ONE-PIECE SPLASH AND SPILL RESISTANT LID
A one-piece disposable cup lid enables drinking while inhibiting splashing and spilling by blocking straight-line paths through the lid and dispensing beverage through a well. A drinking spout can include a well having a sidewall, a bottom and a penetration into the cup, or a sloping lid section can intersect a raised rim to create a well therebetween, with a penetration in the sloping section or the rim configured to block straight-line paths, for example by upwardly hinging of a flap or depressing half of a split, convex bubble. Embodiments include baffles that force a beverage to flow through a convoluted path and/or through chambers before being consumed. Baffles can be formed in place, or by hinged movement of flaps after forming. Textures and/or protruding structures can intercept, direct, and/or influence surface tension as beverage flows across surfaces. Vent hole sizes and locations can further limit flow and spilling.
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This application is a Continuation-In-Part of co-pending U.S. patent application Ser. No. 11/972,309, filed on Jan. 10, 2008, which is incorporated herein by reference in its entirety for all purposes. U.S. patent application Ser. No. 11/972,309 claims priority based on U.S. Provisional Application No. 60/879,935, filed Jan. 12, 2007, which is incorporated herein by reference in its entirety for all purposes. This application also claims the benefit of U.S. Provisional Application No. 61/122,964, filed Dec. 16, 2008, which is also incorporated herein by reference in its entirety for all purposes.
FIELD OF THE INVENTIONThe invention relates to lids for use with drinking vessels, and more particularly to splash and spill resistant disposable lids for drinking vessels.
BACKGROUND OF THE INVENTIONDisposable lids are frequently used in combination with drinking cups, coffee cups, and other types of drinking vessels and containers from which a beverage can be consumed. Some lid designs require removal of the lid from the drinking vessel for consuming the beverage contained therein, however, most commercial drinking cup lids feature a drink-through opening which allows a user to consume the beverage contained in a drinking vessel without removing the lid therefrom. Note that herein the terms “cup” and “vessel” are used generically to refer to all types of vessels and/or containers from which a beverage may be consumed.
Commonly used coffee cup lids typically feature a drink-through opening proximate to the perimeter of the lid in the form of a small unobstructed aperture or hole within the lid that allows a person to drink coffee or other beverage without removing the lid from the cup. In addition, at least one separate vent hole is often included in a disposable lid so as to allow air to enter the cup and equalize the pressure inside the cup as the beverage is consumed.
Of course, while providing a drink-through opening in a disposable lid facilitates consumption of the beverage therethrough without separating the lid from the drinking vessel, it also creates a risk that beverage could be inadvertently splashed or spilled out through the opening if the cup is inadvertently tipped or jostled, or is subjected to sudden acceleration or deceleration. These situations are often encountered when the cup or other drinking vessel is being transported, whether by hand or within a cup holder in a moving vehicle, or while walking, climbing stairs or traveling in an elevator or escalator.
Inadvertent spilling and splashing can create dangerous situations when a user is driving or moving. With today's busy lifestyle, consumption of beverages on-the-go and has become commonplace, and inadvertent spilling and splashing of beverage can be particularly irksome and embarrassing for a user when en route to work or to a professional and/or social engagement. The term “spilling” as generally used herein refers to inadvertent flowing of a beverage out of a cup or drinking vessel; and, the term “splashing” as generally used herein refers to the inadvertent ejection or scattering from a cup of beverage droplets or modest quantities of beverage that become airborne due to sudden and/or rapid movement of the drinking vessel.
It will be appreciated by those skilled in the art that lids for use with cold beverages such as sodas often include holes that fit snuggly around drinking straws, whereby the length of the straw effectively prevents splashing and spilling. However, straws are typically not practical, or at least are not preferred, when consuming a hot beverage such as tea, coffee, or hot chocolate.
Disposable lids designed for use with hot beverages sometimes include small holes or flaps near their rims that can be opened for drinking. However, turbulence or “sloshing” of a beverage when the cup is nearly full can easily lead to spilling of some liquid out from the hole, and jostling of the cup can cause liquid to splash or spill through such a hole or flap.
A drainage well is sometimes provided in a disposable lid so that small amounts of liquid that do spill or splash inadvertently from the drinking hole (or through a vent hole) will pool in a designated region of the lid and drain back into the cup. However, such drainage wells are typically shallow, and are only effective if the cup is maintained in a near-vertical orientation. In certain situations, jostling may even cause liquid to splash or spill out of the drainage well before it has drained back into the cup.
A drinking hole is sometimes placed at the top of a raised spout, so as to reduce the likelihood that liquid will spill or splash from the drinking hole. However, since the drinking hole is in the direct path of a beverage splash, liquid is still able to splash through the drinking hole if the cup is shaken or jostled with sufficient force, for example if the beverage is being consumed while traveling in a vehicle and the vehicle drives over a pot hole or other uneven feature in the road, or is forced to brake or maneuver suddenly.
Various types of lids with closable drinking holes and/or spouts have been proposed and/or are in use. Some provide a rotatable second piece that can seal the drinking hole, while others provide a tethered cap or plug that can be used to seal the drinking hole. However, these approaches only provide protection from spilling and splashing when the drinking hole is closed or blocked, and do not naturally inhibit spilling and splashing when open. Furthermore, when the drinking hole is closed or blocked it also prevents a user from consuming the beverage. In addition, these lids tend to be multi-piece constructions and may be generally too expensive to be practical for a disposable lid, or at least may be too cumbersome to use, as they require a user to plug and unplug the drinking hole manually each time a portion of beverage is to be consumed.
Another approach is to provide a separate insert that can be placed either on a cup or underneath a lid, the separate insert having fluid passages that are not aligned with the drinking and vent openings in the lid, thereby preventing straight-line travel by splashed, airborne droplets from the cup interior through a lid opening, and forcing the beverage to flow through a convoluted path before exiting through the lid. However, providing and installing a separate insert in addition to a lid is inconvenient and costly as compared to using a one-piece lid, and therefore tends to be impractical for disposable lids. Also, separate inserts can become dislodged or can shift in position, and can therefore be unreliable. This is true even if the insert is loosely attached to the lid or separately attached to the rim of the cup.
What is needed, therefore, is a disposable, one-piece lid for use with a drinking cup that enables drinking of a beverage without requiring separation of the lid from the drinking cup, while also inherently inhibiting or at least minimizing inadvertent spilling and splashing of the beverage from the cup without requiring deployment of manual plugs or blocking devices.
SUMMARY OF THE INVENTIONA one-piece disposable lid is claimed that includes structural features which enable drinking from a drinking cup while also inherently inhibiting splashing and spilling of the beverage from the drinking cup without requiring deployment of manual plugs or blocking devices. Spilling and splashing are inhibited by blocking straight-line paths that could be traversed by splashed, airborne droplets so as to escape through openings in the lid and by providing a dispensing well which allows any modest quantities of beverage received or remaining into the dispensing well to be drained back into the cup when the cup is held or returned to a near upright position.
In some embodiments, a drinking spout is included, the drinking spout comprising a dispensing well with at least one well penetration or opening for allowing fluid communication between the cup interior and the dispensing well. The well penetration allows transferring of beverage from the cup interior to the dispensing well for allowing a person to sip or consume the beverage by placing their lips around the drinking spout. The direction of fluid or beverage entry, through the well penetration, into the dispensing well from the cup interior is substantially orthogonal to the direction of beverage exit from the dispensing well for consumption of the beverage. Splashing droplets are thereby prevented from straight-line travel out of the spout, since beverage must enter the well in a direction substantially orthagonal to the central axis of the cup and then be dispensed in a direction substantially parallel to the central axis of the cup.
In other embodiments, the lid is elevated above the top of the cup, and a section of the lid slopes downward and intersects a raised rim wall so as to create a dispensing well therebetween. A well penetration is provided either in the sloping section or the inner wall of the raised rim, and is configured so that no straight-line path is provided from the interior of the cup into the dispensing well. In some of these embodiments, the well penetration is formed by depressing part of a split, convex bubble so as to form an opening through which a beverage can travel horizontally. In certain of these embodiment a part of the convex bubble is configured to be deformable by a user's lip so as to create the drink-through opening and allowing beverage to pass therethrough. In other embodiments, the opening is formed by an upwardly hinged flap, the flap remaining above the opening so as to intercept any splashed droplets that somehow manage to exit through the opening.
Certain embodiments include baffles and/or other structures that force a beverage to flow through a convoluted path before being consumed. In some of these embodiments the baffles are formed in place, while in other of these embodiments the baffles are formed by hinged movement of flaps after forming of the lid. In various embodiments, the baffles form one or more chambers through which the beverage must flow before it can be consumed.
Embodiments of the present invention include textures and/or protruding structures on one or more surfaces of the lid, so as to direct fluid flow across one or more surfaces, intercept splashed and/or rapidly flowing beverage, and/or enhance or retard retention of fluid due to surface tension.
Various embodiments include one or more vent holes that permit air to enter the cup and equalize the internal pressure as a beverage is consumed. In some of these embodiments, the vent holes are surrounded by vent wells, and in certain of these embodiments the vent holes are structured so as to minimize splashing by blocking straight-line passage of droplets from the cup interior through the vent holes. In some of these embodiments a plurality of vent holes is provided, which are initially sealed by blockages that can be removed by a user, and in some of these embodiments the plurality of vent holes includes vent holes of different sizes. These embodiments enable a user to select how many and/or which vent holes to open, so as to control the maximum rate at which a beverage can flow from the cup. In still other embodiments, at least one vent hole is located near the dispensing well, so that tipping of the cup from vertical beyond a certain angle will cause the beverage in the cup to block the vent hole, thereby minimizing the rate of beverage spillage.
One general aspect of the present invention is a one-piece lid for use with a drinking vessel. The one-piece lid includes a peripheral rim configured for engaging with said drinking vessel, a raised lid portion extending vertically from said peripheral rim, a dispensing well descending from the raised lid portion, said raised lid portion and said dispensing well being configured for allowing consumption of a beverage contained within an interior of said drinking vessel, and at least one well penetration that provides fluid communication between an interior of said drinking vessel and the dispensing well, the well penetration being configured for inhibiting straight-line paths between the interior of the drinking vessel and the dispensing well and thereby inhibiting at least one of spilling and splashing of said beverage contained within the interior of said drinking vessel.
Embodiments further include a drinking spout wherein the dispensing well is formed within the drinking spout, thereby causing beverage flowing through the well penetration and into the dispensing well to be drinkable from the drinking spout. In some embodiments the dispensing well is configured for allowing beverage contained within the dispensing well to flow through the well penetration and drain back into the interior of the drinking vessel when the drinking vessel is held in a generally upright orientation. In other embodiments the dispensing well includes a plurality of side walls and a bottom, and wherein the well penetration is formed in at least one of the side walls amongst said plurality of side walls of the dispensing well.
In various embodiments the dispensing well includes a bottom and at least one sidewall, and the well penetration is formed by a vertical gap between the bottom and at least one of said side walls. In certain embodiments the dispensing well is formed by side walls, a first bottom tier, and a second bottom tier, the well penetration being formed by a vertical gap between said first bottom tier and said second bottom tier.
In some embodiments the dispensing well is formed by side walls and a bottom, and at least a portion of the bottom is inclined toward the well penetration, thereby allowing beverage contained in the dispensing well to drain back through the well penetration into the interior of the drinking vessel when the drinking vessel is returned to a generally upright orientation. In other embodiments the dispensing well comprises a plurality of well penetrations, each of the well penetrations providing fluid communication between the interior of the drinking vessel and the dispensing well. And certain embodiments further include a splash guard descending from the raised lid portion toward the interior of the drinking vessel and surrounding the dispensing well.
Various embodiments further include at least one fluid baffle positioned underneath the dispensing well and configured to deflect beverage splashing from the interior of the drinking vessel and requiring the beverage to move through a convoluted path when flowing from the interior of the drinking vessel to the dispensing well. In some of these embodiments said at least one fluid baffle comprises a hinged flap, said hinged flap being rotatable about a living hinge. In other of these embodiments, said at least one fluid baffle comprises a hinge flap and a stop ridge, said hinge flap being rotatable about a living hinge and configured for engaging with said stop ridge.
In certain embodiments the dispensing well is formed by an intersection between a downward sloping section of the raised lid portion and a raised drinking rim. In some of these embodiments the well penetration is formed by a hinged flap formed in an inner wall of the raised drinking rim. In other of these embodiments said downward sloping section comprises a split, convex bubble, and said well penetration is created by depressing a first portion of said split, convex bubble into a concave configuration thereby creating an opening between said first concave bubble portion and an adjacent second convex bubble portion. In some of these embodiments a reinforcing structure is provided such said second convex bubble portion is resistant to depression compared to said first concave bubble portion. And in other of these embodiments said first portion of said split, convex bubble is depressible by a lip of a user while drinking from said dispensing well.
Certain embodiments further include a vent hole providing air communication between the interior of the drinking vessel and air exterior to the lid. Some of these embodiments further include a vent well cooperative with the vent hole and configured for collection of escaped beverage and allowing said escaped beverage to flow back into the interior of the drinking vessel. In other of these embodiments the vent hole is configured to inhibit straight-line paths from the interior of the drinking vessel through the vent hole. Various of these embodiments further include a plurality of sealed vent holes, said sealed vent holes being openable for regulating beverage flow from the dispensing well. And in some of these embodiments said plurality of sealed vent holes includes a plurality of vent hole sizes. In various embodiments that further include a vent hole, the vent hole is located proximal to the dispensing well for allowing blockage of the vent hole by beverage when the drinking vessel is tipped to a near horizontal orientation, thereby inhibiting beverage flow from the dispensing well.
In certain embodiments at least one surface of the lid includes at least one of a texture and a protruding structure configured to influence flow of beverage across said at least one surface. In some embodiments said lid is constructed from at least one of paper, plastic, thermoplastic resin, foam, a laminated material, a compostable resin, and a biodegradable material. In other embodiments said lid is manufactured by one of thermoforming, injection molding, compression molding, vacuum forming, pressure forming, and hydro forming. In various embodiments said lid is injection molded from a suitable grade of polypropylene resin. And in certain embodiments said lid is disposable.
In various embodiments said well penetration is in the form of an opening disposed in a plane approximately parallel to an upright axis of the cup. Other embodiments further include a drink-through opening in said raised lid portion. And in some of these embodiments said drink-through opening is one of circular, rectangular, oval, and semi-circular.
In certain embodiments the dispensing well and well penetration are configured to inhibit entry of solid particulates from the drinking vessel into the dispensing well. And in other embodiments said beverage is a drinkable fluid including one of tea, coffee, soup, shake, juice, and milk.
Another general aspect of the present invention is a splash resistant lid for a drink cup. The splash resistant lid includes a peripheral rim adapted for engaging with said drink cup, a raised portion extending upwardly from said peripheral rim, and a dispensing well disposed in said raised portion, said dispensing well comprising a drink-through opening, a bottom wall and a peripheral sidewall connected to said bottom wall,
said dispensing well featuring at least one inlet opening disposed proximate to an edge of said bottom wall, said inlet opening being adapted for receiving a beverage from said drink cup and transferring it to said drink-through opening, said dispensing well being adapted for drinking said beverage therethrough, and
said inlet opening being disposed in a plane substantially orthogonal to said drink-through opening and thereby inhibiting straight line paths between an interior of said drink cup and said drink-through opening.
In some embodiments said bottom wall comprises at least one inclined section, said inclined section having an underside, said underside being adapted to deflect any splashes and block them from entering said drink-through opening. In other embodiments said bottom wall comprises at least one inclined section, said inclined section having a topside, said topside being adapted to drain back any splashes to said interior of said drink cup through said inlet opening.
In certain embodiments said lid is injection molded, and in various embodiments said lid is made from polypropylene resin.
In some embodiments said raised portion includes a drinking spout and forms a one piece construction. Other embodiments further include at least one splash guard descending from said raised portion towards the interior of said drink cup. Certain embodiments further include a fluid baffle positioned underneath said dispensing well. And in some of these embodiments said fluid baffle is rotatable about a living hinge.
The features and advantages described herein are not all-inclusive and, in particular, many additional features and advantages will be apparent to one of ordinary skill in the art in view of the drawings, specification, and claims. Moreover, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes, and not to limit the scope of the inventive subject matter.
The present invention is generally directed towards one-piece lids that engage with a drinking cup or a similar vessel and allow a user to drink therefrom while naturally inhibiting splashing and spilling of beverage from the drinking vessel. As noted elsewhere, the lid constructions according to various embodiments of the invention offer particular utility for disposable drinking cups which are typically used for holding cold and hot beverages and are generally constructed from paper, plastic or foam materials. The drinking spout and dispensing well constructions in accordance with various embodiments of the invention can be utilized for consuming all kinds of hot and cold beverages including, coffee, tea, soup, shakes, frappes, and slush drinks. According to still other embodiments of the invention the lid spout and dispensing well constructions can be used for dispensing fluid materials including dressing, vinegar, coffee cream etc. According to still other embodiments of the invention the dispensing well construction can be adapted for sprinkling salt, pepper, spices and/or other granular or powdered substances. Accordingly, the following description of specific embodiments, in conjunction with the accompanying drawings, is offered as illustrative of the invention, and should not be regarded as restricting the scope of the invention.
With reference to
Lid 100 is formed by a single piece construction and can be manufactured using a variety of methods and materials. According to various embodiments of the invention the lid can be constructed from a plastic material, a paper substrate, a biodegradable material, a compostable material, or a combination of heterogeneous materials including at least one of paper, plastic, and foam materials or from mixtures thereof. According to other embodiments of the present invention the lid can be molded, formed, pressed, fabricated, or shaped utilizing a variety of processing methods and manufacturing techniques. According to a specific embodiment of the invention the lid 100 can be injection molded from a suitable plastic material. According to another embodiment of the invention the lid 100 can be made of polypropylene or similar thermoplastic resins. According to still other embodiments of the invention lid 100 can be thermoformed or compression molded.
Lid 100 includes structural features 102, 104 which allow a beverage contained in a drinking cup to be drunk through the lid 100; and which also inhibit splashing and spilling of the beverage from the drinking cup through the lid 100 without requiring closing or capping of a lid opening. Spilling and splashing are inhibited by substantially blocking or obstructing straight-line paths that could be traversed from the cup interior through openings in the lid 100 by splashed, airborne droplets or fluid masses; and by providing a dispensing well 104 which allows modest quantities of beverage which may reach the dispensing well inadvertently, due to movement or sudden acceleration or deceleration of the drinking cup, to be drained back into the drinking cup. In some embodiments, the dispensing well 104 is able to contain at least 0.25 ml of beverage when the drinking vessel is tipped from vertical by not more than 45 degrees.
Lid 100 comprises an outer peripheral portion 50, an interim annular portion 60 raised above outer peripheral portion 50, and a central body portion 70.
Outer peripheral portion 50 of lid 100 is adapted for engaging with the drinking cup, and underside 40 has an underside peripheral channel 54 which typically has a C-shaped or U-shaped cross-section and which is adapted to grip and receive a drinking cup lip therein, and thereby form a leak-tight seal between the respective perimeters of lid 100 and the drinking cup adapted for use therewith. The drinking cup lip may comprise a rolled-lip or bead-like configuration. Alternately, the cup lip may be in the form of a turned-down lip or other similar configuration as is well known to those skilled in the art.
Outer peripheral portion 50 of lid 100 also has a peripheral skirt 52 which extends downwardly from the underside peripheral channel 54 and flares outwardly therefrom. Peripheral skirt 52 facilitates a good lid-fit by centering and guiding the drinking cup lip within peripheral channel 54 when lid 100 is pushed downwardly against the cup lip for securely snapping lid 100 onto the cup.
Interim annular portion 60 comprises an outer sidewall 61, a top wall 62 and an inner sidewall 63. Underside peripheral channel 54 is connected to outer sidewall 61 and defines a peripheral recess 56 therebetween; peripheral recess 56 is disposed on the outer side 30 of lid 100. Interim annular portion 60 extends upwardly from the inward edge of peripheral recess 56 along outer sidewall 61 which connects with a top wall portion 62 and slopes downwardly along inner sidewall 63 and circumscribes central body portion 70 of lid 100. Outer sidewall 61, top wall 62 and inner sidewall 63 cooperate to form a raised frontal section or drinking spout 102 and ramp down on either side of the raised frontal section or drinking spout 102. Interim annular portion 60 is generally shaped so as to minimize incidental contact of the lid with a consumer's nose and upper lip during consumption of a beverage. Drinking spout 102 is shaped for allowing consumption of the beverage without requiring a consumer to excessively tilt his or her head backwards as the cup approaches the final sips, thereby avoiding line-of-sight impediment.
The inner sidewall 63 of the interim annual portion 60 is connected to the central body portion 70 of lid 100 via mid wall 72. Mid wall 72 may also include a vent hole 110. Vent hole 110 is adapted for maintaining pressure equilibrium between the interior of the lidded cup and the surroundings thus allowing the user to comfortably drink from the cup. Vent hole 110 may further serve as a drain hole for any excess beverage that accidentally overflows on the top of central body portion 70. While the vent hole 110 is shown to be centrally located in
Drinking spout 102 includes a beverage dispensing well 104 located in the top wall 62. The raised frontal section or drinking spout 102 and the width of the top wall 62 in the frontal section of lid 100 are adapted and dimensioned for positioning the raised frontal section or drinking spout 102 between a person's lips for drinking comfortably therethrough. During use, the outer sidewall 61 is adapted for touching the person's bottom lip while the inner sidewall 63 is adapted for touching the upper lip of the person.
According to other embodiments of the invention, the location of drinking spout 102 is adapted for regulating the quantity of beverage dispensed therefrom while sipping, and/or the vent hole is located proximate to the drinking spout 102 for preventing spillage therethrough when, for example, the cup is accidentally knocked over sideways. Thus the flow of beverage that is dosed out of the dispensing well 104 is regulated by the differential in air pressure inside the cup vs. air pressure of the surroundings since, when the vent hole 110 becomes plugged by beverage, no additional beverage can issue out of the spout 102 until the user puts the cup down and allows re-equilibration of air pressure between the inside of the cup and the surroundings. This is particularly helpful when the beverage inside the cup is hot and an inadvertently large sip can burn a consumer's mouth.
The construction of the drinking spout 102 is shown in
The positioning and orientation of the opening 116 in cooperation with the depth and configuration of the dispensing well 104 inhibit splashed beverage from becoming airborne and escaping from the drinking spout. If a small amount of beverage from the cup inadvertently and unintentionally passes through the opening 116, for example due to tipping, shaking, or jostling of the cup, the liquid will remain in the dispensing well 104 and drain back through the opening 116 into the cup.
In the embodiments shown herein, all the features and wall members are integral to the lid 100 and hence allow lid 100 to be molded, formed or manufactured as a one piece structure. It will be realized that various modifications of this concept can be made by manipulating the angle of inclination of bottom wall 114, or providing a plurality of openings in any of the wall portions defined by pair of sidewalls 112, front wall 82 and back wall 83.
According to another embodiment of the invention (not shown) the inclination of the bottom wall 114 is reversed and instead of having an inclination towards the back wall 83, as shown in
In yet another embodiment the openings are provided in the pair of sidewalls 112 and the bottom wall 114 comprises two inclined portions one inclined towards one sidewall and the other inclined towards another sidewall. Thus, the specific inclination of bottom wall 114 or the location of the side opening 116 is shown in
According to a specific embodiment of the invention, lid 100 is made of a suitable thermoplastic material which can be processed by common polymer processing methods known in the art. The choice of a thermoplastic resin is typically governed by a variety of factors including cost, resin processability, and other functional requirements of the plastic part. In a preferred embodiment of the invention, lid 100 is injection molded from a suitable grade of polypropylene resin. However, it will be apparent to those skilled in the art that lid 100 can be adapted for manufacture by other known methods of processing plastics, including thermoforming, vacuum forming, pressure forming, and compression molding. Lid 100 can also be constructed from a suitable material such as foam, coated paper, or paper/plastic laminates suitable for handling the conditions of use and the temperatures typically employed while serving hot and cold beverages.
Although, some variations in the shown embodiment have been discussed above, numerous other embodiments are possible and within the scope of the invention.
In the embodiment of
Different fluids have different viscosities and different surface tension and/or wetting characteristics. Accordingly, some embodiments of the present invention include textures, baffles, and/or other structural features 118 on various surfaces so as to intercept splashed droplets or rapidly flowing beverage, direct beverage flow, and/or promote or inhibit surface tension and flow properties of beverage on the surfaces. Furthermore, it will be appreciated by skilled artisans that the depth of the dispensing well 104 and the size of the side opening 116 can be optimized with respect to viscosity and fluid properties of a typical beverage so as to control the amount of beverage that is likely to be splashed into the dispensing well when the drink cup is jostled the speed with which the beverage can be drained back into the cup, and the amount of beverage that can be spilled through the opening 116 without overflowing the dispensing well 104. For example, on one hand a deeper well 104 and a relatively small opening 116 may be desirable to provide superior spill and splash resistance, however, a small opening 116 may also interferes with the rate of dispensing and a drainage back into the cup and may adversely affect ease of drinking.
In various embodiments, the sizes and numbers of the openings 116, as well as the complexity of the path through which a beverage must flow before entering the dispensing well 104, result in a short delay between tipping of the cup and effluence of the beverage, thereby providing an opportunity to prevent, or at least to limit, spilling of the beverage if the cup is accidentally overturned by quickly returning the cup to an upright orientation. Space between the dispensing well 104 and the inner walls of the drinking spout 102 also allows any particulates contained in the beverage, such as coffee grounds or tea leaves, to be collected and prevented from flowing out of the cup with the beverage.
The sloping section 204 of the lid 200 has formed therein a convex bubble that is split into two halves 212A, 212B. When both of the bubble halves 212A, 212B are in a convex configuration, as shown in
As illustrated in
According to some embodiments of the invention, bubble half 212A is configured to undergo deformation against slight pressure exerted by a user's upper lip while the user is drinking therefrom, thereby obviating the need for pre-depressing the bubble half 212A.
Although various general functional elements of the present invention, including various dispensing well, spout and baffle geometries, have been described herein in conjunction with the figures, it will be appreciated by those skilled in the art that numerous shape, appearance and design modifications can be made to the lid, dispensing well, and spout geometries of the present invention in accordance with user and market preferences. Furthermore, the utility of the spill resistant lid is not necessarily limited to a drinking-cup lid, and can be implemented into other container structures such as a closure for a bottle, or a pour spout for a bottle or a carton or a cup. In addition, the spout geometry can be implemented not only for consumable or drinkable beverages but also for dosing and dispensing salad dressings, cream, milk, and non-fluid materials such as sugar or salt. These and other such changes, modifications, adaptations and alterations in the specifically described embodiments can be carried out without departing from the spirit and scope of the invention. Accordingly, the drawings and the description are to be regarded as illustrative in nature, and not as restrictive.
The foregoing description of the embodiments of the invention has been presented for the purposes of illustration and for providing a general understanding of the invention. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. Many modifications and variations are possible in light of this disclosure. It is intended that the scope of the invention be limited not by this detailed description, but rather by the claims appended hereto.
Claims
1. A one-piece lid for use with a drinking vessel, said one-piece lid comprising:
- a peripheral rim configured for engaging with said drinking vessel;
- a raised lid portion extending vertically from said peripheral rim;
- a dispensing well descending from the raised lid portion, said raised lid portion and said dispensing well being configured for allowing consumption of a beverage contained within an interior of said drinking vessel; and
- at least one well penetration that provides fluid communication between an interior of said drinking vessel and the dispensing well, the well penetration being configured for inhibiting straight-line paths between the interior of the drinking vessel and the dispensing well and thereby inhibiting at least one of spilling and splashing of said beverage contained within the interior of said drinking vessel.
2. The one-piece lid of claim 1 further comprising a drinking spout wherein the dispensing well is formed within the drinking spout, thereby causing beverage flowing through the well penetration and into the dispensing well to be drinkable from the drinking spout.
3. The one-piece lid of claim 1, wherein the dispensing well is configured for allowing beverage contained within the dispensing well to flow through the well penetration and drain back into the interior of the drinking vessel when the drinking vessel is held in a generally upright orientation.
4. The one-piece lid of claim 1, wherein the dispensing well comprises a plurality of side walls and a bottom, and wherein the well penetration is formed in at least one of the side walls amongst said plurality of side walls of the dispensing well.
5. The one-piece lid of claim 1, wherein the dispensing well comprises a bottom and at least one sidewall, and wherein the well penetration is formed by a vertical gap between the bottom and at least one of said side walls.
6. The one-piece lid of claim 1, wherein the dispensing well is formed by side walls, a first bottom tier, and a second bottom tier, the well penetration being formed by a vertical gap between said first bottom tier and said second bottom tier.
7. The one-piece lid of claim 1, wherein the dispensing well is formed by side walls and a bottom, and at least a portion of the bottom is inclined toward the well penetration, thereby allowing beverage contained in the dispensing well to drain back through the well penetration into the interior of the drinking vessel when the drinking vessel is returned to a generally upright orientation.
8. The one-piece lid of claim 1, wherein the dispensing well comprises a plurality of well penetrations, each of the well penetrations providing fluid communication between the interior of the drinking vessel and the dispensing well.
9. The one-piece lid of claim 1, further comprising a splash guard descending from the raised lid portion toward the interior of the drinking vessel and surrounding the dispensing well.
10. The one-piece lid of claim 1, further comprising at least one fluid baffle positioned underneath the dispensing well and configured to deflect beverage splashing from the interior of the drinking vessel and requiring the beverage to move through a convoluted path when flowing from the interior of the drinking vessel to the dispensing well.
11. The one-piece lid of claim 10, wherein said at least one fluid baffle comprises a hinged flap, said hinged flap being rotatable about a living hinge.
12. The one-piece lid of claim 10, wherein said at least one fluid baffle comprises a hinge flap and a stop ridge, said hinge flap being rotatable about a living hinge and configured for engaging with said stop ridge.
13. The one-piece lid of claim 1, wherein the dispensing well is formed by an intersection between a downward sloping section of the raised lid portion and a raised drinking rim.
14. The one-piece lid of claim 13, wherein the well penetration is formed by a hinged flap formed in an inner wall of the raised drinking rim.
15. The one-piece lid of claim 13, wherein said downward sloping section comprises a split, convex bubble, and wherein said well penetration is created by depressing a first portion of said split, convex bubble into a concave configuration thereby creating an opening between said first concave bubble portion and an adjacent second convex bubble portion.
16. The disposable lid of claim 15, wherein a reinforcing structure is provided such said second convex bubble portion is resistant to depression compared to said first concave bubble portion.
17. The disposable lid of claim 15, wherein said first portion of said split, convex bubble is depressible by a lip of a user while drinking from said dispensing well.
18. The one-piece lid of claim 1, further comprising a vent hole providing air communication between the interior of the drinking vessel and air exterior to the lid.
19. The one-piece lid of claim 18, further comprising a vent well cooperative with the vent hole and configured for collection of escaped beverage and allowing said escaped beverage to flow back into the interior of the drinking vessel.
20. The one-piece lid of claim 18, wherein the vent hole is configured to inhibit straight-line paths from the interior of the drinking vessel through the vent hole.
21. The one-piece lid of claim 18, further comprising a plurality of sealed vent holes, said sealed vent holes being openable for regulating beverage flow from the dispensing well.
22. The one-piece lid of claim 21, wherein said plurality of sealed vent holes includes a plurality of vent hole sizes.
23. The one-piece lid of claim 18, wherein the vent hole is located proximal to the dispensing well for allowing blockage of the vent hole by beverage when the drinking vessel is tipped to a near horizontal orientation, thereby inhibiting beverage flow from the dispensing well.
24. The one-piece lid of claim 1, wherein at least one surface of the lid includes at least one of a texture and a protruding structure configured to influence flow of beverage across said at least one surface.
25. The one piece lid of claim 1, wherein said lid is constructed from at least one of paper, plastic, thermoplastic resin, foam, a laminated material, a compostable resin, and a biodegradable material.
26. The one piece lid of claim 1, wherein said lid is manufactured by one of thermoforming, injection molding, compression molding, vacuum forming, pressure forming, and hydro forming.
27. The one piece lid of claim 1, wherein said lid is injection molded from a suitable grade of polypropylene resin.
28. The one-piece lid of claim 1, wherein said lid is disposable.
29. The one piece lid of claim 1, wherein said well penetration is in the form of an opening disposed in a plane approximately parallel to an upright axis of the cup.
30. The one-piece lid of claim 1 further comprising a drink-through opening in said raised lid portion.
31. The one-piece lid of claim 30, wherein said drink-through opening is one of circular, rectangular, oval, and semi-circular.
32. The one-piece lid of claim 1, wherein the dispensing well and well penetration are configured to inhibit entry of solid particulates from the drinking vessel into the dispensing well.
33. The disposable lid of claim 1, wherein said beverage is a drinkable fluid including one of tea, coffee, soup, shake, juice, and milk.
34. A splash resistant lid for a drink cup comprising:
- a peripheral rim adapted for engaging with said drink cup;
- a raised portion extending upwardly from said peripheral rim; and
- a dispensing well disposed in said raised portion, said dispensing well comprising a drink-through opening, a bottom wall and a peripheral sidewall connected to said bottom wall,
- said dispensing well featuring at least one inlet opening disposed proximate to an edge of said bottom wall, said inlet opening being adapted for receiving a beverage from said drink cup and transferring it to said drink-through opening, said dispensing well being adapted for drinking said beverage therethrough, and said inlet opening being disposed in a plane substantially orthogonal to said drink-through opening and thereby inhibiting straight line paths between an interior of said drink cup and said drink-through opening.
35. The splash resistant lid according to claim 34, wherein said bottom wall comprises at least one inclined section, said inclined section having an underside, said underside being adapted to deflect any splashes and block them from entering said drink-through opening.
36. The splash resistant lid according to claim 34, wherein said bottom wall comprises at least one inclined section, said inclined section having a topside, said topside being adapted to drain back any splashes to said interior of said drink cup through said inlet opening.
37. The splash resistant lid according to claim 34, wherein said lid is injection molded.
38. The splash resistant lid according to claim 34, wherein said lid is made from polypropylene resin.
39. The splash resistant lid according to claim 34, wherein said raised portion comprises a drinking spout and forms a one piece construction.
40. The splash resistant lid according to claim 34, further comprising at least one splash guard descending from said raised portion towards the interior of said drink cup.
41. The splash resistant lid according to claim 34, further comprising a fluid baffle positioned underneath said dispensing well.
42. The splash resistant lid according to claim 41, wherein said fluid baffle is rotatable about a living hinge.
Type: Application
Filed: Dec 16, 2009
Publication Date: Jun 3, 2010
Applicant: Waddington North America, Inc. (Chelmsford, MA)
Inventors: Craig S. Whitaker (Fairfield, OH), Ashish K. Mithal (North Chelmsford, MA), Matthew J. Wichmann (Cresent Springs, KY), Michael G. Evans (Cincinnati, OH), Van T. Walworth (Lebanon, TN)
Application Number: 12/639,649
International Classification: B65D 47/00 (20060101);