EP1286900B1 - Carbonated beverage container with suction spout - Google Patents
Carbonated beverage container with suction spout Download PDFInfo
- Publication number
- EP1286900B1 EP1286900B1 EP01938176A EP01938176A EP1286900B1 EP 1286900 B1 EP1286900 B1 EP 1286900B1 EP 01938176 A EP01938176 A EP 01938176A EP 01938176 A EP01938176 A EP 01938176A EP 1286900 B1 EP1286900 B1 EP 1286900B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- membrane
- container
- flow control
- control element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D83/00—Containers or packages with special means for dispensing contents
- B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
- B65D83/16—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant characterised by the actuating means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/02—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants
- B67D7/0277—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring liquids other than fuel or lubricants using negative pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D47/00—Closures with filling and discharging, or with discharging, devices
- B65D47/04—Closures with discharging devices other than pumps
- B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
- B65D47/24—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat
- B65D47/248—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge with poppet valves or lift valves, i.e. valves opening or closing a passageway by a relative motion substantially perpendicular to the plane of the seat the valve being opened or closed by imparting a motion to the valve stem
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
- B65D2517/0001—Details
- B65D2517/0031—Reclosable openings
- B65D2517/0046—Unusual reclosable openings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
- B65D2517/0001—Details
- B65D2517/0047—Provided with additional elements other than for closing the opening
- B65D2517/0049—Straws, spouts, funnels, or other devices facilitating pouring or emptying
Definitions
- the invention relates to completely closed carbonized beverage cans, bottle or closed drinking cups used to prevent spilling of fluid, contained in the can, bottle or drinking cup, while in action and fluid is withdrawn from the can, drinking cup or handheld container, US class 220/706; 220/85; 222/214; 220/713; 220/714 etc. (International Patent Classification A47G 19/22; BD65d 1/00; BD65D 25/48 etc.)
- Carbonated beverages are supplied in aluminum cans, bottles or other containers for consumption. As soon as the can or bottle is opened, the fluid starts deteriorating and becomes flat in short time thereafter. If supplied in bottles, the beverage is normally poured into a cup for immediate drinking, while the rest is kept under pressure in the bottle for future use by a screw cap.
- Aluminum cans are commonly opened by pulling away a piece of the top closure and cannot be closed thereafter. This means that the fluid needs to be consumed more or less immediately after opening. Also when poured from a bottle into a cup the amount may be too much for immediate consumption and someone may want to use it over an extended period of time. In prior art solutions it became apparent that no pressure can be maintained in a so called non spilling cup or handheld container and does not prevent spilling of fluid, while in action with carbonized or hot fluids.
- the object of the invention is thus maintaining the beverage carbonized in a container that is in use, while access to the fluid is easy and spilling is prevented during motion, under all positions of the container.
- Drinking cups and handheld containers with leak tight top-covers combined with drip-less spout and air vent are provided throughout the years in many shapes and forms, in order to prevent spilling of the liquid, contained therein for temporarily storage.
- the spout and vent are provided with valves that enable fluid to be withdrawn from the container or cup, when suction is applied to the spout.
- the reduction in fluid content in the container is replaced by air that flows through a second opening in the cover.
- This air vent holds a control valve that opens when the pressure sinks below the atmospheric outside pressure, due to the suction action at the spout.
- a drip less feeding/ training container of this nature has been described by Belanger in U.S. patent description 5,079,013 ; U.S. PAT.
- the present invention overcome all these problems as well as for beverage cans, bottles as for closed non-spilling drinking cups combining a number of advantages over prior art solutions, in the same application being: Maintaining the gas pressure to keep the fluid carbonized; easy transport of partially filled containers and no fluid is spilled while drinking and used in action.
- the present invention has an additional advantage of being more hygienic than using a beverage can closure and/or drinking adapter as provided for in e.g. U.S. PAT. 4,883,192 of Krugman and other inventions thereafter.
- the present invention presents two main embodiments mainly defined in claims 1 and 2.
- One embodiment comprises a flow control element with a spout for sucking fluid from a pressurized cup, metal beverage can, bottle or handheld container, whereby the fluid is a carbonized beverage or hot drink such as coffee or tea.
- the flow control element is activated by sucking on the spout, whereby a membrane type element lifts a valve that closes off the inside of the container from the outside.
- the inside of the container normally has a higher gas pressure than the atmospheric outside pressure caused by the carbonized fluid or expanding air that is heated by a hot drinking fluid within the confinement of the drinking cup.
- the flow control element comprises a spout, gas tight connected to a housing, a spring, a centrally perforated membrane shape element connected to a valve stem, which is hollow in nature, to enable fluid to flow from the container to the spout through the opening in the membrane; a valve stem guide with valve seat, which is an extrude part of the housing and a valve of soft resilient material.
- the valve is held firmly in the closed position by a spring that pushes onto the membrane and valve stem, towards the valve seat. As the valve is connected through the valve stem with the membrane, movement of the membrane in axial direction, results in the same movement of the valve.
- the membrane By reducing the pressure on one side of the membrane by suction on the spout, the membrane will displace the valve thereby opening up the inside of the container and allowing fluid to flow.
- the fluid flows from the container through a thin flexible tube in the form of a straw inside the container, that reaches from the bottom of the container to the valve opening, through the valve stem, through the membrane into the spout to the mouth.
- the valve closing area is substantially smaller than the active surface area of the membrane. A small suction pressure difference over the membrane will result in a relative large force to open the valve against the pressure of the spring, that normally keeps the valve closed.
- the combination of the valve, spring and membrane is therefore an essential part of the invention enabling the flow control element to work.
- the housing of the flow control element is either gas tight fit in a hole in the cover of an aluminum beverage can, or bottle or is an integral part of a gas tight cover of a drinking cup.
- the lower side of the membrane is held at atmospheric pressure by an opening in the housing of the flow control element.
- an air vent is provided in the valve guide that only opens when this is the case, to replace the reduced fluid amount.
- the invention includes also an embodiment whereby a membrane is used that pushes a valve open rather than pulling, as described above.
- the membrane is reversed, having a sliding airtight seal, which is part of an extruded tubular extension within the spout that mates with the extruded tubular extension of the centrally perforated membrane.
- the embodiment further holds a valve, that is part of the pressure boundary of the container, which valve is pushed open against the inside pressure of the container, by a sucking action on the spout.
- the flow element closes off the inside of the handheld container from the outside under all circumstances and position of the container when not in use for drinking.
- FIG. 1 shows a partially opened-up, outside perspective view of a beverage can with a centrally located flow control element in the top cover, extending from the outside to the inside of the can, of the first preferred embodiment. Details of this embodiment are shown in a partially cross-sectional drawing of FIG. 3, while FIG. 4 shows an enlarged cross section of the flow control element, for clarification.
- the beverage can, enclosed by a cylindrical wall 1, a bottom 2, a top cover 3 and a flow control element 4 holds a carbonized beverage 5 that remains under a gas pressure (P3) 6 by the carbonization process.
- This gas pressure can be substantially higher than the outside atmospheric pressure (P1) to keep the beverage carbonized for the pleasure of drinking the fluid.
- the flow control element 4 maintains this gas pressure as long as needed, while access to the fluid in the can remains possible.
- This is accomplished by a housing 9 that fits tightly into the upper cover 3 of the beverage can and forms part of the barrier between the inside and outside of the can.
- a spout 7 is gas tight connected to this housing and keeps a centrally perforated membrane 8 in place, that fits on the suction side gas tight into the housing 9, while on the other side an atmospheric pressure is maintained. Above and below the membrane, adequate space is available to allow the membrane to move a few millimeters up and down at the center area, while fixed at the periphery.
- the membrane 8 is integrally connected to a valve stem 10, while the valve stem is hollow in nature for allowing the fluid to pass through, while also the membrane has a central hole at which location the valve stem is gas tight connected to the membrane.
- the valve stem 10 fits into the lower cylindrical part 14, acting as a valve stem guide, forming an integral part with housing 9, providing little clearance between these parts. This clearance is slide fit, allowing movement of the valve stem on one side but being tight enough, not to allow fluid or gas to pas through.
- the lower part of the valve stem guide 14 holds also the valve seat 13.
- a valve 11 of resilient material is held in place that closes off the access opening 12 to the valve seat 13, to the inside of the beverage can.
- a flexible tube (straw) 15 is used, that is tightly fixed to the valve opening 12 and reaches down to the bottom of the can.
- the valve is closed by an urging member which can be a spring 16 on the suction side of the flow control element, that pushes the membrane 8 and therewith the valve 11 to its rest position.
- the hollow valve stem is narrowed down in the lower part 17, while in this tapered section one or more holes 18 are made, through which the fluid passes when the valve 11 is lifted from its seat 13.
- a small air passage 19 is provided in the housing 9 to assure that the backpressure on the lower side of the membrane remains atmospheric (P1).
- the flow control element 4 is thus activated: Suction by mouth to the spout 7 will move the membrane 8 upwards, thereby lifting the valve from its seat against the spring pressure.
- the magnitude of the force to activate the valve can be determined from the pressure difference over the membrane times the active surface area of the membrane plus the pressure difference over the valve times the active surface area of the valve minus the urging force (F) of the spring, which is (P1-P2) * A + (P3-P2) * a - F.
- A the active surface area of the membrane; being 1 ⁇ 4. ⁇ .D 2 in which “ ⁇ ” (pi) is 3.14 and “D” is the active membrane diameter and "a” is the active surface area of the valve being 1 ⁇ 4. ⁇ .d 2 in which " ⁇ " (pi) is 3.14 and “d” is the active valve diameter.
- F is the urging force of the spring in combination with the resilient force of the membrane.
- a vent 20 is provided, which consists of one or more holes in the upper part of the valve stem guide 14. These vents are normally closed off by a rubber band 21 of adequate width to cover the holes completely and which will act as a valve, allowing air to pass from the air passage 19 into the area under the membrane, along the upper portion of the valve stem guide through the vent holes 20 into the can. This feature will take care that the inside pressure P3 of the can will never drop substantially below atmospheric outside pressure P1.
- valve stem guide 14 The upper portion of the valve stem guide 14 is therefore slightly enlarged to allow air to pass-by.
- a hygienic cap 21 is provided that tightly fits onto the shoulder of housing 9 to keep the spout from getting dirty during transport and when not in use.
- FIG 5-a) through 5-e) the individual parts are drawn that makes up the flow control element as described of the first preferred embodiment.
- This embodiment is not meant to limit the invention to other configurations, whereby the same principle of force enlargement is applied by using a perforated membrane that activates a valve.
- FIG 2 and 6 second preferred embodiment is shown in applying a flow control element to a non-spilling drinking cup, whereby the top cover is tightly screwed onto the cup or container.
- the housing 9' of the flow control element 4' is an integral and leak tight element of the top cover, whereby the cup can be filled with carbonized beverages, hot and cold drinks without spilling after closure.
- the air above the fluid will expand, building up pressure in the cup or handheld container.
- FIG. 2 a perspective view of a partly opened cup or container is shown in FIG. 2, while a partial cross-section of the same embodiment is shown in FIG. 6.
- FIG. 6 applies to a metal or plastic container 22, with a removable top cover 23 that is screwed onto the container 22 and having a gas tight seal of resilient material 24, preventing the container from leaking when filled with a beverage, hot or cold drink.
- the housing 9' of the flow control element 4' is now integrally molded with the top cover 23, thereby differing slightly from the flow control element of the beverage can.
- the spout 25 is removable to provide access to the inside of the flow control element for cleaning purposes.
- the remaining parts are substantially the same as used for the (aluminum) beverage can of FIG 1, 3,4 and 5.
- FIG. 7 a third embodiment of the flow control element 4" is shown, which can be applied to beverage cans, bottles or drinking cups.
- the prime difference with the previous described embodiments of the invention is that the valve is pushed open by the suction pressure, rather than that the valve is drawn from its seat.
- the third embodiment comprises the following parts: A centrally perforated membrane 8" having an extruded seal tube 40" and a seal structure 26" that fits gas tight but moveable in axial direction in a cylindrical tube 27", that forms part of the spout 7". Spout 7" holds the membrane 8" in place and forms at the rim a gas tight connection with a valve housing 9" having a seal 30".
- the flow control element assembly is fixed to the top of a beverage can, bottle or drinking cup 1" with a screw cap connection 31".
- the valve holder 14 which is an integral part of the valve housing, holds a valve seat 13" with a valve 11" forming a hermetically sealed barrier of the inside of the beverage holder 1" with the outside, letting no fluid to pass, when not in use.
- the valve 11" is connected through the valve stem 10" with the membrane 8" by a valve stem holder 17", which is large enough to cover the central opening of the membrane and can even be part thereof, but at the same time allows fluid to pass.
- the valve stem holder 17" on which an urging force or spring 32" acts holds the valve 11" gas tight to its seat 13" when no suction is applied to the spout 7", but allows fluid to pass when set in operation during suction.
- An open-air passage 29" is provided in a part of the spout, thereby assuring that space above the membrane is kept at atmospheric pressure.
- a spring 32" can be added helping to keep the valve in its closed position, if the spring action of the membrane prove to be inadequate.
Abstract
Description
- The invention relates to completely closed carbonized beverage cans, bottle or closed drinking cups used to prevent spilling of fluid, contained in the can, bottle or drinking cup, while in action and fluid is withdrawn from the can, drinking cup or handheld container, US class 220/706; 220/85; 222/214; 220/713; 220/714 etc. (International Patent Classification A47G 19/22; BD65d 1/00; BD65D 25/48 etc.)
- Carbonated beverages are supplied in aluminum cans, bottles or other containers for consumption. As soon as the can or bottle is opened, the fluid starts deteriorating and becomes flat in short time thereafter. If supplied in bottles, the beverage is normally poured into a cup for immediate drinking, while the rest is kept under pressure in the bottle for future use by a screw cap. Aluminum cans, however, are commonly opened by pulling away a piece of the top closure and cannot be closed thereafter. This means that the fluid needs to be consumed more or less immediately after opening. Also when poured from a bottle into a cup the amount may be too much for immediate consumption and someone may want to use it over an extended period of time. In prior art solutions it became apparent that no pressure can be maintained in a so called non spilling cup or handheld container and does not prevent spilling of fluid, while in action with carbonized or hot fluids.
- The object of the invention is thus maintaining the beverage carbonized in a container that is in use, while access to the fluid is easy and spilling is prevented during motion, under all positions of the container. The same applies for hot drinking fluids, thereby keeping the fluid inside the cup or container, while the air pressure rises due to expansion of the enclosed air.
- Drinking cups and handheld containers with leak tight top-covers, combined with drip-less spout and air vent are provided throughout the years in many shapes and forms, in order to prevent spilling of the liquid, contained therein for temporarily storage. The spout and vent are provided with valves that enable fluid to be withdrawn from the container or cup, when suction is applied to the spout. The reduction in fluid content in the container is replaced by air that flows through a second opening in the cover. This air vent holds a control valve that opens when the pressure sinks below the atmospheric outside pressure, due to the suction action at the spout. As an example; a drip less feeding/ training container of this nature has been described by Belanger in U.S. patent description 5,079,013 ; U.S. PAT. 5,542,670 by Morano; U.S. PAT. 5,186,347 by Freeman etc. For all these inventions the application was primarily made for babies and toddlers with the objective of eliminating spillage of the fluid by throwing over the cup or container and while drinking during movement. In the above patent descriptions other references are made to other inventors, all with the same or similar goals in mind of eliminating spillage of fluid.
- The thus described applications are suitable for non-carbonized fluids and cold drinks only. If carbonized fluids are applied, the pressure in the container will built-up thereby pushing the valve open and leakage and spilling is not prevented. The same applies for hot drinking fluids, whereby the air above the fluid is heated and expands, causing the pressure in the container to rise and will push out the fluid, if not held in the upright position. Spilling could be prevented, however, by using a stronger resilient valve material in the case of Morano U.S. PAT. 5,542,670 or a stronger spring in the case of Belanger, U.S. PAT. 5,079,013. The draw back, however, is that suction to the spout has to increase appreciably, even beyond human capacity and opening of the valve would be impossible or at least cumbersome.
- For beverage cans, as nowadays are commonly available to the consumer with carbonized drinking fluids, adapters are provided that clips onto the top of the can to close off the beverage can after opening and/ or make drinking easier than directly from the can. Such features are provide for in the following descriptions: U.S. PAT. 4,796,774 by Nabinger; U.S. PAT. 4,852,776 by Patton; U.S. PAT. 4,883,192 by Krugman; U.S. PAT. 5,071,042 by Esposito, U.S. PAT. 5,947,324 by Palinchak, EP 0870 685 A1 by Igor etc. These applications have the disadvantage that the pressure is immediately released from the can after opening and in the shortest possible time the carbon dioxide is released from the fluid and becomes flat and much less attractive to drink.
- This means that all previous described applications are not suitable for carbonized beverages or hot drinking fluids.
- The present invention overcome all these problems as well as for beverage cans, bottles as for closed non-spilling drinking cups combining a number of advantages over prior art solutions, in the same application being: Maintaining the gas pressure to keep the fluid carbonized; easy transport of partially filled containers and no fluid is spilled while drinking and used in action. For the beverage can the present invention has an additional advantage of being more hygienic than using a beverage can closure and/or drinking adapter as provided for in e.g. U.S. PAT. 4,883,192 of Krugman and other inventions thereafter.
- The present invention presents two main embodiments mainly defined in
claims - By so described, the flow element closes off the inside of the handheld container from the outside under all circumstances and position of the container when not in use for drinking.
- The following accompanying drawings of four preferred embodiments will clarify all features of the present invention to those skilled in the art of reading the drawings and accompanying specification.
- FIG. 1 is a perspective view of an assembled beverage can, that embodies one of the preferred embodiments of the present invention. Further details of this embodiment are shown in FIG. 3, 4 and 5
- FIG. 2 is a perspective view of an assembled non-spilling drinking cup or container of a second embodiment of the invention of which further details are shown in FIG. 6
- FIG. 3 is a partial cross-sectional view and a top view of the first preferred embodiment showing all parts required for the flow control element of the invention
- FIG. 4 shows a cross-section of an enlarged part of FIG. 3, for better view of the assembly of the flow control element
- FIG. 5-a) through 5-e) shows cross-sections of the individual parts that make-up the flow control element of the invention
- FIG. 6 shows a partial cross-section with top view of a non-spilling drinking cup of the second embodiment of the invention of which FIG. 2 shows a perspective view.
- FIG. 7 shows a cross-section of a third embodiment of the invention, whereby the valve is pushed open, when a suction pressure is applied to the spout, rather than that the valve is drawn from its seat in the first two embodiments.
- FIG. 8 shows a cross-section of a fourth embodiment of the invention, which is similar to the third embodiment of FIG. 7 except that the extruded portion of the membrane encompasses also the spout.
- With reference to the drawings, the invention will be described for application with a beverage can(teen), commonly available for consumption of carbonized beverages, however, with a modified top cover, adjusted for accommodation of the "flow control element" or "Spout assembly" subject of the present invention. The invention, as described in the embodiments below is for clarification only, without trying to restrict the application of the invention to these embodiments.
- FIG. 1 shows a partially opened-up, outside perspective view of a beverage can with a centrally located flow control element in the top cover, extending from the outside to the inside of the can, of the first preferred embodiment. Details of this embodiment are shown in a partially cross-sectional drawing of FIG. 3, while FIG. 4 shows an enlarged cross section of the flow control element, for clarification. The beverage can, enclosed by a
cylindrical wall 1, abottom 2, atop cover 3 and aflow control element 4 holds a carbonizedbeverage 5 that remains under a gas pressure (P3) 6 by the carbonization process. This gas pressure can be substantially higher than the outside atmospheric pressure (P1) to keep the beverage carbonized for the pleasure of drinking the fluid. Theflow control element 4 maintains this gas pressure as long as needed, while access to the fluid in the can remains possible. This is accomplished by ahousing 9 that fits tightly into theupper cover 3 of the beverage can and forms part of the barrier between the inside and outside of the can. Aspout 7 is gas tight connected to this housing and keeps a centrally perforatedmembrane 8 in place, that fits on the suction side gas tight into thehousing 9, while on the other side an atmospheric pressure is maintained. Above and below the membrane, adequate space is available to allow the membrane to move a few millimeters up and down at the center area, while fixed at the periphery. Themembrane 8 is integrally connected to avalve stem 10, while the valve stem is hollow in nature for allowing the fluid to pass through, while also the membrane has a central hole at which location the valve stem is gas tight connected to the membrane. The valve stem 10 fits into the lowercylindrical part 14, acting as a valve stem guide, forming an integral part withhousing 9, providing little clearance between these parts. This clearance is slide fit, allowing movement of the valve stem on one side but being tight enough, not to allow fluid or gas to pas through. The lower part of thevalve stem guide 14 holds also thevalve seat 13. On the lower side of the valve stem, avalve 11 of resilient material, is held in place that closes off the access opening 12 to thevalve seat 13, to the inside of the beverage can. In order to enable emptying the can completely, a flexible tube (straw) 15 is used, that is tightly fixed to thevalve opening 12 and reaches down to the bottom of the can. The valve is closed by an urging member which can be aspring 16 on the suction side of the flow control element, that pushes themembrane 8 and therewith thevalve 11 to its rest position. The hollow valve stem is narrowed down in thelower part 17, while in this tapered section one ormore holes 18 are made, through which the fluid passes when thevalve 11 is lifted from itsseat 13. Asmall air passage 19 is provided in thehousing 9 to assure that the backpressure on the lower side of the membrane remains atmospheric (P1). - The
flow control element 4 is thus activated: Suction by mouth to thespout 7 will move themembrane 8 upwards, thereby lifting the valve from its seat against the spring pressure. The magnitude of the force to activate the valve can be determined from the pressure difference over the membrane times the active surface area of the membrane plus the pressure difference over the valve times the active surface area of the valve minus the urging force (F) of the spring, which is (P1-P2) * A + (P3-P2) * a - F. Herein is "A" the active surface area of the membrane; being ¼.π.D2 in which "π" (pi) is 3.14 and "D" is the active membrane diameter and "a" is the active surface area of the valve being ¼.π.d2 in which "π" (pi) is 3.14 and "d" is the active valve diameter. "F" is the urging force of the spring in combination with the resilient force of the membrane. When the valve is lifted from its seat, the fluid in the can will be forced outwards by the pressure difference (P3 - P2), which is respectively the gas pressure in the can and the suction pressure in the spout. When suction is applied, the fluid flows through theflexible tube 15 tonozzle 12, passes thevalve 11, through the hole(s) 18 into the hollow valve stem 10 to the upper side of themembrane 8 into thespout 7, to the mouth. As soon as the suction action stops, the pressure difference (P1-P2) ceases, leaving only the urging force "F" of the closing member (spring) 16 and the resilient force in the membrane left, which will push thevalve 11 back to itsseat 13 and thus closes off the fluid passage. - Under certain circumstances it is possible that by emptying the can, the internal pressure P3 is substantially reduced and even becomes less than the atmospheric outside pressure P1. In that case the suction pressure will be able to open the valve, but is not sufficient to empty the beverage can completely. For this situation a
vent 20 is provided, which consists of one or more holes in the upper part of thevalve stem guide 14. These vents are normally closed off by arubber band 21 of adequate width to cover the holes completely and which will act as a valve, allowing air to pass from theair passage 19 into the area under the membrane, along the upper portion of the valve stem guide through the vent holes 20 into the can. This feature will take care that the inside pressure P3 of the can will never drop substantially below atmospheric outside pressure P1. The upper portion of thevalve stem guide 14 is therefore slightly enlarged to allow air to pass-by. For the application of the flow control element for beverage cans as described above, ahygienic cap 21 is provided that tightly fits onto the shoulder ofhousing 9 to keep the spout from getting dirty during transport and when not in use. - In FIG 5-a) through 5-e) the individual parts are drawn that makes up the flow control element as described of the first preferred embodiment. This embodiment, however, is not meant to limit the invention to other configurations, whereby the same principle of force enlargement is applied by using a perforated membrane that activates a valve.
- In FIG 2 and 6 second preferred embodiment is shown in applying a flow control element to a non-spilling drinking cup, whereby the top cover is tightly screwed onto the cup or container. In this case the housing 9' of the flow control element 4' is an integral and leak tight element of the top cover, whereby the cup can be filled with carbonized beverages, hot and cold drinks without spilling after closure. In the case of hot drinks, the air above the fluid will expand, building up pressure in the cup or handheld container. For this application a perspective view of a partly opened cup or container is shown in FIG. 2, while a partial cross-section of the same embodiment is shown in FIG. 6. As the principle of operation of the
flow control element 4 for this application, is exactly the same as described for the first preferred embodiment, this part will not be repeated and only the changes will be described. - FIG. 6 applies to a metal or
plastic container 22, with a removabletop cover 23 that is screwed onto thecontainer 22 and having a gas tight seal ofresilient material 24, preventing the container from leaking when filled with a beverage, hot or cold drink. In this second embodiment, the housing 9' of the flow control element 4' is now integrally molded with thetop cover 23, thereby differing slightly from the flow control element of the beverage can. Thespout 25 is removable to provide access to the inside of the flow control element for cleaning purposes. The remaining parts are substantially the same as used for the (aluminum) beverage can of FIG 1, 3,4 and 5. - In FIG. 7 a third embodiment of the
flow control element 4" is shown, which can be applied to beverage cans, bottles or drinking cups. The prime difference with the previous described embodiments of the invention is that the valve is pushed open by the suction pressure, rather than that the valve is drawn from its seat. The third embodiment comprises the following parts: A centrally perforatedmembrane 8" having an extrudedseal tube 40" and aseal structure 26" that fits gas tight but moveable in axial direction in acylindrical tube 27", that forms part of thespout 7".Spout 7" holds themembrane 8" in place and forms at the rim a gas tight connection with avalve housing 9" having aseal 30". The flow control element assembly is fixed to the top of a beverage can, bottle ordrinking cup 1" with ascrew cap connection 31". Thevalve holder 14", which is an integral part of the valve housing, holds avalve seat 13" with avalve 11" forming a hermetically sealed barrier of the inside of thebeverage holder 1" with the outside, letting no fluid to pass, when not in use. Thevalve 11" is connected through thevalve stem 10" with themembrane 8" by avalve stem holder 17", which is large enough to cover the central opening of the membrane and can even be part thereof, but at the same time allows fluid to pass. Thevalve stem holder 17" on which an urging force orspring 32" acts, holds thevalve 11" gas tight to itsseat 13" when no suction is applied to thespout 7", but allows fluid to pass when set in operation during suction. An open-air passage 29" is provided in a part of the spout, thereby assuring that space above the membrane is kept at atmospheric pressure. Aspring 32" can be added helping to keep the valve in its closed position, if the spring action of the membrane prove to be inadequate. The working of this embodiment of the invention is as follows: When suction is applied to thespout 7", the pressure P2 inspace 28" will reduce relative to outside pressure P1 above the membrane. This causes themembrane 8" to move downwards, thereby pushing thevalve 11" from itsseat 13" and opening a fluid flow path from the inside of the beverage container to the mouth. Incase the pressure within the container drops below the atmospheric outside pressure, by sucking the beverage from the container, thevalve 11" may open up against the spring-loaded membrane pressure, after the suction has seized. - The thus described embodiment requires a gas tight
moveable connection 26" of the extrudedseal tube 40" of the membrane with thecylindrical tube 27" within thespout 7". Air leakage at this location could cause the flow control element to malfunction. A solution would be to place a bellows between the membrane and spout or a so-called O-ring, but this might prove to be cumbersome. It is therefore thinkable that thespout 7" may be omitted all together, leaving the extrudedseal tube 40"of themembrane 8" as a spout, thereby simplifying this embodiment of the invention considerably. This fourth embodiment is shown in FIG. 8 comprising the same parts as shown in FIG. 7 except for thespout 7". Also the working is the same and needs no further explanation.
Claims (12)
- A flow control element (4) for emptying a fluid under pressure, from a container, which flow control element comprises:a) a spout (7), that connects to a housing (9) which holds a membrane device (38) and a valve (11);b) said housing comprises a valve stem guide (14) ending in a valve seat (13), closed by said valve;c) said membrane device comprising (i) a membrane (8) with a central opening and (ii) a hollow valve-stem (10), which has an opening (18) in the lower part thereof;d) said membrane device has a fixed seal (39) at the rim of the membrane and a sliding seal structure (40) at the center, between the hollow valve-stem and the lower part (17) of said valve stem guide;e) said housing having an air-passage (19) in the upper part thereof, that connects the space below the membrane to the outside, keeping the lower side of the membrane that faces the interior of the container, at atmospheric pressure;f) said valve stem guide has an enlarged inside diameter (41) in the upper part thereof, provided with vents holes (20) for air to pass from the space below the membrane to the inside of the container (6);g) said vent holes are blocked off by a closing member (21), in order to close the vent holes when the gas pressure (P3) inside the container, is higher than the atmospheric outside pressure (P1) and opens the vent holes when, by fluid displacement from the container, the gas pressure may drop below atmospheric outside pressure;h) said membrane device is urged towards the inside of the container by an urging member (16) in order to keep the valve closed, when the valve is in its rest position;i) said membrane device flexing away from the interior of the container against the urging force applied by the urging member, when suction is applied to the spout, thereby opening the valve for fluid to pass.
- A flow control element (4") for emptying a fluid under pressure from a container, which flow control element comprises:a) a spout (7") with a cylindrical tube (27"), a membrane device (38"), a valve housing (9") and a valve assembly (41 ");b) said membrane device comprising (i) a membrane (8") with a central opening and (ii) a seal tube (40") having a flexible seal structure (26") with the cylindrical tube (27") of the spout;c) in said flow control element, an air passage (29") is provided, promoting retention of atmospheric pressure between the spout and a side of the membrane that faces away from the interior of the container;d) said valve housing comprises a valve holder (14") with a valve seat (13") holding said valve assembly;e) said valve assembly comprising a valve stem (10"), a valve (11") fixed to the valve stem and a perforated valve stem holder (17");f) said valve is resiliently urged against the valve seat by an urging member (32"), which is held in place by the perforated valve stem holder on one side, and by a horizontal part of the valve seat on the other side;g) said membrane device is leak tight fixed at its periphery (30") of said membrane, but flexes at its center, towards the interior of the container, when suction is applied to the spout, thereby forcing the valve away from the valve seat in opposition to the urging force applied by the urging member.
- The flow control element of claim 1, wherein said closing member comprises an elastic band.
- The flow control element of claim 1 or 2, wherein the membrane has an undulating shape in cross section and is of a resilient material.
- The flow control element of claim 1 or 2, wherein the urging member comprises a spring.
- The flow control element of claim 1 or 2, wherein the urging member comprises the resilient force of the membrane.
- The flow control element of claim 1 or 2, wherein the surface area of the membrane on which the suction pressure acts, is substantially larger than the surface area of the valve on which the inside gas pressure of the container acts.
- The flow control element of claim 2, wherein the seal structure comprises a bellows between the cylindrical tube of the spout and the seal tube of the membrane.
- A combination, comprising:a container that can hold a fluid, having an opening at the top and the flow control element of claim 1 or 2, attached to the container and covering the opening.
- The combination of claim 9, wherein the container is made of metal or plastic material that can hold a fluid under gas pressure or at elevated temperature.
- The combination of claim 9, wherein the fluid is a beverage, hot drink or any other drinking fluid.
- The combination of claim 9, wherein the flow control element is removably attached to the container by a screw thread connection.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US585660 | 2000-06-01 | ||
US09/585,660 US6290090B1 (en) | 2000-06-01 | 2000-06-01 | Drip-less carbonated beverage container “flow control element” with suction spout |
NL1015684 | 2000-07-12 | ||
NL1015684A NL1015684C1 (en) | 2000-07-12 | 2000-07-12 | Fluid cut-off device has mouthpiece for drinks containing carbonic acid, such as for lemonade cans and bottles, fluid in container being under pressure from carbonic acid process |
PCT/EP2001/005108 WO2001092133A2 (en) | 2000-06-01 | 2001-05-04 | Carbonated beverage container with suction spout |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1286900A2 EP1286900A2 (en) | 2003-03-05 |
EP1286900B1 true EP1286900B1 (en) | 2007-02-14 |
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ID=26643200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01938176A Expired - Lifetime EP1286900B1 (en) | 2000-06-01 | 2001-05-04 | Carbonated beverage container with suction spout |
Country Status (11)
Country | Link |
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EP (1) | EP1286900B1 (en) |
JP (1) | JP2003534995A (en) |
KR (1) | KR100786962B1 (en) |
CN (1) | CN1166541C (en) |
AT (1) | ATE353835T1 (en) |
AU (1) | AU772871B2 (en) |
CA (1) | CA2409943C (en) |
DE (1) | DE60126605T2 (en) |
ES (1) | ES2280376T3 (en) |
MX (1) | MXPA02011943A (en) |
WO (1) | WO2001092133A2 (en) |
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-
2001
- 2001-05-04 JP JP2001588115A patent/JP2003534995A/en active Pending
- 2001-05-04 EP EP01938176A patent/EP1286900B1/en not_active Expired - Lifetime
- 2001-05-04 AU AU63902/01A patent/AU772871B2/en not_active Ceased
- 2001-05-04 DE DE60126605T patent/DE60126605T2/en not_active Expired - Lifetime
- 2001-05-04 KR KR1020027016248A patent/KR100786962B1/en not_active IP Right Cessation
- 2001-05-04 CA CA002409943A patent/CA2409943C/en not_active Expired - Fee Related
- 2001-05-04 CN CNB018035647A patent/CN1166541C/en not_active Expired - Fee Related
- 2001-05-04 ES ES01938176T patent/ES2280376T3/en not_active Expired - Lifetime
- 2001-05-04 MX MXPA02011943A patent/MXPA02011943A/en active IP Right Grant
- 2001-05-04 WO PCT/EP2001/005108 patent/WO2001092133A2/en active IP Right Grant
- 2001-05-04 AT AT01938176T patent/ATE353835T1/en active
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MXPA02011943A (en) | 2004-09-06 |
ES2280376T3 (en) | 2007-09-16 |
ATE353835T1 (en) | 2007-03-15 |
CN1394186A (en) | 2003-01-29 |
EP1286900A2 (en) | 2003-03-05 |
DE60126605T2 (en) | 2007-08-30 |
KR20030015257A (en) | 2003-02-20 |
WO2001092133A3 (en) | 2002-04-11 |
CA2409943C (en) | 2008-04-22 |
WO2001092133A2 (en) | 2001-12-06 |
DE60126605D1 (en) | 2007-03-29 |
KR100786962B1 (en) | 2007-12-17 |
AU6390201A (en) | 2001-12-11 |
CN1166541C (en) | 2004-09-15 |
AU772871B2 (en) | 2004-05-13 |
CA2409943A1 (en) | 2001-12-06 |
JP2003534995A (en) | 2003-11-25 |
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