Patent Publication Number: US-2022234811-A1

Title: Container system including lid with improved neck insulation

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     Not applicable. 
     STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
     Not applicable. 
     NAMES OF PARTIES TO A JOINT RESEARCH AGREEMENT 
     Not applicable. 
     REFERENCE TO AN APPENDIX SUBMITTED ON COMPACT DISC 
     Not applicable. 
     FIELD OF THE INVENTION 
     The present invention generally relates to a container system including a lid with an improved neck insulation. The container of the invention is Tillable or filled with a human drink such as water, coffee, beverages, sodas, and juices. 
     BACKGROUND OF THE INVENTION 
     Conventional containers/bottles include a body or vessel for holding a fluid and a lid to prevent the fluid from spilling. Containers may hold a variety of different types of liquids and fluids. For instance, known containers may hold water, beverages, liquid refreshments, sodas, juices, thirst-quenchers, and the like. They may also hold fluids that require mixing, e g powdered drinks, electrolyte pills, energy drinks, baby formulas, pancake batters, crepe mixes, baking materials, dietary supplements, salsa, sauces, oil and vinegar, salad dressings, smoothies, and the like. Containers may be used in a wide variety of environments such as at home, office, gym, or health club; while traveling; or during activities such as exercising, gardening, playing games or sports, hiking, climbing, working, commuting, driving a car, or riding in an automobile, bus, train, or airplane. 
     Insulated bottles can maintain the temperature of the drink. For example, if a user wants his/her water to stay cold, the user can just drop a few ice cubes in the bottle, and the water will maintain a refreshingly crisp temperature for hours, even if the user leaves it in a hot car. In cold winter days, when all the user really needs is a warm drink, insulated bottles can save the day too. 
     However, bottle neck is a part through which heat can, relatively speaking, easily transfer from inside to the outside, or from outside to the inside. A simple and effective insulation of the bottle neck remains a challenge in the industry Current container designs have a too complicated structure or provide insufficient insulation for the bottle neck. For example, United States Patent Application 2007/0131638 by Thadani discloses an insulated bottle as shown in  FIG. 1 . The device  5  has two major components, the receptacle that will store the closed bottle, and the closure capped bottle, which will contain the liquids. The bottle  6  with self-secured closure cap  7  forms the closure capped bottle and assembling the body  8  with its adapted upper cup  9  forms the receptacle. The upright, circular, externally threaded, thickest, open neck end of bottle  6  takes circular, internally threaded closure cap  7 . Closure capped bottle  6  (+ 7 ) must be seated in body  8 , and then upper cup  9  must be mated with body  8  to form the insulatory receptacle. The formed bottle  6  has a first upright, circular, narrow, externally threaded, thickest, open end neck portion  10 , a neck downwards depending, gradually widening shoulder portion, a shoulder end depending, downwards, ribbed body portion  11 , with a body end closed base portion  12 .  13  shows the horizontal outward ribs on the bottle&#39;s upright body portion.  14  shows the maximum external width of the bottle. For secure closing, the open neck end  10  has external threads to take the adapted, circular, internally threaded, non-permanently fixed, removable and reusable closure cap  7 . Closure cap  7  has a top flat circular portion with a depending downwards skirt internally threaded. Closure cap  7  is commonly known as a “single piece” cap.  15  shows the top flat of the closure cap  7 . This is the place that will be held down by the body secured upper cup&#39;s inner base to hold fast the stored bottle within the formed receptacle. The receptacle body  8  will seat and hold the body of bottle  6 . The body  8  will accept, seat, and enclose within itself, the bottle&#39;s base  12  and upright body portion  11 , leaving the bottle&#39;s shoulder and neck outside itself.  16  shows the first open end of the body.  18  shows the inner base of the body on which the base  12  of the stored bottle will rest.  19  shows the least internal width of the body, this being as across opposite ribs opposite sides. Not shown in  FIG. 1  is the outer grooves on body that, provide an improved grip while opening or closing the receptacle  FIG. 1  shows that the maximum external width  14  of bottle  6  is less than the least internal width  19  of body  8 . When bottle  6  is seated in body  8 , with bottle base  12  resting on body base inner  18 , the upright body portion  11  and base  12  of bottle  6  will not be held back by inner form of body  8 . Thus, closure capped stored bottle  6  (+ 7 ) can be gripped by its narrow neck and removed from storing body through body&#39;s open end  16 .  FIG. 1  also shows the upper cup&#39;s base&#39;s inner flat side  22 .  23  shows the least internal width of the upper cup, which, is also more than the maximum external width  14  of the bottle  6 .  24  shows the outward, horizontal, flat ring part of the upper cup.  25  shows the flat ring end, downward depending, internally threaded skirt. 
     United States Patent Application 2017/0166385 by Pisarevsky discloses an insulating container for a beverage bottle that compromises a container lower body, a container upper body, and a swiveling carrying handle. The insulating container includes a hollow interior space sized to receive a longneck beverage bottle. The inner walls of the container lower body and the container upper body are lined with foam or other suitable material configured to provide protection and stability in the event of breakage and spillage especially when transporting the container. The inner liner of the container upper body includes an aperture sized to receive the top portion of the longneck beverage.  FIG. 2  illustrates a cross sectional view of an insulating container  500  for a beverage container. A container lower body  502  is sized to receive various types of beverage containers. The size and shape of the container lower body  502  is configured to removably receive the beverage container. The size and shape of the container upper body  504 , the foam insert  505 , and the aperture  506  are configured to removably receive a beverage container to provide protection from breakage and spillage, and an alternative closure. The container upper body  504  may include an integrated carrying handle  507  configured to swivel to an open, upright position to carry the container, and a closed position to store the container. The insulating container  500  may use a sealable coupling mechanism  508  such as a threaded mechanism (e.g male thread and female thread) to couple the container upper body  504  to the container lower body  502  to prevent spillage and to ensure an air-tight assembly. 
     United States Patent Application 2018/0020855 by Wang teaches a heat insulation bottle as shown in  FIGS. 3A, 3B and 3C . The heat insulation bottle comprises a bottle body  20 , a bottle head  30 , a flexible bushing  40 , a bottle cover  50  and a straw  60 . The bottle body  20  defines therein an accommodation chamber  21  and a concave arc portion in a bottom side of the accommodation chamber  21 . The bottle head  30  comprises a bottle mouth  33  located at a top side thereof with an opening  331  therein, a guide surface  34  located at an opposing bottom side thereof. The guide surface  34  slopes upwardly toward a bottom side of the opening  331  of the bottle mouth  33 . The bottom side of the bottle head  30  is detachably connected to a top side of the bottle body  20 , keeping the opening  331  of the bottle mouth  33  in communication with the accommodation chamber  21 . The bottle head  30  further comprises an air vent  35  in communication between the accommodation chamber  21  and the outside. The bottle head  30  consists of a base member  31  and a cap member  32 . The base member  31  comprises a connection segment  311  detachably connected to the bottle body  20 , an inner conical segment  312  connected to the connection segment  311  and defining therein the said guide surface  34 , and an inner tube segment  313  connected to the inner conical segment  312  opposite to the connection segment  311 . The cap member  32  comprises an outer tube segment  321  capped on the inner tube segment  313 , and an outer conical segment  322  attached onto the inner conical segment  312 . The inner tube segment  313  and the outer tube segment  321  are composed to create the bottle mouth  33 . The flexible bushing  40  is accommodated in the inner tube segment  313 . The outer tube segment  321  defines an upper wall  3211  at a top side thereof. The upper wall  3211  defines a hole therein at the center. The inner tube segment  313  defines a lower wall  3131  at a top side thereof. The lower wall  3131  defines a hole therein at the center. The diameter of the hole in the upper wall  3211  and the diameter of the hole in the lower wall  3131  are larger than the outer diameter of the flexible bushing  40 . The flexible bushing  40  is made of a flexible material and mounted in the opening  331  of the bottle mouth  33  with a top end thereof stopped by the upper wall  3211  and the lower wall  3131 , and therefore, the flexible bushing  40  is prohibited from falling out of the opening  331  of the bottle mouth  33 . After removal of the cap member  32  from the base member  31  through a rotary motion, the user can take the flexible bushing  40  out of the bottle mouth  33  for cleaning or replacement. The bottle cover  50  is fastened to the bottle head  30  to block the opening  331  of the bottle mouth  33 . The bottle cover  50  is a snap bottle cover design, having one end thereof pivotally connected to the bottle head  30  and an opposite end thereof terminating in a fastener  51  for fastening the bottle cover  50  to the bottle head  30 . The bottle cover  50  defines in an inner top side thereof an annular flange  52  that is detachably attached onto the bottle mouth  33 . The straw  60  has a beveled edge  61  at one end thereof, defining therein a side opening. The length of the straw  60  is longer than the distance between the concave arc portion  22  of the bottle body  20  and an opposing bottom end of the flexible bushing  40 , but shorter than the distance between the concave arc portion  22  of the bottle body  20  and the top end of the flexible bushing  40 , thus, the straw  60  has its one end stopped at the lowest area of the concave arc portion  22  and its other end inserted into the flexible bushing  40 . 
     United States Patent Application 20130277327 by FONG discloses a heat-insulation safety nursing bottle as shown in  FIG. 4 . The nursing bottle comprises a nursing bottle body  2 , a nipple  23  fastened to the nursing bottle body  2 , and a heat shield  1  surrounding the nursing bottle body  2 . The heat shield  1  comprises a cylindrical heat shield body  11 , which comprises an outer thread  111  extending around the periphery near the topmost edge thereof, and a heat shield cap  12 , which comprises a first inner thread  121  disposed near a bottom side thereof and threaded onto the outer thread  111  of the cylindrical heat shield body  11 , a center mounting through hole  122 , and a second inner thread  123  spaced above the first inner thread  121  and disposed adjacent to the center mounting through hole  122 . The nursing bottle body  2  comprises a bottleneck  21 , and an outer thread  22  extending around the periphery of the bottleneck  21 . The second inner thread  123  of the heat shield cap  12  is threaded onto the outer thread  22  of the nursing bottle body  2  to lock the nipple  23  to the bottleneck  21  of the nursing bottle body  2 . When the nursing bottle is assembled, the heat shield cap  12  of the heat shield  1  is secured to the bottleneck  21  of the nursing bottle body  2 , and the cylindrical heat shield body  11  of the heat shield  1  is spaced around the nursing bottle body  2 , avoiding direct transfer of heat from the milk in the nursing bottle body  2  to the cylindrical heat shield body  11  of the heat shield  1 , and therefore the cylindrical heat shield body  11  does not scald the user&#39;s hand. Further, the cylindrical heat shield body  11  of the heat shield  1  protects the nursing bottle body  2  against breaking. Even if the nursing bottle body  2  is broken, the broken chips can be kept inside the cylindrical heat shield body  11  of the heat shield  1 , prohibiting the baby from touching or eating the broken chips. 
     U.S. Pat. No. 4,303,180 to Sheu discloses a vacuum insulated, heat retaining, liquid dispensing bottle as shown in  FIG. 5 . The bottle includes an outer bottle body  10 , a bottle cover  12 , an internal bottle  14  installed within the outer bottle body  10  and spaced therefrom to preclude heat loss, a siphon pipe  16  extending deeply into the internal bottle  14 , a discharge pipe  20  with an upper end connected to the siphon pipe and a lower end extending out of the outer bottle body  10  having a discharge valve  18  which looks like a faucet, and a bottle stopper  22  with a compressed air mechanism. The discharge pipe  20  is disposed substantially entirely inside the bottle body  10  or equipped between the bottle body  10  and internal bottle  14 . The upper end of the discharge pipe  20  has been engraved with screw threads and is extended to over the opening  48  of bottle body  10 , and the other end, the lower end, is anchored between the bottle body  10  and the internal bottle  14  by means of a fixture  24  and further extends out of the bottle body  10  in which has a discharge switch  18  like a faucet. The bottom end of the siphon pipe  16  extends deeply into the inner side of the internal bottle  14 , with an upper end of the siphon pipe  16 , having been engraved with screw threads and a further projecting part, so that said projecting part may combine and engage with an upper end of said discharge pipe  20  by means of a threaded connector  44  having screw threads in its inner wall. In such an arrangement siphon pipe  16  and the discharge pipe  10 , will become a communicating pipe. The bottle stopper  22  is designed to be a centrally spaced ring housing, having an opening on top side and air holes  40  on bottom side, in which the ring housing is disposed within its inner side with a ring-shaped member  34  which closely engages with the housing and also extends upward as a pressing portion  36 . Also, a coil compressed spring  38  is set on the bottom side of the ring-shaped member  34  which is within the housing. After liquid is poured into the internal bottle  14  for storage without heat loss, the liquid within the internal bottle  14  will be easily absorbed into the discharge pipe  20  through the siphon pipe  16  because the calibers of both the siphon pipe  16  and the discharge pipe  20  are all small. Also, the opening  42  on the upper side of the internal bottle  14  is corked by a bottle stopper  22 . Therefore, when liquid within the internal bottle  14  is less than a level which is the least degree of liquid able to be absorbed into the discharge pipe  20  through the siphon pipe  16 , if necessary, the pressing portion  36  provided on the bottle stopper  22  may be pressed so as to force air within the housing  32  into the internal bottle  14  through the air hole adding pressure on the surface of liquid to have liquid absorbed into the discharge pipe  20  through the siphon pipe  16 . However, due to the lower end of the discharge pipe  20  being in normally closed condition, the above-described operation will fill the siphon pipe  16  and the discharge pipe  20 . Therefore, when it is desirous to dispense water after the bottle is covered by the bottle cover  12 , is only necessary to open the discharge valve  18  which is on the outside of the bottle without opening the bottle cover  12  or any other handed operations so water will readily and quickly flow out without tipping the bottle from an erect position. And when the discharge switch valve is switched off, water will also immediately stop flowing out. At this time, water still fills the siphon pipe  16  and the discharge pipe  20 , thus water will be also immediately flowing out after opening or switching on the valve  18  even though the discharge valve  18  has been switched on and off for many times in continuity. 
     Advantageously, the present invention provides a container system comprising a lid and a container. The container includes a neck, and the lid includes a neck-surrounding space defined by two walls of the lid. At least the neck-surrounding space is vacuum insulated, or it is filled with foam, air, or any combination thereof. The lid exhibits numerous technical merits such as improved neck insulation, better efficiency in heat insulation, simplicity in usage, and easy manufacturability, among others. 
     SUMMARY OF THE INVENTION 
     One aspect of the present invention provides a container system comprising a lid and a container. The lid is sized and configured to be attached to the container, which is finable or filled with a human drink such as water, coffee, beverages, sodas, and juices. The container comprises a mouth having an opening defined by a cylindrical neck wall for dispensing the human drink. The lid comprises an upper cover, a lower cover, and a peripheral wall (which is preferably closed) located between the upper cover and the lower cover and configured to connect the two covers. The lower cover comprises a circular trench (upside-down) surrounding a round island (upside-down). The cylindrical wall of the mouth is configured to insert into (and preferably fasten to) the circular trench, while the island is configured to plug into the opening (and preferably seal the opening). The circular trench is within the peripheral wall, and a space is formed between the peripheral wall and an outer vertical wall of the circular trench. At least the space is vacuum insulated, or it is filled with foam, air, or any combination thereof. 
     The above features and advantages and other features and advantages of the present invention are readily apparent from the following detailed description of the best modes for carrying out the invention when taken in connection with the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
       The present invention is illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar elements. All the figures are schematic and generally only show parts which are necessary in order to elucidate the invention. For simplicity and clarity of illustration, elements shown in the figures and discussed below have not necessarily been drawn to scale. Well-known structures and devices are shown in simplified form, omitted, or merely suggested, in order to avoid unnecessarily obscuring the present invention. 
         FIG. 1  shows an insulated bottle in the prior art. 
         FIG. 2  shows an insulating container for a beverage bottle in the prior art. 
         FIG. 3A  is an oblique top elevational view of a heat insulation bottle in the prior art. 
         FIG. 3B  is an exploded vim of the heat insulation bottle in  FIG. 3A . 
         FIG. 3C  is a sectional view of an upper part of the heat insulation bottle in  FIG. 3A . 
         FIG. 4  is a sectional side view of a heat-insulation safety nursing bottle in the prior art. 
         FIG. 5  is a longitudinally sectional view of a vacuum insulated bottle in the prior art. 
         FIG. 6  illustrates a container system including a lid and a container in accordance with an exemplary embodiment of the present invention. 
         FIG. 7  illustrates a basic lid design in accordance with an exemplary embodiment of the present invention. 
         FIG. 8  illustrates a basic container body design in accordance with an exemplary embodiment of the present invention. 
         FIG. 9  illustrates a lid design including one or more reinforcement partition members in accordance with an exemplary embodiment of the present invention. 
         FIG. 10  is a sectional view schematically illustrating a lid design including reinforcement partition members of different shapes in accordance with an exemplary embodiment of the present invention. 
         FIG. 11  is a sectional view schematically illustrating a lid design including flat reinforcement partition members with different extension directions in accordance with an exemplary embodiment of the present invention. 
         FIG. 12  is a sectional view schematically illustrating a lid design including flat reinforcement partition members forming a grid in accordance with an exemplary embodiment of the present invention. 
         FIG. 13  is a sectional view schematically illustrating a lid design including flat reinforcement partition members forming another grid in accordance with an exemplary embodiment of the present invention. 
         FIG. 14  is a top isometric/perspective view of a container system in accordance with an exemplary embodiment of the present invention. 
         FIG. 15  is a bottom isometric/perspective view of the lid of the container system as shown in  FIG. 14 . 
         FIG. 16  shows a cutting plane line C-C of the container system as shown in  FIG. 14 . 
         FIG. 17  is a cross-sectional view of the container system as shown in  FIG. 14 . 
         FIG. 18  is a top front isometric/perspective view of the first modification based on the container system as shown in  FIG. 14 . 
         FIG. 19  shows a cutting plane line D-D of the container system as shown in  FIG. 18 . 
         FIG. 20  is a cross-sectional view of the container system as shown in  FIG. 18 . 
         FIG. 21  is an exploded isometric view of the lid in the container system as shown in  FIG. 18 . 
         FIG. 22  is a top isometric/perspective view of the second modification based on the container system as shown in  FIG. 14 . 
         FIG. 23  is a cross-sectional view of the container system as shown in  FIG. 22 . 
         FIG. 24  is an exploded isometric view of a lid in the container system as shown in  FIG. 23 . 
         FIG. 25  is a cross-sectional view of another lid in the container system as shown in  FIG. 22 . 
         FIG. 26  is a top front isometric/perspective view of the third modification based on the container system as shown in  FIG. 14 . 
         FIG. 27  is an exploded isometric view of the container system as shown in  FIG. 26 . 
         FIG. 28  is an exploded isometric view of the lid in the container system as shown in  FIG. 26 . 
         FIG. 29  shows two cutting plane lines A-A and B-B on top view of the container system as shown in  FIG. 26 . 
         FIG. 30  is a cross-sectional view of the container system as shown in  FIG. 26  along the cutting plane line A-A. 
         FIG. 31  is a cross-sectional view of the container system as shown in  FIG. 26  along the cutting plane line B-B. 
         FIG. 32  is a bottom isometric/perspective view of the lid in the container system as shown in  FIG. 26 , after its lower cover is removed. 
         FIG. 33  is a top front isometric/perspective view of the fourth modification based on the container system as shown in  FIG. 14 . 
         FIG. 34  shows a cutting plane line D-D on top view of the container system as shown in  FIG. 33 . 
         FIG. 35  is a cross-sectional view of the container system as shown in  FIG. 33  along the cutting plane line D-D. 
         FIG. 36  is a cross-sectional view of the fifth modification based on the container system as shown in  FIG. 14 . 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It is apparent, however, to one skilled in the art that the present invention may be practiced without these specific details or with an equivalent arrangement. 
     Where a numerical range is disclosed herein, unless otherwise specified, such range is continuous, inclusive of both the minimum and maximum values of the range as well as every value between such minimum and maximum values. Still further, where a range refers to integers, only the integers from the minimum value to and including the maximum value of such range are included. In addition, where multiple ranges are provided to describe a feature or characteristic, such ranges can be combined. 
     It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the invention. For example, when an element is referred to as being “on”, “connected to”, or “coupled to” another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being “directly on”, “directly connected to”, or “directly coupled to” another element, there are no intervening elements present. 
     Throughout the specification and claims, the following terms take the meanings explicitly associated herein, unless the context clearly dictates otherwise. The phrase “in one embodiment” does not necessarily refer to the same embodiment, although it may. Furthermore, the phrase “in another embodiment” does not necessarily refer to a different embodiment, although it may. Thus, as described below, various embodiments of the invention may be readily combined without departing from the scope or spirit of the invention. 
     In addition, as used herein, the term “or” is an inclusive “or” operator, and is equivalent to the term “and/or,” unless the context clearly dictates otherwise. The term “based on” is not exclusive and allows for being based on additional factors not described, unless the context clearly dictates otherwise. In addition, throughout the specification, the meaning of “a,” “an,” and “the” include plural references. The meaning of “in” includes “in” and “on.” 
     With reference to  FIG. 6 , a container system  80  includes a lid  81  and a container  82 . The lid  81  is sized and configured to be attached to the container  82 , which is Tillable or filled with a human drink such as water, coffee, beverages, sodas, and juices. The container  82  may be of any suitable material, including metal, plastic, glass, rubber, or any combinations thereof, and may be insulated or un-insulated. In one embodiment, the container  82  is formed from a plastic or other polymer material, which produces a flexible and/or squeezable container/bottle. In another embodiment, the container  82  may be formed of an insulated stainless steel, and which is fastened with a plastic or rubber base on the bottom (not shown) that provides protection for the bottom of the container as well as providing a relatively wide surface on which the container such as a beverage bottle is rested when standing. The base may be constructed of a plastic material, such as polypropylene, although other materials are also contemplated. In yet another embodiment, the container  82  may be of a double-walled construction, between which is an evacuated space, forming a so-called vacuum bottle/container. The container  82  may be flexible or rigid. A flexible container  82  permits the user to squeeze the container to force the content (e.g. liquid) from the container, while a rigid container  30  requires the user to draw the liquid out of the container  82  through suction or by pouring the liquid from the container  30 . The container  30  may have a smooth or contoured surface that may be provided with patterns, such as by printing, painting, or embossing. 
     Referring to  FIG. 6  again, container  82  includes a mouth  83  having an opening  84  defined by a cylindrical neck wall  85  for dispensing the human drink. Examples of lids/closures  81  include internally threaded bottle caps, externally threaded screw caps or tops, stoppers, toggle or swing-type closures, crown caps, flip-tops, and friction or interference fit lids. Typically, a lid is removably attached to the neck of a container so a user can remove the lid to add liquid, powders, ice, or other products into the container. The lid is then screwed or snapped onto the neck of the container to provide a generally watertight and leak-proof seal. When a user desires to drink liquid from the container, the lid may be removed by unscrewing the lid to provide access into the reservoir of the container. The user drinks from an opening formed by the neck of the container and then replaces the lid onto the container to re-seal the container. Lid  81  comprises an upper cover  86 , a lower cover  87 , and a peripheral wall  88  (which is preferably closed) located between the upper cover  86  and the lower cover  87  and configured to connect the two covers ( 86 ,  87 ). The lower cover  87  comprises a circular trench  89  (upside-down) surrounding a round island  90  (upside-down). The cylindrical wall  85  of the mouth  83  is configured to insert into (and preferably fasten to) the circular trench  89 , while the island  90  is configured to plug into the opening  84 , and preferably seal the opening  84 . The circular trench  89  is within the peripheral wall  88 , and hence, a space  96  is formed between the peripheral wall  88  and an outer vertical wall  892  of the circular trench  89 . A part of or the entire space  96  is vacuum insulated, or filled with foam, air, or any combination thereof. In some embodiments, the entire space enclosed by the upper cover  86 , lower cover  87 , and the peripheral wall  88  is vacuum insulated, or it is filled with air, foam, or any combination thereof. 
     In various embodiments, the lower cover  87  is preferably continuous and it has no hole, but it may have one or more holes. As shown in  FIG. 7 , the lower cover  87  may include, from the outermost to the innermost, a trench outward bank  891 , a trench outer vertical wall  892 , a trench base  893 , a trench inner vertical wall  894 , and a trench inward bank  895 , and a central region  901  of the round island  90 . It should be appreciated that the trench inward bank  895  is also the circumference region of the round island  90 . The diameter of the central region  901  of the round island  90  may be less than 90%, 80% or 70% of the diameter of the round island  90 . The trench outward bank  891  has a shape that conforms to a shoulder  97  of the container  82 . In one embodiment, the lid  81  and the container  82  are coaxial and have substantially the same diameter. At least, they have substantially the same diameter at the junction where the trench outward bank  891  and the shoulder  97  meet and contact intimately. In other words, the maximal diameter of the trench outward bank  891  and the maximal diameter of the shoulder  97  may be substantially the same. In some embodiments, the trench outward bank  891  is flat, curved, angled, or just a point of intersection of the peripheral wall  88  and the outer vertical wall  892  of the circular trench  89 . Preferably, the shoulder  97  has a size same as, and has a surface or shape complementary to, the trench outward bank  891 , so that they can intimately contact each other. For example, both the shoulder  97  and the trench outward bank  891  may be flat and having a same downward slope. 
     In various embodiments, the maximal diameter of the outer vertical wall  892  is about 30-95%, 40-95%, 40-90%, 50-90%, 60-85%, 70-85%, 75-85%, or 75-80% of the maximal diameter of the peripheral wall  88 . As a result, the space  96  between the peripheral wall  88  and an outer vertical wall  892  of the circular trench  89  may have a width (or a radial length as measured along the direction radial from the center of the circular trench  89  or the round island  90 ). The width or the radial length of the space  96  may be about 5-40%, 5-30%, 10-30%, 10-20%, or 15-20% of the radius (or the maximal radius if wall  88  thickness is accounted) of the peripheral wall  88 . The trench outward bank  891  may be flat and have a length greater than 0, 0.01 mm, 0.05 mm, 0.1 mm, 0.2 mm, 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, 2.5 mm, 3.0 mm, 3.5 mm, 3.5 mm, or 4.0 mm, wherein the length is measured along a direction radial from the center of the circular trench  89  or the round island  90 . 
     The cylindrical wall  85  of the mouth  83  as shown in  FIG. 6  is fastened/secured to the circular trench  89  by any attaching or fastening structures, such as a threaded connection (e neck finish), a friction fit, interference fit, snap fit, fastener, clips, a bayonet attachment, or any combination thereof. In an embodiment as shown in  FIG. 8 , the cylindrical wall  85  of the mouth  83  has an internal wall  851  and an external wall  852 . The attaching or fastening structure comprises threads on the internal wall  851  and complimentary threads on the trench inner vertical wall  894  as shown in  FIG. 7 . For example, the attaching or fastening structure may include threads on the external wall  852  and complimentary threads on the trench outer vertical wall  892 . 
     With reference to  FIG. 9 , the container system  80  of the present invention may additionally include one or more reinforcement partition members  91  (such as walls  91 ) within the space enclosed by the upper cover  86 , lower cover  87 , and the peripheral wall  88 . When two or more reinforcement partition members  91  are present, any two of these partition members  91  are separated from each other or connected to each other Typically, the one or more reinforcement partition members  91  are substantially vertical; but it or they may not be substantially vertical, for example, substantially horizontal. These reinforcement partition members  91  may divide the space enclosed by the upper cover  86 , lower cover  87 , and the enclosed wall  88  into two or more chambers  99 . These chambers  99  may be completely separated from each other, or partially connected to each other. In preferred embodiments, these chambers  99  are vacuum insulated, or they are filled with air, foam, or any combination thereof. 
     With reference to  FIG. 10 , the one or more reinforcement partition members  91  may include a flat partition member  92 , a curved partition member  98 , a circular partition member  93 , or any combination thereof. For example,  FIG. 11  schematically shows that a flat partition member  92   a  may be extended along a chord direction of the circular trench  89  or the round island  90 , but not along a direction radial from the center of the circular trench  89  or the round island  90 . Another flat partition member  92   b  may be extended along a direction radial from the center of the circular trench  89  or the round island  90 . Still another flat partition member  92   c  may be extended along a diameter direction of the circular trench  89  or the round island  90   FIG. 12  is a top view showing that a circular partition member  93   a  is not concentrical with the circular trench  89  or the round island  90 , while another circular partition member  93   b  is concentrical with the circular trench  89  or the round island  90 . 
     As shown in  FIG. 12 , a plurality of flat partition members  92   a  are extended along chords&#39; direction (such as chords in parallel with each other and perpendicular to each other) of the circular trench  89  or the round island  90 , but are not along a direction radial from the center thereof. These partition members  92   a  may form a grid. Alternatively, as shown in  FIG. 13 , these partition members  92   a  together with one or two flat partition members  92   c  that are extended along a diameter direction of the circular trench  89  or the round island  90 , may form a grid of partition members  92 . 
       FIGS. 14-17  illustrate a basic example of container system  80 . As shown in  FIG. 14 , the upper cover  86  is substantially flat and round, and the peripheral wall  88  is substantially cylindrical. The lid  81  and the container  82  have substantially the same diameter. Referring to  FIG. 15 , the lower cover  87  may include, from the outermost to the innermost, a trench outward bank  891 , a trench outer vertical wall  892 , a trench base  893  (not shown), a trench inner vertical wall  894 , and a trench inward bank  895 , and a central region  901  of the round island  90 . It should be appreciated that the trench inward bank  895  is also the circumference region of the round island  90 . A cutting plane represented by the cutting plane line C-C as shown in  FIG. 16  provides a cross-sectional view of the container system as shown in  FIG. 17 , in which the trench base  893  is visible. The container system  80  in  FIG. 17  does not include any reinforcement partition members  91  (such as walls  91 ) within the space enclosed by the upper cover  86 , lower cover  87 , and the peripheral wall  88 . The container  82  may have a double-walled construction, between which is an evacuated space, forming a so-called vacuum bottle/container. 
       FIGS. 18-21  illustrate a first modification of the basic example of container system  80  as shown in  FIGS. 14-17 . As shown in  FIG. 18 , the upper cover  86  is substantially flat and round, but the peripheral wall  88  has varying diameters. A cutting plane represented by the cutting plane line C-C as shown in  FIG. 19  provides a cross-sectional view of the container system as shown in  FIG. 20 , in which one or more reinforcement partition members  91  (such as walls  91 ) are present within the space enclosed by the upper cover  86 , lower cover  87 , and the peripheral wall  88 . Referring to  FIG. 21 , a plurality of flat partition members  92   a  are extended along chords&#39; direction of the circular trench  89  or the round island  90 , but are not along a direction radial from the center thereof. For example, 4 out of 6 flat partition members  92   a  are extended along 4 parallel chords and the other 2 are extended along 2 parallel chords that are perpendicular to the 4 parallel chords, forming a 2×4 grid of partition members  92   a . Alternatively, these partition members  92   a  together with one or two flat partition members  92   c  (not shown) that are extended along a diameter direction of the circular trench  89  or the round island  90 , may form another grid of partition members  92 . The space  96  is formed between the peripheral wall  88  and the outer vertical wall  892  of the circular trench  89 . 
       FIGS. 22-25  illustrate a second modification of the basic example of container system  80  as shown in  FIGS. 14-17 . As shown in  FIG. 22 , the upper cover  86  is not substantially flat and round. Instead, the upper cover  86  has irregularity or irregularities such as hole(s), groove(s), basin(s), plateau(s), or any combination thereof. For example, a groove  86   g  is present on the upper cover  86 .  FIG. 23  shows that the groove  86   g  may be designed to house a handle attached to the lid  81 . The body of the container  82  is constructed of an external wall, an internal wall, and insulation material filled between the two walls. There is also insulation material filled within the island  90  and chambers  99 . A circular partition member  93   b  vertically spanning from the trench base  893  to the upper cover  86  is concentrical with the circular trench  89  or the round island  90 . The upper cover  86  and the peripheral wall  88  may be included in a single molded piece, and the lower cover  87  is included in another single molded piece. In such an embodiment. The peripheral wall  88  may be a cylindrical sidewall extending downward from an outer perimeter of the upper cover  86 . In an alternative embodiment (not shown), the lower cover  87  and the peripheral wall  88  are included in a single molded piece, and the upper cover  86  is included in another single molded piece. In another alternative embodiment (not shown), the upper cover  86  is included in a first single molded piece, the peripheral wall  88  is included in a second single molded piece, and the lower cover  87  is included in a third single molded piece. In  FIG. 24 , four flat partition member  92   b  may be evenly distributed within a single space consisting of the space  96  and the space between the circular partition member  93   b  and the peripheral wall  88 . The four flat partition member  92   b  may be extended along a direction radial from the center of the circular trench  89  or the round island  90 . The four flat partition member  92   b  may divide the above single space into four chambers  99 . The peripheral wall  88  in  FIG. 24  may have irregularity or irregularities such as hole(s), cavity or cavities, flat(s), groove(s), or any combination thereof. For example, a hanger recess on peripheral wall  88  may be needed to accommodate a hanger such as a loop, a hook, or a clip. For example, the hanger can be a loop sufficiently strong to support carrying of the container  82  by the loop when the container  82  is full of content such as liquid. The hanger may provide a convenient method of attaching the container system  80  to a backpack, gym bag or the like. In an embodiment as shown in  FIG. 25 , the upper cover  86  and a part of the peripheral wall  88  are included in a single molded piece; and the lower cover  87  and the remaining part of the peripheral wall  88  are included in a single molded piece. 
     When one or more reinforcement partition members  91  are present, it should be appreciated that all the one or more reinforcement partition members  91  and the upper cover  86  may be included in a single molded piece. All the one or more reinforcement partition members  91  and the lower cover  87  may be included in a single molded piece. All the one or more reinforcement partition members  91  and the peripheral wall  88  may be included in a single molded piece. Alternatively, the one or more reinforcement partition members  91  may be separated into 2 or 3 parts. The 2 or 3 parts and any 2 or all 3 of the upper cover  86 , the lower cover  87 , and the peripheral wall  88  may be included in 2 or 3 single molded pieces, respectively. 
       FIGS. 26-32  illustrate a third modification of the basic example of container system  80  as shown in  FIGS. 14-17 . As compared to  FIG. 24 ,  FIG. 26  includes one or two additional finger receptacles  88   a  on the peripheral wall  88 , and a void structure  224  in the handle. In  FIG. 27 , the lid  81  is disconnected from the container such as a bottle  82   FIG. 28  shows the internal structure of the lid  81 .  FIG. 29  is a top view of the lid  81  showing two cutting plane lines A-A and B-B.  FIG. 30  is a cross-sectional view of the lid  81  along cutting plane A-A.  FIG. 31  is a cross-sectional view of the lid  81  along cutting plane B-B.  FIG. 32  illustrates the internal structure of the lid  81 , after the lower cover  87  is removed. 
       FIGS. 33-35  illustrate a fifth modification of the basic example of container system  80  as shown in  FIGS. 14-17 .  FIG. 33  shows the container system  80  with an outlet opening  86   a  for releasing liquid content within the container  82 .  FIG. 34  is a side view of the container system  80  showing a cutting plane line D-D.  FIG. 35  is a cross-sectional view of the container system  80  along cutting plane D-D The island  90  may or may not have irregularity or irregularities such as hole(s), groove(s), basin(s), plateau(s), or any combination thereof. For example, the upper cover  86  may have a hole, and the island  90  may also have a hole. An outlet opening  86   a  is formed through the two holes for releasing liquid content within the container  82 . 
     Referring back to  FIGS. 14-17 , lid  81  comprises an upper cover  86 , a lower cover  87 , and a peripheral wall  88  (which is preferably closed) located between the upper cover  86  and the lower cover  87  and configured to connect the two covers ( 86 ,  87 ). The transition or junction between the upper cover  86  and the peripheral wall  88  may be angled with an angle between 45° to 135° such as around 90° However, as shown in  FIG. 36 , the transition or junction between the upper cover  86  and the peripheral wall  88  may be continuously curved (or smooth) without any angle formed between two planes. In other words, the upper cover  86  and the peripheral wall  88  may be shaped like a dome or an up-side-down bowl. 
     In the foregoing specification, embodiments of the present invention have been described with reference to numerous specific details that may vary from implementation to implementation. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense. The sole and exclusive indicator of the scope of the invention, and what is intended by the applicant to be the scope of the invention, is the literal and equivalent scope of the set of claims that issue from this application, in the specific form in which such claims issue, including any subsequent correction.