Means of providing disposable containers for beverages are long established in the art. Most such containers are rendered as single-use receptacles wherein opening of the receptacle unseals the contents. After the beverage is consumed the receptacle is thrown away or recycled.
Once opened, the beverage is exposed to atmosphere and will decarbonate and oxidize over time. Beverages therefore must be consumed in a relatively short time after opening else the beverage lose its vitality. As a result, single-serving sized containers are generally wasteful and incentivize overconsumption. An abundance of sugared and artificially sweetened beverages demanded by the market has been associated with obesity, diabetes, and other ailments plaguing the population. Moreover, such receptacles once opened are prone to spillage—since there is no available means to seal the beverage container once opened, knocking the container over subjects the contents to spillage. This is particularly problematic when drinking while traveling, as for example when flying or driving.
What is needed is a resealable beverage container that enables a user to easily open the receptacle and then reseal the container when not in use. A method of manufacture that enables retooling of existing methods of production is also desirable to incentivize cost-effective adoption of the invention.
The present invention relates to a resealable beverage container capable of resealing its contents after opening by rotational action of an upper portion disposed to orient a drink hole between a closed position and an open position, to prevent spillage and maintain carbonation of the beverage during extended use. The present invention further relates to a method of manufacture of the resealable beverage container that modifies existing production methods for addition of an upper portion to a can end.
The present invention and method of manufacture relate to a resealable beverage container having a rotatable upper portion that aligns a drink hole therein with a drink hole disposed in the container end. The container is resealable after opening. The upper portion is moveable between a closed position and an open position when rotated in a corresponding first direction and a corresponding second direction, respectively. When oriented to the open position, the drink hole in the upper portion superimposes overtop a corresponding drink hole in the container end. When oriented to the closed position, the drink hole of the upper portion engages overtop an impermeable gasket member whereby the container is sealed (and re-seals). The upper portion may be prevented from over-rotation by action of at least one detent or other obstructing member to prevent the upper portion from rotating past the open and closed positions.
It should be noted that, although the present disclosure is directed to a beverage can in particular, the principal means of exploiting the inventive step set forth herein, and the associated metes and bounds of the claims below, necessarily apply to beverage containers of any material wherein the general form of the receptacle is maintained. The method of manufacture contemplates adoption in the beverage can and canning industry as a whole and is directed to assembly of an aluminum can as seen in the current state of the art; however, where additional materials can be used to like effect without deviating from the general intent of the steps enumerated in the method as claimed, other materials are also contemplated as appropriate for, and within scope of, the method claimed.
In contemplating the present invention, some embodiments include a vent hole disposed in the container end whereby a corresponding vent hole in the upper portion enables atmospheric displacement therethrough when the upper portion is moved to the open position. The vent hole enables displacement of atmosphere into the container when decanting or drinking liquid therefrom. In like manner as described above, where included, the vent hole in the upper portion is sealed by the impermeable gasket member when the upper portion is rotated to the closed position to prevent leakage when the beverage container is closed.
The impermeable gasket member may be a single body superimposed atop the container end between the container end and the upper portion or it may comprise a plurality of such bodies disposed in requisite position to seal with such openings as are disposed in the upper portion while enabling superimposition with corresponding openings in the container end. The impermeable gasket member may be rendered of any impermeable nontoxic material, such as food grade silicone, for example, or other nontoxic polymer suited for the purpose, and it may be installed via a variety of methods, including by spraying an aerosolized polymer or other substance to gel upon the can end in requisite position for the purposes intended. In other methods, the impermeable gasket member may be premade and added in the assembly line to the drawing of the aluminum blank at an appropriate stage in the manufacturing process. In other methods, the impermeable gasket member may be additively printed to the can end.
In some modes of manufacture contemplated herein, the impermeable gasket member is added to the container end and punched to render openings therein superimposed with openings in the container end. The upper portion may also be added to the container end for punching simultaneously and set to position rotationally around the can end (see below) whereby the openings in the upper end are rotatable to superimpose over the openings in the gasket and container end when the upper portion is moved to the open position. The openings in the upper portion are thence set to reseal with the gasket member when the upper portion is returned to the closed position.
Thus, in all embodiments, the impermeable gasket member enables sealable contact with openings disposed in the upper portion to prevent leakage when the upper portion is moved to the closed position while enabling throughflow to the container interior when the upper portion is moved to the open position.
In some embodiments, over-rotation of the upper portion between the open and closed positions may be effectuated by engagement of an obstruction member (herein, “detent”) devised to delimit rotation of the upper portion by engagement within a corresponding track. In the preferred embodiment set forth and illustrated herein, the detent (or other obstruction member) is disposed upon the upper portion and travels in an arcuate track scored in the gasket member and/or the can end. The extent of the track delimits the degree of rotation; the extremities of the track corresponding to the open and closed positions respectively. It should be noted that the detent (or other obstruction member) may be disposed in other positions to like effect, such as, for example, upon the side of the upper portion and travelable thereat along a track scored in the container end, or, vice versa, on the can end whereby the track is disposed on the interior surface of the upper portion and therefore moveable around the detent.
In some embodiments, the gasket member includes a vent hole, a drink hole, and a track member. The vent hole and drink hole are positioned to superimpose atop the vent hole and the drink hole in the container end and said track member accommodates movement of a corresponding detent between the open and closed positions therein to prevent over-rotation of the upper portion. The track member may likewise be scored in the can end proper where the gasket member is not coextensive with the can end.
To incentivize adoption of the invention, the method of manufacture of the beverage container set forth herein is contemplated for standard industry manufacturing practices, as currently seen in the beverage can arts. In brief, a beverage can is typically made in the state of the art by a process known as two-piece drawing and wall ironing. An aluminum ingot is pressed into a circular sheet blank. A cup is then drawn from this blank to be approximately 3.5″ in diameter and 1.3″ in height. This cup is then extended in a second draw to approximately 2.6″ diameter and 2.25″ height and subsequently ironed to approximately 5″ height. Typically, another punch arches the base to counter the pressure of the stored liquid inside the can. However, in the present method set forth herein, this phase is omitted, thereby providing a cup with a flat base.
Ears are trimmed from the upper rim and the neck is added to the upper end. Typically, as seen in the art, a flat lid of a stiffer aluminum alloy (typically with a higher percentage of manganese) is added. After the beverage is input into the can, the lid is folded into the neck and seamed closed. However, in the instant process set forth herein, the lid is seamed without a drink hole scored or a ring pull added. In the present method, this lid serves as the base of the can (the stronger aluminum needed to counteract the pressure) and the flat base is presented as the container end whereon the upper portion is added in an additional step over the current method seen in the art.
In the present method, instead of bulging the base, the upper portion is added thereover. Openings may then be punched therethrough or, alternatively, the upper portion may be assembled in a process separately and be added to the can end with suitable openings (whether drink hole only or drink hole and other openings) previously punched.
In the present invention, the base of the cup manufactured in the present state of the art serves as the “container end” of the container as set forth herein. In a preferred embodiment, the upper portion is made of aluminum (potentially with a higher manganese content to ensure stiffness) and is sized to superimpose overtop the container end. During the drawing and ironing phase, the container end is shouldered. The upper portion engages over the shouldered portion to align with the can walls. A V-crimp is then added, engaging the upper portion into the can wall around the shoulder. Liquid is added under pressure and the can lid is added to form the base of the beverage container in the manner previously described, but without the need of a drink hole or ring pull added.
In the present method of manufacture, the impermeable gasket is installed to the can base before the upper portion is added thereover. The gasket may be premade with openings therein and, where present, with the track incorporated. Alternatively, the openings in the container end may be punched simultaneously through the gasket. Additionally, the gasket may be added to the container end by spraying or additively printing a polymer thereto at time of drawing out the cup (see above). The upper portion is then added and situated in the closed position. The detent (or other obstruction member), when present, may be added to the upper portion at time of manufacture or added in the process crimping the upper portion to the container shoulder.
Once the upper portion has been attached, and the V-crimp added, the liquid is added under pressure and the lid installed in the typical fashion by seaming into the cup open end. The pressure of the liquid forces the upper portion into taut engagement with the gasket and seals the container. The result is a sealed can containing a pressurized liquid with a rotatable upper portion that may be operated from the closed position to the open position to open and close, unseal and reseal, the beverage therein contained. No ring pull is needed. Twisting the can to the open position releases the pressure interior to the can.
Thus has been broadly outlined the more important features of the present resealable beverage container so that the detailed description thereof that follows may be better understood and in order that the present contribution to the art may be better appreciated.
Objects of the present resealable beverage container, along with various novel features that characterize the invention are particularly pointed out in the claims forming a part of this disclosure. For better understanding of the resealable beverage container, its operating advantages and specific objects attained by its uses, refer to the accompanying drawings and description.
With reference now to the drawings, and in particular
The instant Figures supplied herewith are intended to be exemplary and not limiting. Alternative means of contemplating the invention illustrated herein that do not contradict the claims should be considered within scope of this disclosure, the metes and bounds of the invention constructed from the accompanying claims. Further, the particular examples depicted in
Referring specifically now to the example embodiment shown in
As shown in
The upper portion 70 is therefore rotatable upon the container end 50 and includes knurled or milled features 72 circumferentially disposed thereupon to increase tractive engagement with the hands of a user. In this example embodiment depicted, upper portion 70 includes drink hole 80, vent hole 82, and detent member 84. As shown in
Upper portion 70 is attached to container end 50 by the V-crimp 52 crimping the upper end 70 and shoulder 22 together (see, e.g.,
Thus, in the example embodiment illustrated herein, the can 20 is manufactured in like manner as seen in the current state of the art, but in-use the can 20 is inverted—the lid is the base of the present resealable beverage container, and the base is modified (with addition of the upper portion) to serve as the container top. It should be noted that the seamed base 22, rendered and seamed in like manner as can lids in the state of the art, enables stacking, packing, and storage of the present resealable beverage container in existing capacity as applied to existing beverage cans known in the art.
In the example embodiment shown, gasket member 38 includes drink hole 40, vent hole 42, and track member 44. Drink hole 40 superimposes over drink hole 30 in the container end 50 and vent hole 42 superimposes over vent hole 32 in the container end 50. Track member 44 is disposed for engagement with detent member 84, disposed in upper portion 70, when upper portion 70 is added atop gasket member 40. Upper portion 70 is added to container end 50 in the closed position at time of manufacture, whereby drink hole 80 and vent hole 82 in upper portion 70 are disposed overtop of impermeable gasket member 38 to prevent throughflow of fluids from inside the container 10. V-crimp 52 is added once upper portion 70 has been positioned overtop of container end 50. V-crimp 52 is circumscribed into shoulder 26 of container end 50 and serves to fasten upper portion 70 in position while maintaining upper portion's rotational capacity.
Seamed base 22 is connectable to open end of the container 10 and seamed into position in like manner as is seen in the present state of the art in seaming the lid into the container neck. Neck 24 therefore enables seaming and securement of the base 22 in position to prevent detachment or expulsion from the formed container 10. No drink hole or ring pull is added to base 22, however, as would typically be the case during installation of the lid into beverage containers seen in the present state of the art.
In some embodiments, for better securement, a central pivot or pin member (not shown) may be included in upper portion 70 to further secure and attach upper portion 70 to container end 50. This pivot or pin member, or other means of securing the center of upper portion to container end and/or gasket member while enabling rotation thereabouts, may be manufactured in like manner as the pin in beverage cans currently seen in the art to anchor the lever or ring pull in place atop the can lid.
Upper portion 70 is sized to seat over the container end 50. The container 10 is still open at the other end during this process, and V-crimp 52 is pressed into the upper portion 70 and the shoulder 26 simultaneously by applying focused pressure to the outside of the can body 20 against a V-shaped receptacle blank disposed in corresponding, opposing position upon the interior side of the body 20. The V-crimp 52 is circumscribed around the shoulder 26, molding upper portion 70 to the shoulder 26 in close relation (as shown in
The process illustrated by