Hydration system
A personal hydration system is provided including a pre-filled reservoir pouch. The pouch may be filled with a drink fluid by a supplier, heated, and aseptically sealed. The pouch may also be cold-filled with a drink fluid and preservatives and then sealed. The pouch is preferably designed as a disposable single-use item. In order to keep the pouch contents fresh and to facilitate delivery of the fluid from the reservoir through a drink tube, the pouch includes a unique tube connector structure. A first connector portion is mounted to a wall of the pouch. The first connector portion includes a closure member that keeps fluid sealed in the bladder. A second connector portion is matable with the first connector portion and includes a structure that operates to move the closure member to an open position when mated with the first connector portion. The second connector portion is shaped to fit with a conventional flexible drinking tube.
This patent application claims the benefit of U.S. Provisional Patent Application No. 60/615,859, filed Oct. 4, 2004.
FIELD OF THE INVENTIONThis invention pertains to systems for providing drinking fluids to a user and particularly to a personal hydration system including a reservoir pouch and a drinking tube.
BACKGROUND OF THE INVENTIONHydration systems are generally known. A common drinking system includes a flexible reservoir pouch having a selectively openable fill port to permit the reservoir to be filled with a drink, such as water, sports drink, etc. Additionally, the common drinking system includes a fitting mounted to the pouch that connects to a length of flexible tubing. The tubing may be directed to the mouth of a user to deliver a drink, when desired. As is generally known, the reservoir is commonly carried in a backpack or carrier.
Furthermore, current hydration systems require the user to fill the pouch prior to use. This step is inconvenient and time consuming. Additionally, sanitary problems exist with conventional hydration systems that are constructed to be reusable. For example, the interiors of conventional hydration systems tend to mildew unless the pouch and tube are washed out and permitted to dry between uses. Particularly, the reservoir pouch must be cleaned through the fill-port, then propped open to be aired out. This is tedious task is often skipped because it is inconvenient. Unfortunately, the resulting unsanitary conditions may cause a user to become sick, and moreover, the system is often discarded at this point. Conventional reservoirs are constructed with features to facilitate repeated use (e.g., fill port, heavy bladder wall construction, etc.), and such features are expensive to manufacture. Accordingly, to discard conventional hydration systems is wasteful and uneconomical.
A need exists for an improved personal hydration system that avoids the inconvenience, expense, and waste associated with current systems.
SUMMARY OF THE INVENTIONIn an embodiment according to the present invention, an improved reservoir pouch for a personal hydration system is provided. The pouch is preferably provided in pre-filled condition to a user and is designed as a disposable single-use item. In order to keep the pouch contents fresh and to facilitate delivery of the fluid from the reservoir through a drink tube, a unique tube connector structure is provided. A first connector portion is mounted to a wall of the pouch. The first connector portion includes a closure that keeps fluid contents in the pouch. A second connector portion is matable with the first connector portion and includes a structure that operates to move the closure to an open position in the mated condition, permitting fluid to exit through a passage in the second connector portion. The second connector portion is shaped to fit with a first end of a conventional, flexible drinking tube. A second end of the tube can be placed in the user's mouth in a conventional manner.
The connector may be provided in various alternative embodiments. For example, the closure may be a membrane, such as a wall of the bladder, and the membrane can be pierced by one of the connector members to permit fluid communication through the drinking tube. In another example, the closure is a seal layer adapted to be peelable away from the first connector member, wherein the first and second connector portions can then be threaded together to permit fluid communication from the interior of the bladder through the drinking tube.
In an embodiment, a method of making a pre-filled reservoir pouch is provided. The pouch is filled with a beverage under sterile and aseptic conditions then sealed. This advantageously permits storage for a significant periods in a consumable state. The user can open the closure and utilize the first and second connector portions to consume fluid from the pouch through a flexible drinking tube. The beverage may be heated to destroy bacteria.
In an embodiment, an advantage of the present invention is that it provides a single-use reservoir pouch for a hydration system, wherein the pouch can be discarded after use.
In an embodiment, another advantage of the present invention is that it provides a reservoir pouch that may be supplied to consumers in a ready-to-consume condition, wherein the pouch is pre-filled with a particular beverage. A related advantage is that the present invention provides a pouch and method for making a pouch in which the contents are sealed in an aseptic condition until consumption is desired.
These and other advantages of the invention will be apparent from the description of the invention provided herein.
BRIEF DESCRIPTION OF THE DRAWINGS
Now referring to the drawings,
According to a teaching of the invention, the pouch is pre-filled and sealed in aseptic conditions to contain a beverage fluid, such as water, juice, sports drink, etc, for shipping and later consumption. The pouch of the present invention has a dispensing outlet connector system that facilitates sealing during an aseptic pre-filling process and then convenient opening at a later time by a user for consumption through a standard flexible drink tube. Also, the bladder preferably has a shape and dimensions suitable to fit in a backpack or carry-pack for use during activities, such as during cycling, running, hiking, or combat.
Additionally, in an embodiment, the pouch is disposable after the beverage has been consumed. According to an aspect of the invention, the drink pouch is preferably constructed of relatively inexpensive materials, without features such as a reusable fill port, and preferably having a dispensing outlet connector designed to discourage refilling and re-use, so that the drink pouch can be produced economically, using a minimum of materials, and be considered disposable. Advantageously, the pouch connector system is configured so that a user can consume the beverage contents through a standard drinking tube of a type that is commonly available.
Referring to
Now turning to
The first connector portion 14 defines a duct 30 to provide fluid communication from the interior 24 and a closure 32 that is capable of preventing communication through the duct 30. The closure 32 is shaped as a cap which can snap-fit to an interior end of the duct 28, as shown in
Also illustrated in
More particularly in the illustrated embodiment, the second connector portion 18 is configured to mate with the first connector portion 14 and moves the closure member 32 to an open position, thereby permitting fluid flow through the mated connectors. More particularly, the second connector portion 18 includes an elongate body 36 shaped to be inserted into the duct 30 of the first connector portion 14. In an embodiment, the first and second connector portions are configured so that movement to mate the second connector portion with the first connector portion causes the closure to move from the closed position to the open position. For example, referring to
Referring to
Thus, the closure 32 of the first connector portion 14 is provided initially in a closed position shown in
In the fully mated condition shown in
In an embodiment, the second connector portion 18 is provided together with the filled pouch so that the second connector portion is readily available to a user. For example, the second connector portion 18 can be removably secured (in an unmated condition) to a side of the first connector portion 14 by a breakable, co-molded tab. The user can remove the second connector portion 18, fit a standard drink tube 20 to the second connector portion, mate the first and second connector portions, and then consume the drink. The second portion 18 may also be removably secured to other structure of the pouch by other means, such as tape or an adhesive, or provided separately. The second connector portion 18 may additionally be provided in a separate plastic package in order to maintain sterile conditions until use, in which case the separate package may be secured to the pouch by tape, an adhesive or another suitable means.
Various connector configurations are possible, as will be recognized by those skilled in the art. For example, FIGS. 4A-B illustrate a pouch 110 having a flexible bladder 112 and a first connector portion 114 wherein a closure is provided by a breakable membrane, or more particularly in the specific example illustrated, wherein the closure is a wall of the bladder. The first connector portion 114 is mounted within an interior of the bladder 112 and may be secured against the bladder wall. A second connector member 118 is provided which has an elongate body 136 adapted with a distal pointed tip 140 configured to pierce the bladder wall 112 when the second connector member 118 is mated with the first connector member 114, as shown in
Another pouch 210 is illustrated in FIGS. 5A-B. The pouch 210 includes a flexible bladder 212 and has a first connector portion 214 secured around an opening in a wall of the bladder. As illustrated in FIGS. 5A-B, the first connector portion 214 has a closure 232 constructed as a membrane secured across a duct 230 that extends from an interior of the pouch through the first connector member.
For convenience and to avoid unsanitary conditions, the pouch 10, 110, 210 is preferably disposable, and accordingly, in a preferred embodiment, the pouch is constructed with minimal features to reduce materials, cost, and waste. For example, the pouch is preferably constructed without a refill port and associated removable cap of the type provided on conventional hydration systems. Moreover, the bladder is made of a flexible, durable material, however in a preferred embodiment, the bladder wall is constructed of lighter weight materials than bladders of known hydration systems intended for reuse. For example, a suitable bladder can be constructed of any of various thermoplastics, such as polyethylene, as will be recognized by one skilled in the art. In a specific example, a suitable bladder may include walls constructed of dual polyethylene layers bonded on opposite sides of a nylon layer. It has been found that DURASHIELD 34 and FLEXITECH 15 serve as suitable materials.
According to an aspect of the invention, the pouch is filled according to a sterile and aseptic packaging process, and the pouch is constructed to be aseptically sealed and to maintain the contents in an aseptic, sterile condition for a suitable time for shipping and storage until consumption. For example, in an aseptic filling process, the beverage product is heated to a high temperature in a closed atmosphere, and the product is cooled such as by flowing the product through hot pipes and then through cold pipes. The pouches are sterilized by irradiation or some other appropriate means. The sterile container is filled with the sterile beverage and then sealed. Notably, where the beverage is water, water can be treated through a reverse osmosis system to remove impurities and then filled into the pouch and sealed in a closed atmosphere, avoiding a need for heat treatment of the beverage and yielding an aseptically sealed pouch. Additionally, in an alternate method, the beverage may be treated with a preservative, such as an appropriate amount of sodium benzoate or potassium sorbate, and sealed in the pouch, in which case a heat treating step could be avoided.
As used herein, forms of the terms “aseptic” and “sterile,” and the associated processes and structures, are used in a manner consistent with commercially acceptable standards defined by the FDA. In Title 21 CFR 113.3, the FDA provides the following definitions: “Aseptic processing and packaging means the filling of a commercially sterilized cooled product into presterilized containers, followed by aseptic hermetical sealing, with a presterilized closure, in an atmosphere free of microorganisms.” 21 CFR 11.3.3 (a) (emphasis in original) This regulation further states, “Commercial sterility: (1)°‘Commercial sterility’ of thermally processed food means the condition achieved—i) By the application of heat which renders the food free of—a) Microorganisms capable of reproducing in the food under normal nonrefrigerated conditions of storage and distribution; and (b) Viable microorganisms (including spores) of public health significance; or (ii) By the control of water activity and the application of heat, which renders the food free of microorganisms capable of reproducing in the food under normal nonrefrigerated conditions of storage and distribution.” 21 CFR 113.3 (e) (emphasis in original).
In an embodiment, the pouch is constructed to enable the sealed contents to be frozen. This advantageously enables the user to consume the contents at a chilled temperature as the beverage melts over a period of time. In order to facilitate expansion that occurs during freezing of the beverage contents without rupturing the pouch, the beverage, in a liquid form, is packaged and sealed in the pouch in amount suitably less than the maximum liquid capacity. For example, the pouch may be filled with beverage in its liquid state to approximately 80% to approximately 90% of the maximum liquid capacity of the pouch. Additionally, it is preferred to construct the bladder and connector of materials suitable to maintain their integrity when the contents are frozen. As used herein, terms “fill” and “filling” do not require filling to maximum capacity.
In order to facilitate protected shipping and convenient storage and use, an aspect of the invention includes a holder. For example, as shown in
The pouch holder 72 may include a divider structure configured to define a plurality of cavities in a generally vertical orientation, and holding a plurality of pouches 10 in the respective cavities, wherein the first connector portion is proximate to a top end of the pouch holder 72. As shown in
Preferred embodiments of this invention are described herein, including the best mode known to the inventors for carrying out the invention. It should be understood that the illustrated embodiments are exemplary only, and should not be taken as limiting the scope of the invention.
Claims
1. A reservoir pouch for a personal hydration system, the pouch comprising:
- a flexible bladder having at least one wall defining an interior cavity, the wall having an opening;
- a first connector portion mounted to the wall peripherally to the opening and defining an outlet from the interior cavity, the first connector portion including a duct having a closure that can be moved from a closed position such that the closure prevents fluid from flowing from the interior into the duct to an open position such that the closure permits fluid to flow from the interior through the duct; and
- a second connector portion that is configured to mate with the first connector portion, the second connector portion having an end that is shaped to connect to a drink tube and an opposite end that is configured to be received in the duct of the first connector member in a mated condition and move the closure to an open position to permit fluid to flow from the interior cavity through the first and second connector portions.
2. The pouch of claim 1, further comprising a peelable layer mounted to a proximal end of the first connector portion to cover the duct.
3. The pouch of claim 1, wherein the second connector portion is shaped to connect to an end of an elongate, flexible drinking tube.
4. The pouch of claim 1, wherein the pouch further includes the second connector portion, wherein the second connector portion is removably secured in an unmated relation to the first connector portion.
5. The pouch of claim 3, wherein the second connector portion is secured to the first connector portion by a breakable tab.
6. The pouch of claim 1, wherein the closure includes a cap that secures in a snap-fit manner over the duct in the closed position and which is removed to the open position when pushed toward the interior of the bladder.
7. The pouch of claim 6, wherein the closure further includes at least one resilient leg having one end mounted to the cap and another end fixed relative to the duct to tether the cap when in the open position.
8. The pouch of claim 1, wherein connector includes an outer wall that generally surrounds the duct and a floor that extends between the duct and the outer wall.
9. The pouch of claim 1, wherein the closure is non-recloseable.
10. The pouch of claim 1, wherein the wall of the bladder includes multiple layers.
11. The pouch of claim 10, wherein the wall includes an exterior layer made of a laminate film.
12. The pouch of claim 10, wherein the wall includes an interior layer made of polyethylene.
13. The pouch of claim 1, wherein the pouch contains a beverage.
14. The pouch of claim 1, wherein the pouch does not contain a refill port.
15. The pouch of claim 1, including a locking mechanism to secure the first connector portion and second connector portion in the mated condition.
16. The pouch of claim 12, wherein the locking mechanism includes ramped portions on one of the connector portions and corresponding detents on the other connector portion, wherein the ramped portions engage the corresponding detents in the mated condition.
17. A reservoir pouch for a personal hydration system, the pouch comprising:
- a bladder having at least one wall defining an interior cavity, the wall having an opening;
- an outlet fitting disposed within the opening in the wall, wherein the outlet fitting is adapted to be coupled to an end of an elongate flexible drinking tube, and wherein the outlet fitting can be selectively deployed from a closed an aseptically sealed state to an open state; and
- a liquid beverage aseptically sealed within the interior cavity.
18. The pouch of claim 17, wherein the outlet fitting comprises:
- a first connector portion mounted to the wall peripherally to the opening and defining an outlet from the interior cavity, the first connector portion including a receptacle duct having a closure that can be moved from a closed position such that the closure prevents fluid from flowing from the interior into the duct to an open position such that the closure permits fluid to flow from the interior through the duct; and
- a second connector portion that is configured to mate with the first connector portion, the second connector portion having an end that is shaped to connect to an elongate, flexible drink tube and an opposite end that is configured to be received in the duct of the first connector member in a mated condition and move the closure to an open position to permit fluid to flow from the interior cavity through the first and second connector portions.
19. The pouch of claim 17, further comprising a peelable layer mounted to cover a proximal end of the outlet fitting.
20. The pouch of claim 17, wherein the receptacle duct is non-reclosable after the second connector portion has been mated to the first connector portion.
21. The pouch of claim 17, wherein the wall of the bladder has multiple layers including at least an interior layer and an exterior layer.
22. The pouch of claim 21, wherein the exterior layer is comprised of a laminate film.
23. The pouch of claim 21, wherein the interior wall is comprised of polyethylene.
24. The pouch of claim 17, wherein the pouch is non-resealable after the outlet fitting is in an open state.
25. The pouch of claim 17, wherein the pouch does not contain a refill port.
26. The pouch of claim 17, wherein the outlet fitting comprises:
- a first connector portion mounted to the wall peripherally to the opening and defining an outlet from the interior cavity, the first connector portion including a duct having a sealed closure membrane that prevents fluid from exiting through the duct; and
- a second connector portion that is configured to mate with the first connector portion, the second connector portion having an end shaped to connect to and provide fluid communication to an elongate, flexible drink tube and an opposite end that is configured to be secured to the first connector member in a mated condition;
- wherein the membrane is openable to permit fluid to flow from the interior cavity through the first and second connector portions.
27. The pouch of claim 26, wherein the first and second connector portions include respective threads to mate in a threaded relation.
28. The pouch of claim 26, wherein the membrane is openable by being peelable away from the first connector portion.
28. The pouch of claim 26, wherein the membrane is openable by piercing.
29. The pouch of claim 28, wherein the second connector portion is configured to pierce the membrane.
30. A method of making a pre-filled reservoir pouch for a personal hydration system, the method comprising the steps of:
- providing a bladder having at least one wall with an opening therethrough;
- mounting an outlet fitting to the wall peripherally around the opening, the outlet fitting having a closed state in which the outlet fitting prevents fluid from exiting the bladder and an open state in which fluid can exit the bladder, and wherein the outlet fitting is capable of being coupled to an end of an elongate, flexible drink tube;
- filling the interior of the bladder with a drink fluid in a sterile condition; and
- sealing the bladder.
31. The method of claim 30, wherein the step of mounting an outlet fitting to the wall comprises:
- mounting a first connector portion to the wall peripherally around the opening, the first connector portion defining an outlet from the bladder, the first connector having a closure member movable between a closed position in which the closure prevents fluid from exiting the bladder and an open position in which fluid can exit the bladder; and
- providing a second connector portion that is configured to matably connect to the first connector portion in a manner whereby the second connector portion opens the closure member when mated with the first connector portion, and whereby the second connector portion is connectable to an end of an elongate, flexible drink tube.
32. The method of claim 30, further comprising the step of securing a seal membrane to the outlet fitting peripherally to the outlet to protect the outlet fitting.
33. The method of claim 30, further comprising the step of heating the drink fluid.
34. The method of claim 33, whereby the heating brings the drink fluid to about 180-250° F.
35. The method of claim 33, whereby the heating occurs prior to the filling step.
36. The method of claim 33, whereby the heating occurs after the filling step.
37. The method of claim 33, further comprising the step of heating the drink fluid after the securing step.
38. The method of claim 30, further comprising the step of irradiating the bladder.
39. The method of claim 38, whereby the irradiating occurs before the filling step.
40. The method of claim 30, further comprising adding a preservative to the drink fluid.
41. The method of claim 40, wherein the preservative is sodium benzoate.
42. The method of claim 40, wherein the preservative is potassium sorbate.
43. The method of claim 30, further comprising the step of providing a holder for holding a plurality of the pouches during shipping and storage, the holder including a divider structure configured to define a plurality of cavities in a generally vertical orientation, and holding a plurality of pouches in the respective cavities, wherein the first connector portion is proximate to a top end of the pouch holder.
44. The method of claim 43, including the step of freezing the pouches during the holding step.
45. A method of using a personal hydration system, the method comprising the steps of:
- providing a sealed reservoir pouch, the pouch including a flexible bladder having an interior containing a beverage, a first connector portion secured to the bladder including a duct extending from the interior to an exterior of bladder and a closure preventing fluid communication through the duct, and a second connector portion that is matable with the first connector portion;
- placing the reservoir pouch in a carrier;
- fitting a flexible drinking tube to the second connector portion;
- mating the first connector portion with the second connector portion;
- opening the closure to permit communication through the duct; and
- removing the liquid from the pouch through the drinking tube.
46. The method of claim 45, further comprising the steps of removing the pouch from the carrier; and discarding the pouch.
47. The method of claim 45, further comprising the step of cooling the beverage before placing the pouch in the carrier.
48. The method of claim 47, further comprising removing the pouch from a pouch holder in which the pouch is provided, wherein the pouch holder is dimensionally constrained to maintain the shape of the pouch during the freezing step and wherein the pouch is in the pouch holder in a vertical storage position such that the first connector portion is at the top.
49. The method of claim 48, wherein the beverage is cooled to an approximately frozen condition before removing the pouch from the pouch holder.
Type: Application
Filed: Oct 4, 2005
Publication Date: Apr 6, 2006
Applicant: Leahy/IFP (Glenview, IL)
Inventors: Gregory Lojkutz (Lisle, IL), Bruce Hesbon (Naperville, IL), Todd Fujimoto (Chicago, IL)
Application Number: 11/242,990
International Classification: A47G 19/22 (20060101);