Patent Publication Number: US-11375835-B2

Title: Insulated beverage container

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a continuation of International PCT Application No. PCT/US2021/056958 filed Oct. 28, 2021 and entitled “INSULATED BEVERAGE CONTAINER”, which claims the benefit of priority of U.S. Provisional Application No. 63/107,409 filed Oct. 29, 2020, and entitled “VACUUM INSULATED BEVERAGE CONTAINER HAVING INTERNAL THERMAL RESERVE” and of U.S. Provisional Application No. 63/220,867 filed Jul. 12, 2021, and entitled “BEVERAGE CONTAINER HAVING VACUUM INSULATED INTERNAL THERMAL RESERVE”, the disclosures of which are hereby incorporated by reference in their entireties. 
    
    
     BACKGROUND 
     Vacuum insulated containers have been used for keeping beverages and other consumables hot or cold. A double-walled container having a vacuum chamber between the two walls can keep a beverage cold or hot for hours by minimizing loss of heat through the double walls due to the intermediary vacuum chamber through which thermal energy cannot conduct. The dual walls are typically made to be thin to reduce the weight of the handheld container and also minimize material costs. There are several factors that motivate a thicker outer wall and a thinner inner wall. For example, the outer wall may be made thicker to increase the durability of the container during falls and general use. The inner wall may unwantedly transfer heat with the beverage, such as a cold beverage receiving heat from the ambient temperature inner wall or a hot beverage losing heat to the ambient temperature inner wall, thus motivating a design need for a thin inner wall. The result is that conventional vacuum insulated containers have inner and outer walls of equal thickness and typically as thin as possible, or to the extent a wall is thickened, then the outer wall is reinforced. The present disclosure reverses this convention, as further discussed herein, and also presents options for vacuum insulating disposable cups. 
     SUMMARY 
     Conventional vacuum insulated beverage containers have inner and outer walls of equal thickness, or have an outer wall of greater thickness. Various vacuum insulated beverage containers of the present disclosure have an inner wall that has a higher heat capacity than the outer wall. The inner wall can be thicker than the outer wall, and in some cases the inner wall may contain material having an especially high heat capacity. The inner wall can then function as a thermal reserve, either sinking or supplying thermal energy to stabilize the temperature of the beverage. Furthermore, a vacuum chamber is positioned axially and radially between the inner and outer walls to insulate the thermal reserve so that essentially all of the cooling or heating capacity of the thermal reserve is used on the beverage. The thermal isolation of the thermal reserve, except through the beverage, means that heat is transferred between the thermal reserve and the beverage only to the extent that the beverage warms or cools from ambient air. 
     When a cold beverage is desired, the beverage container is intended to be cooled prior to receiving the beverage so that the inner wall charges up as a thermal reserve. The beverage is then introduced into the beverage container. The thermal reserve absorbs excess heat from the beverage as the beverage warms over time, slowing the time in which the beverage approaches ambient temperature. In some cases, the beverage container can be stored at freezer temperature and the beverage can be stored at ambient temperature, such that when combined the thermal reserve absorbs substantial heat from the beverage to lower the beverage to a chilled temperature. In such use, only the beverage container needs to be pre-cooled and a variety of beverage options can be stored at ambient temperature, allowing the consumer to select the beverage for chilling instead of pre-chilling all beverages, saving on cooling capacity. The outer wall being relatively thinner means it will approach ambient temperature much faster (if cooled) and therefore be comfortable to hold, even if originally lowered to freezer temperature. The inner wall being thicker means it functions as a vacuum insulated thermal reserve. The inner wall may be solid metal or may contain a medium (e.g., a liquid or a gel) that serves as a thermal reserve. 
     When a hot beverage is desired, the inner wall of the beverage container is intended to be heated prior to receiving the beverage, or the beverage container is filled with an overly hot beverage that transfers heat to thermal reserve. As the beverage cools, the thermal reserve transfers heat to the beverage as the beverage cools over time. 
     A thermal reserve being located within the vacuum chamber of the container means that the thermal energy of the thermal reserve flows predominantly or exclusively through the beverage to stabilize the temperature of the beverage and is not otherwise lost except to the extent it is lost through the beverage via a container opening. Therefore, the heat differential of the thermal reserve can be used exclusively for stabilizing the temperature of the beverage. Being that the thermal reserve is radially and axially within a vacuum chamber, heat transfers between the thermal reserve and the beverage only as needed to the extent that the beverage unavoidably cools or warms through the opening. As such, the thermal reserve is used to counteract the thermal loss through the container opening. Conventional vacuum insulated beverage containers do not include such a thermal reserve, and as such, various embodiments of the present disclosure can stabilize the temperature of a beverage for longer than a conventional vacuum insulated beverage container. Moreover, the vacuum chamber surrounding the hold makes the beverage container tolerable for the user to hold despite the high or low temperature of the thermal reserve. These and other aspects are further discussed herein. 
     Cap features are also disclosed herein for mounting on a container body. Such cap can seal a disposable cup in vacuum insulated beverage container. In this way, a beverage can be sold or otherwise dispensed in a common disposable cup (e.g., a paper cup sold at coffee shops or a plastic cup containing cola from a restaurant) and the disposable cup can be placed in a container body and then sealed with the cap. The container body can provide vacuum insulation, with or without a thermal reserve. This avoids having to pour the beverage directly into the container body to obtain the benefits of vacuum insulation. The disposable cup can then be removed from the container body, still containing the beverage or empty. 
     It is noted that this summary section is not a complete overview of all aspects of the present disclosure. The present summary is provided only by way of example, and not limitation. Other aspects of the present disclosure will be appreciated in view of the entirety of the present disclosure, including the entire text, claims, and accompanying figures. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  shows a perspective view of a beverage container assembly including a can. 
         FIG. 2  shows an unpacked view of the beverage container assembly of  FIG. 1 . 
         FIG. 3  shows an exploded view of the beverage container of  FIGS. 1-2 . 
         FIG. 4  shows a cross-sectional view of the beverage container of  FIGS. 1-3 . 
         FIG. 5  shows a perspective view for a beverage container in a tumbler design. 
         FIG. 6  shows an exploded view of the beverage container of  FIG. 5 . 
         FIG. 7  shows a cross-sectional view of the beverage container of  FIGS. 5-6 . 
         FIG. 8  shows a perspective view for a beverage container in a tumbler design. 
         FIG. 9  shows an exploded view of the beverage container of  FIG. 8 . 
         FIG. 10  shows a cross-sectional view of the beverage container of  FIGS. 8-9 . 
         FIG. 11  shows a perspective view for a beverage container in a wine glass design. 
         FIG. 12  shows an exploded view for the beverage container of  FIG. 11 . 
         FIG. 13  shows a cross sectional view of the beverage container of  FIGS. 11-12 . 
         FIG. 14  shows a perspective view for a beverage container for holding a disposable cup. 
         FIG. 15  shows an unpacked view of the disposable cup having been removed from the beverage container of  FIG. 14 . 
         FIG. 16  shows an exploded view of the beverage container of  FIGS. 14-15 . 
         FIG. 17  shows an exploded view of a cap of the beverage container of  FIGS. 14-15 . 
         FIG. 18  shows a cross sectional view of the beverage container of  FIGS. 14-17 . 
         FIG. 19  shows a cross sectional view of the beverage container of  FIGS. 14-18  but accommodating a different sized disposable cup with use of a stand and having a different cap. 
     
    
    
     While the above-identified figures set forth embodiments of the present invention, other embodiments are also contemplated, as noted in the discussion. In all cases, this disclosure presents the invention by way of representation of possibilities and not limitation. It should be understood that numerous other modifications and embodiments can be devised by those skilled in the art, which fall within the scope and spirit of the principles of the invention. The figures may not be drawn to scale, and applications and embodiments of the present invention may include features, steps and/or components not specifically shown in the drawings. 
     DETAILED DESCRIPTION 
     This disclosure uses multiple examples to demonstrate various inventive aspects. The inventive scope of this disclosure is not necessarily limited to any one of these embodiments, nor to all of them in just the manner shown and/or described. Rather, the inventive aspects demonstrated herein can be implemented in various other containers. One aspect or feature shown or described from one embodiment could be implemented on another embodiment in this disclosure even if not shown or described for that embodiment, or various embodiments not illustrated herein. The embodiments illustrated and/or discussed are intended to be illustrative and not limiting, and the described and/or illustrated features can be mixed and matched. 
     The present disclosure makes use of multiple embodiments to demonstrate various inventive aspects. The embodiments use similar reference numbers and/or descriptions of the components and aspects. An aspect (material, dimensions, functions, relationship to other aspects, etc.) of a component shown and/or described in connection with one embodiment can be present in a similar component of another embodiment even if not explicitly shown or described for the another embodiment, particularly but not exclusively for components of similar reference numbers (e.g., 2, 102, 202, 302, 402, etc. being similar). For the sake of brevity, such common aspects may not be repeated for each embodiment, but may nevertheless be applicable. 
     For the purpose of facilitating discussion, the following embodiments are discussed in terms of containing a liquid beverage such as soda, beer, milk, or coffee, however these and other teachings can apply to embodiments for containing any scoopable heat sensitive beverages such as soup, yogurt, and ice cream, amongst other foodstuffs. 
       FIG. 1  shows a perspective view of a beverage container  1 . The beverage container  1  is holding a prepackaged beverage canister  10 . The beverage container  1  includes a container body  2 . The container body  2  can be cylindrical. The container body  2  includes a top end  3  and a bottom end  4 . A cap  11  is mounted on the top end  3  of the container body  2  to retain the prepackaged beverage canister  10 . The bottom end  4  includes a shoe  9  which supports the beverage container  1 , and on which the beverage container  1  stands. When placed on a surface to rest (i.e. not being held by hand), the shoe  9  is typically the only part of the beverage container  1  that makes contact with any surface. When set down, only the shoe  9  may contact the ground surface. The container body  2  includes an exterior surface  8 . The exterior surface  8  faces radially away from an axis that extend coaxially through the container body  2 . The exterior surface  8  can be round and extend along the axis. 
     The prepackaged beverage canister  10  can be any type of fluid container for transporting beverages. The prepackaged beverage canister  10  is shown to be cylindrical in this embodiment. The particular example of a prepackaged beverage canister  10  shown is of a can, although a prepackaged beverage canister  10  can be a bottle (e.g., plastic or glass) in various cases. The prepackaged beverage canister  10  is typically sealed with the beverage inside before sale for convenient transport. Such prepackaged beverage canisters  10  are widely used for containing fluids such as soda, juice, beer, energy drinks, or carbonated beverages, amongst other options, for drinking directly out of the prepackaged beverage canister  10  in which the user&#39;s lips contact a top lip of the prepackaged beverage canister  10  for drinking from a small opening in the prepackaged beverage canister  10 . Such a prepackaged beverage canister  10  is typically sold containing between seven and twenty four fluid ounces of the beverage, most typically twelve fluid ounces. The prepackaged beverage canister  10  is typically disposable in that the prepackaged beverage canister  10  is intended to be used once and then discarded (i.e. recycled or trashed). The cans are typically made from aluminum, although other material options are possible. In the case of cans, the prepackaged beverage canister  10  typically includes a tab opening mechanism (e.g., stay-tab or pop tab), amongst other options, for conveniently opening the prepackaged beverage canister  10  for consumption of the beverage. In the case of bottle, the prepackaged beverage canister typically includes a twist off cap or pry-off bottle cap. 
       FIG. 2  shows the prepackaged beverage canister  10  having been removed from the beverage container  1 . The removal of the prepackaged beverage canister  10  exposes a hold  7  which is an inner cavity configured for containing a beverage one or both of directly or within a prepackaged beverage canister  10 . As previously shown in  FIG. 1 , the cap  11  is fixed to the container body  2  for holding the prepackaged beverage canister  10  within the hold  7 , but in  FIG. 2  the cap  11  has been dismounted from the container body  2  to permit removal of the prepackaged beverage canister  10  from the hold  7 . In this embodiment, the cap  11  threads onto the container body  2 . More specifically, the cap  11  includes inner threading that interface with outer threading  13  on a mouth  12  of the container body  2 . While threading interface is shown for fixing the cap  11  to the container body  2  for securing the prepackaged beverage canister  10  within the hold  7 , other fixation mechanisms can instead be used, such as press fit or latching. In use, the cap  11  can be dismounted from the mouth  12  (e.g., by rotational unthreading of the cap  11  relative to the container body  2 ) to allow a prepackaged beverage canister  10  to be inserted into the hold  7 . After insertion of the prepackaged beverage canister  10  into the hold  7 , the cap  11  can be remounted on the mouth  12  (e.g., by rotational threading of the cap  11  relative to the container body  2 ). The beverage container  1  can be used over and over again, exchanging in and out various standard cans. In this way, the prepackaged beverage canister  10  is disposable while the beverage container  1  can be used repeatedly and indefinitely. 
     An annular lip  6  is located at the top of the container body  2 . The annular lip  6  can be on the end of the mouth  12 . The mouth  12  can be on the top-most portion of the container body  2 . The lower part of the mouth  12  is connected to an annular ledge  14 . The annular ledge  14  represents a reduction in diameter in the container body  2  from the wider exterior surface  8  to the narrower mouth  12 . The annular ledge  14  faces upwards in this embodiment. While the annular ledge  12  faces directly upwards in this embodiment, the annular ledge  12  could instead be angled or otherwise sloped. While the mouth  12  is narrower as compared to the exterior surface  8  of the container body  2  in this embodiment due to the annular ledge  14 , in some other embodiments the mouth  12  is the same diameter as the exterior surface  8  or otherwise the rest of the container body  2 . In some embodiments, the mouth  12  is wider than the exterior surface  8  or otherwise the rest of the container body  2 . The height of the mouth  12  (e.g., from the ledge  12  to the lip  6 ) may be between 0.25-1.50 inches, amongst other heights. 
     The beverage container  1  includes an opening  5 . The opening  5  in this embodiment corresponds with the lip  6  of the container body  2 . The opening  5  allows access to the hold  7 . 
     The container body  2  includes an annular groove  50 . 
       FIG. 3  shows an exploded view of the container body  2 . While the disassembly shown in  FIG. 2  would be common for exchanging prepackaged beverage canisters  10 , the disassembly shown in  FIG. 3  would not be done during the working life of the container body  2 . Such disassembly shown in  FIG. 3  would breach and thereby ruin the vacuum chamber and associated insulating function. The container body  2  is formed from a plurality of nested tubes. The tubes (including walls and floors) are typically coaxial about a vertical axis and radially overlapping when finally and permanently assembled during manufacturing. 
     The container body  2  includes an outer tubular sidewall  15 . The outer tubular sidewall  15  can define the exterior surface  8 . The outer tubular sidewall  15  can be formed from metal, such as stainless steel or aluminum, such as a single piece of metal. The outer tubular sidewall  15  can form the mouth  12 . In the illustrated embodiment, the outer tubular sidewall  15  includes a lower taper  35  which is a reduction in outer diameter. The lower taper  35  is narrowed to fit into the shoe  9 . In some embodiments, the outer tubular sidewall  15  may have the same radial thickness, or substantially the same radial thickness, throughout its entire height. In this embodiment, the outer tubular sidewall  15  extends from the lower taper  35  to the lip  6 . 
     As further shown in  FIG. 3 , the container body  2  includes an inner tubular sidewall  16 . The inner tubular sidewall  16  can be formed from metal, such as stainless steel or aluminum. In this embodiment, the inner tubular sidewall  16  is multi-layered. In this embodiment, the inner tubular sidewall  16  includes a side sealing layer  17  and a sleeve  18 . In various other embodiments, inner tubular sidewall  16  is a single layer. Each of the side sealing layer  17  and the sleeve  18  are preferably formed from metal, such as stainless steel or aluminum, however other material options are possible. 
     The container body  2  further comprises an outer bottom wall  24 . Outer bottom wall  24  is round. The outer bottom wall  24  can be formed from metal, such as stainless steel or aluminum; however other material options are possible. As further shown herein, the outer bottom wall  24  interfaces with the lower taper  35  of the outer tubular sidewall  15  to seal a vacuum chamber. 
     The lower-most part of the container body  2  is the shoe  9 . The shoe  9  can be formed by metal. The outer tubular sidewall  15  engages the shoe  9  by the lower taper  38  fitting into the shoe  9 . In an alternative embodiment, the taper  38  is located on the top end of the shoe  9  and fits into the bottom end of the outer tubular sidewall  15 . 
       FIG. 4  is a cross-sectional side view of the beverage container  1 . The section of the beverage container  1  can be taken along its axis. The beverage container  1  can be symmetric around the axis, so the two-dimensional view of  FIG. 4  can represents the entire structure  3600  around the axis (except where noted, such as for threading pitch). The cross-sectional view corresponds with the configuration of  FIG. 1  in which the beverage container  1  is assembled and further includes the prepackaged beverage canister  10  within the hold  7  of the beverage container  1 . In various alternative embodiments, the hold  7  is used to directly hold (contact) the beverage instead of the prepackaged beverage canister  10  being intermediary. 
     The side view of  FIG. 4  indicates an axis (along line A). The axis can be a vertical axis, as it is oriented in an up-down orientation. The axis corresponds with the long axis of the beverage container  1 , the container body  2 , and the prepackaged beverage canister  10 . The axis is coaxial with the long axis of the beverage container  1 , the container body  2 , and the prepackaged beverage canister  10 . The axis is vertical. The axis can be in the centerline of the beverage container  1 , about which the nested walls are coaxial. Directional references made herein to above, below, higher, lower, height, taller, and shorter are assessed along the axis (or equivalent axis of a different tumbler). 
     Orthogonal to the axis is a radial direction (along line R). The radial direction projects out from the axis orthogonally. The radial direction can be 360° about the axis and is not necessarily a single ray projecting orthogonal to the axis in a single orientation. As such, radially can refer to being orthogonally outward from the axis. An aspect described as radial can be along the radial direction. Radially inward can be towards the axis while radially outward can be away from the axis. Inner as used herein can refer to being radially closer to the axis while outer as used herein can refer to being radially further away from the axis. 
     The cap  11  is a retainer ring in the illustrated embodiment, but the cap  11  can be take various other shapes, such as that of a lid that fully covers opening  5 . The cap  11  partially covers the opening  5  when mounted to the container body  2  in this embodiment. As shown, the cap  11  includes an annular retaining flange  27  which projects radially inward to engage an upper taper in the prepackaged beverage canister  10 . Cap  11  includes inner threading which interfaces with complementary outer threading  13  of the mouth  12  of the container body  2 . Rotating the cap  11  about the mouth  12  can either unsecure the cap  11  and the prepackaged beverage canister  10  or can secure the cap  11  to cause the annular retaining flange  27  to press down on the upper taper in prepackaged beverage canister  10  to secure prepackaged beverage canister  10  in the hold  7 . While the cap  11  is threaded onto the mouth  12  in this embodiment, it may be press fit or connected by bayonet in other embodiments or a different retaining feature may be used in various other embodiments. As the cap  11  is threaded onto the mouth  12 , the bottom side of the cap  11  may approach and possibly contact an annular ledge  14  of the container body  2 . 
     In the illustrated embodiment, the mouth  12  is formed from multiple layers of metal. In particular, an inner layer is formed by an inner tubular sidewall  16  and an outer layer is formed by the outer tubular sidewall  15 . Along the mouth  12 , the inner tubular sidewall  16  is joined to the outer tubular sidewall  15  along joint  32 . Joint  32  can be an airtight annular seal. In some embodiments, the inner tubular sidewall  16  and the outer tubular sidewall  15  are formed from the same piece of contiguous metal and joint  32  is not needed, and instead the piece of metal is bent to form the lip  6 . Various other embodiments include lip  6  but not mouth  12 . 
     In this embodiment, inner tubular sidewall  16  is formed by side sealing layer  17  and sleeve  18 . The side sealing layer  17  is radially inward of the sleeve  18  (at least radially along the hold  7 ). The sleeve  18  comprises a sleeve sidewall  71  (which extends only vertically in this embodiment) and a sleeve floor  76  (which extends horizontally or radially in this embodiment). In this embodiment, the sleeve sidewall  71  is contiguous with the sleeve floor  76  such that both are formed from the same piece of material. The inner tubular sidewall  16  can include more layers. Between the side sealing layer  17  and the sleeve  18  is a sealed media chamber  70  and media  72 , as further explained herein. 
     An inner bottom wall  23  defines a floor of the hold  7 . The inner bottom wall  23  can be formed from metal, such as stainless steel or aluminum. In this embodiment, the inner bottom wall  23  is formed by a bottom sealing layer  25  and the sleeve  18 . In this case, the part of the sleeve  18  that forms the inner bottom wall  23  is the sleeve floor  76 . The inner bottom wall  23  can include more layers. Between the bottom sealing layer  25  and the sleeve  18  is the sealed media chamber  70  and the media  72 , as further explained herein. 
     The outer tubular sidewall  15  extends from above the shoulder  19  to below the inner bottom wall  23 . The outer tubular sidewall  15  may extend, in some embodiments, to the lip  6 . The outer tubular sidewall  15  may extend below the inner bottom wall  23 . The outer tubular sidewall  15  extends below the hold  7  to the outer bottom wall  24 . In the illustrated embodiment, the outer tubular sidewall  15  extends below the hold  7  to the shoe  4 . 
     The hold  7  is cylindrical. The hold  7  is defined by the inside surface of the inner tubular sidewall  16 . This surface can directly contact the beverage and/or the prepackaged beverage container  10 . This surface can be vertically straight such that the inner diameter of the hold  7  is constant, for a portion or the entirety, from the lip  6  to the inner bottom wall  23 . This surface can be vertically slanted such that the inner diameter of the hold  7  widens or narrows along the axis between lip  6  and the inner bottom wall  23 . 
     The container body  2  is generally formed by the inner tubular sidewall  16 , the outer tubular sidewall  15 , the inner bottom wall  23 , and the outer bottom wall  24 . Within and between the structures is formed a vacuum chamber  36 . The vacuum chamber  36  is tubular around the hold  7  between the inner tubular sidewall  16  and the outer tubular sidewall  15 . The vacuum chamber  36  further includes a planar section axially between the inner bottom wall  23  and the outer bottom wall  24 . In another sense, the vacuum chamber  36  is formed radially between the inner tubular sidewall  16  and the outer tubular sidewall  15 , and is formed axially between the inner bottom wall  23  and the outer bottom wall  24 . 
     The outer bottom wall  24  can be connected to the outer tubular sidewall  15  by joint  34 . Joint  34  can be an annular seam to create an airtight annular seal to maintain the vacuum chamber  36 . To align the outer bottom wall  24  with the lower taper  35  of the outer tubular sidewall  15  to form joint  34 , the outer bottom wall  24  may include an annular flange that is curved to transition from a planar portion that is orthogonal to the axis to a flange that is orientated parallel and coaxial with the axis. While the outer bottom wall  24  is shown attaching directly to the lower taper  35  of the outer tubular sidewall  15 , the outer bottom wall  24  may instead attached to a non-tapered portion of the outer tubular sidewall  15  or may be indirectly connected to the outer tubular sidewall  15 . 
     The inner tubular sidewall  16  can include an inner cylindrical portion  29 . The outer tubular sidewall  15  can include an outer cylindrical portion  28 . The inner cylindrical portion  29  can have a consistent radial thickness along its entire height. The outer cylindrical portion  28  can have a consistent radial thickness along its entire height. The outer cylindrical portion  28  can extend from the shoe  9  to the annular ledge  14 , or in various other embodiments, to the mouth  12  or to the lip  6  (if no mouth  12  is present, as in subsequent embodiments). The inner cylindrical portion  29  can be parallel and coaxial with the outer cylindrical portion  29 . The inner cylindrical portion  29  can extend from lower corner  20  to shoulder  19 , with respectively represent transitions in radial thickness of the inner tubular sidewall  16 . 
     In the illustrated embodiment, the inner tubular sidewall  16  includes a shoulder  19 . The shoulder  19  is annular in that it extends entirely 360 degrees around the axis. The shoulder  19  defines a surface that is at least partially upwards facing within the vacuum chamber  36 . In this case, the shoulder  19  is slanted relative to the radial and axial directions. The shoulder  19  represents a transition in the inner tubular sidewall  16  between a thinner neck  22  and a thicker trunk  21 . The trunk  21  can be a major axial portion of the inner tubular sidewall  16  while the neck  22  can be a minor axial portion of the inner tubular sidewall  16  that is above the trunk  21 . 
     The neck  22  may be limited to extending from the shoulder  19  to the joint  32 . The neck  22  may be limited to extending from the shoulder  19  to the lip  6 . The height of the neck  22  may be between 0.125-1.5 inches, or more narrowly 0.25-0.5 inches in some embodiments. The neck  22  may be formed only by the inner tubular sidewall  16 . The neck  22  is not be formed by the outer tubular sidewall  15 . The radial inner surface of the neck  22  is exposed within the hold  7  while the radial outer surface of the neck is exposed within the vacuum chamber  36 . More specifically in this embodiment, the side sealing layer  17  in various embodiments, as a single layer of metal, is exposed within the hold  7  and the vacuum chamber  36  along the neck  22 . The trunk  21  may be at least 2.0 inches tall. The height of the trunk  21  may be between 3.0-7.0 inches, or more narrowly 4.5-6.0 inches. The trunk may be less than 8 inches tall. 
     In the illustrated embodiment, the inner tubular sidewall  16  includes a lower corner  20 . The lower corner  20  can be on the bottom end  4  of the container body  2 . The lower corner  20  is annular in that it extends entirely 360 degrees around the axis. The lower corner  20  represents a transition between the vertical sleeve sidewall  71  and the horizontal sleeve floor  76 . The lower corner  20  transitions to downward facing surface  48 . The downward facing surface  48  at least partially or entirely faces downward within the vacuum chamber  36 , such as to the outer bottom wall  24 . In this case, the lower corner  20  is slanted relative to the radial and axial directions. The lower corner  20  can represent a transition in radial thickness of the inner tubular sidewall  16 , from thicker above the lower corner  20  and thinner or flat/non-existent below the lower corner  20  (e.g., along the downward facing surface  48 ). The top terminus of the inner cylindrical portion  29  can be defined by the shoulder  19 . The bottom terminus of the inner cylindrical portion  29  can be defined by the lower corner  20  and/or downward facing surface  48 . 
     The inner bottom wall  23  includes downward facing surface  48 , which defines the lower terminus of the inner bottom wall  23  and faces downward into the vacuum chamber  36 . The inner bottom wall  23  forms an upward facing surface  41 . The upward facing surface  41  defines the lower boundary of the hold  7 . The upward surface  41  may be bounded by the side sealing layer  17 . The downward facing surface  48  is radially wider, and larger in surface area, as compared to the upward surface  41 . 
     The inner bottom wall  23  forms a puck  26 . The puck  26  can serve as part or all of a thermal reserve. The puck  26  is formed axially between the hold  7  and the vacuum chamber  36 , and is entirely radially surrounded by the vacuum chamber  36 . The puck  26  can be below the bottom sealing layer  25  and above the downward facing surface  48 . The puck  26  can be in the shape of a disk. The puck  26  can have a round radial periphery as shown, however in other embodiments the periphery can be another shape. The puck  26  can be integrated with the inner bottom wall  23  and/or the inner tubular sidewall  16  as shown, or may be a separate component. 
     The inner tubular sidewall  16  can include an inner cylindrical portion  29 . The inner cylindrical portion  29  can extend axially from the shoulder  19  to the lower corner  20 . The inner cylindrical portion  29  can be a thermal reserve. An outer cylindrical portion  28  of the outer tubular sidewall  15  radially overlaps with the inner cylindrical portion  29 . 
     The outer cylindrical portion  28  can extend above the inner cylindrical portion  29 . The outer cylindrical portion  28  can extend below the inner cylindrical portion  29 . As shown, the outer cylindrical portion  28  is axially longer than the inner cylindrical portion  29 . More specifically, the annular ledge  14  (and the lip  6 ) is above the shoulder  19 , respectively representing the tops of the outer cylindrical portion  28  and the inner cylindrical portion  29  respectively. The joint  34  is below the lower corner  20 , respectively representing the bottoms of the outer cylindrical portion  28  and the inner cylindrical portion  29  respectively. 
     One or both of the shoulder  19  and the lower corner  20  can be a step, corresponding to a change in radial wall thickness of the inner tubular sidewall  16 . Such a change in wall thickness can define the thicker trunk  21  and thinner neck  22 . Such a change in wall thickness can define the inner cylindrical portion  29 . Such a change in wall thickness can be an increase in thickness that projects radially outward into the vacuum chamber  36 . Such a change in wall thickness may not project radially inward into the hold  7 . There may be no corresponding step(s) in the outer tubular sidewall  15  that corresponds to the step(s) in the inner tubular sidewall  16 . Any changes in inner wall surface profile within the hold  7  may correspond to profile changes in the inner diameter of the hold  7  (e.g., a narrowing or widening of a portion of the hold  7 , decreasing or increasing, respectively, the diameter of the hold  7 ) but not changes in wall thickness. 
     The inner cylindrical portion  29  projects into the vacuum chamber  36  so that vacuum space of the vacuum chamber  36  is both directly axially above the inner cylindrical portion  29  and directly axially below the inner cylindrical portion  29 . Such projection is due to a change in radial thickness of the inner tubular sidewall  16  and not a curve or step in the inner tubular sidewall  16  that does not change wall thickness. The inner cylindrical portion  29  includes a first exposed annular surface that is upwards facing within the vacuum chamber  36 , as defined by the shoulder  19 , and a second exposed annular surface that is downwards facing within the vacuum chamber  36 , as defined by the lower corner  20  and/or downward facing surface  48 . 
     In various embodiments, the shoe  9  does not seal the vacuum chamber  36 . However, the shoe  6  provides mechanical support to the rest of the container body  2 , and protects the outer bottom wall  24  which does seal the vacuum chamber  36 . An annular interface between the shoe  9  and the outer tubular sidewall  15  is connected at joint  33 . 
     The outer bottom wall  24  includes a port  30 , which fluidly connects the vacuum chamber  36  to the atmosphere, or at least the area between the outer bottom wall  24  and the shoe  4 , except for being sealed. In this embodiment, the port  30  is sealed by plug  31 . The port  30  may be coaxial with the axis, or can be offset from the axis. The port  30  is formed in a dimple  39  of the outer bottom wall  24 , the dimple  39  adding strength to the port  30  and protecting the plug  31 . 
     To form the vacuum chamber  36 , all gas, or most gas relative to the atmosphere, can be sucked through port  30  of dimple  39  from the vacuum chamber  36 , such as when the entire container body  2  is placed under vacuum during the manufacturing process. To further help with gas evacuation, the container body  2  can be exposed to hear, such as above 300° F., which further helps expand and evacuate gas from the vacuum chamber  36 . Plug  31  can fill the port  30  to prevent gas ingress after the vacuum chamber  36  has been evacuated. In some manufacturing techniques, plug  31  is a pellet of resin that is placed in the dimple  39  in the outer bottom wall  24  surrounding the port  30  while the container body  2  is placed upside down and exposed to heat of between 300-600° F. The pellet of resin can melt at its melting temperature to fill the port  30  and form plug  31 . The plug  31  can then cool to permanently seal the port  30  to permanently maintain the vacuum chamber  36 . Once the gas is removed and the vacuum chamber  36  is sealed, the vacuum chamber  36  can be a void. Various other methods are possible for developing and sealing the vacuum chamber  36 . 
     It is worthwhile to briefly discuss thermal conduction. Thermal conduction is the flow of thermal energy through directly contacting materials. Such materials can be solids, liquids, or gasses. Thermal energy will only conduct along a thermal gradient, in which one material is at a higher temperature than the other, such that thermal energy only conducts from the higher temperature material to the lower temperature material. The rate of heat transfer is proportional to the degree of the gradient, with a greater rate of heat flow occurring across a greater heat gradient and a lesser rate of heat transfer occurring across a lower heat gradient. The flow of heat between directly contacting materials continues until they reach thermal equilibrium—the same temperature. Thermal energy does not conduct directly between materials that are not in direct contact or which are the same temperature (although heat may conduct indirectly through bridging material that is in direct contact). Moreover, because thermal energy only conducts along a gradient and the rate of heat transfer is proportional to the degree of the gradient, thermal energy will flow in greater quantity along a thicker piece of material than a thinner piece of material because a wider gradient front will be established along a wider piece of material than the narrower piece of material. 
     A vacuum chamber can create a gap to prevent thermal conduction. The vacuum chamber  36  surrounds the hold  7  radially, and axially on the bottom side. The vacuum chamber  36  insulates hold  7  by reducing or eliminating direct thermal conduction radially, and axially on the bottom surface  48  from the outer tubular sidewall  15  (except through lip  6  and/or mouth  12 ) and the outer bottom wall  24 . The cylindrical gap of the vacuum chamber  36  between the inner tubular sidewall  16  and the outer tubular sidewall  15  prevents radial thermal conduction from the outer tubular sidewall  15 , which can receive ambient thermal energy from the exterior surface  8 , to the inner tubular sidewall  16 , which contacts the beverage or the prepackaged beverage canister  10 . The absence of gas within the cylindrical gap prevents conduction across the cylindrical gap between the inner tubular sidewall  16  and the outer tubular sidewall  15 . Likewise, an axial gap of the vacuum chamber  36  between the inner bottom sidewall  23  and the outer bottom wall  24  (and/or the shoe  9 ), and the absence of gas within the axial gap, prevents conduction across the axial gap. 
     The inner tubular sidewall  16  and inner bottom wall  23  both hang within the vacuum chamber  36  from the neck  22 . No supporting structure bridges across the vacuum chamber  36  to support the inner tubular sidewall  16  and inner bottom wall  23 , except to the extent that the inner tubular sidewall  16  hangs on neck  22 . In this embodiment, the inner bottom wall  23  is only in contact with the inner tubular sidewall  16  (except for the beverage and/or prepackaged beverage canister  10  in the hold  7 ). The inner tubular sidewall  16  is only in contact (indirectly or directly) with the outer tubular sidewall  15  at lip  5  and/or mouth  12 . 
     To limit thermal convection, a coating may be applied to the surfaces within the vacuum chamber  36  to reflect electromagnetic radiation to minimize thermal radiation between the inner tubular sidewall  16  and the outer tubular sidewall  15 , as well as between the inner bottom wall  23  and the outer bottom wall  24 . The coating may create a reflective, low emittance surface. The coating may be on the outside of the inner tubular sidewall  16  and the inner bottom wall  23 , and/or the inside of the outer tubular sidewall  15  and the outer bottom wall  24 . Such coatings are typically thin and do not meaningfully contribute to weight, wall thickness, or heat capacity. 
     Due to the vacuum chamber  36 , and possibly the coating, heat transfer may be limited to occurring (e.g., via conduction, convection and/or radiation) through the lip  6  and/or the mouth  12  where the inner tubular sidewall  16  comes in contact with the outer tubular sidewall  15 . Limiting thermal conduction to the lip  6  and/or the mouth  12  substantially reduces thermal conduction to keep beverages at their desired temperature. 
     As further discussed herein, the illustrated embodiment takes particular advantage of the vacuum chamber  36  by forming a thermal reserve  37  within the vacuum chamber  36 . As previously mentioned, conventional vacuum insulated container designs attempt to minimize and equalize wall thicknesses to save on weight, material cost, and thermal waste, or at least have the outer wall be thicker than the inner wall so that the outer wall is particularly robust. 
     Conventionally, a generic beverage container would be stored at ambient temperature (typically neither cooled or heated, such as between 60-80 degrees Fahrenheit, often at or about 70 degrees Fahrenheit) while the beverage (whether or not in a prepackaged beverage canister  10 ) would be cooled or heated as desired such as via a refrigerator, stove, kettle, or microwave oven while outside of the generic beverage container. Upon combining the cooled or heated beverage with the ambient temperature beverage container, the inner wall of the generic beverage container would unwantedly absorb heat from the heated beverage or transfer heat to the cooled beverage. This thermal waste is particularly pronounced with metal beverage containers due to the high heat capacity of metal. To minimize such thermal waste in generic metal vacuum insulated containers, the inner sidewall and bottom wall which contact either the beverage or the beverage container would be made as thin as possible. Various embodiments of this disclosure do the opposite by thickening the inner sidewall and/or bottom wall to create a vacuum insulated thermal reserve  37 . This thermal reserve  37  can then be taken advantage of by the user cooling or heating the thermal reserve  37  before introduction of the beverage or beverage container into the hold  7  so that the thermal reserve  37  can cool or heat the beverage over time. The thermal reserve  37  shown in  FIG. 4  is formed by the inner tubular sidewall  16  and the inner bottom wall  23 , however various other thermal reserve designs are possible from one or both of an inner tubular sidewall or an inner bottom middle wall. 
     To use the thermal reserve  37 , the user cools the container body  2 , including the thermal reserve  37 , during storage. For example, the container body  2  can be stored in a refrigerator or cooler along with the beverage (whereas conventional practice is to store a conventional vacuum insulated beverage container at ambient temperature while the beverage itself is stored in a cool environment). This can mean the container body  2  and the beverage can be within the cool environment together but separated, or the beverage can be placed within the hold  7  of the container body  2  so that they can be cooled or kept cool together. If cooled separately, the cooled beverage or prepackaged beverage canister  10  can be placed in the hold  7  after removal from the cool environment. If the beverage or prepackaged beverage canister  10  is the same temperature as the inner tubular sidewall  16 , then there is no thermal gradient and the inner bottom wall  23  transfers no or little thermal energy to the beverage (they are at thermal equilibrium), thereby minimizing or eliminating thermal waste. Little or no thermal conduction takes place initially between the cooled beverage and the thermal reserve  37  because there is no thermal gradient due to thermal equilibrium. Alternatively, the container body  2  may be cooled to a lower temperature than the beverage so that, once combined, the thermal reserve  37  can absorb heat from the beverage to further cool the beverage. In some cases, the container body  2  may cooled below freezing temperature (e.g., placed in a freezer, or cooled to a temperature that is less than 32 degrees Fahrenheit, such as around zero degrees Fahrenheit) and then combined with an uncooled beverage (e.g., a beverage stored at ambient temperature), so that, once combined, the thermal reserve  37  can absorb heat from the beverage to cool the beverage to a desired temperature (e.g., around 37 degrees Fahrenheit as a common chilled temperature for a beverage). This manner of use can be particularly useful because then only the container body  2  needs to be stored in cool environment while various beverages can be stored at room temperature and only the chosen beverage is then cooled by the container body  2 . 
     If the container body  2  was cooled before placing the beverage in the hold  7 , then as the beverage warms due to thermal transfer through the opening  5  over time, the thermal reserve  37  can absorb the introduced heat from the beverage to minimize overall warming of the beverage. The thermal reserve  37  continues to cool the beverage even as heat is introduced over time through the opening  5 . Due to the thermal reserve being within the vacuum chamber  36 , other channels for heating the thermal reserve  37  are eliminated or minimized so that most or all of the thermal energy transferred to/from the thermal reserve  37  comes through the beverage itself, such that essentially all of the thermal transfer capacity of the thermal reserve  37  is used to stabilize the temperature of the beverage. For example, if the beverage warms very slowly due to minimal heat introduction to the beverage through the opening  5 , then the thermal reserve  37  remains cool and ready to stabilize the temperature of the beverage because the thermal reserve  37  itself is insulated and it only uses its cooling capacity to the extent that the beverage warms, slowly in this case. 
     If a warm beverage is desired, then the user heats the thermal reserve  37 , before introducing the beverage into the hold  7 . To avoid risk of burning the user, the user only heats the thermal reserve  37 , not the whole container body  2 . This can be done by pouring a hot liquid into the hold  7  to warm the thermal reserve  37 . The hot liquid can then be poured out before introducing the beverage or prepackaged beverage canister  10  into the hold  7 . In this way, little or no heat is transferred from the beverage to the thermal reserve  37  soon after introduction and the beverage remains at or close to its original temperature. Over time, as the beverage cools due to thermal transfer through the opening  5 , heat will be transferred from the thermal reserve  37  to the beverage to maintain the beverage close to its desired temperature. In an alternative manner of use, the container body  2  may not be preheated but the beverage is heated to be overly hot, above the desired consumption temperature before introduction into the hold  7 . Upon introduction to the hold  7 , the overly heated beverage transfers some of its thermal energy to the thermal reserve  37  until the beverage and the thermal reserve  37  reach thermal equilibrium, thus cooling the beverage to a desired consumption temperature. The thermal reserve  37  is thus heated by the beverage and then the thermal reserve  37  transfers thermal energy back over to the beverage as the beverage loses thermal energy over time through the opening  5 . 
     The thermal reserve  37  can be formed by the container body  2  having a larger heat capacity radially and/or axially inward of the vacuum chamber  36  than outward of the vacuum chamber  36 . Regarding the thermal reserve  37  being formed by the container body  2  having a larger heat capacity radially inward of the vacuum chamber  36  than outward of the vacuum chamber  36 , the inner tubular sidewall  16  can have a larger heat capacity than the outer tubular sidewall  15 . The heat capacity of the inner tubular sidewall  16  can be at least two, three, five, or ten times greater than the heat capacity of the outer tubular sidewall  15 . To have a higher heat capacity, the inner tubular sidewall  16  can weigh at least two, three, five, or ten times more than the outer tubular sidewall  15 . As examples, the inner tubular sidewall  16  can weigh more than the outer tubular sidewall  15 . The inner tubular sidewall  16  can have a radial thickness greater than the radial thickness of the outer tubular sidewall  15 . As examples, the inner tubular sidewall  16  can have a radial thickness at least two, three, five, or ten times thicker than the radial thickness of the outer tubular sidewall  15 . The inner tubular sidewall  16  can have a radial thickness greater than the combined radial thickness of both of the vacuum chamber  36  and the outer tubular sidewall  15 . As examples, the inner tubular sidewall  16  can have a radial thickness at least two, three, five, or ten times thicker than the combined radial thickness of both of the vacuum chamber  36  and the outer tubular sidewall  15 . 
     The radial thickness of the outer tubular sidewall  15  may be made thin so as to minimize its heat capacity so that, if the whole container body  2  is cooled to cool the thermal reserve  37  (e.g., in a refrigerator), then the outer tubular sidewall  15  reaches ambient temperature rather quickly, due to the exterior surface  8  being exposed to ambient temperature, resulting in the container body  2  being more comfortable to hold in the user&#39;s hand as compared to a cold object while the thermal reserve  37  remains cold and ready to cool the beverage. 
     The thermal reserve  37  is located entirely radially and axially outside of the hold  7 , and radially and axially inside of the vacuum chamber  36 . The thermal reserve  37  is located entirely radially and axially between the hold  7  and the vacuum chamber  36 . 
     The thermal reserve  37  can be formed by one or both of the inner tubular sidewall  16  and the inner bottom wall  23 . The combined heat capacity of both of the inner tubular sidewall  16  and the inner bottom wall  23  is greater than the combined heat capacity of both of the outer tubular sidewall  15  and the outer bottom wall  24 . The combined heat capacity of both of the inner tubular sidewall  16  and the inner bottom wall  23  can be at least double the combined heat capacity of both of the outer tubular sidewall  15  and the outer bottom wall  24 . The combined heat capacity of both of the inner tubular sidewall  16  and the inner bottom wall  23  can be at least three times (or four times, in various embodiments) greater than the combined heat capacity of both of the outer tubular sidewall  15  and the outer bottom wall  24 . In some embodiments, the heat capacity of the inner tubular sidewall  16  is greater than (or at least double or triple, in various embodiments) the combined heat capacity of both of the outer tubular sidewall  15  and the outer bottom wall  24 . In some embodiments, the heat capacity of the inner bottom wall  23  is greater than (or at least double or triple, in various embodiments) the combined heat capacity of both of the outer tubular sidewall  15  and the outer bottom wall  24 . 
     It is noted that it is particularly unconventional for the inner tubular sidewall  16  to have a higher heat capacity or weigh more than the outer tubular sidewall  15  because even if these components had equivalent wall thicknesses in a conventional design, then in the conventional design the outer tubular sidewall would have a larger circumference than the inner tubular sidewall due to the outer tubular sidewall being radially outward and thus the outer tubular sidewall would contain more material resulting in the outer tubular sidewall being heavier and having a higher heat capacity than the inner tubular sidewall. 
     The inner tubular sidewall  16  can have multiple radial thicknesses at different heights along the axis. The inner tubular sidewall  16  is radially thicker along the trunk  21  and radially thinner along the neck  22 . The neck  22  being radially thinner than the trunk  21  can create a thermal bottleneck that slows heat transfer between the trunk  21  and the mouth  12  and/or lip  6  (if no mouth  12  is present, as in later embodiments), which helps keep the temperature of the trunk  21  isolated from atmospheric heat so its heat transfer is mainly with the beverage. The inner tubular sidewall  16  may range in radial wall thickness between 0.02-1.0 inches. The radial wall thickness of the side sealing layer  17  may be between 0.01-0.125 inches. The radial wall thickness of the sleeve  18  may be between 0.01-0.125 inches. The radial width between the side sealing layer  17  and the sleeve  18  may be between 0.2-1.0 inches. The radial thickness of the inner cylindrical portion  29  that forms the thermal reserve  37  may be between 0.22-1.0 inches. The outer tubular sidewall  15  can have multiple radial thicknesses at different heights along the axis. The outer tubular sidewall  15  may range in radial wall thickness between 0.01-0.125 inches. Other dimensional values are possible. 
     To form the thermal reserve  37  of the inner tubular sidewall  16  having higher heat capacity as compared to the outer tubular sidewall  15 , the inner tubular sidewall  16  can include a protuberance that extends radially outward, into the vacuum chamber  36 . The protuberance can extend entirely about the axis such that it is 360 degrees. The protuberance does not relate to a mere outward projecting bend in the inner tubular sidewall  16  in which the thickness of the inner tubular sidewall  16  does not change. Rather, the protuberance results from an increase in thickness of the inner tubular sidewall  16  projecting into the vacuum chamber  36 . 
     The protuberance may be formed by the inner cylindrical portion  29 . The protuberance may be formed by the trunk  21  extending radially relative to the neck  22 . The protuberance can be formed by the shoulder  19  and/or lower corner  20 , being that the shoulder  19  and lower corner  20  represent transitions in radial thickness of the inner tubular sidewall  16 . In these ways, the protuberance protrudes into the vacuum chamber  36 . As shown, the outer tubular sidewall  15  includes ledge  14  to wrap the vacuum chamber  36  around the protuberance between the ledge  14  and the exterior surface  8  to maximize the amount of material mass of the inner tubular sidewall  15  that is insulated by the vacuum chamber  36 . The vacuum chamber  36  can be positioned directly axially above and below the protuberance. The greater heat capacity, weight, and/or radial thickness of the protuberance relative to the rest of the inner tubular sidewall  16  may mean that functionally, most or all of the thermal reserve  37  is provided by the protuberance relative to the rest of the inner tubular sidewall  16 . 
     The inner cylindrical portion  29  can have a larger heat capacity than the outer cylindrical portion  28 . The heat capacity of the inner cylindrical portion  29  can be at least two, three, five, or ten times greater than the heat capacity of the outer tubular sidewall  15 . To have a higher heat capacity, the inner cylindrical portion  29  can weigh at least two, three, five, or ten times more than the outer cylindrical portion  28 . As examples, the inner cylindrical portion  29  can weigh more than the outer cylindrical portion  28 . The inner cylindrical portion  29  can have a radial thickness greater than the radial thickness of the outer cylindrical portion  28 . As examples, the inner cylindrical portion  29  can have a radial thickness at least two, three, five, or ten times thicker than the radial thickness of the outer cylindrical portion  28 . The inner cylindrical portion  29  can have a radial thickness greater than the combined radial thickness of both of the vacuum chamber  36  and the outer cylindrical portion  28 . As examples, the inner cylindrical portion  29  can have a radial thickness at least two, three, five, or ten times thicker than the combined radial thickness of both of the vacuum chamber  36  and the outer cylindrical portion  28 . 
     The radial width of shoulder  19  and/or the lower corner  20 , corresponding to the radial thickness of the protuberance of the thermal reserve  37  into the vacuum chamber  36 , can be in the range of 0.2-1.5 inches. Other ranges are possible. The height of the inner cylindrical portion  29 , can be the axial distance from shoulder  19  to the lower corner  20 . Such height can be between 2.0-8.0 inches, although different ranges are possible. 
     The height of the hold  7  is from the upward facing surface  41  of the inner bottom wall  23  to the opening  5  (e.g., the circular plane formed by the lip  6 ). The inner cylindrical portion  29  may extend axially along the hold  7  for at least a third of the height of the hold  7 . In some embodiments, the inner cylindrical portion  29  extends axially along the hold  7  for at least a half of the height of the hold  7 . In some embodiments, the inner cylindrical portion  29  extends axially along the hold  7  for at least two thirds of the height of the hold  7 . As shown, the inner cylindrical portion  29  does not extend axially along the hold  7  for the full height of the hold  7 . In some embodiments, the inner cylindrical portion  29  does not extend axially along the hold  7  for any more than nine tenths of the full height of the hold  7 . In some embodiments, the inner cylindrical portion  29  does not extend axially along the hold  7  for any more than three fourths of the full height of the hold  7 . In some embodiments, the inner cylindrical portion  29  does not extend axially along the hold  7  for any more than two thirds of the full height of the hold  7 . 
     Regarding the thermal reserve  37  being formed by the container body  2  having a larger heat capacity axially inward of the vacuum chamber  36  than axially outward of the vacuum chamber  36 , the inner bottom wall  23  can have a larger heat capacity then the outer bottom wall  24 . The heat capacity of the inner bottom wall  23  can be at least two, three, five, or ten times greater than the heat capacity of the outer bottom wall  24 . To have a higher heat capacity, the inner bottom wall  23  can weigh at least two, three, five, or ten times more than the outer bottom wall  24 . As examples, the inner bottom wall  23  can have an axial thickness at least two, three, five, or ten times thicker than the axial thickness of the outer bottom wall  24 . 
     It is noted that it is particularly unconventional for the inner bottom wall  23  to have a higher heat capacity or weigh more than the outer bottom wall  24  because even if these components had equivalent wall thicknesses in a conventional design, then the outer bottom wall would weigh more, and have a higher heat capacity than the inner bottom wall due to the outer bottom wall necessarily having a larger diameter than the inner bottom wall, and further because the outer bottom wall includes bends such as dimple  39  and alignment for joint  34 . 
     As shown, the distance of the radial gap between the outer tubular sidewall  16  and inner tubular sidewall  15  that defines the vacuum chamber  36  may be different at different heights along the axis. As such, the vacuum chamber  36  may have a first radial gap distance at a first axial location and a second radial gap distance at a second axial location, the first radial gap distance different than the second radial gap distance. 
     The thermal reserve  37  is suspended within the vacuum chamber  36 . All of the weight of the thermal reserve  37  is supported through the neck  22 . All of the weight of the thermal reserve  37  is supported through one or both of the mouth  12  and the lip  6  (which may exclusively be the lip  6  in embodiments that do not include a mouth  12 ). All of the weight of the thermal reserve  37  is supported through joint  32  that connects the inner tubular sidewall  16  to the outer tubular sidewall  15 . All weight of the inner tubular sidewall  16  and inner bottom wall  123  (including all weight within the hold  7  and the thermal reserve  7 ) is supported through the outer tubular sidewall  15 . Furthermore, all weight of the beverage container  1  is supported by shoe  9 . 
     In various embodiments, the inner tubular sidewall  16  is a single layer (e.g., solid metal) radially from the hold  7  to the vacuum chamber  36 . Likewise, the inner bottom wall  23  may be a single layer (e.g., solid metal) axially from the hold  7  to the vacuum chamber  36 . However, in the illustrated embodiment of  FIG. 4 , the thermal reserve  37  of the inner tubular sidewall  16  is formed by multiple layers. In the embodiment shown in  FIG. 4 , the inner tubular sidewall  16  comprises a side sealing layer  17  and a sleeve  18 . The sleeve  18  is positioned radially outward from the side sealing layer  17 . In the illustrated embodiment, the side sealing layer  17  extends axially above the sleeve  18 . In the illustrated embodiment, the sleeve  17  extends below the side sealing layer  17 . Along the hold  7 , and extending below the hold  7 , the sleeve  18  includes a sleeve sidewall  71 . Both of the side sealing layer  17  and the sleeve sidewall  71  are coaxial or substantially coaxial with the axis. The sleeve sidewall  71  is radially outward of, and overlapping at least part of, the side sealing layer  17 . 
     The inner bottom wall  23 , in this embodiment, is multilayered and includes a bottom sealing layer  25  and the sleeve  18 . More specifically, a sleeve floor  76  of the sleeve  18  defines a bottom of the inner bottom wall  23  (e.g., the boundary layer with the vacuum chamber  36 ). Both of the bottom sealing layer  25  and the sleeve floor  76  are orientated orthogonal or substantially orthogonal with respect to the axis. The bottom sealing layer  25  is located above the sleeve floor  76  along the axis. In this embodiment, the side sealing layer  17  is directly connected to the bottom sealing layer  25 , which may be the same contiguous piece of metal or may be formed separately and then joined. 
     An inner cup  40  is formed by the side sealing layer  17  being connected to the bottom sealing layer  25 . The inner cup  40  directly holds the beverage or holds the disposable container that contains the beverage. 
     An outer cup  80  is formed by the sleeve sidewall  71  being directly connected to the sleeve floor  76 , which may be the same contiguous piece of metal or may be formed separately and then joined. The outer cup  80  does not directly hold the beverage or similar disposable beverage container. The inner cup  40  is partially contained within the outer cup  80 . The outer cup  80  extends below the inner cup  40  and the inner cup  40  extends above the outer cup  80 . The outer cup  80  is radially wider than the inner cup  40 . In this embodiment, the outer cup  80  narrows at shoulder  19  to form joint  43  with the exterior of the inner cup  40 . The joint  43  may be an annular weld. The outer cup  80  is attached to the inner cup  40 . The outer cup  80  may only contact the inner cup  40  at the joint  43 , which is above the shoulder  19 . The outer cup  80  hangs from the inner cup  40 . The outer cup  80  may only be supported by the inner cup  40 . 
     Between the inner cup  40  and the outer cup  80  is a sealed media chamber  70 . The sealed media chamber  70  is formed by the inner cup  40  and the outer cup  80 . In this embodiment, the sealed media chamber  70  is formed only by the inner cup  40  and the outer cup  80 . The sealed media chamber  70  is radially between the side sealing layer  17  and the sleeve sidewall  71 . The sealed media chamber  70  is axially between the bottom sealing layer  25  and the sleeve floor  76 . The sealed media chamber  70  itself forms a cup shape, having cylindrical walls and a floor. The sealed media chamber  70  can be sealed by the shoulder  19  tapering the radius of the sleeve  18  to contact the side sealing layer  17  and/or otherwise make joint  43 . Joint  43  is an annular, sealed connection. The sleeve  18  is not relied upon to seal the vacuum chamber  36  from atmosphere. Rather, the sleeve  18  seals the media  72  within the sealed media chamber  70  from the vacuum chamber  36 , thereby maintaining the vacuum chamber  36  but not from atmosphere. Likewise, joint  43  maintains the vacuum chamber  36  from the media  72 , but not from atmosphere. 
     The sealed media chamber  70  comprises a radial part that is located directly radially between the hold  7  and the vacuum chamber  36 , and an axial part that is located directly axially between the hold  7  and the vacuum chamber  36 . 
     The sealed media chamber  70  is filled with media  72 . Media  72  can be a liquid and/or a gel. The media  72  may be non-structure (unlike a wall or a floor). The sealed media chamber  70 , as well as the media  72  therein, surrounds the inner cup  40 . More specifically, the sealed media chamber  70 , and the media  72 , are entirely radially around (360 degrees) the inner cup  40  for a portion of the height of the inner cup  40 . Sealed media chamber  70  and the media  72  are axially directly below the inner cup  40 . Joint  43  (and corner  20  if it represents a junction of two pieces) creates a fluid tight seal that keeps the media  72  within the sealed media chamber  70  so that it does not infiltrate the vacuum chamber  36 . 
     The sealed media chamber  70 , as well as the media  72  therein, surrounds the inner cup  40 . More specifically, the sealed media chamber  70 , and the media  72 , are entirely radially around the inner cup  40 . Sealed media chamber  70  and the media  72  are axially directly below the inner cup  40 . The vacuum chamber  36  extends from above the sealed media chamber  70  and the media  72  to below the sealed media chamber  70  and the media  72  while be radially entirely around the sealed media chamber  70  and the media  72 . More specifically, the vacuum chamber  36  is directly axially above the sealed media chamber  70  and the media  72  and directly axially below the sealed media chamber  70  and the media  72 . 
     As shown, the sleeve sidewall  71  is axially longer than the side sealing layer  17 , so that the sealed media chamber  70  (and outer cup  80 ) is taller, and more specifically deeper, relative to the inner cup  40 . The sealed media chamber  70  hangs from, and below, the inner cup  40 . The sealed media chamber  70  (and outer cup  80 ) is wider than the inner cup  40 . 
     The volume of the outer cup  80  (minus the volume of the inner cup  40 ) may be at least 25% of the volume of the inner cup  40 . The volume of the outer cup  80  (minus the volume of the inner cup  40 ) may be at least 50% of the volume of the inner cup  40 . 
     The vacuum chamber  36  can entirely insulate the sealed media chamber  70  from conduction loss except for loss through the inner cup  40  (e.g., via the opening  5 ) or along the neck  22 . The vacuum chamber  36  extends radially around the sealed media chamber  70 . The vacuum chamber  36  extends axially directly above and below the sealed media chamber  70  to further isolate the sealed media chamber  70  as a thermal reserve  37 . 
     The thermal reserve  37  can be formed by the media  72  within the sealed media chamber  70 . The thermal reserve  37  can thermally stabilize the temperature of the beverage by sinking heat from the beverage to counteract ambient heating of a cold beverage or transferring heat to a warm beverage to counteract heat loss of the warm beverage. The media  72  can yield higher heat sinking performance as compared to the thermal reserve  37  being solid metal due to the media  72  having higher capacity than solid metal. For example, water has one of the highest heat capacities of all stable liquids, and significantly higher than that of essentially all metals, by weight. Accordingly, the media  72  can contain water. In various embodiments, the media  72  includes food grade antifreeze agent with water, such as propylene glycol, to lower the freezing point of the media  72  to allow the media  72  to be brought below what would freeze water to provide a thermal sink with even more capacity. The addition of propylene glycol or other antifreeze agent with water can also raise the boiling point of the water, to allow the thermal reserve to be heated as previously described without boiling. The ratio of water to propylene glycol or other antifreeze agent may be 50:50 or similar mixture, which at 50:50 would provide protection from freezing down to about −30 degrees Fahrenheit and protection from boiling to about 210 degrees Fahrenheit, allowing the media  72  to be well below freezing or near boiling temperature to provide substantial cooling or heating to the beverage. If in the form of a gel, then a liquid can be prepared containing water and an anti-freeze agent such as propylene glycol, and further mixed with hydroxyethyl cellulose, sodium polyacrylate, or vinyl-coated silica, amongst other options gelling options to the liquid solution. 
     During manufacture, the mass and heat capacity of the thermal reserve may prevent boiling of the media  72  long enough to allow the plug  31  to melt and seal the port  30 . This is despite the plug  31  melting at a temperature higher than the boiling temperature of the media  72 , being that the mass of the plug  31  is substantially smaller than the mass of the media  72 , and the plug  31  being located axially away from the media  72 . 
     In the illustrated embodiment, the sleeve  18  is not relied upon to seal the vacuum chamber  36  from the atmosphere. Rather, the sleeve  18  seals the media  72  within the sealed media chamber  70  from the vacuum chamber  36 . The sleeve sidewall  71  separates and seals both of the vacuum chamber  36  and the media chamber  70 . The side sealing layer  17  separates and seals both of the media chamber  70  and the vacuum chamber  36 , relative to the hold  7 . 
     Starting from the axis (e.g., at a middle point along the axis) and extending radially outward orthogonal to the axis, the container body  2  includes, in order, a hold  7 , a side sealing layer  17 , sealed media chamber  72  containing media  72 , sleeve sidewall  71 , vacuum chamber  36 , and outer tubular sidewall  15 . Starting from the axis (e.g., at a middle point along the axis) and extending radially outward orthogonal to the axis, the container body  2  includes, in order, hold  7 , inner cup  40 , sealed media chamber  72  containing media  72 , outer cup  80 , vacuum chamber  36 , and outer tubular sidewall  15 . Along the axis (e.g., at a middle point along the axis) and extending downward along the axis, the container body  2  includes, in order, hold  7 , bottom sealing layer  25 , sealed media chamber  72  containing media  72 , sleeve floor  76 , vacuum chamber  36 , and outer bottom wall  24  (which may include port  30  and plug  31  although these components may not be aligned with the axis), and a shoe  4  (although the shoe  4  may be optional). Along the axis (e.g., at a middle point along the axis) and extending downward along the axis, the container body  2  includes, in order, hold  7 , inner cup  40 , sealed media chamber  72  containing media  72 , outer cup  80 , vacuum chamber  36 , and outer bottom wall  24  (which may include port  30  and plug  31  although these components may not be aligned with the axis), and in some embodiments a shoe  4  although the shoe  4  may be optional. Various coatings, such as paint and/or radiant heat reflective coatings amongst others, may be provided on the various surfaces. 
     It is noted that the embodiments presented herein can cool or heat a beverage, and/or stabilize the temperature of the beverage, without ice packs, ice, or cold and/or hot parts being inserted into the container body  2 , into the hold  7 , or radially inward of the side sealing layer  17  (except the beverage and prepackaged beverage canister  10 ). Such inserts would mean multiple parts that risk being lost, assembled incorrectly by the user, and provides extra surfaces and crevices and gaps that need to be washed or otherwise could harbor beverage remnants. Furthermore, no non-consumable heating or cooling elements (sealed ice or gel packs, stones for heating or cooling, electric heating or cooling elements, or other artificial materials) are placed into the hold  7  (i.e. directly radially inward of the side sealing layer  17 ) to heat, cool, or otherwise stabilize the temperature of the beverage within the hold  7 , except the beverage itself. The container body  2  may have multiple components but, in various embodiments, all components are permanently fixed with respect to each other so that the container body  2  is a discrete single piece, and that in use, no part of the container body  2  is removed or added, including the part(s) that form the thermal reserve  37 . The ability to cool a beverage without added ice means that the beverage is not watered down. 
     The groove  50  bulges inward to be directly above the inner cylindrical portion  29  (and the sealed media chamber  70 ). The groove  50  bulging in this location takes advantage of the neck  22  being radially thinner than the trunk  21 , such that the groove  50  radially overlaps with the neck  22 . In this embodiment, the groove  50  also radially overlaps with the shoulder  19 . The groove  50  indents into the vacuum chamber  36 . The groove  50  is annular about the entirety of the cylindrical body  2 . The groove  50  serves as a grip into which one or more fingers can extend into to enhance the user&#39;s grip on the beverage container  1 . The groove  50  is located above the center of mass of the beverage container  1 , and in particular above the trunk  21  and puck  26 , so that the majority of the weight of the beverage container  1  hangs below this groove  50 . In this way, moving the beverage container  1  in the user&#39;s hand is less likely to spill due to the hanging weight being self-stabilizing, as compared to holding a weight below its center of mass. 
       FIGS. 5-7  show a different embodiment of a beverage container having a thermal reserve as compared to the embodiment of  FIGS. 1-4 . Details of the second embodiment that are redundant with the first embodiment will not be repeated, with the understanding that the details of the above discussion apply to the second embodiment. For example, shapes, materials, properties, functions, relationships, etc. of parts with common reference numbers (e.g., 2 and 102, or 18 and 118) are assumed to be the same (or at least applicable) between embodiments unless specifically stated or shown to be incompatible, and are not repeated for brevity. Likewise, options and alternative feature described in relation to the first embodiment should be understood as also being applicable to this second embodiment. 
       FIG. 5  shows a perspective view of a beverage container  101 . The beverage container  101  includes a container body  102 . The container body  102  includes a top end  103 , a bottom end  104 , and an exterior surface  108 . The bottom end  104  includes a shoe  109 . An annular lip  106  is located at the top of the container body  102 . The beverage container  101  includes an opening  105 , in this case defined by the annular lip  106 , to a hold  107 . 
       FIG. 6  shows an exploded view (not done during working life) and  FIG. 6  shows a cross sectional view of the beverage container  101  of  FIG. 5 . 
     The container body  102  includes an outer tubular sidewall  115  which defines the exterior surface  108 . The outer tubular sidewall  115  includes a lower taper  135  to fit into the shoe  109 . The container body  102  includes an inner tubular sidewall  116 . The inner tubular sidewall  116  defines the hold  107 . The inner tubular sidewall  116  includes a side sealing layer  117 , which can be the radially innermost layer of the inner tubular sidewall  116  which defines the hold  7  and directly contacts the beverage, and a sleeve  118 . The inner surface defining the hold  107  can be vertically straight such that the inner diameter of the hold  107  is constant, for a portion or the entirety, from a taper  151  to an inner bottom wall  123 . The outer bottom wall  124  can be connected to the outer tubular sidewall  115  by joint  134 . 
     The container body  102  is formed by the inner tubular sidewall  116  and the outer tubular sidewall  115  forming a vacuum chamber  136  radially there between, the inner bottom wall  123  and the outer bottom wall  124  further forming the vacuum chamber  136  axially there between. 
     The material that forms the inner tubular sidewall  116  bends to form lip  106  and bends further to form overhang  146 . An upper taper  145  in the outer tubular sidewall  115  fits within the overhang  146  to form joint  132 . Joint  132  is annular and can seal the vacuum chamber  136  from atmosphere. In an alternative embodiment, the material that forms the outer tubular sidewall  115  bends to form lip  106  (instead of the inner tubular sidewall  116 ) and bends further to form overhang  146  on the inside of the hold  7 . 
     The taper  151  is formed in the inner tubular sidewall  116 , on the top end  103  of the container body  102 . The taper  151  defines a change in thickness of the inner tubular sidewall  116 , which is thinner above the taper  151  to form neck  122  and thicker below the taper  151  to form trunk  121 . In this embodiment, the taper  151  also corresponds with a change in diameter of the hold  107  axially along the taper  151 . In this case, the hold  107  widens in the upward direction along the taper  151 . Due to the taper  151 , part of the hold  107  is directly axially above the inner cylindrical portion  129  and the trunk  121 . The neck  122  can extend from the taper  151  to the lip  106 . The neck  122  can extend from the joint  174  to the opening  105 . 
     The vacuum space of the vacuum chamber  136  is both above the inner cylindrical portion  129  and directly axially below the inner cylindrical portion  129 . 
     A plug  131  within a port  130  of the outer bottom wall  124  can seal the vacuum chamber  136  during manufacturing, as previously described. The port  130  may be in dimple  139  of the outer bottom wall  124 . A joint  133  is formed as an annular interface between the shoe  109  and the outer tubular sidewall  115  where the lower taper  135  inserts into shoe  109 . 
     In this embodiment, the inner tubular sidewall  116  is formed from multiple layers. Such layers include a side sealing layer  117  and a sleeve  118 . The inner tubular sidewall  116  is attached to an inner bottom wall  123  that defines the floor of the hold  107 . More particularly, the side sealing layer  117  is attached the bottom sealing layer  125 . The hold  107  is sealed for holding the beverage by the side sealing layer  117  and the bottom sealing layer  125  to form inner cup  140 . The inner cup  140  holds the beverage by directly contacting the beverage. 
     The sleeve  118  in this embodiment includes a sleeve sidewall  171  and a sleeve floor  176 . The sleeve sidewall  171  is attached to the side sealing layer  117  at joint  174 . The joint  174  is an annular seal and connects the top of the outer cup  180  to the inner cup  140 , or more particularly the top of the sleeve sidewall  171  to the side sealing layer  117 . The joint  174  is below the neck  122 . The neck  122  can extend upwards from the joint  174  to the lip  106 . An inner cylindrical portion  129  can be defined as extending from one or both of the joint  174  and the taper  151 , on its upper end, to corner  120  on its lower end. The outer tubular sidewall  115  can define an outer cylindrical portion  128 . The inner cylindrical portion  129  and outer cylindrical portion  128  can have the relationships described in connection with other embodiments. 
     The inner bottom wall  123  is multilayered in this embodiment. The layers of the inner bottom wall  123  includes a bottom sealing layer  125  and the sleeve floor  176 . 
     The sleeve sidewall  171  is directly connected to the sleeve floor  176  to form outer cup  180 . Between the inner cup  140  and the outer cup  180  is formed sealed media chamber  170 . The sealed media chamber  170  contains media  172 . The media  172  can be as described elsewhere herein and serves as a thermal reserve  137  which can function as described elsewhere herein to stabilize the temperature of a beverage within the hold  107 . 
     It is noted that part of the hold  107  is directly axially above the sealed media chamber  170  (and the media  172 ) due to the taper  151 . Also, the sealed media chamber  170  and the media  172  are directly below the side sealing layer  117  and the inner cup  140 . 
     The inner tubular sidewall  116  and inner bottom wall  123 , including the thermal reserve  137 , both hang within the vacuum chamber  136  from the neck  122 . No supporting structure bridges across the vacuum chamber  136  to support the inner tubular sidewall  116 , the inner bottom wall  123 , and the thermal reserve  137 , except to the extent that the inner tubular sidewall  116  hangs on neck  122 . In this embodiment, the inner bottom wall  123  is only in contact with the inner tubular sidewall  116  (except for the beverage and/or prepackaged beverage canister in the hold  107 ). The inner tubular sidewall  116  is only in contact (indirectly or directly) with the outer tubular sidewall  115  at joint  132 . 
       FIGS. 8-10  show a different embodiment of a beverage container having a thermal reserve as compared to the previous embodiments. Details of this third embodiment that are redundant with the one or both of the previous embodiments may not be repeated, with the understanding that the details of the above discussion apply to the third embodiment. For example, shapes, materials, properties, functions, relationships, etc. of parts with common reference numbers (e.g., 2, 102, 202, or 28, 118, 218) are assumed to be the same (or at least applicable) between embodiments unless specifically stated or shown to be incompatible, and are not repeated for brevity. Likewise, options and alternative feature described in relation to the first and/or second embodiments should be understood as also being applicable to this third embodiment. 
       FIG. 8  shows a perspective view of a beverage container  201 . The beverage container  201  includes a container body  202 . The container body  202  includes a top end  203 , a bottom end  204 , and an exterior surface  208 . The bottom end  204  includes a shoe  209 . An annular lip  206  is located at the top of the container body  202 . The beverage container  201  includes an opening  205  into a hold  207 . 
       FIG. 9  shows an exploded view (not done during working life) and  FIG. 10  shows a cross sectional view of the beverage container  201  of  FIG. 8 . 
     The container body  202  includes an outer tubular sidewall  215  which defines the exterior surface  208 . The outer tubular sidewall  215  includes a lower taper  235  to fit into the shoe  209 . The container body  202  includes an inner tubular sidewall  216 . The inner tubular sidewall  216  defines part of the hold  207 . The inner tubular sidewall  216  includes a side sealing layer  217 , which can be the radially innermost layer of the inner tubular sidewall  216  which directly contacts the beverage, and a sleeve  218  radially outward of the side sealing layer  217 . The outer bottom wall  224  can be connected to the outer tubular sidewall  215  by joint  234 . 
     The container body  202  is generally formed by the inner tubular sidewall  216  and the outer tubular sidewall  215  forming a vacuum chamber  236  radially there between, and the inner bottom wall  223  and the outer bottom wall  224  further forming the vacuum chamber  236  axially there between. 
     The material that forms the inner tubular sidewall  216  bends to form lip  206  and bends further to form overhang  246 . An upper taper  245  in the outer tubular sidewall  215  fits within the overhang  246  to form joint  232 . Joint  232  is annular and can seal the vacuum chamber  236  from atmosphere. In an alternative embodiment, the material that forms the outer tubular sidewall  215  bends to form lip  206  (instead of the inner tubular sidewall  216 ) and bends further to form overhang  246  on the inside of the hold  7 . 
     The taper  251  is formed in the inner tubular sidewall  216 , on the top end  203  of the container body  202 . The taper  251  defines a change in thickness of the inner tubular sidewall  216 , which is thinner above the taper  251  to form neck  222  and thicker below the taper  251  to form trunk  221 . In this embodiment, the taper  251  also corresponds with a change in diameter of the hold  207  axially along the taper  251 . In this case, the hold  207  widens in the upward direction along the taper  251 . Due to the taper  251 , part of the hold  207  is directly axially above the inner cylindrical portion  229 , the sleeve  218 , and the trunk  221 . The neck  222  extends from the taper  251  to the lip  206 . The neck  222  can extend from the joint  218  to the opening  205 . The vacuum space of the vacuum chamber  236  is both above the inner cylindrical portion  229  and directly axially below the inner cylindrical portion  229 . 
     A plug  231  within a port  230  of the outer bottom wall  224  can seal the vacuum chamber  236  during manufacturing, as previously described. The port  230  may be in dimple  239  of outer bottom wall  224 . A joint  233  is formed as annular interface between the shoe  209  and the outer tubular sidewall  215  where the lower taper  235  inserts into shoe  209 . 
     In this embodiment, the inner tubular sidewall  216  is formed from multiple layers. Such layers include a side sealing layer  217  and a sleeve  218 . The inner tubular sidewall  216  is attached to an inner bottom wall  223  that defines the floor of the hold  207 . More particularly, the side sealing layer  217  is attached the bottom sealing layer  225 . The hold  207  is sealed by the side sealing layer  217  and the bottom sealing layer  225  to form inner cup  240 . The inner cup  240  holds the beverage by directly contacting the beverage. 
     The sleeve  218  in this embodiment does not include a floor. The sleeve  218  is attached to the side sealing layer  217  at joint  281 . The joint  281  bonds the top of the sleeve  218  to the side sealing layer  217 , in either a continuous bond or spot bond annularly. Joint  281  can be, for example, welding. The joint  281  can be below the neck  222 . In this way, the neck  222  can defined as extending upwards from the joint  281  to the lip  206 . An inner cylindrical portion  229  can be defined as extending from one or both of the joint  281  and the taper  251 , on its upper end, to corner  220  on its lower end. The outer tubular sidewall  215  can define an outer cylindrical portion  228 . The inner cylindrical portion  229  and outer cylindrical portion  228  can have the relationships described in connection with other embodiments. 
     In this embodiment, the sleeve  218  does not extend below the bottom sealing layer  225 . The thermal reserve  237  of the inner bottom wall  223  can be formed by the inner bottom wall  223  having multiple layers. In the embodiment, the inner bottom wall  223  has a bottom sealing layer  225  and a puck  226 . The puck  226  is positioned axially below the bottom sealing layer  225 . The puck  226  is radially wider than the bottom sealing layer  225 , however in various other embodiments the puck  226  is radially narrower than the bottom sealing layer  225 . 
     The bottom sealing layer  225  may seal the bottom of the vacuum chamber  236 . In the illustrated embodiment, the puck  226  is not relied upon to seal the vacuum chamber  236 . The puck  226  is either directly connected to the bottom sealing layer  225  and/or to the sleeve  218 . In this embodiment, the puck  226  is directly connected to the sleeve  218  by joint  244 . Joint  244  may be a continuous (e.g., annular) or multipoint bond, such as with adhesive or welding. 
     In this embodiment, the puck  226  hangs below the bottom sealing layer  225 . The puck  226  may be adjacent to the bottom side of the bottom sealing layer  225  such that the material (e.g., metal) of the puck  226  contacts the material (e.g., metal) of the bottom sealing layer  225 . The puck  226  may only contact the bottom sealing layer  225  and/or the sleeve  218 , any may not directly contact any other structures. The puck  226  may not be directly supported by any other component except the inner cup  240 . 
     The puck  226  is axially thicker than the bottom sealing layer  225 . The puck  226  can be at least two, three, five, or ten times axially thicker than the bottom sealing layer  225 . The puck  226  in this embodiment includes a chamfer along corner  220  to accommodate bends in the outer bottom wall  24 . The puck  226  can be disc shaped. 
     In various embodiments, the sleeve  218  is not present, and the puck  226  entirely forms the thermal reserve  237 . In such case, the puck  226  can be directly connected to the bottom of the inner cup  240 , such as bottom sealing layer  225 . In various other embodiments, a sleeve  218  is present radially to the side of the inner cup  240 , while no puck  226  is present, such that the sleeve  218  entirely forms the thermal reserve  237 . 
     One or both of the sleeve  218  and the puck  226  may be entirely solid. For example, one or both of the sleeve  218  and the puck  226  may be formed from a single piece or type of metal, respectively. Alternatively, the sleeve  218  and/or the puck  226  may have a metal and/or polymer exterior shell and seal media (e.g., liquid or gel as previously described) within, sealed from the vacuum chamber  236 . As such, each of the sleeve  218  and/or the puck  226  may define separate sealed media chambers filled with media as previously described. 
       FIGS. 11-13  show a different embodiment of a beverage container having a thermal reserve as compared to the previous embodiments. Details of this embodiment that are redundant with the first, second, and/or third embodiments or other embodiments may not be repeated, with the understanding that the details of the above discussion apply to the fourth embodiment. For example, shapes, materials, properties, functions, relationships, etc. of parts with common reference numbers (e.g., 3, 302, 302, 302, or 37, 337, 337, 337) are assumed to be the same (or at least applicable) between embodiments unless specifically stated or shown to be incompatible, and are not repeated for brevity. Likewise, options and alternative feature described in relation to the first embodiment or other embodiments should be understood as also being applicable to this fourth embodiment. 
       FIG. 11  shows a perspective view of a beverage container  301 . The beverage container  301  includes a container body  302 . The beverage container  301  is in the style of a stemless wine glass. The container body  302  includes a top end  303 , a bottom end  304 , and an exterior surface  308 . The bottom end  304  includes a shoe  309 . An annular lip  306  is located at the top of the container body  302 . The beverage container  301  includes an opening  305 , in this case defined by the annular lip  306 . Within the container body  302  is a hold  307  for containing a beverage. 
       FIG. 12  shows an exploded view (not done during working life) while  FIG. 13  shows a cross sectional view of the beverage container  301  of  FIG. 11 . 
     The container body  302  includes an outer tubular sidewall  315 . The outer tubular sidewall  315  defines the exterior surface  308 . The outer tubular sidewall  315  is formed by an upper outer sidewall portion  354  and a lower outer sidewall portion  355 . The upper outer sidewall portion  354  and the lower outer sidewall portion  355  together define the exterior surface  308 . Each of the upper outer sidewall portion  354  and the lower outer sidewall portion  355  can be formed from respective pieces of metal. The upper outer sidewall portion  354  and the lower outer sidewall portion  355  may have the same radial thickness, or substantially the same radial thickness, between themselves and throughout their respective heights. The upper outer cylindrical sidewall portion  354  is connected to the lower outer sidewall portion  355  at joint  357 . 
     The container body  302  includes an inner tubular sidewall  316 . The material that forms the inner tubular sidewall  316  bends to form lip  306  and bends further to form overhang  346 . An upper taper  345  in the outer tubular sidewall  315  fits within the overhang  346  to form joint  332 . The inner tubular sidewall  316  defines the hold  307 . A cylindrical surface defines part of the interior of the hold  307 . This surface can be the inside of the inner tubular sidewall  316 , and more specifically the side sealing layer  317 . This surface can contact the beverage. The hold  307  is further defined by the inner bottom wall  323 . The inner bottom wall  323  may also contact the beverage. The inner tubular sidewall  316  and the inner bottom wall  323  together form an inner cup  340  which can hold the beverage. 
     The container body  302  is generally formed by the inner tubular sidewall  316 , the outer tubular sidewall  315 , the inner bottom wall  323 , and the outer bottom wall  324 . Within and between these structures is formed a vacuum chamber  336 . The vacuum chamber  336  is tubular about the hold  307  between the inner tubular sidewall  316  and the outer tubular sidewall  315 . The vacuum chamber  336  further includes a planar section axially between the inner bottom wall  323  and the outer bottom wall  324 . In another sense, the vacuum chamber  336  is formed radially between the inner tubular sidewall  316  and the outer tubular sidewall  315 , and is formed axially between the inner bottom wall  323  and the outer bottom wall  324 . The outer bottom wall  324  can be connected to the outer tubular sidewall  315  by joint  334 . Joint  334  can be an annular airtight seal to maintain the vacuum chamber  336 . 
     The inner tubular sidewall  316  can include an inner cylindrical portion  329 . The outer tubular sidewall  315  can include an outer cylindrical portion  328 . 
     In this embodiment, the inner tubular sidewall  316  is formed from multiple layers. Such layers include a side sealing layer  317  and a sleeve  318 . The inner tubular sidewall  316  is attached to an inner bottom wall  323  that defines the floor of the hold  307 . More particularly, the side sealing layer  317  is attached the bottom sealing layer  325  (and may be a contiguous material in various embodiments). The hold  307  is sealed by the side sealing layer  317  and the bottom sealing layer  325  to form inner cup  340 . The inner cup  340  holds the beverage by directly contacting the beverage. The side sealing layer  317  is attached to an inner bottom wall  323  that defines the floor of the hold  307 . 
     The sleeve  318  in this embodiment includes a sleeve sidewall  371  and a sleeve floor  376 . The inner bottom wall  323  includes a bottom surface  348  that faces axially downward, into the vacuum chamber  336 . The bottom surface  348  may be formed by the sleeve floor  376 . 
     A shoulder  319  is formed by ring  373 . Ring  373  is mounted on the inner cup  340 . More specifically for this embodiment, the ring  373  is mounted on the side sealing layer  317 . The ring  373  extends orthogonal to the side sealing layer  317 , however other orientations are possible. An inner side of the ring  373  is connected to the side sealing layer  317  by joint  374 . The top of the sleeve  318  is attached to the ring  373 . An outer side of the ring  373  is connected to the sleeve  318  at joint  375 . Each of joint  374  and joint  375  can be annular bonds that seal the vacuum chamber  336  from the sealed media chamber  370 . 
     The joint  374  and the shoulder  319  can be below the neck  322 . In this way, the neck  322  can be defined as extending upwards from the joint  374  and/or the shoulder  319  to the lip  306  and/or the opening  305 . An inner cylindrical portion  329  can be defined as extending from one or both of the joint  374  and the shoulder  319 , on its upper end, to corner  320 . 
     The sleeve sidewall  371  is directly connected to the sleeve floor  376  to form outer cup  380 . The inner cup  340  is attached to the outer cup  380  at the joint  374  via the ring  373  (and only directly at the joint  373  via the ring  373 ). Between the inner cup  340  and the outer cup  380  is formed sealed media chamber  370 . The sealed media chamber  370  contains media  372 . The media  372  can be as described elsewhere herein and serve as a thermal reserve  337  which can function as described elsewhere herein to stabilize the temperature of a beverage within the hold  307 . 
     It is noted that part of the vacuum chamber  336  is directly axially above the shoulder  319  (and the sealed media chamber  370  and the media  372 ) due to the shoulder  319  projecting the trunk  321  radially into the vacuum chamber  336 . Likewise, part of the vacuum chamber  336  is directly axially below the corner  320  and the sleeve floor  376 . 
     It is noted that joint  357  between the upper outer cylindrical sidewall portion  354  and the lower outer sidewall portion  355  is located above the joint  374  and joint  375  to allow joint  374  and joint  375  to be made while the upper outer cylindrical sidewall portion  354  is in place but before the lower outer sidewall portion  355  is attached to the upper outer sidewall portion  354 , which would otherwise block the making of one or both of joint  374  and joint  375 . 
     A plug  331  within a port  330  of the outer bottom wall  324  can seal the vacuum chamber  336  during manufacturing, as previously described. The port  330  may be formed in a dimple  339  of the outer bottom wall  324 . A joint  333  is formed as annular interface between the shoe  309  and the outer tubular sidewall  315 . The outer bottom wall  324  can be connected to the outer tubular sidewall  315  by joint  334 . 
     The following embodiment demonstrates features useable with disposable cups. Hot and cold drinks are commonly served in disposable paper or plastic cups. For example, paper cups (sometimes with an inner wax or polymer liner) are often used for serving hot drinks (e.g., coffee, expresso, cappuccino, and tea), and also cold drinks (e.g., cola and beer), with the intention that the paper cups are recycled, trashed, or otherwise disposed of and not reused. Plastic cups (having a widening opening, as distinct from a bottle having a narrowed opening) are often used for serving cold beverages such as water, cola, and beer, again with the intention that the cups are recycled, trashed, or otherwise disposed of and not reused. These paper and plastic cups are relatively poor insulators due to their inexpensive nature, leading to premature cooling or warming of the beverage which itself was often purchased as a premium drink (e.g., at premium coffee stores or at fast food restaurants). The beverage can be poured directly into a vacuum insulated beverage container from the disposable cup to minimize thermal transfer from the beverage over time, but that is impractical in many circumstances, such as with drive-throughs, long lines, and pre-poured beverages. The following embodiment concerns various options for holding a disposable cup in a vacuum insulated container. 
     Details of this embodiment ( FIGS. 14-18 ) that are redundant with any of the previous embodiments will not be repeated, with the understanding that the details of the above discussion can apply to the fifth embodiment. For example, shapes, materials, properties, functions, relationships, etc. of parts with common reference numbers (e.g., 2, 102, 202, 302, 402 or 15, 115, 215, 315, 415, etc.) are assumed to be the same (or at least applicable) between embodiments unless specifically stated or shown to be incompatible, and are not repeated for brevity. Likewise, options and alternative feature described in relation to any of the previous embodiments should be understood as also being applicable to this fifth embodiment. This fifth embodiment of a container body  402  does not include a thermal reserve, however various other embodiments may include a thermal reserve, and a thermal reserve can be added according to any type referenced herein. 
       FIG. 14  shows a perspective view of a beverage container  401 . The beverage container  401  includes a container body  402 . The container body  402  includes an exterior surface  408 , which can be cylindrical. In some embodiments, the container body  402  includes a handle extending laterally from its side. The container body  402  includes a top end  403  and a bottom end  404 . The bottom end  404  includes a shoe  409  which supports the beverage container  401 , and on which the beverage container  401  rests. 
     The beverage container  401  includes a cap  411 . The cap  411  can be a disc. The cap  411  is selectively mounted to the top end  403  of the container body  402 . While not shown in  FIG. 14 , but shown in subsequent images, the beverage container  401  includes a disposable cup  478  located within the container body  402 , underneath the cap  411 . The cap  411  includes an outer ring  461 . The cap  411  includes an upper lip  462 , which the user&#39;s mouth typically engages for drinking. The outer ring  461  is same diameter the upper lip  462 , in this embodiment, and both may be part of the same ring. The cap  411  can be used with the previous container embodiments. 
     The outer ring  461  extends below the ceiling  463 . Spanning within the outer ring  461  is ceiling  463 . The upper lip  462  is located above the ceiling  463 . The upper lip  462  can be the top end of the outer ring  461 . Extending through ceiling is outlet aperture  459  through which beverage can flow from inside to the beverage container  401  to outside for consumption. 
       FIG. 15  shows the disposable cup  478  having been removed from the beverage container  401 . The removal of the disposable cup  478  exposes a hold  407  which is an inner cavity configured for containing a beverage one or both of directly or within the disposable cup  478 . An annular lip  406  is located at the top of the container body  402 , defining an opening  405 . When the cap  411  is mounted on the container body  402 , the ceiling  463  can be positioned directly above the opening  405  and the hold  407 . 
     The disposable cup  478  typically has a rim  458  on the top of the disposable cup  478 , such as a rolled lip which is thicker (radially and/or axially) than the main body of the disposable cup  478 . The rim  458  can be above the rest of the disposable cup  478 . The rim  458  can be located radially outward of the rest of the disposable cup  478  (e.g., the rim  458  has the greatest diameter of the disposable cup  478 ). The disposable cup  478  is rigid and free standing and does not need to be supported when filled with a beverage, and thus is not floppy, a sack, or a mere liner. The floor of the disposable cup  478  is flat and the sidewall is tubular frustoconical. 
     The cap  411  can be mounted and fastened on the container body  402 . The cap  411  can be fastened to the container body  402  by fastening  413 . In this embodiment, the fastening  413  is threading on the interior of the outer ring  461  of the cap  411  which engages complementary threading located on the exterior surface  308  of the container body  402 . Other fastening options besides threading are possible, such as press-fit, latch, and bayonet attachment features, for fixing the cap  411  on the container body  402 . 
     In use, a disposable cup  478  containing a hot or cold beverage is placed within the hold  407  of the beverage container  401  when the cap  411  is not covering the opening  405  (e.g., the cap  411  is dismounted from the container body  402 ). Then when the disposable cup  478  is within the hold  407 , the cap  411  is placed over the opening  405  and connected to the top container body  402 , such as by engaging fastening  413  or other means of fastening the cap  411  to the top container body  402 . The beverage can then be consumed through the outlet aperture  459 . After the beverage is consumed, the cap  411  can be dismounted from the container body  402 , such as by disengaging fastening  413 . The first disposable cup  478  can then be removed from the hold  407  and then discarded. A new disposable cup  478  with more beverage can be placed in the hold  407 , the cap  411  remounted, and the process repeated. 
       FIG. 16  shows an exploded view of the container body  402 . While the disassembly shown in  FIG. 15  would be common for exchanging disposable cup  478 , the disassembly shown in  FIG. 16  would not be done during the working life of the container body  402 . As shown, the container body  402  is formed from a plurality of nested tubes. The tubes are typically coaxial about a vertical axis and radially overlapping when assembled. 
     As shown in  FIG. 16 , the container body  402  includes an outer tubular sidewall  415 . The outer tubular sidewall  415  defines the exterior surface  408 . The outer tubular sidewall  415  can be formed from a single piece of metal. In the illustrated embodiment, the outer tubular sidewall  415  includes a lower taper  435  which is a reduction in outer diameter to fit into the shoe  409 . 
     The container body  402  includes an inner tubular sidewall  416 . The inner tubular sidewall  416  defines the hold  407 . In this embodiment, the inner tubular sidewall  416  is formed from one layer, however multilayer embodiments are possible, as previously shown herein. The walls of the container body  402  can be formed from metal. The outer tubular sidewall  415  can include an upper taper  445  to fit into an overhang  446  of inner tubular sidewall  416 . Joint  432  can attach and seal the inner tubular sidewall  416  to the outer tubular sidewall  415 . 
     The container body  402  can further comprise an outer bottom wall  424 . The outer bottom wall  424  is round. As further shown herein, the outer bottom wall  424  can interface with the outer metal sidewall  15  (e.g., the lower taper  435  specifically) to seal a vacuum chamber. 
       FIG. 17  shows the cap  411  in an exploded view, with the underside of the cap  411  facing upwards to show separation of an inner ring  460 . The inner ring  460  is typically fixed to the rest of the cap  411  in use. The inner ring  460  is further discussed herein. 
       FIG. 18  is a cross-sectional side view of the beverage container  401 . The beverage container  401  can be symmetric around the axis, so the two-dimensional view of  FIG. 18  represents the entire structure  3600  around the axis (except for outlet aperture  459 ). The axis corresponds with the long axis of the beverage container  401  as well as the disposable cup  478 . The axis is coaxial with the long axis of the beverage container  401  as well as the disposable cup  478 . The hold  407  is used to directly hold the disposable cup  478 . 
     The container body  402  comprises a sidewall  468 . The sidewall  468  is annular along the axis. The sidewall  468  defines both of the exterior surface  408  and the hold  407 . The sidewall  468  in this embodiment is multilayered. More specifically, the sidewall  468  is formed by the outer tubular sidewall  415  and the inner tubular sidewall  416 , including the vacuum chamber  436  there between. In various embodiments, the sidewall  468  is formed by a single wall (e.g., not double sidewall as shown) and/or does not include a vacuum chamber. 
     In the illustrated embodiment, the container body  402  is formed by floor  469 . The floor  469  defines both a ground-contacting surface of the container body  402  as well as the bottom of the hold  407 . The floor  469  is multilayered in this embodiment. More specifically, the floor  469  includes shoe  409 , the outer bottom wall  424 , and an inner bottom wall  423 , including a vacuum chamber  436  between the outer bottom wall  424  and inner bottom wall  423 . In various embodiments, the floor  469  is formed by a single wall (e.g., not triple bottom wall as shown) and/or does not include a vacuum chamber. 
     The outer bottom wall  424  can be connected to the outer tubular sidewall  415  by joint  434 . A plug  431  within a port  430  of the outer bottom wall  424  can seal the vacuum chamber  436  during manufacturing. The port  430  may be in a dimple  439  in the outer bottom wall  424 . A joint  433  forms an annular interface between the shoe  409  and the outer tubular sidewall  415 . 
     The cap  411  includes an inner ring  460  and an outer ring  461 . As shown, the inner ring  460  is coaxial with the outer ring  461 . Also, the outer ring  461  radially overlaps the inner ring  460 , such that the inner ring  460  is radially within the outer ring  461 . Both of the inner ring  460  and the outer ring  461  are attached to the ceiling  463 . The ceiling  463  can span within the ring formed by the upper lip  462  and/or outer ring  461 . The ceiling  463  is shown as a single layer, but can be multi-walled. The inner ring  460  is mounted to the ceiling  463  and extends downward from the ceiling  463 . The outlet aperture  459  extends through the ceiling  463  to allow flow of the beverage from the hold  407  during when the beverage container  401  is partially or fully inverted for drinking. A closure  467  can seal the outlet aperture  459  to prevent escape of beverage out of the outlet aperture  459  unless the closure  467  is removed from the outlet aperture  459 . The closure  467  may be tethered to the ceiling  463 . The closure  467  may be press fit into the outlet aperture  459 , or may only cover the outlet aperture  459 . The closure  467  may be a polymer. 
     The cap  411  includes inner fastening  413  which interfaces with complementary outer fastening  413  of the container body  402 . More specifically in this embodiment, inner threading is located on the radial inside of the outer ring  461 . Rotating the cap  411  relative to the container body  402  in a first direction can secure the cap  411  to the container body  402 , trapping the disposable cup  478  within the hold  407 , such that the cap  411 , the container body  402 , and the disposable cup  478  become a single assembly. Rotating the cap  411  about the container body  402  in a second direction can unsecure and dismount the cap  411  from the container body  402 , allowing removal of the disposable cup  478  from within the hold  407 . 
     The cap  411  includes a cap body  487 . The cap body  487  can form most or all of the cap  411  in various embodiments. In this embodiment, the cap body  487  includes the ceiling  463 , the outer ring  461 , and the upper lip  462 , which are all formed from one contiguous piece of material (e.g., polymer). In this embodiment, the inner ring  460  is formed separately from the cap body  487  and then joined to the cap body  487  via fastener  483 , however the inner ring  460  can be part of the cap body  487  in various other embodiments. 
     In the illustrated embodiment, the fastener  483  comprises a first annular flange  488  on the top of the inner ring  460 . In the illustrated embodiment, the fastener  483  comprises a second annular flange  489  on the underside of the cap body  487 , or more narrowly on the underside of the ceiling  463 . The second annular flange  489  is located radially inside of the outer ring  461 . The first annular flange  488  interlocks with the second annular flange  489 . More specifically, the first annular flange  488  interfaces and axially overlaps with the second annular flange  489 . As shown, the first annular flange  488  is trapped axially between, and in contact with, the second annular flange  489  and the cap body  487  (or more specifically the ceiling  463 ). The interlocking holds the first annular flange  488  to the second annular flange  489 , and consequently, the inner ring  460  to the cap body  487 . This fastener  483  design may provide several benefits. It allows the inner ring  460  to rotate relative to the cap body  487 . Specifically, the first annular flange  488  can rotate relative to the second annular flange  489 . The fastener  483  design also seals the inner ring  460  to the cap body  487  to prevent leakage of beverage past the interface between the inner ring  460  and the cap body  487 . The seal is a labyrinth seal in that beverage would need to take multiple 90 degrees turns along interfacing parts to go from within the hold  407 , past the seal formed by fastener  483  (e.g., three or more turns). The first annular flange  488  is radially outward of the second annular flange  489 . This arrangement may be useful because the material forming the inner ring  460  may be more flexible, such that stretching the first annular flange  488  outward to fit around the second annular flange  489  locks the first annular flange  488  onto the second annular flange  489 , such that the first annular flange  488  would need to be stretched outward again to release from the second annular flange  489 . 
     It is noted that alternative designs for the fastener  483  is possible. For example, the cap body  487  may include an annular cavity, such as on the underside of the ceiling  463 , that a bulbous top part of the inner ring  460  is inserted into to form a press-fit connection that seals while supporting independent rotation of the inner ring  460 . 
     When the cap  411  is mounted on the container body  402 , the inner ring  460  extends through the opening  405  and into the hold  407  while the outer ring  461  extends along the exterior surface  408 . As shown, the inner ring  460  extends inside of the disposable cup  478 . In this way, part of the sidewall  468  is directly radially between the inner ring  460  and the outer ring  461 . More specifically, part of the sidewall  468  is directly radially outward of the inner ring  460  and the disposable cup  478  and directly radially inward of the outer ring  461 . Furthermore, part of the vacuum chamber  436  is directly radially between the inner ring  460  and the outer ring  461 . More specifically, part of the vacuum chamber  436  is directly radially outward of the inner ring  460  and the disposable cup  478  and directly radially inward of the outer ring  461 . As such, part of one or both of the outer tubular sidewall  15  and the inner tubular sidewall  16  are directly radially between the inner ring  460  and the outer ring  461 . 
     When the cap  411  is mounted on the top end  403  of the container body  402 , the inner ring  460  extends through the top opening of the disposable cup  478  and into the disposable cup  478 . The inner ring  460  engages an inner annular surface  494  of the disposable cup  478 . This forms an annular seal within the disposable cup  478  so that the beverage cannot pass between the inner annular surface  494  and the inner ring  460 , trapping the beverage between the disposable cup  478  and the cap  411 , such that the beverage can only exit through the outlet aperture  459 . The annular engagement that forms this seal is below the lip  406  and below the rim  458 . In various embodiments, the rim  458  is not pinched. For example, the rim  458  is not pinched axially and/or radially. No seal is made with the rim  458 , as distinguished from sealing to the rim with a conventional disposable lid that is mounted on the disposable cup  478  at sale. 
     As shown, the rim  458  is above, and separated, from the lip  406 . The rim  458  does not make contact with the lip  406 . In the particular embodiment, the rim  458  does not contact that container body  402  and does not contact the cap  411 . 
     As shown, the inner ring  460  engages the inner annular surface  494  inside of the disposable cup  478  to press the outside of the disposable cup  478  against the container body  402 . Specifically, the outside of the disposable cup  478  is pressed against the inside of the sidewall  468 . However, depending on the strength of the wall of the disposable cup  478  and its degree of outward deflection upon being pressed by the inner ring  460 , an annular engagement may be generated between the outside of the disposable cup  478  and the inside of the sidewall  468 , radially overlapping with the inner ring  460  and the inner annular surface  494 . 
     The inner ring  460  includes an annular projecting seal  484 . The annular projecting seal  484  is located on the radially outward surface of the inner ring  460 . The annular projecting seal  484  extends toward the outer ring  461 . In this case, the annular projecting seal  484  includes a plurality of annular ridges arrayed along the axis. Each ridge can engage the inner surface of the disposable cup  478  to seal with the inner surface of the disposable cup  478 . Multiple ridges are provided to generate redundant seals and also to axially spread out along the inner annular surface  494  to seat so that at least one seats in an ideal sealing area with the disposable cup  478  which may be useful with different sized and/or angled disposable cups. 
     The inner ring  460  includes an annular bend  482 . The annular bend  482  extends entirely around the inner ring  460 . The annular bend  482  may engage the annular inner surface of the disposable cup  478  to form the annular seal with the disposable cup  478 . The annular bend  482  may represent a change in diameter of the inner ring  460  between a larger diameter upper part and a smaller diameter lower part. A top diameter of the inner ring  460  is larger than a bottom diameter of the inner ring  460 . As shown, the lower part of the inner ring  460  is angled radially inward. The inwardly angled, narrower lower part may be easier to lead insertion into the disposable cup  478  while the wider annular bend  482  follows to wedge against the inner annular surface  494  of the disposable cup  478  to form the annular seal with the disposable cup  478 . 
     The inner ring  460  hangs down free from the cap body  487  and/or the ceiling  463 . At least the lower half of the inner ring  460  hangs free as a ring and is not connecting to any other parts of the cap  411 . There is no ceiling or floor that spans at least the lower half of the inner ring  460 . This allows the lower part of the inner ring  460  to bend to help create the annular seal. Also, in case the beverage level is particularly high, then dipping only the inner ring  460  into the beverage within the disposable cup  478  minimizes the displacement of the beverage by the cap  411  because the beverage can merely fill up the space within the inner ring  460 . 
     In this embodiment, the inner ring  460  is formed from a different material as the rest of the cap  411 . More specifically, the inner ring  460  is formed from a first type of material (e.g., polymer, such as polytetrafluoroethylene, silicone, or rubber) while the cap body  487  is formed by a second type of material (e.g., polymer, such as polycarbonate) that is different than the first type. The components formed from the second type of material may be the upper lip  462 , outer ring  461 , and/or ceiling  463 . The material that forms the inner ring  460  may be more flexible and/or softer than the material that forms the cap body  487  (e.g., the outer ring  461 , the ceiling  463 , and/or the upper lip  462 ). The more soft, flexible material of the inner ring  460  can provide better sealing with the inner annular surface  494  of the disposable cup  478 , while the material that forms the cap body  487  can be harder and stiffer to withstand impacts due to being external materials and securely grip the fastening  413 . The flexibility of the material of the inner ring  460  may allow the inner ring  460  to flex radially inwards when engaging and sealing with the disposable cup  478 , as shown, to conform to the particular size of the inner annular surface  494 . 
     Due to the fastener  483 , the inner ring  460  can rotate relative to the cap body  487  (e.g., the outer ring  461 , the ceiling  463 , and/or the upper lip  462 ), so that when the ceiling  463  and/or the outer ring  461  are rotated to engage and secure fastening  413 , the inner ring  460  does not necessarily have to likewise rotate to minimize pulling or tugging on the potentially delicate inner annular surface  494  of the disposable cup  478 . 
     The outer ring  461  is radially thicker than the inner ring  460 . The difference if material thickness allows the inner ring  460  to be flexible for sealing while the outer ring  461  is thicker to structurally mount on the container body  402 . The outer ring  461  extends below the inner ring  460 , however in various other embodiments the inner ring  460  extends below the outer ring  461 . 
     An annular cavity  464  is located in the cap  411 , radially between the inner ring  460  and the outer ring  461 . The annular cavity  464  is below the ceiling  463 , and may directly below the ceiling  463 . The annular cavity  464  is below the upper lip  462 . When the cap  411  is mounted on the tumble body  402 , the annular cavity  464  can be located directly above the sidewall  468 . When the cap  411  is mounted on the tumble body  402 , the annular cavity  464  can be located directly above the lip  406 . The annular cavity  464  can be defined radially by the inner ring  460  and the outer ring  461 . The top of the annular cavity  464  can be defined axially by the ceiling  463  or other part of the cap  411 . The bottom of the annular cavity  464  can be defined axially by the container body  402 , such as the sidewall  468  and/or lip  416  or other part of the container body  402 . The annular cavity  464  can be located directly above the vacuum chamber  436 . 
     The rim  458  of the disposable cup  478  is typically thicker than the sidewall of the disposable cup  478  and can serve several functions, such as structural reinforcement to maintain the round opening of the disposable cup  478 , as an engagement feature for the drinker&#39;s lips when drinking directly from the disposable cup  478 , and/or as a mounting feature for disposable lids. However, the rim  458  does not serve those purposes when used with the beverage container  401  so the annular cavity  464  provides a space to accommodate the rim  458 . 
     As shown, the annular cavity  464  provides a space for the top of the disposable cup  478 . For example, the annular cavity  464  provides space for the rim  458  of the disposable cup  478 . The annular cavity  464  can be radially wider (as measured by the radial separation distance between the inner ring  460  and the outer ring  461 ) than the rim  458  of the disposable cup  478  so that the rim  458  can be within the annular cavity  464  without being crushed or otherwise deformed. Within the annular cavity, the disposable cup  478  may not touch the surfaces of the cap  411  that define the annular cavity  464 . In particular, the rim  458  may not touch the surfaces of the cap  411  that define the annular cavity  464 . This protects the integrity of the disposable cup  478 , particularly the rim  458 , to avoid crushing or deforming that may otherwise tear or otherwise breach the disposable cup  478  and risk leaking of beverage. However, the rim  458  may contact the defining surfaces of the annular cavity  464  in various embodiments. 
     It is noted that the annular seal formed by the interface between the inner ring  460  and the inner annular surface  494  of the disposable cup  478  is located below the rim  458  of the disposable cup  478  and below the annular cavity  464 . This protects the integrity of the rim  458 , to avoid crushing or deforming that may otherwise tear or otherwise breach the rim  458  which is particularly structurally important to the disposable cup  478 . Instead, the disposable cup  478  is annularly pinched below the rim  458  by and between the inner ring  460  and the sidewall  468 . 
     Part of the vacuum chamber  436  is located directly radially between the inner ring  460  and the outer ring  461 . The annular cavity  464  is directly above the vacuum chamber  436 . 
     In this embodiment, the cap  411  includes an annular seal ring  479 . The annular seal ring  479  may be mounted on the outer ring  461 . The annular seal ring  479  is located below the ceiling  463 . The annular seal ring  479  is located directly radially between the inner ring  460  and the outer ring  461 . The annular seal ring  479  can be partially located within an annular recess of the cap  411  to anchor the annular seal ring  479  to the cap  411  while partially exposing the annular seal ring  479 . The exposed part of the annular seal ring  479  can engage the container body  402  to form an annular seal to prevent beverage leaking past the annular seal ring  479 . The annular seal ring  479  may form a secondary, backup seal to prevent beverage that may have already passed the annular seal between the interfacing surfaces of the inner ring  460  and the disposable cup  478  from escaping through the gap between the cap  411  and the container body  402 . The annular seal ring  479  may engage the sidewall  468 . The annular seal ring  479  may engage the lip  406 . The annular seal ring  479  may be formed from a flexible, elastic material, such as a polymer (e.g., PTFE, silicone, rubber). The annular seal ring  479  may be formed from a different material as the rest of the cap body  487  (e.g., the outer ring  461 , the ceiling  463 , and/or the upper lip  462 ). 
     The tubular sidewall of the disposable cup  478  is sloped (e.g. linear slope) such that the top of the disposable cup  478  is wider than the bottom of the disposable cup  478 , both within the hold  407  and on the exterior surface  408 . The slope can be linear and/or continuous. The surface of the sidewall  468  that forms the hold  407  is sloped, such that the hold  407  is narrower at the inner bottom wall  423  and wider at the lip  406 . The slope can be linear and/or continuous. In this way, the tubular sidewall of the disposable cup  478  is sloped in the same direction as the sidewall  468  of the container body  402  (e.g., narrowing downward). Such similar sloped profile in the walls may allow greater engagement between the radial exterior surface of the tubular sidewall of the disposable cup  478  and the radially interior surface of the sidewall  468  (defining the hold  407 ) to support the disposable cup  478  within the hold  407 . 
     The top of the disposable cup  478  extends above the lip  406  of the container body  402  when the disposable cup  478  sits in the hold  407 . The disposable cup  478  is taller than the hold  407 . This may be the case when the bottom of the disposable cup  478  rests of the floor (e.g., inner bottom wall  423 ) of the hold  407 . The top of the disposable cup  478  extend up beyond the lip  406  and allows the disposable cup  478  to be placed in the hold  407  while containing a beverage (e.g., by the user gripping the rim  458 ), instead of simply dropping the disposable cup  478  with beverage inside into a hold  407  that is deeper than the disposable cup  478  itself, which risks damaging the disposable cup  478  and spilling or leakage of the beverage. Also, the top of the disposable cup  478  extending above and beyond the lip  406  allows the disposable cup  478 , particularly the rim  458 , to be gripped by hand for easy lifting of the disposable cup  478  and removal of the disposable cup  478  from the hold  407  without having to dig the rim  458  out from within the hold  407 . However, depending on the height of the disposable cup  478 , the disposable cup  478  may not extend above the lip  406  while the disposable cup  478  is within the hold  407 . Still, the annular seal may be generated to seal with the annular inner surface of the disposable cup  478  to seal the beverage between the disposable cup  478  and the cap  411 . 
     In operation, the disposable cup  478  filled with beverage is placed within the hold  407  and then the cap  411  is mounted on the container body  402 . Then beverage is consumed through the outlet aperture  567 . After partial or complete consumption, the cap  411  is dismounted from the container body  402  by disengaging fastening  413  and moving the cap  411  axially relative to the container body  402 . In some cases, the disposable cup  478  will remain in the hold  407  while the cap  411  is lifted away, terminating the annular seal with the inner annular surface  494  of the disposable cup  478  and the inner ring  460 . The disposable cup  478  remaining in the hold  407  may depend on the volume of beverage reaming in the disposable cup  478 , which weighs the disposable cup  478  down, and any suction force generated within the hold  407  below the disposable cup  478  that resists removal of the disposable cup  478  from the hold  407 . In other cases, the interference between the inner ring  460  and the inner annular surface of the disposable cup  478  is sufficient to overcome either of these forces such that the disposable cup  478  remains attached to the cap  411 , the inner ring  460  specifically, and the disposable cup  478  lifts out of the hold  407  when the cap  411  is moved axially away relative to the container body  402 . In such a case, the disposable cup  478  can be pulled axially downward relative to the cap  411  to overcome the stiction force between the inner ring  460  and the inner annular surface  494  of the disposable cup  478  to separate the disposable cup  478  from the cap  411 . 
     While the use of a disposable cup  478  within the beverage container  401  has been demonstrated, the beverage container  401  can be used to contain, insulate, and facilitate consumption of a beverage within the hold  407  without a disposable cup  478 . In such a case, beverage container  401  has dual utility in being useable with a disposable cup  478  and without one as well. Without a disposable cup  478 , the beverage can be poured directly into the hold  407 . The beverage can directly contact the sidewall  468  (e.g., the inner tubular sidewall  416 ) and the floor  469  (e.g., the inner bottom wall  423 ). The cap  411  can be secured onto the top of the container body  402  as previously described, with the inner ring  460  engaging with an inner annular surface of the sidewall  468 , below the lip  406  to generate an annular seal between the inner ring  460  and the upper part of the sidewall  468 . The annular seal may be generated between a radially outward annular surface of the inner ring  460  (e.g., the annular projecting seal  484 ) and the upper part of the sidewall  468  within the hold  407 . The annular seal may prevent the beverage from escaping the hold  407  except through the outlet aperture  459 . 
       FIG. 19  is a cross sectional view similar to that of  FIG. 18  but shows the use of a stand  466  to support use of different sized disposable cup  578 . The container body  402  is the same as in  FIG. 18 . However, a different cap (cap  511 ) is used to demonstrate various cap features that can additionally/alternatively be used. The cap  511  can be the same as the cap  411 , and the above referenced aspects regarding cap  411  apply equally to cap  411 , including but not limited to when similar base reference numbers are used (e.g.,  487 ,  587 ), except where shown or described to be incompatible. Common aspects may not be repeated between embodiments, but are applicable. The disposable cups  578  can be identical to that of disposable cup  478  except being of a different size by having a different height. 
       FIG. 19  demonstrates a variation in the construction of the cap  511 . Similar to the previous cap, the cap  511  includes outer ring  461  and a ceiling  563  that spans within, and to, the outer ring  561 . Fastening  513  is formed on the inside of the outer ring  561  that is complementary with fastening  413  on the container body  402 . An upper lip  562  is formed. An annular projecting seal  584  is located on the outer ring  561 . An outlet aperture  559  is formed through the ceiling  559 , and a closure  567  can selectively seal the outlet aperture  559 . 
     In this version, the inner ring  560  is part of the cap body  587 . In this way, the inner ring  560  is formed from the same type of material as, and is contiguous with, the ceiling  563  and the outer ring  561 . An annular cavity  564  is formed between the inner ring  560  and the outer ring  561 . A bend  582  is formed in the inner ring  560 . 
     The inner ring  560  includes a band  592 . The band  592  is formed from a flexible material (e.g., rubber, silicone) that is softer than the material that forms the cap body  587 . The band  592  can be annular about the axis. The band  592  can be elastic to retain itself on the inner ring  560 . The band  592  can be mounted on a radially outward facing annular recess on the inner ring  560 . The band  592  can form annular projecting seals  584 . The band  592  can be the part of the inner ring  560  that engages the inner annular surface  594  of the disposable cup  478  for sealing. 
     Disposable cups  478 ,  578  often come in multiple sizes (e.g., small, medium, and large), the size typically depending on the height of the disposable cups  478 ,  578  to contain different beverage volumes. However, the diameter of the rim  458 ,  558  of the disposable cups  478 ,  578  is often the same amongst the different sizes so that a single size of disposable lid will fit on the rim  458 ,  558  of all sizes of disposable cups  478 ,  578 , thereby simplifying the cup/lid supply chain and in-store assembly procedure. Due to this top-end sizing similarity, multiple different sizes of disposable cups  478 ,  578  can be held within the beverage container  401 , with the rim  458 ,  558  being positioned above the lip  407 , within the annular cavity  464 , to seal with the inner ring  460  as previously described. In such cases, a stand  466  is placed within the hold  407  to account for height differences amongst the different sizes of the disposable cups  478 ,  578 . 
       FIG. 19  shows how different size of a disposable cup  578  can be accommodated, such as small, medium, and large. A stand  466  can be absent ( FIG. 18 , for a large size) or present in the hold ( FIG. 19  for a small size). Further, the stand  466  can be flipped relative to the orientation shown in  FIG. 19  to change the amount of height boost that the stand  466  provides, which such case would support a medium size beverage cup. 
     The stand  466  includes a first axial end  490  and a second axial end  491  opposite the first axial end  490 . In this example, the first axial end  490  is facing upwards within the hold  407  and engages the disposable cup  578  while the second axial end  491  is facing downwards within the hold  407  and engages the floor  469 . The stand  466  can be flipped so that the first axial end  490  is facing downwards within the hold  407  and engages the floor  469  while the second axial end  491  faces upwards within the hold  407  and engages the disposable cup  578 . 
     The stand  466  includes a base  485  and a floor  486 . The base  485  is cylindrical in this embodiment, but may not be cylindrical in various other embodiments. The base  485  can be tubular. The floor  486  is radially within the base  485 . The floor  486  spans the tubular sidewall that forms the base  485 . The floor  486  provides a support on which the bottom end of the disposable cup  578  can engage and be supported. The floor  486  is not equidistant between the first axial end  490  and a second axial end  491 , such that the floor  486  is at different heights depending on the orientation of the stand  466  (e.g., first axial end  490  up or second axial end  481  up), which allows the stand  466  to support disposable cups of different heights. The base  485  and the floor  486  define a first cavity  492  which is open on the first axial end  490 . The first cavity  492  defines an annular step so that an inward facing surface of the sidewall of the base  485  can engage the side of the disposable cup  578  and support the disposable cup  578  laterally (e.g., when the beverage container  401  is tipped to its side during drinking of the beverage). The base  485  and the floor  486  define a second cavity  493  which is open on the second axial end  491 . The second cavity  493  defines an annular step so that the sidewall of the base  485  can engage the side of the disposable cup  578  and support the disposable cup  578  laterally. 
     As shown, the rim  558  of the different sized disposable cup  578  (relative to  FIG. 18 ) can still be located above the lip  407  or otherwise having the relationships previously described due to the use of the stand  466 . The stand  466  can be symmetric around the axis AA, such that what is shown in  FIG. 19  represents the entire round stand  466  about the axis AA. 
     Inventive aspects of the present disclosure can be realized in various other beverage containers, such as bottles and jugs (e.g., having narrower top ends). Any of the embodiments referenced herein can include a handle extending laterally from the side of the container body, such as a “U” or loop which can be gripped by hand. The exteriors of containers and/or the interiors of holds can be frustoconical, bring wider upwards and narrower downwards. 
     Various beverage container embodiments do not contain electronics, such as no battery, electrical circuits, and further no heating elements (e.g., via electrical, chemical, combustion). However, such features could be incorporated. 
     Comparisons made herein that one or more components can have greater heat capacity than one or more other components are comparing total heat capacity of the referenced material, and not a comparison of relative heat capacity by weight or volume. Comparisons of radial thicknesses of two different parts, such as radial thicknesses of an inner tubular sidewall and an outer tubular sidewall, can compare thicknesses at equal heights along the axis, at radially overlapping portions. Comparisons of axial thicknesses of two different parts, such as axial thicknesses of an inner bottom wall and an outer bottom wall, can compare thicknesses at common radial locations (parallel with the axis). Comparisons of radial thicknesses may only compare radially overlapping portions of the referenced parts. Diameters are measured along the radial direction, orthogonal to the axis AA. 
     It is noted that the materials referenced herein may be coated, such as with paint, polymer (e.g., rubber), ceramic, or other coating. Therefore, while a wall (including a layer, sleeve, floor, etc.) may be metal, the entirety of the wall may not be metal. A wall may include non-metal parts, such as polymer, rubber, or foam. For example, an outer tubular sidewall may include layers or other parts that are not metal, such as one or more coatings (e.g., exterior paint and/or interior radiation reflective coating), or a ceramic coating on an inner tubular sidewall and inner bottom wall. Each of the walls, and layers that compose the walls, as well as other parts, can be a respective single piece of metal that is extruded as a tube and then rolled to form the particular profile shown and/or stamped and reformed (e.g., with hydroforming to blow out shapes). Possible types of metal for the referenced parts herein include stainless steel, aluminum, and/or brass, amongst other options. Any wall (including a layer, sleeve, floor, etc.) or other component referenced herein can be formed from metal. These pieces of metal can have layers applied, such as paint, polymer, sealant, adhesive, and reflective substrate, amongst other options, to form a wall that is composite. The metal can be extruded as a tube and then rolled to form the particular profile shown and/or hydro-formed, amongst other options. 
     The term cylindrical as used herein does not mean that a corresponding surface or component that is cylindrical has a constant diameter. Rather, the diameter can change along its length, unless specified to have a constant diameter. Cylindrical does not necessarily mean that the outer surface is perfectly circular, as ovular or faceted (e.g., octagonal profiles) can also be cylindrical, unless otherwise noted. Likewise, the term tubular does not necessarily mean that a corresponding surface or component that is tubular has a constant diameter, rather the diameter can change along its length, unless specified to have a constant diameter. 
     The beverages referenced herein may be consumed via a straw that extends through the tumbler opening and, if included, the outlet aperture of a cap. 
     A statement that the vacuum chamber is atmospherically sealed by each of the inner tubular sidewall, the outer tubular sidewall, inner bottom wall, and/or the outer bottom wall does not necessarily mean that the vacuum chamber is sealed by only these structures, unless it is stated that only these structures form the walls that seals the vacuum chamber. Intermediary structures may also help seal. A vacuum space may be entirely devoid of material, including gas. 
     Various joints are referenced herein, joining two pieces. Any such joints can be annular about the axis AA. Any joint may seal. Any joint can be formed by welding, swaging, brazing, adhesive, press fitting, or other manner of attachment of two pieces. Likewise, any two pieces shown or described as connected can be joined by these techniques. 
     Two components that are described as connected are not necessarily in contact with each other without an intermediary component, unless it is specified that they are directly connected, in which case the two components are in contact with each other. Although not necessarily stated, any two materials that are contacting in any of the FIGS. can be described (e.g., specifically claimed) as directly connected, and any two components described herein as being connected can be described (e.g., specifically claimed), optionally, as directly connected. 
     Optional language is used herein describing what “can” or “may” be present, or what “various” embodiment may include, not what is or must necessarily be present. Therefore, if in reference to an embodiment, it is stated that an aspect “may” or “can” be present, then the option can be included, or left out, of the embodiment, particularly in a claim. Each sentence or paragraph can refer to multiple, independent aspects. A claim can be amended with a select word or phrase from a sentence or paragraph without taking the whole sentence or paragraph. The walls shown in the embodiments may be the only walls of the particular containers. For example, the outer tubular wall may be the outermost wall of the container body. No wall may be present directly radially between the inner tubular sidewall and the outer tubular sidewall. No wall may be present axially between the inner bottom wall and the outer bottom wall. No wall may be present axially between the axis and the inner tubular sidewall (e.g., defining hold). 
     The present disclosure is made using several embodiments to highlight various inventive aspects. Modifications can be made to the embodiments presented herein without departing from the scope of the invention. It is intended that someone can mix various aspects from the presented embodiments and remain within the scope of this disclosure. For example, this disclosure contemplates that a single element disclosed in part of a sentence of a paragraph can be implemented in a different embodiment (or claimed) apart from the other aspects of the rest of the sentence and paragraph. Likewise, an aspect of part of an embodiment shown in a FIG. can be implemented in a different embodiment (or claimed) apart from the rest of the embodiment shown in the FIG. The scope of the disclosure is not limited to the specific embodiments shown herein. Rather, this disclosure is presented in an illustrative manner to demonstrate several of many possibilities within the scope of this disclosure. The scope of the invention is not limited to the particular embodiments disclosed herein.