to discharge the liquid material, a discharge section having a discharge port for discharging the liquid material, a valve section for changing over communication between the liquid material supply section and the measuring section and communication between the measuring section and the discharge section, and a debubbling mechanism provided in a flow path running from the liquid material supply section to the measuring section.

Abstract: A liquid dispenser device including a valve with a valve member-forming portion for blocking and passing liquid out from the device, and a fastener edge for permanently fastening the valve relative to a container, the fastener edge including a tubular fastener wall sandwiched between an inner tubular wall and an outer tubular wall.

Abstract: The present invention provides a device to facilitate the self-administration of eye drops. The device includes a body portion adapted for placement on the user's face, generally over the eye in which the drops are to be applied. The body portion preferably includes an integral handle which may be held between the thumb and forefinger of the user. Many embodiments may also incorporate a nose bridge to assist in locating the device in the correct position.

Abstract: Provided are a flexible and restorable container main body (1) for housing a medicinal solution; a stopper member (4d; 14d) fixed in the inside of a medicinal solution passage (P) communicated with the container main body (1) for discharging the medicinal solution when the container main body (1) is pressed and deformed; a pressure valve (5) arranged in the medicinal solution passage (P) at a downstream side in the medicinal solution discharge direction further than the stopper member (4d; 14d) being formed with an opening having a circular cross section which contacts the tip portion (4e; 14e) of the stopper member (4d; 14d); and a biasing member (7; 7a) at a downstream side for biasing the pressure valve (5) in a direction opposite to the medicinal solution discharge direction by abutting against a peripheral portion (5b) of the opening of the pressure valve (5).

Abstract: An assembly for securing an apparatus to a facemask includes a U-shaped frame extending along similarly shaped portions of the facemask. Removable attachment clips secure the frame to the facemask. Two cylindrical pins with circumferential radiused grooves are attached to and extend from the top portion of the frame. The pins mate with bores in a clevis assembly, to which the apparatus can be attached. A spring-loaded bar spans between the bores. The bores in the clevis assembly receive the pins and the spring-bias causes the bar to engage with the grooves to secure the clevis assembly to the frame. A lever is rotatably attached to the clevis assembly. Pivoting the lever works against the spring-bias to lift the bar out of the grooves, disengaging the pins, and allowing the clevis assembly to be disengaged from the frame and facemask.

Abstract: The invention relates to a device for packaging and dispensing a generally liquid or viscous product, including a container for containing the product to be packaged and dispensed in the form of clean or sterile calibrated doses or drops using a dispensing accessory including a tip, wherein the assembly of the container and the accessory includes an additional flexible and deformable chamber actuated simultaneously with the accessory and capable of either sucking the residual drop at the end of said accessory after dispensing a calibrated dose or drop, or of blowing said calibrated dose or drop without permitting the formation of a residual drop. The invention can be used for packaging and dispensing clean or sterile products, in particular doses or drops in the field of ophthalmology.

Abstract: The invention concerns a container for packaging a liquid (1) to be dispensed in drops. The container is reversibly deformable by air input and is equipped with a head (3) for dispensing liquid through a nozzle (5). The dispensing head (3) comprises a recessed body (4) which is nested inside a neck (10) of the container and which holds a hydrophobic microporous pad (8) arranged upstream of a chamber (9). Chamber (9) is provided with an air reservoir for preventing the liquid from passing through the microporous pad (8) between two liquid dispensing operations, when the nozzle (5) is sealingly obstructed with a cap (6), and for drying a partly hydrophilic and hydrophobic filtering membrane (7) arranged in the dispensing head (3).

Abstract: The device makes it possible to dispense predetermined metered quantities of liquid. It includes a sealing member that can take up a liquid release position, allowing liquid to flow out of the device, and a non-return position preventing liquid from flowing back into the device. The sealing member is provided with metering means for metering out the liquid to be dispensed.

Abstract: In a filtering dispenser container which includes a plug attached to a mouth portion of a bottle thereof and having a liquid discharge passage, and a filter and a check valve provided in the discharge passage, air lock is prevented, even if the container contains a highly percolative liquid, by preventing a very small amount of liquid percolating the check valve from reaching the filter. In the filtering dispenser container, a dam (14) is provided between the check valve (23) and the filter (25) for retaining a very small amount of the liquid percolating the check valve (23) when the check valve is closed. Thus, the filter (25) is prevented from being wetted with the liquid percolating the closed check valve (23) during storage or delivery of the container before the first use of the container.

Abstract: A liquid storage container (eyedrops container) comprises a container body having a liquid storage portion for containing medical liquid therein, and an instilling portion for allowing the medical liquid to flow out in an opened stage. An aerating device having a filter element and a check valve for allowing ambient air to flow in from outside and preventing the liquid from flowing out to the outside is installed at the bottom of the container body. Further, a cap having an opening member and a valve member is mountable on the container body.

Abstract: Apparatus and methods for dispensing small amounts of a viscous material onto a workpiece. The narrow-profile dispensing apparatus includes a fluid chamber, a nozzle, and a valve seat disk representing individual components that are removable from a main body of the dispensing apparatus for cleaning and/or replacement. The nozzle is coupled with the fluid chamber by a heat transfer body that may be cooled by, for example, a cooling fluid routed through an air pathway defined in the heat transfer body. The main body of the dispensing apparatus may be cooled by air exhausted from an air cavity of a pneumatic actuator regulating the movement of a needle to control the flow of viscous material in the dispensing apparatus.

Abstract: A fluid dispensing apparatus is configured to dispense a predetermined volume of fluid, and includes a fluid reservoir to hold a fluid to be dispensed, a dispense tube to dispense the fluid, and an elevator mechanism. The fluid reservoir receives a fluid from a fluid supply. A dispense tube has a dispense outlet, and is connected to an outlet port on the fluid reservoir. The elevator mechanism changes a relative vertical displacement between the dispense outlet and the outlet port, such that the fluid is dispensed when the dispense outlet is lower than the outlet port, and not dispensed when the dispense outlet is higher than the outlet port.

Abstract: A liquid delivering method and a liquid delivering device are provided, which solve the prior art problems including damages to a plunger and a valve seat. A liquid material delivering method includes the steps of advancing at high speed a liquid material delivering plunger with its distal end surface closely contacted with the liquid material, and subsequently abruptly stopping plunger driving means, thereby applying an inertial force to the liquid material to deliver the latter. A liquid delivering device includes a tubular metering section, a plunger internally contacting the metering section, a nozzle having a delivery port, a first valve for establishing communication between the metering section and the nozzle, a storage container for storing a liquid material, a liquid material feed valve (second valve) for establishing communication between the storage container and the metering section.

Abstract: A liquid crystal dispensing apparatus determines an amount of liquid crystal remaining within a liquid crystal container. The apparatus includes a liquid crystal dispensing unit for containing dispensable liquid crystal, capable of be dispensed directly onto a substrate and a main control unit for determining a total amount of liquid crystal dispensed onto the substrate based on a unitary amount of liquid crystal dispensed and the number of times the unitary amount was dispensed, and determining an amount of liquid crystal remaining by deducting the determined total amount dispensed from an initial amount of liquid crystal contained within the liquid crystal dispensing unit.

Abstract: A liquid dispensing device including a sealing component which can take up a liquid release position and a liquid blocking position. The sealing component includes an elastomer part and a rigid part, these parts being fastened to each other when moving.

Abstract: A dispensing assembly to be coupled to a resilient-walled vessel includes a tip defining an unobstructed bore positioned to be in direct communication with the vessel when coupled to the vessel. The tip includes a valve structured to allow drop-wise liquid dispensing when sufficient pressure is applied to the resilient wall of the vessel, and to prevent liquid back flow at zero as well as near zero pressure differentials across the valve. The assembly also includes at least one vent opening structured to allow air into and out of the vessel, and at least one filtration element extending across the vent opening. A cap having an antibacterial liner is also provided. The combination of the filtration element, the antibacterial liner in the cap, and the ability of the valve to prevent back flow enables the solution in the vessel to remain sterile, with no need for preservatives. Also included are methods for dispensing a preservative-free solution using a dispensing assembly of the present invention.

Abstract: An apparatus or dosing of liquids into a gas filled space comprising: a pump; a dosing orifice for introduction of liquid into the gas filled space; a discharge line, which connects a pressure side of the pump with the dosing orifice; and an elastic, liquid storer. The discharge line includes a shutoff valve between the pump and the dosing orifice, wherein the elastic, liquid storer is located between the pump and the shutoff valve, and the apparatus includes a first operating state, in which the pump runs in the case of closed shutoff valve, in order to store in the elastic, liquid storer a liquid amount under pressure.

Abstract: A container (1) with a liquid-squeezing nozzle has a main body (2) having an opening (21) and collecting liquid (L), a nozzle (3) mounted on the opening (21), and a cap (4) covering the nozzle (3) and being mounted on main body (2) removable. The nozzle (3) has a storage part (33), a liquid supplying path (34), and a valve (35). The storage part (33) has rubber elasticity, and collects liquid (L) without posture of the main body (2). The liquid supplying path (34) communicates from the opening (21) to the storage part (33). The valve (35) is usually shut, and is opened to spout liquid (L) of the storage part (33) when internal pressure of the storage part (33) exceeds constant pressure by shutting the communication between the storage part (33) and the liquid supplying path (34).

Abstract: A ring washer is provided at an end of the outlet of the dripping device. The ring washer has a center trough channel aligned with the outlet. A sphere is rotatably stuck at an end of the through channel of the ring washer. When the sphere is turned to a specific angle, a diametrical through channel of the sphere is substantially aligned with the through channel of the ring washer and the outlet and the fluid in the dripping device is therefore allowed to drip through. At the end of the through channel of the ring washer that interfaces with the sphere, a flexible ring element is provided that could conform to the curvature of the sphere and thereby compensate for slits that may exist between the not-so-perfectly-circular ring washer and the not-so-perfectly-round sphere.

Abstract: There is provided a backflow preventing mouth plug comprising an elastic membrane element having a discharge opening for discharging fluid and mounted to a mouth part of a container and a plug member disposed in the elastic membrane element to prevent unintentional outflow of the fluid. The plug member has a spherical seal surface with which the elastic membrane element elastically and closely contacts. At least one thick wall portion and at least one thin wall portion are alternately formed around the discharge opening of the elastic membrane element in a circumferential direction thereof.

Abstract: A valve (20) comprises a housing body (22) with a discharge channel (34), whereby an elastically-deformable membrane (24) is provided in the housing body which seals off the discharge channel. The membrane is sealed at the front end thereof and is arched to form a dome.

Abstract: A method and a device for accurate delivery, dripping and ejection in the form of flying droplets are provided. A liquid material is pressurized by a plunger sliding in a liquid feed passageway. A sliding surface of the plunger section sliding while closely contacting the inner wall surface of the liquid feed passageway divides the space into a nozzle-side liquid material part and a storage container-side liquid material part. The liquid material in the nozzle-side liquid material part is delivered by the plunger section advancing in the liquid feed passageway. A liquid material delivering device has a liquid material storage section, a nozzle section for delivering the liquid material, a liquid feed passageway for establishing communication between the storage section and the nozzle section, a plunger section, and plunger moving means for advancing and retracting the plunger section.

Abstract: A dispensation device having a nozzle defining a chamber and a dispensation orifice which communicates with the chamber. A transfer pin is moveably received within the chamber and moveable between a retracted position and a dispensing position. In the dispensing position, a portion of the contact end extends out of the chamber through the dispensation orifice. A driven element contacts the transfer pin, with the drive element magnetically coupled to a driven element. A drive element is oriented to magnetically move the driven element and thus magnetically position the transfer pin.

Abstract: A liquid crystal dispensing apparatus includes a liquid crystal material container filled with liquid crystal material a gas supply at an upper portion of the liquid crystal material container for pressurizing the liquid crystal material with gas, a needle seat positioned at a lower portion of the liquid crystal material container and having a discharge hole for discharging the liquid crystal material of the liquid crystal material container, a needle having first and second ends positioned within the liquid crystal material container to be movable along upward and downward directions, a first spring positioned at a first end of the needle, a solenoid coil positioned at the upper portion of the liquid crystal material container, a magnetic bar positioned adjacent to the first end of the needle within the solenoid coil for moving the needle along the upward direction by generating a magnetic force when power is applied to the solenoid coil, a second spring positioned around the magnetic bar within the magnetic

Abstract: A dry chemical dispensing system includes one or more chemical dispenser, a fluid supply conduit, and a fluid pressure source. The fluid supply conduit is adapted to couple to a fluid source, and supplies fluid from the source to dry chemicals installed in the chemical dispensers. The fluid supplied to the dry chemicals dissolves a portion into solution. The fluid pressure source maintains a substantially constant fluid pressure magnitude in the fluid supply conduit. Thus, any variations in pressure of the fluid source do not affect the pressure of the fluid supplied to the chemical dispensers. As a result, dissolved chemical concentration is substantially controlled.

Abstract: A gas cushion proportioning microsystem to proportion liquid volumes in the microliter and sub-microliter ranges, comprising a liquid reservoir including a storage space for the liquid being proportioned the boundary line of which is broken through by an outwardly leading liquid passage and a gas passage, a gas displacement system which has a micropump to pump a gas and a connection to the gas passage, and a proportioning control in an operative communication with the micropump to generate a negative pressure or positive pressure by actuating the micropump and to apply the negative pressure or positive pressure to the liquid reservoir in order to receive liquid in the storage space through the liquid passage or to deliver it from said space.

Abstract: In one embodiment, a microvolume liquid handling system includes a microdispenser employing a piezoelectric transducer attached to a glass capillary, a positive displacement pump for priming and aspiring transfer liquid into the microdispenser, controlling the pressure of the liquid system and washing the microdispenser between liquid transfers, and a pressure sensor to measure the liquid system pressure and produce a corresponding electrical signal. The pressure signal is used to verify and quantify the microvolume of transfer liquid dispensed and is used to perform automated calibration and diagnostics on the microdispenser. In another embodiment of the microvolume liquid handling system, a system reservoir is connected with tubing to a pressure control system for controlling the liquid system pressure in the system reservoir. The system reservoir is coupled to one or more microdispenser through a distribution tube having a branched section for each microdispenser.

Abstract: A dropping bottle for liquids, particularly pharmaceutical products, comprising an elastically deformable drop dispenser pipette, which is provided, at its top, with a dispensing hole and is coupled hermetically, in a downward region, to the neck of the bottle, and a cap for the upper closure of the pipette, at least one pair of mutually opposite semirigid wings, which wrap coaxially around the pipette and are adapted to compress it, by radial action of two fingers, in order to dispense constant doses of the contained liquid, the wings being shorter than, or as long as, the pipette.

Abstract: An apparatus for dispensing a measured quantity of a liquid has a container holding a quantity of liquid to be measured and dispensed and a conduit with an inlet end, an outlet end and a measuring section having a known volume. A sensor determines when the measuring section contains liquid. A passage with a first valve is provided for delivering liquid from the container to the conduit inlet end and air under pressure urges liquid from the container to the conduit. A source of air under pressure is connected to the conduit and a second valve controls delivery of air to the conduit from the source. A control connected to the sensor and to the first and second valves sequentially closes the second valve and opens the first valve to cause flow of liquid from the container to the conduit until the sensor determines that the measuring section contains liquid, and then closes the first valve and opens the second valve to admit air to the conduit, thereby expelling a measured quantity of liquid from the outlet end.

Abstract: The dispenser outlet (13) is microbiologically sealingly closeable by a valve stopple (25) which closes counter flow direction (11). Outlet 13 is manually reversely opened prior to the pump stroke against a spring (34). The medium reaches outlet (13) via throttles (22, 21, 49). Thus the medium creeps practically non-pressurized to an adhering face (51) of a droplet former (50). There the medium accumulates to a droplet suspending in the upside-down position. The medium contained in the dispenser (1) is effectively protected from germ contamination and the droplet may be simply administered to an eye or the like.

Abstract: A dispensing cap including a rotary valve communicating with an external open-ended dispensing tube portion, the valve being configured to communicate, in a venting position, with a venting pathway and to communicate, in a dispensing position, with an internal dispensing tube portion, wherein the valve is configured to pass from a closed position through a venting position to a dispensing position.