Abstract: A disposable pump for a liquid dispensing system includes a compressible container and a housing forming a chamber and a dispensing opening wherein the pressure in the chamber may be varied for pumping liquid from the container to the chamber, and from the chamber to the dispensing opening. A regulator is fixedly arranged in the chamber for regulating a flow of liquid between the container and the chamber and between the chamber and the dispensing opening. The regulator includes an outer valve for regulating the flow between the chamber and the dispensing opening. The outer valve is displaceable between a symmetrical position corresponding to a closed position, where the outer valve is in sealing contact with the housing, and a tilted position corresponding to a dispensing position.

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 dispensing container according to the invention includes a container body having a rod-like shape. The dispensing container is therefore compact and the user can hold the dispensing container as if the user holds a pen and use the thumb, the index finger, and any other finger to apply pressure to the dispensing container so as to dispense a drug solution. A heat insulating grip is attached to the outer circumferential surface of the container body, whereby heat originating from the body temperature of a finger of the user will not be transferred to the drug solution or volatilize it. No excessive dispensing that is not intended by the user will therefore occur. Since the container body is thin and hence unlikely crashed, the user can make adjustment of the pressure applied by the thumb, the index finger, and any other finger to readily extract a single droplet.

Abstract: A container including a nozzle and body depending therefrom. The body is preferably tubular and defines an interior which retains a product to be dispensed. A cap engages the nozzle to prevent inadvertent release of the product. In order to dispense the product, the cap is removed and pressure is applied to the body and the nozzle allows release of the product. The nozzle releases the product without exposing the remaining product to the external atmosphere, thus the sterility of the interior of the body is maintained and the shelf life of the product is increased. The nozzle includes an inner body, coupled to the tubular body, surrounded by a flexible outer cover. A seam between the inner body and flexible outer cover forms a one-way release valve wherein a portion of the seam remains closed during dispensing the product.

Abstract: A high flow volume nasal irrigation device includes a squeeze bottle, a reservoir of liquid and a volume of air. The bottle is configured to elastically deform in response to a manual pressure from a user and thus pressurize the liquid and air. The device also includes a dip tube configured to convey a pressurized liquid flow from a first end inside the bottle to a second outside end at a lower pressure. A removable nipple cap comprises an orifice and a coaxially aligned extension configured to seal with the dip tube and to form a conduit with the tube. At least one air metering orifice is formed in the fluid conduit accessible to the to volume of air. The air metering orifice is configured to introduce a plurality of air pockets from the air volume into the liquid flow and thus generate a pulsatile fluid flow in the conduit.

Abstract: A dosing and dispensing device for liquid detergent comprises a hollow body having a portion comprising a flexible material, an opening in said flexible portion, and means to spread at least a portion of the contained liquid detergent onto a surface of fabric. The opening is (progressively) opened when pressure is applied to said device on a surface to which the liquid detergent is applied. The opening is substantially closed when said pressure stops.

Abstract: A multi-chambered container, which reduces backflow and which can include a filter to remove contaminants from a beverage, a first chamber having a first opening disposed adjacent to a top of the container through which fluid enters the first chamber and a second opening disposed adjacent to a bottom of the container through which fluid flows out of the first chamber, a second chamber having a third opening disposed adjacent to the top through which fluid enters the second chamber and a fourth opening disposed adjacent to the top through which fluid is dispensed from the second chamber, and a fluid conduit connecting the second opening of the first chamber to the third opening of the second chamber.

Abstract: A closure assembly for a container includes a closure cap having an open ended body with a peripheral wall and a top wall provided with a dispensing passage which is defined by a collar arranged to the top wall. A self closing valve is arranged in the closure cap. The valve includes a slit central portion and a skirt extending downwardly from the central portion, which has an outwardly extending flange. The skirt is arranged in the collar and the flange is located below the collar and extends radially outwardly beyond it. On a lower surface of the top wall, a plurality of lips is formed outward from the collar. The lips are folded over the flange such that the latter is partly enveloped between the lips and the top wall so as to secure the valve in the closure cap.

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 flexible pouch and valve assembly is provided for aseptically storing a substance, dispensing multiple portions of the stored substance therefrom, and maintaining substance remaining in the pouch in an aseptic condition sealed with respect to ambient atmosphere. The flexible pouch and valve assembly are receivable within a relatively rigid housing, and are adapted to cooperate with a pump for pumping discrete portions of substance from the pouch and through the one-way valve to dispense the substance therefrom. The assembly comprises a flexible pouch defining therein a variable-volume storage chamber sealed with respect to the ambient atmosphere for aseptically storing therein multiple portions of the substance. A one-way valve of the assembly includes a valve body defining an axially-extending valve seat and at least one flow aperture extending through the valve body and/or the valve seat.

Abstract: A portable drinking device for pets being suitable for use when travelling includes a rigid wall structure, a water outlet passage, a water outlet valve and a removable closure element.

Abstract: A refilling unit for a dispenser containing a liquid or pasty media has a container which can be ventilated. A dosing pump is placed on the neck of the container. A first valve is provided in a transition from the neck to the dosing pump and a second valve on a discharge opening of the dosing pump. The dosing pump contains an elastic part having the first non-return valve. The elastic part encircles a lower peripheral collar of the neck and an annular lip thereof resting on the interior of the neck. The dosing pump further has a second elastic part containing the second non-return valve and encloses a delivery space. The second elastic part extends over the first part and encircles at least one upper peripheral collar of the neck. Recesses in the peripheral collars and at the front of the neck leave an airway into the container.

Abstract: A device for storing and dispensing a substance includes a container having a body defining therein a storage chamber for receiving and storing the substance. The container includes a head located at one end of the body and a first passageway that is in fluid communication with the storage chamber of the body and defines a flow path therebetween. The container also includes a pierceable wall located on an opposite side of the passageway relative to the storage chamber, and a first connecting portion for connecting another component thereto. The device also includes a one-way valve assembly that includes a valve body including a body base defining a second passageway and at least one piercing portion engageable with the pierceable wall of the container. The valve assembly includes a second connecting portion connectable to the first connecting portion of the container for fixedly securing the valve assembly to the container.

Abstract: A multi-chambered container for storing and dispensing flowable substances and method for using the same. The container includes a plurality of individual chambers each containing a flowable substance. Each chamber is in fluid communication with a discharge valve assembly. The valve assembly selectively dispenses a single one of the flowable substances in response to one of the chambers being pressed or squeezed by a user without simultaneously dispensing the remaining substances. In preferred embodiments, the container includes at least two, and more preferably three or more chambers.

Abstract: The invention relates to a support member and dispensing container assembly designed for a “squeeze to use” dispensing container. A support member 31 which rigidly attaches to a support structure like a wall, has a releasable attachment means 34 into which a free standing “squeeze to use” dispensing container for gels or liquids 1 can be inserted to releasably hold the container 1 to form a rigid connection whereby the dispensing aperture 3 of the dispensing container 1 faces downwards.

Abstract: A closure device to be connected to a container, which includes a cap, a moving shutter and a lid, where the moving shutter is housed in a compartment of the cap and presents a platform provided with holes, two elastically deformable tongues and a body with a cylindrical section held in place and guided by a chimney in the lid, where the lid includes a central hole that allows the product to exit. The moving shutter is operated by pressing on the elastic container, which allows a dose of the product to come out, the moving shutter then being returned to its rest position by the tongues.

Abstract: A squeezable bottle is disclosed. The squeezable bottle includes a pliable bottle skin, an outlet and a spinal assembly within the pliable skin, for providing longitudinal rigidity along an elongated axis of the bottle.

Abstract: The one-way valve for discharging a liquid out of a container, comprising an outer cap which is fastened to the container neck and comprises an exit channel for the liquid is characterized in that a valve body of elastic material is arranged between the container and the outer cap, that the valve body extends over the opening of the container neck and comprises a projection which projects into the exit channel of the outer cap and is arranged therein to be movable back and forth, that a space remains between the inner wall of the exit channel and the outer circumference of the projection, and that at least one cut severs the wall of the valve body, through which cut liquid passes into the space of the exit channel upon exertion of pressure on the container.

Abstract: A dispensing device for dispensing medicaments to a patient that is made up of first and second stand-alone, interconnectable assemblies. The first of these assemblies comprises a fluid reservoir assembly that houses a fluid reservoir defining component while the second assembly comprises a fluid delivery and control assembly that includes a novel flow control means that functions to control the flow of medicinal fluid from the fluid reservoir of the first assembly toward the patient via a plurality of fluid flow control passageways. Because the stand-alone fluid delivery and control assembly is initially totally separate from the fluid reservoir assembly of the apparatus, the fluid flow passageways of the fluid delivery and control assembly can be effectively sterilized using conventional gamma ray sterilization techniques without adversely affecting the medicament contained within the fluid reservoir of the apparatus.

Abstract: A one way valve assembly flows a sterile flowable substance from a source to an outlet orifice and prevents any backflow of contaminants through the one way valve assembly when the flowable substance ceases to flow. The valve assembly includes an elastomeric membrane which aids in preventing any backflow of contaminants when dispensing of the flowable substance is stopped.

Abstract: A squeezable bottle containing fluids has a mouth for dispensing the fluid. An elastic valve is retained between a closing support retainer and a containment ring. The closing support retainer is secured to the mouth of the bottle and to the elastic valve and has passages for fluid through itself. The containment ring prevents the elastic valve from expanding too far outwardly over at least some of the valve's surface. A fluid passage is formed between the elastic valve and a rigid cap that leads to a dispensing opening. The dispensing opening is sealed by a round disc which is integrally formed with the elastic valve and seats on seat on the cap. This arrangement allows the contents of the bottle to remain sanitary over time.

Abstract: Containers (10) and methods are provided for dispensing a liquid concentrate (20) utilizing one or more desirable properties including a generally consistent discharge across a range of squeeze forces, a generally consistent discharge with the same force without significant dependence on the amount of liquid concentrate in the container, a substantially dripless or leak proof outlet opening (31), a jet (34) that minimizes splashing when the liquid concentrate impacts a target liquid (43), and a jet that maximizes mixing between the liquid concentrate and the target liquid to produce a generally homogenous mixture without the use of extraneous utensils or shaking. Also provided are liquid beverage concentrates that can be cold filled during packaging, while maintaining shelf stability for at least twelve months at ambient temperatures. Concentrate can have a combination of low pH and high alcohol content such as a pH less than 3.5 and alcohol content greater than 5 percent by weight.

Abstract: A dispensing valve includes a resiliently flexible mounting portion, a resiliently flexible opening portion disposed radially inwardly of the mounting portion, and a resiliently flexible isolating portion disposed radially between and coupled to the mounting and opening portions. The isolating portion extends both radially outwardly and axially to form a first radial space between the opening and isolating portions, and is spaced radially inwardly of the mounting portion to form a second radial space between the mounting and isolating portions. The opening portion may include one or more slits.

Abstract: A fluid dispensing valve is provided with a peripheral mounting portion and a connecting sleeve connecting the peripheral mounting portion with a head which defines a dispensing orifice. The valve head includes a recessed exterior surface and an inwardly projecting interior surface. The valve head has a peripheral surface extending from the exterior surface toward the interior surface. The connector sleeve is connected to the valve head at a location that is at the most axially inward extent of the peripheral surface.

Abstract: An automatic liquid stop bag with a bending portion comprises: two outer films, two inner films, a storage area, a discharge channel, a bent portion, an inlet, an outlet and a tear portion. The storage area is formed by coupling the two outer films by hot sealing. The two inner films are disposed between the two outer films and coupled the two inner films by heat sealing to form a discharge channel or the discharge channel is coupled to the two inner films by heat sealing and formed between the two inner films, and the internal sides of the two inner films are not coupled to form the inlet and outlet, and the tear portion is formed at an edge of the two inner films and the two outer films and separated from the two inner films to expose the outlet of the discharge channel.

Abstract: A fluid dispensing apparatus (10) comprising a collapsible bellows (12) for storing the fluid to be dispensed, a housing (14) for receiving the collapsible bellows and means (30) for compressing the collapsible bellows on actuation of the fluid dispensing apparatus (10) so as to eject the fluid through an outlet (22) of the bellows (12), wherein the housing (14) is configured to guide the bellows (12) so as to impede lateral deformation of the bellows (12) during compression thereof.

Abstract: A high flow volume nasal irrigation device for alternating pulsatile and continuous fluid flow includes a tube comprising a free end and a housing at a second end adjoined to a cap with a coaxial cap nipple. A valve assembly inside the housing comprises a disk-like valve and a plurality of housing standoffs configured to stop the valve but allow a fluid flow in the housing and out the nipple. A cylindrical elastic valve seat is adjoined to the cap nipple and forms a gap with the valve on the standoffs. A spring opposes the valve moving toward the valve seat from the standoffs and assists in returning the valve from the seat to the standoffs and thus with the valve seat creates a periodic pulsatile fluid flow in the nipple in response to a chamber pressure which exceeds a critical chamber pressure threshold.

Abstract: A Dispenser of fluid product includes a ring nut (2) able to be associated with a container of a fluid product and a dispensing head (7), substantially hollow and coaxially slidable relative to the ring nut. The dispensing head includes a dosing chamber (13) positioned inside the dispensing head, a dispensing nozzle (11) to allow escape of the fluid product. The dispensing head further includes a deformable membrane (14) fastened to the ring nut and a top wall (9) facing the membrane and defining the dosing chamber in combination with the membrane; the top wall being movable between a first position, distal from the ring nut, in which a volume of the dosing chamber is greatest and the dosing chamber is isolated and at least in part filled with fluid product, and a second position, proximal to the ring nut, in which the volume of the dosing chamber is smallest.

Abstract: A foam pump for pumping a foamable liquid from a foamable liquid source includes a premix chamber having an interior volume receiving the foamable liquid from the foamable liquid source. The foam pump also include a premix chamber air inlet valve, and a collapsible air chamber surrounds the premix chamber and fluidly communicates with the interior volume of the premix chamber through said premix chamber air inlet valve. The collapsible air chamber has an expanded volume and a compressed volume, and, when the collapsible air chamber is moved from its expanded volume to its compressed volume, air within the collapsible air chamber is forced into the premix chamber through the premix chamber air inlet valve and mixes with the foamable liquid received in the premix chamber. An outlet communicates with the premix chamber and, upon compression of the collapsible air chamber from its expanded volume to its compressed volume, foamable liquid and air are advanced from the premix chamber into the outlet.

Abstract: A liquid applicator contains a hollow body portion incorporating a reservoir portion for containing a liquid to be applied by the applicator; an outlet portion having first and second ends, the first end being connected to an outlet mouth of the reservoir; an applicator tip assembly provided on the second end of the outlet portion for discharge of liquid from the reservoir portion via said outlet portion; a plug located in the mouth of the reservoir portion; and actuator for applying an actuating force to the mouth wall to effect movement of the plug towards the outlet portion and for squeezing the walls of the reservoir portion to effect discharge of liquid from the reservoir portion via the outlet portion and the applicator device. The liquid to be dispensed is retained in a reservoir that is sealed by a plug until usage.

Abstract: The packaging comprising an essentially dimensionally stable, elastically deformable external container, an easily deformable inner bag arranged therein, which receives the filling material, and a valve is characterized in that the valve comprises a base body which extends over the opening of the external container and comprises at least one through opening for the filling material and a valve holder which has fastened therein a valve body which comprises an elastically deformable partition wall tightly sealing the valve holder, and a valve pin pointing away from the external container, said partition wall together with the valve holder delimiting an air chamber under the valve pin, and comprising a cap which is fastened to the neck of the external container and covers the base body and the valve body and which delimits a receiving chamber for the filling material between the cap and the base body and comprises an outlet opening for the filling material which in the unpressurized state of the packaging is clo

Abstract: A compact, nonelectric fluid dispenser for use in controllably dispensing beneficial agents such as propofol and dexmedetomidine hydrochloride to patients. The dispenser includes a fluid flow control assembly that precisely controls the flow of the medicament solution to the patient and embodies a collapsible drug container that can be filled in the field with the beneficial agents to be delivered to the patient. The unit-dose fluid dispenser of the invention is presented in a sterile and aseptic manner, where the drug has been pre-filled in the system, so that the practitioner cannot mistakenly give the wrong drug to the patient. The dispenser uniquely provides a more efficient medicament delivery system for procedure rooms, such as the endoscopy center, so that a greater number of patients can be treated per day at a higher standard of care with increased profits for the healthcare provider.

Abstract: A device for the complete emptying of a tube including a tube body with a tube head and a tube opening located in the head, with the device including a base body with a slot-shaped tube receptacle as well as a shaft rotatable in the base body with a holder for the crimped end of a tube, the shaft being rotatable in the base body to roll up the tube body on the shaft and the tube contents being expressible by pulling the tube body through the slot-shaped tube receptacle. In order to be able to empty any residue contained in the tube head, the design provides for a lever to be articulated on the base body, with which the tube head can be pressed against the base body for a complete emptying of the tube.

Abstract: A flexible, body attached device is disclosed for dispensing skin treatment and topically-absorbed medicinal treatments. The device comprises a dispensing reservoir that is caused to dispense treatment through a slit-based diaphragm valve upon the application of simple pressure to the device. Various embodiments of the invention include variations in the structure of the valve, reservoir, and body attachment.

Abstract: An apparatus for extracting the contents from a refill pouch comprises a holding member for holding the pouch with its extraction port facing downward, and a pump attached to the extraction port of the pouch. The pump has a pump body defining a housing space having an inlet opening and an outlet opening, an inlet-side valve which communicates with the extraction port to open and close the inlet opening so that the contents can be introduced into the housing space from the pouch, and an outlet-side valve to open and close the outlet opening so that the contents in the housing space can be discharged through a nozzle that communicates with the outlet-side valve. The pump wall portion is constituted by a resiliently compressible, restorable and flexible material so that the contents in the housing space can be extracted through the nozzle by manually squeezing the pump wall portion thereby pressurizing the housing space.

Abstract: A refillable bottom dispensing package forming a closed space in which fluid material can be stored and from which such material can be dispensed, the package having a rigid wall adjacent a bottom thereof, the wall having a hole, a resilient valve regulating dispensing of the fluid material contained in the package through the hole, the valve being closed to the passage of fluid material through the hole when the contents of the package are substantially at atmospheric pressure and being opened by pressure on the contents when the pressure is above atmospheric pressure, the valve forming a flap seal against a surface of the wall, the sealing action of the flap seal against the wall surface being free of influence from structural elements of the package while being directly responsive in its sealing force against the wall surface to the pressure level of the contents in the package space, the inter-relationship of the flap seal and the wall within the package being arranged to avoid impeding removal of the val

Abstract: A liquid dispensing device includes a storage container having an opening and dome pump assembly attached thereto substantially over the opening for metered dispensing. The dome pump assembly is integrally formed with a dome button, top portion extension and valve to facilitate manufacture and reduce costs of the pump while improving performance thereof. The valve is employed to pull liquid from the storage container into the dome for metering. An exit passageway formed from the extension and container wall serves as an output valve. The user squeezes the dome and the opposite side of the container pouch concurrently to seal the flapper valve to urge liquid out through the exit passageway for actual dispensing.

Abstract: A method of dispensing a fluid comprises providing a container made from flexible material and having an outer surface, a first opening and an interior fluid storage region therein. The method further comprises providing a volume of fluid within interior fluid storage region and providing a flexible metering housing, having a metering chamber therein with a predetermined volume, disposed in fluid communication with interior fluid storage region. The method further comprises providing an intake valve disposed between container and flexible metering housing permitting unidirectional fluid flow from interior fluid storage region into metering chamber. The method further comprises providing an exit port in fluid communication with container with an output valve disposed between exit port and metering chamber, depressing and releasing flexible metering housing, and filling the metering chamber with a volume of fluid by vacuum force in an amount by the volume of the metering chamber.

Abstract: A flexible pouch and valve assembly is provided for aseptically storing a substance, dispensing multiple portions of the stored substance therefrom, and maintaining substance remaining in the pouch in an aseptic condition sealed with respect to ambient atmosphere. The flexible pouch and valve assembly are receivable within a relatively rigid housing, and are adapted to cooperate with a pump for pumping discrete portions of substance from the pouch and through the one-way valve to dispense the substance therefrom. The assembly comprises a flexible pouch defining therein a variable-volume storage chamber sealed with respect to the ambient atmosphere for aseptically storing therein multiple portions of the substance. A one-way valve of the assembly includes a valve body defining an axially-extending valve seat and at least one flow aperture extending through the valve body and/or the valve seat.

Abstract: The squeeze container is made of a flexible material and is configured to store and dispense viscous fluid. The squeeze container is fitted with an automatic dispensing nozzle which allows flow when the container is squeezed and cuts off flow when the squeezing forces are removed. A stand is associated with the squeeze container, designed to hold the container in the nozzle down position. The stand may serve as a cover to protect the material before dispensing. The container may have a refill aperture and cap as well as a suspension device incorporated therein.

Abstract: A one way valve assembly flows a sterile flowable substance from a source to an outlet orifice and prevents any backflow of contaminants through the one way valve assembly when the flowable substance ceases to flow. The valve assembly includes an elastomeric membrane which aids in preventing any backflow of contaminants when dispensing of the flowable substance is stopped.

Abstract: A liquid dispensing device includes a storage container and dome pump mechanism attached thereto for metered dispensing. A one-way valve is employed to pull liquid from the storage container into the dome for metering. An exit passageway serves as an output valve. Each time the dome pump housing is depressed, a substantially equal volume of fluid is dispensed from the container. To prevent accidental dispensing, the one-way valve in the dome pump remains normally open and unsealed to allow backflow of liquid back into the storage container pouch when pressure is placed on the dome. The user squeezes the dome and base plate together to seal the one-way valve to urge liquid out through the exit port for actual dispensing. The dome pump is integrally formed with a top portion of the exit pathway. Optionally, the base plate and bottom portion of the exit pathway are also integrally formed to facilitate manufacture and reduce costs of the pump while improving performance thereof.

Abstract: This assembly is of the type including: a container (4) for containing the liquid; a liquid dispensing device (6), including: a spout (20) through which liquid can pass out and air can come in; and elements (28) for filtering liquid and air passing through the spout (20); and a cap (14) for closing the container (4). One feature of the invention is that the assembly includes elements (38, 41, 39) for encouraging the entrance of air and/or the return of a residual quantity of liquid trapped in the spout (20) after dispensing some liquid, through the filtering elements (28), into the container (4).

Abstract: A backflow preventing plug, a container, and a pouring device in which a container body and a plug member are provided separately in a simple shape, and tight-contact property between the plug member and a resilient member is enhanced to improve a backflow preventing function are provided. A backflow-preventing plug includes a resilient membrane formed of a thin film for defining a flow path having an inlet port and an outlet port, and a ball-shaped plug member retained in the flow path of the resilient membrane and formed with a spherical sealing surface for restricting fluid flow by coming into tight resilient contact with a middle portion of the resilient membrane. In a container, the backflow preventing plug is attached to a container opening of a container body accommodating contents. A pouring device includes, for example, a container holder accommodating and holding the container and allowing the container body to be pressurized from the container opening side to be contractingly deformed.

Abstract: A fluid drawing device (10) comprising a hand pump (11) connected to a fluid reservoir (12). The reservoir (12) has an inlet/outlet orifice (18) through which fluid can be drawn into and expelled from the reservoir (12). The pump (11) comprises a squeeze bulb (13) with an air release valve (14) in its wall and an air intake valve (15). Compressing the bulb (13) releases the air to the atmosphere through the release valve (14), subsequent decompression of the bulb (13) draws air through the intake valve (15) from the reservoir (12) reducing the pressure in it to draw fluid through the orifice (18) into the reservoir (12). Pushing a plunger (24) slidably housed within the reservoir (12) expels the fluid out through the orifice (18).

Abstract: A discharger for a flowable medium, having a pumping device with a pumping chamber which is closed off on one side by a longitudinally movable piston, is provided. The pumping chamber on the piston side is hermetically sealed against an environmental atmosphere outside the discharger by a gas-impermeable and at least partially flexible diaphragm, and the diaphragm, in its marginal region, is fixedly connected to a housing of the discharger. The discharger is used for high sealing requirements against the ingress of impurities.

Abstract: A liquid dispensing device includes a storage container and dome pump mechanism attached thereto for metered dispensing. A one-way valve is employed to pull liquid from the storage container into the dome for metering. An exit passageway serves as an output valve. Each time the dome pump housing is depressed, a substantially equal volume of fluid is dispensed from the container. To prevent accidental dispensing, the one-way valve in the dome pump remains normally open and unsealed to allow backflow of liquid back into the storage container pouch when pressure is placed on the dome. The user squeezes the dome and base plate together to seal the one-way valve to urge liquid out through the exit port for actual dispensing. Also, interior pouch force creates backflow through the exit port back into the containment chamber to further prevent leakage.

Abstract: A fluid-pumping-dispenser that is composed of a pump-tube of tubular shape, and provided on one end of a plug to close and open an outlet from a container. The other side of the pump-tube is mounted on either a housing with a valve-rod, or a front-valve with an adapter will prevent the fluid from returning back to the pump-tube. To provide the power an actuator is provided that will pinch the pump-tube, and will the help of the valves described will pump fluids from a container through the pump-tube and to the outside by the nozzle on the housing. To complete the assembly a container is provided with a piston to store the fluid.

Abstract: A reusable continuously sealing one-way valve assembly and delivery system flows a sterile flowable substance from a source to an outlet orifice and prevents any backflow of contaminants through the continuously sealing one way valve assembly when the flowable substance ceases to flow. The valve assembly includes an elastomeric membrane which aids in preventing any backflow of contaminants when dispensing of the flowable substance is stopped. Multiple dosing of preservative-free flowable substance is provided.

Abstract: A delivering tap (1) is described, for delivering liquids from a container, comprising at least one body (3) made in a single piece and integral with at least one elastic, flexible thrusting pushbutton (17) and at least one flexible sealing lip (25), and at least one valve member (5) with integrated spring inside the body (3), the body (3) comprising at least one head (11) equipped with at least one delivering beak (12) for delivering liquids, the delivering beak (12) communicating with one and only internal chamber (13) of the body (3) into which during the delivery of liquid a lower space for passing liquid (L) and an upper space for passing air (A) are naturally defined.