Tumbler lid with reservoir and repetitive measuring and disbursement mechanism

Abstract

This container lid fits onto existing insulated cups. It has a refillable and sealable reservoir and in the preferred embodiment includes a top opening to receive substances and a bottom opening to release substances into a container. The release of substances into the beverage container is controlled and is measured before release. A preferred double piston and button combination interact with a narrow section of the reservoir to dispense only a portion of the contents from the reservoir into the container. The released portion is carefully metered within the narrow channel when the double piston alternately seals a first opening and a second opening of the narrow channel. The reservoir serves to store the unreleased substance until the next time the button is activated to release addition substance into the container.

Description

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not applicable.

THE NAMES OF THE PARTIES TO A JOINT RESEARCH AGREEMENT

Not applicable.

INCORPORATION-BY-REFERENCE OF MATERIAL SUBMITTED ON A COMPACT DISC

Not applicable.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to a lid received by an insulated cup, and more particularly to such an attachable container lid with a sealed reservoir isolated from the contents of the cup for holding and selectively dispensing additive substances.

2. Description of the Related Art

Reusable beverage containers and insulated tumbler cups and mugs are known in the art and many conventional models are available on the market. The standard models of these refillable and reusable “go-cups,” travel mugs, and water bottles are typically sold with a removable lid and those removable lids typically encompass a closeable drinking access. Some cup models are vacuum-sealed with double walls to improve insulation even further.

Insulated cups are used widely for both hot and cold beverages. Yeti® Rambler Tumblers are particularly popular and these cups work great to keep drinks cool. They are also very popular for use during social functions including sporting events and outdoor adventures. Because flavoring, creamer, liquors, or spirits are used in smaller proportion to the primary beverage, there is a need to transport these additives separately from the insulated cup when one wishes to replenish the primary beverage on the go. If a cocktail is desired, an individual must port around a flask, or some other glass or plastic container to pour liquids into the primary beverage. Furthermore, the selection and quantity of additives are a matter of personal choice, so while the primary beverages may be more readily available to refill the primary container, the additives may require transport by an individual or transport of many various containers to serve multiple individuals. Transporting additives separately from insulated containers on hot days results in the additives becoming too warm to consume or leaving the mixed beverage warmer than desired or even watering down the primary beverage due to melting of ice. When on the go, measuring the right amount of an additive is challenging and can lead to undesirable proportions in the mixture of additive to the primary beverage, leaving mixed drinks either over or under poured.

Individuals have turned to employing separate containers such as flasks or mini-bar size bottles to transport spirits or liquors. Companies have begun providing flavoring and creamers in plastic-disposable servings to meet the tastes of people on the go. Prior attempts to permit the transport of beverage flavorings in conjunction with the go-cups have failed because they have universally required one-time use through the breaking of a membrane or a tearing or puncturing of a seal. While some prior art has taught to have button actuation release of the content from the compartment to the cup without removal of the lid, those attempts have required a single-use of at least an additive vessel inserted within the lid. Personalization of the insertion of flavoring additives to a travel cup have been addressed only by the use of multiple compartments which require the breaking or tearing of multiple, single-use membranes. In many cases the activation of an additive chamber results in the prevention of any further use of the entire lid so that the entire lid is disposable.

While the multi-compartments have the ability to release only a pre-measured, set amount, they are cumbersome to operate because each compartment requires an individual releasing mechanism or the ability to turn or move the actuating mechanism to release the contents of the compartments. The prior art generally teaches that discharged containers should be locked open and any additive stored in a compartment should be completely discharged upon deployment.

Many inventions must be removed in order to drink the contents of the beverage container. Other inventions have sought ways to add a small amount of additive when a container is tipped for pouring. In one example, a compartment released an additive into the outflow of a container and thus only when the lid was properly rotated and the beverage container was horizontally tipped. While creating a compartment for an additive within the lid, these efforts have removed the ability for the lid to allow fluid transfer for direct drinking. Another invention dripped additive into the stream of a soda after a large lid and cover was attached to the exterior of a soda can. As with the prior example, the additive is only mixed with the beverage flow when it exits the container's spout. The prior art is occupied with cumbersome attachments that are difficult to manufacture and require wasteful utilization of single-use vessels or sophisticated titrating with reservoirs that are not reusable or refillable.

BRIEF SUMMARY OF THE INVENTION

The container lid of the present invention is for use with a beverage container such as an insulated travel mug or tumbler cup. The lid has a refillable and resealable reservoir, and a user control, such as a manually operable button, for actuating a sealing mechanism separating the beverage container and a storage reservoir for the controlled and repeatable measuring and dispensing of contents from the storage reservoir into the beverage container. The lid is desirably sized to fit most brands of conventional beverage containers. The use of a coupling such as a tapered ledge with an annular seal will permit the lid to reliably and repeatedly attach to the interior wall of various insulated cups such as by an interference fit.

This lid for a beverage container comprises: a refillable reservoir with a measuring channel in the shape of a tube and a sealing mechanism to selectively block the tube and permit an additive to move into the measuring channel from the reservoir and then, after sealing the reservoir, releases the additive out of the measuring channel into the beverage container. The sealing mechanism preferably takes the form of a reciprocating double piston or plunger mechanically connected to an actuating mechanism in the form of a button or other control located on the lid. The double piston has seals that radially interface with the walls of the measuring tube. Through the use of the button, a user will move the upper and lower piston portions and therefore also the seals through a series of stations and the reciprocating sealing mechanism will selectively: block the distal aperture of the measuring channel while simultaneously unblocking the proximal aperture of the measuring channel; simultaneously block the proximal aperture of the measuring channel and the distal aperture; block the proximal aperture of the measuring channel while simultaneously unblocking the distal aperture of the measuring channel, and the many various stages in between these enumerated stations. In the default position, the lower, distal piston seal blocks the middle to bottom of the measuring channel. In this position, additive will spill into the channel. If the reservoir is full at the time of use, the measuring channel will fill with up to its maximum volume of additive. When the button is pressed the entire double piston will move down. Because the double piston is sized to simultaneously close the upper and lower opening of the measuring tube, the tube will fill with additive until the upper seal of the piston blocks the upper opening of the tube. For a time, while the upper, proximal piston seal and lower piston seal are both within the tube of the measuring channel, the additive will be sealed within the measuring channel. As the piston continues to descend due to pressure by the control, the lower seal of the piston will separate from the lid's open end. Since the lower seal is no longer formed with the walls of the tube, the additive that was housed in the measuring channel spills out of the tube and into the interior of the cup. Thus, with one push of the button, a known quantity of additive will enter the cup and then, with another push of the button the piston movement will be repeated and another known quantity of additive will enter the cup. In the preferred embodiment, each press of a button will dispense approximately ½ ounce, or about 15 milliliters.

The reservoir is refillable because it has an access hatch, also called a filling port, which is easily accessed and used to refill the additive contents stored in the reservoir. The stored contents of the reservoir do not come into contact with the tumbler's contents. Only additive released from the bottom of the measuring tube will enter and mix with the tumbler contents while the remaining additive is securely stored. Ideally, the reservoir will hold approximately 2-7 ounces (about 60-210 mL). The preferred access hatch will include a hinged door with securing closures and surrounding seals. In the preferred embodiment, the lid is constructed of a clear resin which allows a user to observe when the reservoir is depleted without opening the filling access hatch.

The lid includes a stand-alone drinking access that allows a user of an insulated cup to enjoy the contents of the cup without worrying about spilling or any further mixing of the contents of the reservoir with the primary beverage. In the preferred embodiment, the drinking access is surrounded by a wall that partitions the drinking access from the cup and the rest of the lid. In alternative embodiments, one side of the drinking channel may be formed by the interior wall of the tumbler.

More specifically, and in a presently preferred embodiment, by way of example and not necessarily by way of limitation, a preferred lid for a tumbler has a lower portion creating a reservoir and an upper portion to cover and access the reservoir for filling. Extending below the reservoir is a narrowed tube with an open bottom. A first piston seal segregates the base of the tube to separate contents in the reservoir from the cup. A second piston, parallel to the first piston, is within the reservoir resting just above the tube to allow contents of the reservoir to fill the tube. An actuating mechanism in the form of a button is simultaneously affixed to the two pistons by a shaft. When the actuating mechanism is partially engaged the shaft forces the first piston and second piston to move downward in the tube, resulting in a maximum, measured amount of reservoir contents to be transferred into the tube and then sealing the transferred contents within the tube and excluding further contents from entering the tube. When the actuating mechanism is completely engaged the first piston extends past the bottom tube opening to release the measuring tube's content into the tumbler while the second piston remains within the tube to prevent the remaining reservoir contents from escaping into the tumbler.

The present invention meets the need for a refillable reservoir lid which can repeatedly release measured quantities of a single additive into a cup's interior cavity. The present invention stores and then moves liquid from one refillable reservoir to the cup's refillable reservoir. The present invention is a single lid with an additive reservoir for storing contents in a segregated compartment. The lid has the ability to measure and release only a portion of the storage compartment contents without the user removing the lid. Since the compartment is integrated into a reusable lid that is adapted to fit most commercial tumblers there is very little waste associated with the product. The lid meets the needs to provide a visible transfer of liquid into a tumbler which may be opaque. The lid further meets the need to aid in the insulation objectives of the tumbler in that the materials used are insulating and the additive will maintain a temperature consistent with the contents of the tumbler. The present invention also provides a drinking access that operates independently from the additive reservoir thus preventing any mixing and allowing the normal use of the tumbler even when the lid's metered dispensing features are not employed. In the event that the device is used to transport liquor or spirits, the lid integrates into the tumbler so that the user has less to carry, can carry the substances discretely, and can have a much easier and predictable dispensing mechanism when in an environment without access to measuring tools. Finally, by releasing a measured and known quantity, the risk of mistaken oversaturation of a concentrated additive due to overpouring is reduced and safety is enhanced.

The commercial embodiment of the present invention, branded as “FlasKap,” boasts a shot-dispensing lid for a stainless-steel travel tumbler. Not only does the FlasKap keep beverages insulated and splash free, but it dispenses, with the push of a button, a favorite beverage enhancer in quantities of ½ shot (½ Ounce (oz.)) at a time. The FlasKap lid is initially offered in two convenient sizes to perfectly fit almost any stainless-steel tumbler. A 7-ounce FlasKap lid stores up to 7 oz. and fits onto taller tumblers ranging from about 30-35 ounces. A 5-ounce FlasKap lid holds up to 5 oz. and fits smaller (20-24 oz.) tumblers. In most instances, a lid-volume to cup-volume ratio of about 1:5 will be desirable. Within the lid, a storage-volume to metering-volume ratio of about 1:12 is preferred. The FlasKap branded lid is anticipated to be useful for sporting events/tailgating, outdoor concerts/festivals, at the beach, on the boat, floating the river, golfing, fishing, camping or other outdoor adventures, relaxing at home (BBQ, Pool, Deck, Porch), or if no alcohol is being consumed then, while riding an ATV/UTV/Quad/ or Side By Side—just to name a few.

The foregoing has outlined, in general, the physical aspects of the invention and is to serve as an aid to better understanding the more complete detailed description which is to follow. In reference to such, there is to be a clear understanding that the present invention is not limited to the method or detail of construction, fabrication, material, or application of use described and illustrated herein. Any other variation of fabrication, use, or application should be considered apparent as an alternative embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The following drawings further describe by illustration, the advantages and objects of the present invention. Each drawing is referenced by corresponding figure reference characters within the “DETAILED DESCRIPTION OF THE INVENTION” section to follow.

FIG. 1 is a perspective view of the preferred embodiment of the present invention with the reservoir access hatch shown in a closed position.

FIG. 2 is a second perspective view of the preferred embodiment of the present invention with the reservoir access hatch shown in an open position.

FIG. 3 is an exploded, perspective view of the components of the preferred embodiment of the present invention.

FIG. 4 is an isolated perspective view of the top member of the lid of FIG. 3.

FIG. 5 is an isolated perspective view of the bottom member of the lid of FIG. 3.

FIG. 6 is an isolated perspective view of the double piston of FIG. 3.

FIG. 7 is a cross-sectional view of the preferred embodiment of the present invention with the actuating mechanism in a resting position and additive partially filling the measuring channel.

FIG. 8 is a cross-sectional view of the preferred embodiment of the present invention with the actuating mechanism partially engaged and metering the additive before distribution.

FIG. 9 is a cross-sectional view of the preferred embodiment of the present invention with the actuating mechanism fully engaged and dispensing the metered contents into the cup.

FIG. 10 is an exploded, perspective view of the upper components of the preferred embodiment of the present invention showing an alternative venting structure.

FIG. 11 is a perspective view of a first alternative embodiment where the fill port is covered by a twisting cap integrated into the actuating mechanism.

FIG. 12 is a cross-sectional view of FIG. 11.

FIG. 13 is a cross-sectional view of the alternative embodiment in FIG. 11 with the actuating mechanism in a resting position and additive partially filling the measuring channel.

FIG. 14 is a cross-sectional view of the alternative embodiment in FIG. 11 with the actuating mechanism fully engaged and dispensing the metered contents into the cup.

FIG. 15 is a perspective view of a second alternative embodiment where the actuating mechanism is a bulb style plunger separate from the fill port.

FIG. 16 is a cross-sectional view of FIG. 15.

FIG. 17 is a perspective view of a third alternative embodiment where the actuating mechanism is a plunger separate from the fill port.

FIG. 18 is a cross-sectional view of FIG. 17.

FIG. 19 is a perspective view of a fourth alternative embodiment where the actuating mechanism is created by interfacing top and bottom lid members.

FIG. 20 is a cross-sectional view of FIG. 19.

FIG. 21 is a perspective view of an alternative embodiment for a fill port opening showing the reservoir cover in an opened position.

FIG. 22 is a second perspective view of the alternative embodiment shown in FIG. 21 where the fill port reservoir cover is in a closed position.

LIST OF REFERENCE NUMERALS

• • 1 Lid
    • 11 Open bottom
    • 12 Reservoir
  • 2 Lid top/upper reservoir
    • 20 Drinking/Straw hole
    • 21 Upper drinking channel
    • 22 Reservoir hole/filling port
    • 23 Upper Lid Vent hole
    • 24 Button recess
    • 25 Top alignment lip
    • 26 Peg recess
    • 27 Hinge receiving hole
    • 28 Reservoir Vent
    • 29 Opening ledge/lift tab
  • 3 Lid bottom/lower reservoir
    • 31 Lower drinking channel
    • 32 Metering tube
    • 33 Bottom venting hole
    • 34 Ledge for seal
    • 35 Alignment lip
    • 36 Ledge for cup
    • 37 Drain path
  • 4 Double piston/double plunger
    • 41 Upper piston
    • 42 Upper piston seal
    • 43 Lower piston
    • 44 Lower piston seal
    • 45 Shaft receiving hole
  • 5 Actuating mechanism
    • 51 Button
    • 52 Threading insert
    • 53 Spring
    • 54 Shaft seal
    • 55 Threaded shaft
    • 56 Twist lock cover
    • 57 Bulb-style actuating mechanism
    • 58 Plunger-style actuating mechanism
    • 59 Lid Circumference actuating mechanism
  • 6 Fill lid/Reservoir cover
    • 61 Hinge
    • 62 Securing peg
    • 63 Cover Venting hole
    • 64 Fill lid seal/cover seal
    • 65 Opening ledge
    • 66 Vent flap
  • 7 Cup/Tumbler/Container
    • 71 Interior wall
    • 72 Interior cavity
  • 8 Cup seal/gasket
  • 9 Additive/Substance
    • 91 Stored additive/substance
    • 92 Metered additive/substance
    • 93 Released substance
  • 100 One way valve
  • 101 Intake/Inlet tube
  • 102 Output/Outlet tube
  • 103 Output channel

DETAILED DESCRIPTION OF THE INVENTION

FIGS. 1 and 2 show a reservoir lid 1 in its commercial form. The lid 1 will be sold as an accessory to be placed on an existing beverage container such as the tumblers sold under major cup brands like Yeti®, Ozark Trail™, Grizzly™, Reduce™, Rtic® and others. The lid 1 of the present invention will be sold as a single branded unit but may also be co-branded or sold with a tumbler included. The lid is not exclusively for use on tumblers but will find applications for any compatible beverage container or insulated beverage container which will receive the lid's circumference and join with a gasket seal 8. Herein, a compatible beverage container may be referenced collectively as a tumbler or a cup 7 but general reference is intended. The entirety of a beverage container will be referenced throughout the disclosure and sample tumblers are shown in FIGS. 1-22.

With continuing reference to FIGS. 1 and 2, the preferred embodiment of the present embodiment of the invention is friction fit into the tumbler 7 as shown in FIGS. 7 - 9. Sizing of the unit plus the use of the gasket seal 8 establishes a liquid-tight seal with the tumbler. At least everything below the gasket 8 recesses down into the tumbler 7 including a good portion of a storage chamber or reservoir 12 with a narrow, measuring/measurement chamber or channel in the form of a metering or measuring tube 32 where contents of the reservoir 12 are ready to be metered and dispensed through the open bottom 11 (best visible in FIG. 9). A double piston 4 (also called a double plunger) works in conjunction with the interior side walls 321 within the measuring tube 32. Depending on which aperture of the measuring channel is sealed, the measuring tube 32 is in fluid communication with either the reservoir or with the beverage container or if both apertures are sealed then no liquid moves into or out of the measuring tube 32.

Above the gasket 8 is the portion of the lid 1 that sits at or near the top of the tumbler 7. A button actuating mechanism 5 is provided in this portion of the lid as shown in FIG. 1. A drinking aperture or hole 20, also called a drinking access, allows a user to use the tumbler 7 for normal drinking functions. A first alternative, cover a venting hole 63 extends from a cavity 72 of the cup 7 all the way through an opening ledge 65 and permits air to flow into and out of the cavity 72 when a user is drinking. In the preferred embodiment, the lid 1 includes a lift tab 29 (shown in FIG. 2) to assist in removing the lid 1 from a tumbler 7. This feature serves as a prying aid to assist in the removal of the lid 1 from the tumbler 7 for refilling of the tumbler. The lift tab 29 may also be helpful in some alternative embodiments for separating a top lid member 2 and a bottom lid member 3 of the preferred embodiment before cleaning (shown in FIG. 3).

In order to begin using the preferred embodiment, a primary beverage such as soda, coffee, juice, tea, water, or the like is placed in a compatible tumbler 7. Next, the reservoir lid 1 is inserted into the top opening of the tumbler and pressed down until the gasket 8 reliably seals with the interior surface of an interior wall 71 of the tumbler 7. (See FIGS. 7-9.) The lid must be attached in a liquid-tight manner on the tumbler and the liquid-tight connection must withstand the emptying of the reservoir into the tumbler and drinking from the tumbler through the drinking access without allowing leaking from the tumbler or the lid connection point.

With the lid in place, a reservoir cover 6 is lifted as shown in FIG. 2 using the ledge 65 to disengage securing pegs 62 from the peg recesses 26 and releasing the cover seal 64 from the lid 1. Visible in FIG. 1, the reservoir cover 6 of the preferred embodiment is hingedly affixed to the top lid member 2 of the lid 1 by hinges 61 on each side of the reservoir cover 6. Examples of alternative reservoir covers are illustrated in FIGS. 11-22. Once the reservoir cover 6 is open, such as shown in FIG. 2, the reservoir 12 can be filled with a substance through a reservoir hole, also called the filling port 22. The cover 6 is then closed and the lid is ready for use. The sealing created by a cover seal 64 around the filling port 22 must create a liquid-tight seal to prevent any leaking when the tumbler 7 is in use or being transported.

In the preferred embodiment, if the cover 6 is open then the drinking hole 20 is obstructed by the cover 6. When the reservoir cover 6 is open the cover seal 64 (see FIG. 10) will desirably stay affixed to the reservoir cover 6 such as by overmolding. In some alternative embodiments the seal could remain within the fill port opening. The cover seal 64 works by contacting the inner diameter of the filling port 22. Once the cover is closed, a single push of the actuating mechanism 5 will dispense a single, measured quantity of additive such as liquor. Additional button presses will increase the dose of additive to the beverage in the tumbler 7. The drinking hole 20 is freely accessible when the cover 6 is closed. The entire process of opening and closing the reservoir filling port 22 can be repeated without limitation.

Turning to FIG. 3, the preferred embodiment of the lid is shown in an exploded view according to one mode of manufacturing. As shown, the preferred embodiment may be manufactured by separating the lid 1 into two halves or portions. In this case of a preferred embodiment, the reservoir 12 is formed by the combination and cooperation of a top lid member 2 and a bottom lid member 3, plus the reciprocating sealing mechanism illustrated as a double piston 4 controlled by the actuating mechanism 5. Alternative modes of manufacturing that meet the objectives and limitations of the present invention will be apparent to those having skill in the art.

In this embodiment, the top lid member 2 is aligned with the bottom lid member 3 by the alignment of an upper drinking channel 21 and a lower drinking channel 31 and then the two lid pieces are sealed together by a water-tight sonic weld. In other embodiments, the top lid member and bottom lid member may be removably coupled together, heat sealed, or they may be constructed as a single unit such as through 3D printing. The top lid member 2 provides the filling port 22 access to the reservoir 12 after the assembly of the cover components. The cover seal 64 is affixed to the reservoir cover 6 and shaped to surround the opening of the filling port 22 then the reservoir cover 6 is attached to the top lid member 2 via the hinges 61 into hinge receiving holes 27 and securing pegs 62 into the peg recesses 26. In shape, the preferred embodiment bottom lid member 3 forms the base of the reservoir 12 and is slightly sloped inward (see FIGS. 7-9) toward the measuring tube 32 to urge the additives in the reservoir toward the open bottom 11 of the lid 1. With continuing reference to FIG. 3, the actuating mechanism 5 of the preferred embodiment comprises a button 51, a threading insert 52, a biasing member or spring 53, and a shaft seal 54 that are assembled into a button recess 24 and also attach to a support member or shaft 55 and the double piston 4 as shown in FIGS. 7-9. In the preferred embodiment, the shaft 55 is received through the center of the bottom lid member 3 and top lid member 2 while the double piston 4 remains within the bottom lid member 3. The top of the actuating mechanism 5 is visible in FIGS. 1 and 2, and the assembled components of the actuating mechanism of the preferred embodiment are visible in later figures. Finally, the gasket 8 is secured to the bottom lid member 3 at a seal ledge 34.

Additional detail of the upper portions of the lid 1 will be appreciated by referring to FIG. 4. FIG. 4 is an isolated view of the top lid member 2 of the preferred embodiment as exploded in FIG. 3. This view clearly shows the hinge receiving hole 27 and peg receiving hole 26 which are mirrored on the opposite side of the lid (not visible in FIG. 4). The button recess 24 is in the center of the lid; however, alternative embodiments may call for the button recess to be off-center (see FIGS. 11-18), around the circumference of the lid (see FIGS. 19-20), or to be located on the side of the exterior lid wall like a trigger mechanism (not shown). The reservoir filling port 22 of the preferred embodiment encompasses more than half of the top lid member 2 surface to aid the user seeking to fill the reservoir with additive. Opposite the reservoir filling port 22 there is a rectangular hole comprising the drinking hole 20. By referencing FIGS. 4-9, one will appreciate that the drinking hole 20 of the preferred embodiment has walls running through the top lid member 2 to create the upper drinking channel 21 for drinking or receiving a straw to sip fluid from the cup by the consumer. In alternative embodiments, the drinking access may simply allow unobstructed or optionally closeable access to the tumbler cavity 72 via the interior wall 71 of the tumbler 7. A first venting hole configuration is illustrated in FIGS. 4-5 where a venting hole 23 is opposite the drinking hole 20 and also communicates with a venting hole 33 within the lower lid 3 (see FIG. 5). An alternative vent configuration is shown in FIG. 10 illustrating a larger venting hole 23 created by modifying a wall in the lid top and providing a corresponding vent flap 66 added to complement the lid seal 64. When the reservoir cover 6 is closed, the vent flap 66 rests in venting hole 23 making a liquid tight seal. When the actuating mechanism 5 is activated by the user, venting occurs by the vent flap 66 moving past the venting hole 23 into the continuous pathway cylinder formed by the aligned upper venting hole 23 and lower venting hole 33, allowing air to flow down into cup 7. When the vent flap 66 is in the “venting” position it is also closing off the ability for air to vent out of reservoir venting hole 63. Finally, FIG. 4 illustrates a reservoir vent 28 of one embodiment which consists of a thin slit along the side of the top wall of the top lid member 2. This thin slit of the reservoir vent 28 permits the transfer of gas or air from the reservoir as the piston is depressed and may create a need to expel air as a result of the liquid transfer between sealed components.

FIG. 5 shows in isolation the bottom lid member 3 illustrated in the exploded view of FIG. 3. Similar to FIG. 4 above, here the lower drinking channel 31 and first embodiment of the lower lid venting hole 33 are visible and ready to be joined with the corresponding channels in the top lid member 2. More particularly important for the preferred embodiment is an alignment lip 35 visible in this view as surrounding the lower drinking channel 31. This bottom alignment lip 35 mechanically receives a top alignment lip 25 (see FIG. 8) to keep the top lid member 2 and bottom lid member 3 from rotating relative to one another until and unless the consumer chooses to separate them for cleaning. The sonic-welded alignment of this embodiment can be more clearly seen in the cross-sectional view illustrated in FIGS. 7-9. In alternative embodiments, the top lid member 2 and bottom lid member 3 may be heat sealed, glued, or manufactured as one unit. In still other embodiments, the single unit design may provide another or additional point of interior access for cleaning. FIG. 5 further shows there are two ledges, first ledge 36 and second ledge 34, extending from the exterior wall of bottom lid member 3. The first ledge 36 will rest at or near the top of the tumbler. The second ledge 34 will receive the gasket seal 8 (best shown in FIGS. 3 and 7-9).

FIG. 6 is an isolated view of the double piston 4 of the preferred embodiment. While functioning as the reciprocating sealing mechanism, the double piston 4 acts primarily to measure and disburse substances from the reservoir 12 to the tumbler 7. The double piston 4 is affixed to the actuating mechanism shaft 55 (see FIG. 3) via a through hole 45. In the preferred embodiment, the double piston is overmolded onto the shaft 55. An upper piston 41 is surrounded by an upper seal 42 and a lower piston 43 is surrounded by a lower seal 44. The upper and lower pistons, or piston seals may be formed of a type such as a wiper seal. In the preferred embodiment, the upper and lower pistons are vertically set apart at a distance so that when they are in place inside of the measuring tube 32, approximately 0.5 ounces of fluid will fill the space between the two pistons and the interior side wall 321. In some alternative embodiments, the distance will be modified to permit alternative metering quantities and the sizing of the measuring tube may also need to be adjusted in diameter or height. In other alternative embodiments described herein, the manner of measurement will take place in a manner commensurate with the disbursement module.

Through cross-sectional views, FIGS. 7-9 illustrate the movement of additive during operation of the device of the preferred embodiment. In each of these figures the device is shown in use, the first ledge 36 of the bottom lid member 3 is resting on the tumbler 7 and the friction fit of the gasket 8 within the interior wall 71 of the tumbler 7 is visible on each side. Further, the alignment of the top lid member 2 and bottom lid member 3 is confirmed by the alignment of the shared channels of the upper and lower drinking channels 21 and 31 and this version of the venting holes 63 (of cover 6), 23 (of top lid member 2), 33 (of bottom lid member 3) extending from the top of the lid through to the tumbler 7. FIG. 7 shows the device in its default, or resting state which is reflected by the spring 53 being extended. The button 51 is in a raised position and the double piston 4 is raised so that only the lower piston 43 is creating a seal within the interior side wall 321 of the measuring tube 32. The upper piston 41 is above the terminal end of the interior side wall 321 of the measuring tube 32 allowing stored additive 91 to spill into the measuring tube from the reservoir 12 (see FIG. 9).

Turning to FIG. 8, the button 51 is beginning to be depressed (such as by a user) which compresses the spring 53. The pressure moves the shaft 55 which in turn begins to move the upper piston 41 and the lower piston 43 of the double piston 4. FIG. 8 illustrates that the downward force of the button 51 also causes the shaft 55 and double piston 4 to move down. In FIG. 8 the button 51 has been depressed halfway to show both pistons are now creating a double seal on either end of the measuring tube 32. The upper piston 41 is preventing more fluid from the reservoir 12 from being transferred to the measuring tube 32 and the lower piston 43 is preventing any additive from moving into the tumbler 7. FIG. 8 illustrates that a preferred quantity of metered additive 92 has been trapped between the upper piston 41 and the lower piston 43. At the same time, the double piston is also keeping the metered additive 92 from escaping back into the reservoir 12 or into the tumbler 7.

Finally, when the button 51 is fully depressed as shown in FIG. 9, the lower piston 43 of the double piston 4 is forced to exit an open bottom 11 of the measuring tube 32. When the bottom of the bottom lid member 3 is opened, the metered additive 92 shown trapped in FIG. 8 is released or spilled into the tumbler 7 as illustrated by the lines 93 in FIG. 9. The upper piston 41 remains in the measuring tube 32 and prevents additional stored additive 91 from being released from the reservoir 12. This final stage of an additive (the metered additive 92) being transferred from one storage reservoir (the space between the upper and lower pistons 41 and 43) to another reservoir (the tumbler cavity 72) is visible in FIG. 9.

The preferred embodiment calls for the lid to be separated into two portions to make for easier molding and assembly. Cleaning of the exterior is easily accomplished and cleaning of the reservoir and measuring chamber areas is easily accomplished by access to the reservoir cover 6 and the actuating mechanism which will allow flushing of the reservoir and chamber areas. For alternative embodiments, when the lid is formed as a single unit, cleaning is similarly accomplished. Removal of the double piston will permit more thorough cleanings.

The preferred embodiment uses a vertical double plunger piston as the reciprocating sealing mechanism; however, any sealing mechanism that will alternatively seal a chamber entrance and a chamber exit may be employed for the preferred embodiment. In particular, a retractable sealing mechanism may have particular utility as may a ratcheting or fanning filter shaped seal that articulates across the opening according to the objectives of the present invention.

This embodiment of a novel lid for capping a tumbler/cup secures to the top of insulated tumbler and has a reservoir to store and repeatedly dispense measured quantities from the reservoir into the interior of the tumbler. Quantities of liquid are measured and dispensed via the cooperation of an upper and lower wall of a piston pump which creates an axial holding chamber when the upper and lower walls alternatively seal a measuring chamber. The upper seal of the piston creates the floor of the reservoir when the actuating mechanism is depressed. In the preferred embodiment, the measuring chamber is a cylindrical tube but any shape that will meet the objectives of the present invention is intended and considered within the knowledge of one skilled in the art. When the measuring chamber is cylindrical then the piston and wiper seals would also be cylindrical. The interior wall of the metering tube interfaces with the two radially extending horizontal walls of the double piston. Each horizontal wall is circumscribed by a cylindrical wiper seal. The upper seal of the piston pump is shaped to surround the disk shape of the upper, substantially horizontal wall. The upper seal alternatively extends into the reservoir to create a spillway in the measuring chamber and then the upper seal descends into the measuring chamber when a button on the top of the lid is pressed by a user. The lower seal of the piston pump will also be shaped to surround the disk shape of the lower, substantially horizontal wall and alternatively creates the bottom of the measuring chamber when the upper seal is in the reservoir and then when the button is depressed the lower seal extends into the tumbler cavity 72 of the tumbler and spills the contents from the measuring chamber into the tumbler. As the lower seal is spilling the contents of the measuring chamber into the tumbler the upper seal is partitioning the reservoir contents to remain within the reservoir.

The release of the button automatically returns the piston pump to the upper, resting position which once again sequesters the reservoir contents from the tumbler contents. The cap/lid has a filling access to allow the reservoir to be unlimitedly refilled. The cap has a drinking access which permits the tumbler to be used as normal without the contents of the tumbler coming into contact with the contents of the reservoir when the tumbler is tipped for drinking.

The capping lid of the preferred embodiment of the present invention comprises a refillable reservoir section which is located within the lid and above the measuring channel. The measuring channel has a proximal aperture and a distal aperture which are selectively blocked by the reciprocating sealing mechanism. The actuating mechanism, mechanically joined with the reciprocating sealing mechanism, controls the movement of the reciprocating sealing mechanism. A drinking access is formed by a wall that traverses the various portions of the lid and prevents the stored liquid from contacting the substance of the beverage container due to normal drinking functions of the tumbler. The drinking access should desirably be provided with its own cover to allow selective closing of the tumbler cavity. The combination of the refillable reservoir section and the reciprocating sealing mechanism cooperate to receive and enclose an additive within the lid. The additive may be any liquid or powder such as flavoring, syrup, oil, herbal supplements, mineral supplements, vitamin supplements, dietary supplements, honey, creamer, liquor, spirits, or similar substances that are normally added to a larger quantity of liquid. The preferred additive used in this lid will be liquid in nature. The invention will be particularly useful for adding a quantity of hard alcohol to a mixer to form a cocktail while on the go. The larger quantity of liquid is typically of a type such as soda, coffee, juice, water, sparkling water, or tea. The lid permits the disbursement into the beverage container of additive from the distal aperture of the measuring channel in measured and repeatable quantities.

The lid of the present invention is desirably constructed of a resin that is substantially translucent or transparent. The use of transparent manufacturing materials will allow a user to observe when the contents of the reservoir are full, empty, getting low, or being disbursed. The lid is constructed of resilient materials and is intended to have longevity so that it can be reused for an undefined, indefinite period. The lid can be coupled to various containers and repeated attachment is desirable and intended. The reservoir may be repeatedly accessed, emptied, refilled and cleaned.

The button, shaft, spring, seals, threading inserts, and various other components of the preferred embodiment may be selected from conventional parts available on the market. Other components will be custom molded and overmolded before the lid is assembled. The preferred embodiment the double piston is overmolded but a commercially available rigid plastic double piston could be adopted with removable or affixed wiper seals. The sizing of the button, the button recess, the shaft, the spring, and other components may vary depending on the size of the lid. The depth, size and shape of the metering tube will impact the dimensions of these actuating mechanism parts. The height of the push button is dependent on the clearance needed to move the partition created by the double seals of the reciprocating sealing mechanism.

The reciprocating sealing mechanism of the preferred embodiment selectively seals in the following configurations:

• • blocking of the distal aperture of the measuring channel simultaneously with the unblocking of the proximal aperture of the measuring channel,
  • simultaneous blocking of the proximal aperture of the measuring channel and the distal aperture of the measuring channel,
  • blocking of the proximal aperture of the measuring channel simultaneously with the unblocking of the distal aperture of the measuring channel, and
  • the various stages in between these enumerated examples.

In the preferred embodiment of the present invention, when the reciprocating sealing mechanism seals the distal aperture it also unseals the proximal aperture, allowing up to a specific volume of additive to enter the measuring tube or channel from the refillable reservoir. When the reciprocating sealing mechanism moves to seal the proximal aperture it also seals the distal aperture allowing up to a specific quantity of additive to enter and be housed in the measuring channel. When the reciprocating sealing mechanism moves to seal the proximal aperture it also unseals the distal aperture allowing up to the specific quantity of additive to exit the measuring channel into the beverage container. Before the additive is transferred into the beverage compartment it is sealed off from the lid reservoir by the reciprocating sealing mechanism. The actuating mechanism moves the reciprocating sealing mechanism to block passage of the additive from the reservoir into the measuring channel and unblock the flow from the measuring channel to the beverage container.

The default position of the reciprocating sealing mechanism allows additive to pass into the measuring channel from the refillable reservoir. The actuating mechanism automatically returns to rest in a default position which seals the lid contents from the beverage container. When the distal aperture of the measuring channel is sealed and the proximal aperture of the measuring channel is unsealed, the measuring channel fills with up to a specific quantity of additive so long as there are sufficient contents available from the reservoir. When the proximal aperture of the measuring channel is closed, the refillable reservoir is also closed and the specific quantity of additive is disbursed into the beverage container. When the distal aperture of the measuring channel is sealed, the measuring channel is in fluid communication with the reservoir. When the proximal aperture of the measuring channel is sealed, the measuring channel is in fluid communication with the beverage container.

The specific quantity measured by the lid can vary depending on the size of the lid and the desired function for the lid. Insulated containers take on a wide range of sizes and volumes so having lids formed of a similarly wide range of sizes is anticipated. Growler-sized HydroFlask™ waterbottles may call for a lid having an interior volume of many more ounces than a 20-ounce Yeti® tumbler cup. The preferred embodiment will have height dimensions of about 3 inches from the base of the measuring chamber to the top of the button in the default position, alternative heights may be used to increase or decrease the reservoir capacity but would encroach upon the volume of the tumbler or cause the lid to protrude from the top of the tumbler further. One preferred embodiment lid, sized to fit a tumbler with a 30 to 35-ounce capacity, has a top diameter of approximately 4 inches across (4.4 inches when the lift tab is included) and is 3 inches in height. The bottom lid member 3 (reservoir lower wall) inclusive of the measuring chamber is approximately 2.3 inches in height and approximately 1.75 inches would be recessed into the tumbler. For a smaller preferred embodiment of the lid, sized to fit a tumbler between 20 and 24 ounces in size, the diameter of the lid top member 2 is approximately 3.5 inches and the height of the entire lid accessory is approximately 3 inches.

A conventional tumbler typically holds anywhere from 12 to 35 ounces of liquid beverage. For these quantities, the cap reservoir will have a volume of 1-7 ounces (about 30 mL-100 mL) with the preferred volume being between 4 and 6 ounces for tumblers/cups between 20 and 35-ounces in size. The measuring tube may have variation in size commensurate with the tumbler's volume but such variation is not mandatory since repeated actuation will result in repeated dosing of additive into the tumbler cavity. For a typical tumbler, the lid will meter and dispense an additive at a rate of approximately ½ ounce (about 15 milliliters) per button press. Thus, when the button is pressed twice, 1 ounce (about 30 mLs) of additive will enter the tumbler's interior cavity, and so forth. At a minimum, after the button has been pressed twice, the reservoir will still hold at least one ounce of additive which will permit another full use of the additive such as may be desired when a small tumbler is refilled with a primary beverage.

The tumbler is refilled by removing the lid from the tumbler. In most cases this will require the user to ease the lid away from the tumbler in order to release the sealing gasket's hold against the tumbler's interior wall. The primary beverage is refilled in the tumbler's cavity and then the lid is replaced onto the tumbler. Once the sealing gasket is again secure, the user presses the button to once again dispense the secondary substance (additive) from the reservoir into the tumbler cavity. If this use partially depletes or completely exhausts the supply of the additive in the reservoir then the user will open the reservoir cover 6 and refill the reservoir by pouring additional additive through the reservoir filling port 22.

The lower wall of the refillable reservoir section is shaped to descend toward the measuring channel in order to allow additive to spill from the reservoir when the proximal aperture of the measuring channel is unsealed. The proximal aperture of the measuring channel, and thus the reservoir's floor is sealed before additive spills into the beverage container so that the amount of additive is controlled and the reservoir's contents remain segregated and secure.

The present invention for a beverage container lid will find use with most to all standard or conventional, reusable tumblers and cups having a beverage compartment wherein the beverage container further comprises a bottom wall, an annular wall having an exterior and an interior, and a top opening. The present invention attaches to cover the top opening via an interference fit seal on the interior of the axially extending wall; however, other means of coupling such as screwing or snapping as well as covering the top opening via a seal with the exterior wall are known in the art and, because they may be useful with some conventional container models, are considered within this disclosure.

The lid requires a reservoir having a filling port and a measuring tube. The filling port is reclosable via a door or similar access point. Various door access and cover options are available and three are illustrated. The preferred access and hatch is shown in FIGS. 1-10, an alternative is shown in FIGS. 11-20, and another example of an access port is shown in FIGS. 21-22. The filling port is in fluid communication with the reservoir and measuring tube. The lid also calls for a drinking channel having a vertical wall partitioning the drinking channel from the lid reservoir, the filling port, and the measuring tube. The drinking channel should further allow access for consuming the contents of the beverage compartment of the tumbler. The lid is repeatedly coupled to the beverage container opening while the lid reservoir and the sealing mechanism cooperate to receive and enclose an additive within the beverage container lid. The actuating mechanism of the present invention is controlled by a user to move the sealing mechanism to release the additive into the measuring tube and then into the beverage compartment. In the preferred embodiment, the actuating mechanism comprises a rigid button which cooperates with a spring.

Alternative configurations for a dispenser are known in the art and include mechanisms such a depressible bulb style dispenser, a press cylinder style dispenser, a plunger atop the lid, a flexible dome, or a trigger atop or alongside the lid. Some alternative configurations capable of completing the objectives of the present invention can be seen in FIGS. 11-22. FIGS. 11-14 specifically show a first alternative embodiment where the filling port 22 has been covered by a removable twist lock cover 56 with integrated actuating button 51 and can be opened to allow filling access to the reservoir 12. The perspective view in FIG. 11 illustrates the alternative lid 1 design in place on a tumbler 7. The cross-sectional view in FIG. 12 shows the integration of the fill port twist lock cover 56 and the dispensing mechanism. FIGS. 13 and 14 illustrate the reciprocating dispensing mechanism similar to the preferred embodiment. With the actuating mechanism in a resting position as shown in FIG. 13, additive partially fills the measuring channel. When the actuating mechanism is fully engaged as shown in FIG. 14, metered additive contents are dispensing into the tumbler 7. Drain paths 37 such as those depicted in FIGS. 13 and 14 may be added to various embodiments to allow for stored additive fluid 91 (see FIG. 13) to drain from the upper section of the reservoir 2 into the measuring tube 32.

A bulb style plunger dispensing mechanism is illustrated in FIGS. 15 and 16. Similar to a primer on a carburetor, the bulb-style dispenser creates a vacuum in the bulb after it is depressed. The liquid from the upper chamber, or reservoir, is drawn into the bulb through an inlet check valve with the vacuum force. The liquid drawn into the bulb is then expunged into the tumbler/cup through the outlet check valve when the bulb is pressed again. This bulb style dispenser is similar to a purge pumping mechanism comprised of a purge bulb, an inlet check valve, and an outlet check valve. As described, the depression of the bulb opens the outlet check valve and air or additive is forced through the outlet check valve. When the purge bulb is released, the outlet check valve closes and the inlet check valve opens to draw additive from the reservoir into the bulb which acts as a metering chamber. A vacuum created by expanding the bulb draws the additive from the reservoir through the tubes and into the purge bulb before it is dispensed into the tumbler. The perspective view of this second alternative embodiment illustrated in FIG. 15, shows a fill port with a twist lock cover 56 similar to the previous embodiment but in this case separate from the metering and dispensing control mechanism. In this embodiment, the actuating mechanism is a style of plunger called a bulb 57. The cross-sectional view of FIG. 16 illustrates one mechanism by which additive would be dispensed from the reservoir 12 to the tumbler 7. In this embodiment, metering occurs via the bulb dispensing mechanism. Upon depression of bulb 57, liquid additive (not shown) from the reservoir 12 enters an intake 101 and travels through a one way valve 100, down an output channel 103 and exits an outlet tube 102 into the tumbler 7. Alternative versions of this embodiment may call for the movement of the additive with the assistance of a pneumatic pumping mechanism.

FIGS. 17-18 show a plunger-style actuating mechanism which is coupled with tubing and a measuring tube substantially above the reservoir 12. Similar to a bulb style plunger shown in FIGS. 15-16, this alternative embodiment draws liquid from the upper chamber through an inlet check valve when the plunger is drawn upward. It is then expunged through the outlet check valve and into the lower chamber when it is pressed down. This embodiment is similar to one available commercially as a primer plunger from a company named DAPCO. As illustrated in FIG. 18, in this third alternative embodiment, the intake 101 is disposed within the reservoir 12. Check valves modulate when liquid enters the measuring chamber tube after pressure is applied to pull the plunger up and expand a spring. When pressure is applied downward toward the lid and tumbler, the contents measured into the plunger chamber 32 are expelled via the output tube 102. Thus, the pumping action via a plunger 58 moves liquid additive through the tubing, into the measuring plunger chamber 32 until it exits the outlet tube 102 into the tumbler 7.

A fourth embodiment of the present invention calls for a press cylinder style, slidable interface between the first, top portion of the lid and the second, bottom portion of the lid, or a similar coupling with a custom tumbler and the lid. This embodiment uses the pressure generated with a downward push on the entire top portion of the lid unit to meter a portion of the liquid stored in the upper chamber through to the lower chamber. The pressure-activated check valve at the lower portion of the upper chamber only opens at a pre-set pressure so that not all of the upper chamber liquid is allowed into the lower chamber upon a single press. The spring returns the top to the upper (or ready) position to be pushed again. As shown in FIGS. 19-20, a lid circumference 59 acts as the press cylinder style actuating mechanism that causes a measured additive to dispense into the larger, beverage reservoir. As schematically illustrated in FIG. 20, pressure generated by a downward push compresses a top lid member 2 which slidably interfaces with a bottom lid member 3. The movement in the direction of the arrows produces a reciprocating movement in the larger body of the lid. The spring 53 once again holds the lid in a default position which again securely segregates the reservoir 12 and tumbler contents into their respective chambers. When the lid circumference 59 is depressed, the spring 53 compresses and moves the bottom of the reservoir until the 100 (intake check valve 100) accepts additive from the reservoir 12 and the additive exits the output 102. This disclosure has detailed a preferred filling port access which covers the majority of the top of the lid. However, alternatives such as the twist cover shown in FIGS. 11-20 will have utility in certain applications.

Another alternative embodiment for the present invention is illustrated in FIGS. 21-22. A lid 1 with a drinking channel 21 and a reservoir cavity 12 is placed upon a tumbler 7. An actuating mechanism button 5 dispenses additive from the reservoir 12 into the cup 7. A filling port 22 permits access to the reservoir 12 and has a cover 6. In FIG. 21, the hinged reservoir cover is shown in an opened position. In FIG. 22, shown from a different perspective, the alternative embodiment for a hinged filling port reservoir cover is shown in a closed position. Aspects of the hinge 61 about which the alternative filling port cover 6 articulates is shown through these two perspective views.

Through the use of this metered lid for a beverage container having a distal bottom, an annular wall, and a proximal opening, a measured quantity of liquid additive is dispensed into the beverage container. In the preferred embodiment, the dispensing occurs through a piston actuator with horizontal seals that translate the liquid from the reservoir into an axial holding chamber and then release the liquid when the bottom seal passes the axial chamber opening.

When using the FlasKap branded, preferred embodiment of the present invention, the following steps are followed:

• • 1. The user puts the lid device down in the tumbler/cup and in the same manner as if installing a standard lid on the cup. The device is secured on the cup by friction via a gasket.
  • 2. The user opens the fill cap located on the top of the lid and fills the reservoir full of liquid, in this example liquor or spirits, also called booze. The fill cap is located on the side opposite of the drinking hole. The typical reservoir holds approximately 5-7 ounces of liquor.
  • 3. The user empties liquor out of the device down into the cup by pushing the button down in the center of the lid. Each time the button is pushed approximately ½ ounce of liquor flows down into the cup. The user can choose how much is emptied down into the cup by the number of pushes made to the button. The metering device works because in its “resting” position liquor is allowed to flow down into the measuring chamber located at the bottom of the reservoir but cannot escape into the cup cavity. The chamber consists of a cylinder shape with open ends. One end opens to the reservoir and the other end opens down into the cup. The piston which consists of two disks with gaskets around the perimeter keep the liquor from flowing until the button is pushed down. When the button is pushed down the upper disk will seal off liquor from coming into the chamber from the reservoir while the bottom disk will protrude out past the end of the chamber allowing the liquor to flow by gravity down into the cup. When the user then lets off the button the coil spring located at the piston under the button brings the piston back up into its “resting” position and the liquor is allowed to fill the chamber back up and the bottom of the disk seals off the liquor from flowing down into the cup.

The commercial product branded as the FlasKap lid is designed to be a multi-functional tumbler lid and beverage insulator +flask +shot dispenser that is spill and splash resistant with precision cutting to fit a user's stainless-steel travel tumbler. The FlasKap lid keeps liquids in and dust out while a user is at work, traveling, or exercising. The FlasKap lid works like a regular lid in that it is insulated to keep ice in a cup longer or keep a beverage hot longer and it will desirably incorporate a drinking port cover for travel. While not every stainless-steel drink tumbler is the same, the FlasKap lid provides universal design to allow versatility so that this lid fits nearly all tumblers on the market. The FlasKap lid is particularly designed for use on Yeti®, Ozark Trail™, Grizzly™, Boss™, Sic™, Reduce®, Rtic® and so much more. This lid is dishwasher safe and made with premium, BPA-free plastic. The FlasKap lid can safely be added to the top rack of a dishwasher to wash along with other drinkware and kitchen items. The design is discreet, and from the top looks like any other lid on the market yet the addition of this lid makes a tumbler different and better than other tumblers. This lid permits the user to customize the tumbler already owned. The FlasKap lid is portable and convenient, eliminating the need for an additional container (bottle, flask, shot glass).

It is further intended that any other embodiments of the present invention which result from any changes in application or method of use or operation, method of manufacture, shape, size, or material which are not specified within the detailed written description or illustrations contained herein yet are considered apparent or obvious to one skilled in the art are within the scope of the present invention.

Claims

1. A lid positionable at an open upper end portion of a beverage container having an interior cavity for holding a beverage, comprising: a refillable reservoir chamber having an upper end portion and a lower end portion, the reservoir chamber being sized to hold a drink additive;a measurement chamber having an upper end portion and a lower end portion, at least a portion of the measurement chamber being positioned below the reservoir chamber with the lower end portion of the reservoir chamber in fluid communication with the upper end portion of the measurement chamber;a plunger having an upper seal and a lower seal; andan actuator operably connected to the plunger to move the plunger between first, second and third positions, (a) in the first position the upper seal being at least partially out of sealing contact with the reservoir chamber and the lower seal being in sealing contact with the measurement chamber to provide fluid communication between the reservoir chamber and the measurement chamber for permitting drink additive in the reservoir chamber to flow into the measurement chamber but not out the lower end portion of the measurement chamber,(b) in the second position the upper seal being in sealing contact with the measurement chamber and the lower seal being in sealing contact with the measurement chamber for sealing a first quantity of the drink additive between the upper seal and the lower seal, and(c) in the third position the upper seal being in sealing contact with the measurement chamber and the lower seal being at least partially out of sealing contact with the measurement chamber to provide fluid communication between the measurement chamber and the interior cavity of the beverage container for permitting the first quantity of drink additive to flow into the interior cavity of the beverage container.

2. The lid of claim 1, wherein when the plunger is in the first position the upper seal is within the reservoir chamber and the lower seal is within the measurement chamber, when the plunger is in the second position the upper seal and the lower seal are within the measurement chamber, and when the plunger is in the third position the upper seal is within the measurement chamber and the lower seal is out of the measurement chamber.

3. The lid of claim 1, wherein the upper seal and the lower seal each have a first transverse cross-sectional size and shape and an outer perimeter seal portion, the reservoir chamber has a sidewall defining a second transverse cross-sectional size and shape interior opening different from the first transverse cross-sectional size and shape, and the measurement chamber has a sidewall defining a third cross-sectional size and shape interior opening sufficiently the same as the first transverse cross-sectional size and shape, such that when the plunger is in the first position the upper seal outer perimeter seal portion is at least partially out of sealing contact with the reservoir chamber sidewall and the lower seal outer perimeter seal portion is in sealing contact with the measurement chamber sidewall, and such that when the plunger is in the second position the upper seal outer perimeter seal portion and the lower seal outer perimeter seal portion are in sealing contact with the measurement chamber sidewall.

4. The lid of claim 1, wherein the plunger has a support member with an upper end portion and a lower end portion, the upper seal being connected to the support member toward the upper end portion of the support member and the lower seal being connected to the support member toward the lower end portion of the support member, the upper seal and lower seal being spaced apart to define a first volume therebetween when the plunger is in the second position, the first volume determining the size of the first quantity of the drink additive.

5. The lid of claim 4, wherein the upper seal is fixedly connected to the support member toward the upper end portion of the support member and the lower seal is fixedly connected to the support member toward the lower end portion of the support member.

6. The lid of claim 4, wherein the lid includes an upper lid portion having with an aperture through which the upper end portion of the support member extends with the upper seal located below the upper lid portion.

7. The lid of claim 6, wherein the lid includes a seal positioned to seal between the upper lid portion and the upper end portion of the support member to prevent fluid flow through the aperture.

8. The lid of claim 6, wherein the upper lid portion includes a upwardly opening recess having a lower end wall in which the aperture is located with the upper end portion of the support member extending upward into the recess, and a manually operable button positioned at least partially within the recess and operably connected to the upper end portion of the support member, with the downward movement of the button within the recess moving the plunger sequentially between the first, second and third positions.

9. The lid of claim 8, wherein the actuator includes a biasing member positioned at least partially within the recess and applying a biasing upward return force on at least one of the button or the upper end portion of the support member extending upward into the recess to return the plunger to the first position when an actuating force is removed from the button.

10. The lid of claim 9, wherein the upper end portion of the support member has an upper portion extending through the aperture with a first cross-sectional size sized to pass through and reciprocate within the aperture, and a lower portion positioned below the lower end wall of the recess with a second cross-sectional size too large to pass upward through the aperture, when the plunger is in the first position further upward movement of the plunger by the biasing member being prevented by the lower portion of the upper end portion of the support member engaging the lower end wall of the recess.

11. The lid of claim 1, wherein actuator includes a manually operable button operably connected to the plunger to move the plunger between the first, second and third positions.

12. The lid of claim 1, wherein the actuator includes a biasing member applying a biasing return force on the actuator to return the plunger to the first position when an actuating force is removed from the actuator.

13. The lid of claim 1, wherein the lid further includes an outer body wall sized and shaped to removably fit at least partially within the open upper end portion of the beverage container.

14. The lid of claim 13, wherein outer body wall downwardly tapers inwardly, and the lid further includes an outer seal extending about the outer body wall and positioned to provide a fluid-tight seal between the outer body wall and the open upper end portion of the beverage container when the lid is at least partially within the open upper end portion of the beverage container.

15. The lid of claim 1, wherein the reservoir chamber has a filling port sized for pouring of drink additive therethrough.

16. The lid of claim 15, wherein the reservoir chamber has a filling port cover, the cover being selectively movable between a position closing the filling port and a position opening the filling port to permit drink additive to be poured into the reservoir chamber through the filling port.

17. The lid of claim 1, further including a drink aperture in fluid communication with the interior cavity of the beverage container for drinking contents of the beverage container when the lid is at least partially positioned within the open upper end portion of the beverage container.

18. The lid of claim 17, further including a drink channel having an upper end portion in fluid communication with the drink aperture and a lower end portion extending downward into the interior cavity of the beverage container in fluid communication therewith when the lid is at least partially positioned within the open upper end portion of the beverage container, the drink channel defined at least in part by an outer wall portion of the reservoir chamber.

19. The lid of claim 18, wherein the lower end portion of the drink channel is defined at least in part by an outer wall portion of the measurement chamber.

20. The lid of claim 1, wherein the lid includes an upper lid portion and a lower lid portion, at least a portion of the actuator being supported by and located in the upper lid portion, and at least a portion of the reservoir chamber and the measurement chamber being located within the lower lid portion.

21. The lid of claim 20, wherein the upper lid portion has an alignment portion and the lower lid portion has an alignment portion, the alignment portions of the upper and lower lid portions being in engagement when the upper and lower lid portions are in proper alignment.

22. The lid of claim 21, wherein the alignment portions of the upper and lower lid portions when in engagement prevent relative rotational movement between the upper lid portion and the lower lid portion.

23. The lid of claim 20, wherein the upper lid portion includes an actuator chamber sealed off from the interior cavity of the beverage container, the reservoir chamber and the measurement chamber to prevent drink additive and beverage within the interior cavity of the beverage container from entering the actuator chamber, the actuator includes a manually operable button positioned at least partially within the actuator chamber.

24. The lid of claim 23, wherein the actuator chamber has an aperture through which an upper end portion of the plunger extends with the upper seal and the lower seal located below the upper lid portion and in the lower lid portion when the plunger is in the first and second positions.

25. The lid of claim 1, wherein the lid includes a lift tab positioned outward of the beverage container when the lid is at least partially within the open upper end portion of the beverage container, whereby a user may grip and lift upward on the lift tab to assist in removal of the lid from the beverage container.

26. A lid positionable at an open upper end portion of a beverage container having an interior cavity for holding a beverage, comprising: a reservoir chamber having an upper end portion and a lower end portion, the reservoir chamber being sized to hold a drink additive;a measurement chamber having an upper end portion and a lower end portion, the lower end portion of the reservoir chamber being in fluid communication with the upper end portion of the measurement chamber;an upper seal;a lower seal; andan actuator operably connected to the upper seal and the lower seal to move the upper seal and lower seal between first, second and third positions, (a) in the first position the upper seal being at least partially out of sealing contact with the reservoir chamber and the lower seal being in sealing contact with the measurement chamber to provide fluid communication between the reservoir chamber and the measurement chamber for permitting drink additive in the reservoir chamber to flow into the measurement chamber but not out the lower end portion of the measurement chamber,(b) in the second position the upper seal being in sealing contact with the measurement chamber and the lower seal being in sealing contact with the measurement chamber for sealing a first quantity of the drink additive between the upper seal and the lower seal, and(c) in the third position the upper seal being in sealing contact with the measurement chamber and the lower seal being at least partially out of sealing contact with the measurement chamber to provide fluid communication between the measurement chamber and the interior cavity of the beverage container for permitting the first quantity of drink additive to flow into the interior cavity of the beverage container.

27. The lid of claim 26, wherein when in the first position the upper seal is within the reservoir chamber and the lower seal is within the measurement chamber, when in the second position the upper seal and the lower seal are within the measurement chamber, and when in the third position the upper seal is within the measurement chamber and the lower seal is out of the measurement chamber.

28. The lid of claim 26, wherein the reservoir chamber is size to hold a volume of drink additive at least twice as large as the measurement chamber.

29. The lid of claim 26, wherein the ration of the volume of the reservoir chamber to the volume of the measurement chamber is in the range of 1:5 to 1:12.

30. A lid positionable at an open upper end portion of a beverage container having an interior cavity for holding a beverage, comprising: a reservoir chamber sized to hold a drink additive;a measurement chamber in fluid communication with the reservoir chamber, and when the lid is at least partially within the open upper end portion of the beverage container, the measurement chamber is in fluid communication with the interior cavity of the beverage container;at least one seal; andan actuator operably connected to the at least one seal to move the at least one seal between first, second and third positions, (a) in the first position the at least one seal configured to provide fluid communication between the reservoir chamber and the measurement chamber for permitting drink additive in the reservoir chamber to flow into the measurement chamber but not between the measurement chamber and the interior cavity of the beverage container,(b) in the second position the at least one seal configured to confine a first quantity of drink additive in the measurement chamber and maintain the first quantity of the drink additive separate from the remainder of the drink additive in the reservoir chamber, and(c) in the third position the at least one seal configured to permit the first quantity of drink additive to flow into the interior cavity of the beverage container while preventing additional drink additive in the reservoir chamber to flow into the interior cavity of the beverage container.

31. The lid of claim 30, wherein the at least one seal includes an upper seal and a lower seal, with the space therebetween defining a volume within which the first quantity of drink additive is confined when the at least one seal is in the second position.

32. A lid positionable at an open upper end portion of a beverage container having an interior cavity for holding a beverage, comprising: a reservoir chamber having an outflow opening and a reservoir wall portion therebetween, the reservoir chamber being sized to hold a drink additive;a measurement chamber having an inflow opening and an outflow opening with a measurement chamber wall therebetween, the outflow opening of the reservoir chamber being in fluid communication with the inflow opening of the measurement chamber;a first seal;a second seal; andan actuator operably connected to the first seal and the second seal to move the first seal and second seal between first, second and third positions, (a) in the first position the first seal being at least partially out of sealing contact with the reservoir chamber wall portion and the second seal being in sealing contact with the measurement chamber wall portion to provide fluid communication between outflow opening of the reservoir chamber and the inflow opening of the measurement chamber for permitting drink additive in the reservoir chamber to flow into the measurement chamber through the inflow opening of the measurement chamber but not out the outflow opening of the measurement chamber,(b) in the second position the first seal being in sealing contact with the measurement chamber wall portion and the second seal being in sealing contact with the measurement chamber wall portion for sealing a first quantity of the drink additive between the first seal and the second seal out of fluid communication with the outflow opening of the reservoir chamber and out of fluid communication with the inflow and outflow openings of the measurement chamber, and(c) in the third position the first seal being in sealing contact with the measurement chamber wall portion and the second seal being at least partially out of sealing contact with the measurement chamber wall portion to provide fluid communication between the measurement chamber and the interior cavity of the beverage container and permitting the first quantity of drink additive to flow into the interior cavity of the beverage container through the outflow opening of the measurement chamber.

33. A method of dosing a drink additive from a lid positioned at an open upper end portion of a beverage container having an interior cavity, the lid using a refillable reservoir chamber having an upper end portion and a lower end portion and a measurement chamber having an upper end portion and a lower end portion, the lower end portion of the reservoir chamber being in fluid communication with the upper end portion of the measurement chamber, comprising: positioning the drink additive in the reservoir chamber;positioning an upper seal in the reservoir chamber out of sealing contact with the reservoir chamber and an lower seal in the measurement chamber in sealing contact with the measurement chamber to provide fluid communication between the reservoir chamber and the measurement chamber and permit at least a portion of the drink additive in the reservoir chamber to flow into the measurement chamber but not out the lower end portion of the measurement chamber,next positioning the upper seal in the measurement chamber in sealing contact with the measurement chamber while the lower seal remains in the measurement chamber in sealing contact with the measurement chamber to seal a first quantity of the drink additive sealed in the space between the upper seal and the lower seal; andnext positioning the lower seal at least partially out of sealing contact with the measurement chamber while the upper seal remains in sealing contact with the measurement chamber to provide fluid communication between the measurement chamber and the interior cavity of the beverage container and permit the first quantity of drink additive to flow into the interior cavity of the beverage container while preventing additional drink additive in the reservoir chamber from entering the space between the upper seal and the lower seal.

34. A method of dosing a drink additive from a lid positioned at an open upper end portion of a beverage container having an interior cavity, the lid using a refillable reservoir chamber sized to hold a drink additive and a measurement chamber in fluid communication with the reservoir chamber, the measurement chamber being in fluid communication with the interior cavity of the beverage container when the lid is at least partially within the open upper end portion of the beverage container, the lid further including at least one seal, comprising: positioning the drink additive in the reservoir chamber;first positioning the at least one seal to provide fluid communication between the reservoir chamber and the measurement chamber and permit drink additive in the reservoir chamber to flow into the measurement chamber while preventing drink additive in the reservoir chamber to flow into the interior cavity of the beverage container;second positioning the at least one seal to confine a first quantity of drink additive in the measurement chamber and maintain the first quantity of the drink additive separate from the remainder of the drink additive in the reservoir chamber while preventing the first quantity of drink additive in the measurement chamber and drink additive in the reservoir chamber to flow into the interior cavity of the beverage container; andthird positioning the at least one seal to permit the first quantity of drink additive in the measurement chamber to flow into the interior cavity of the beverage container while preventing additional drink additive in the reservoir chamber to flow into the interior cavity of the beverage container.

35. A method of dosing a drink additive from a lid positioned at an open upper end portion of a beverage container having an interior cavity, the lid using a refillable reservoir chamber having a first opening and a second opening with a reservoir wall portion therebetween and a measurement chamber having a first opening and a second opening with a measurement chamber wall therebetween, the second opening of the reservoir chamber being in fluid communication with the first opening of the measurement chamber, comprising: positioning the drink additive in the reservoir chamber;positioning a first seal in the reservoir chamber out of sealing contact with the reservoir chamber wall portion and a second seal in the measurement chamber in sealing contact with the measurement chamber wall portion to provide fluid communication between the second opening of the reservoir chamber and the first opening of the measurement chamber to permit at least a portion of the drink additive in the reservoir chamber to flow into the measurement chamber through the first opening of the measurement chamber but not out the second opening of the measurement chamber;next positioning the first seal in the measurement chamber in sealing contact with the measurement chamber wall portion while the second seal remains in the measurement chamber in sealing contact with the measurement chamber wall portion to seal a first quantity of the drink additive sealed in the space between the first seal and the second seal out of fluid communication with the first and second openings of the reservoir chamber and out of fluid communication with the first and second openings of the measurement chamber; andnext positioning the second seal at least partially out of sealing contact with the measurement chamber wall portion while the first seal remains in sealing contact with the measurement chamber wall portion to provide fluid communication between the measurement chamber and the interior cavity of the beverage container and permit the first quantity of drink additive to flow into the interior cavity of the beverage container through the second opening of the measurement chamber, while preventing additional drink additive in the reservoir chamber from entering the space between the upper seal and the lower seal.

36. A method of dosing a drink additive from a lid positioned at an open upper end portion of a beverage container having an interior cavity, the lid using a reservoir chamber having an outflow opening and a measurement chamber having an inflow opening and an outflow opening, the outflow opening of the reservoir chamber being in fluid communication with the inflow opening of the measurement chamber, comprising: providing fluid communication between the outflow opening of the reservoir chamber and the inflow opening of the measurement chamber to permit at least a portion of the drink additive in the reservoir chamber to flow into the measurement chamber through the inflow opening of the measurement chamber but not out the outflow opening of the measurement chamber;next sealing off a portion of the measurement chamber to confine a first quantity of the drink additive out of fluid communication with the outflow opening of the reservoir chamber and out of fluid communication with the inflow and outflow openings of the measurement chamber; andnext providing fluid communication between the measurement chamber and the interior cavity of the beverage container to permit the first quantity of drink additive to flow into the interior cavity of the beverage container through the outflow opening of the measurement chamber, while preventing additional drink additive in the reservoir chamber from flowing to the interior cavity of the beverage container through the outflow opening of the measurement chamber.

37. The lid of claim 1, wherein the lid includes an upper lid portion and a lower lid portion, at least a portion of the actuator being located in the upper lid portion, and at least a portion of the reservoir chamber and the measurement chamber being located within the lower lid portion, the upper lid portion including an upwardly opening recess sealed off from the interior cavity of the beverage container, the reservoir chamber and the measurement chamber, the actuator including a manually operable button positioned at least partially within the recess and operably connected to an upper end of the upper end portion of the plunger, with the downward movement of the button within the recess moving the plunger sequentially between the first, second and third positions.

38. The lid of claim 37, wherein the recess has a floor portion with an aperture through which an upper end portion of the plunger extends with the upper seal and the lower seal located below the floor portion when the plunger is in the first and second positions, and the lid further includes a seal providing a fluid-tight seal between the plunger and the floor portion to prevent fluid flow through the aperture and thereby seal the recess off from the interior cavity of the beverage container, the reservoir chamber and the measurement chamber.

39. The lid of claim 1, wherein the lid includes an upper lid portion and a lower lid portion, at least a portion of the actuator being located in the upper lid portion, the plunger including an upper end portion having a stop portion positioned in the lower lid portion to prevent upward return movement of the plunger beyond the first position.

40. The lid of claim 39, wherein the upper lid portion has a lower end wall and upward return movement of the plunger beyond the first position is prevented by the stop portion engaging a portion of the lower end wall.

41. The lid of claim 1, wherein the lid includes an upper lid portion and a lower lid portion, at least a portion of the actuator being located in the upper lid portion, and at least a portion of the reservoir chamber and the measurement chamber being located within the lower lid portion, the upper lid portion having a lower end wall with a fill port sized for pouring drink additive through the fill port and thereby into the reservoir chamber, an upper end portion of the actuator extending through the fill port into the lower lid portion, the actuator including a removable fill port cover closing access to the fill port when in a closed position and providing access to the fill port to permit pouring drink additive therethrough and into the reservoir chamber.

42. The lid of claim 41, wherein the cover is in the closed position the upper lid portion is sealed off from the interior cavity of the beverage container, the reservoir chamber and the measurement chamber.

43. The lid of claim 41, wherein the actuator includes a manually operable button, at least a portion of the button being located in the upper lid portion.

44. The lid of claim 1, wherein the lid includes an upper end wall with an aperture through which the plunger extends, the upper and lower seals being attached to the plunger below the upper end wall, the lid further including a seal providing a fluid-tight seal between the plunger and the upper end wall to prevent fluid flow through the aperture.

45. The lid of claim 1, wherein the lid includes an upper end wall with an aperture through which the plunger extends, the upper and lower seals being attached to the plunger below the upper end wall, the plunger including a stop portion positioned to prevent upward return movement of the plunger beyond the first position when an actuating force is removed from the actuator.

46. The lid of claim 45, wherein stop portion is located below the upper end wall and positioned to engage the upper end wall to limit upward return movement of the plunger and thereby prevent upward return movement of the plunger beyond the first position when an actuating force is removed from the actuator.