Collapsible Food Containers with Divider Device
The present invention relates to a novel food storage device. The device is a set of food storage containers that are collapsible, range in size and shape, and nest within each other. The device comprises a base component with a flexible body and grooves around an inner perimeter, to give the base component a rigid structure when expanded. Further, the base component comprises similar-shaped lockable inserts containing freezer gel, thus allowing the food to be separated and kept cold when stored. The lockable inserts are locked into the grooves by wedging the inserts into the expanded sides of the base component via a friction fit design. Further, the base component can also comprise a plurality of rigid, vertical spacers/dividers.
The present application claims priority to, and the benefit of, U.S. Provisional Application No. 63/395,071, which was filed on Aug. 4, 2022, and is incorporated herein by reference in its entirety.
FIELD OF THE INVENTIONThe present invention relates generally to the field of food storage devices. More specifically, the present invention relates to an improved food storage device that provides users with nesting food storage containers capable of keeping food stored and organized in a refrigerator or freezer. Accordingly, the present disclosure makes specific reference thereto. Nonetheless, it is to be appreciated that aspects of the present invention are also equally applicable to other like applications, devices, and methods of manufacture.
BACKGROUNDBy way of background, this invention relates to improvements in food storage devices. Generally, storing leftover food in refrigerators and freezers can be a difficult and frustrating experience. People may try to place the food in different plastic containers; however, these take up considerable space and may not be able to accommodate several meals worth of leftovers. These containers are also susceptible to being squashed when stored in a bag, backpack, etc. Some may stack food items like pizza and wrap it in plastic wrap or aluminum foil and then have trouble retrieving individual pieces from the freezer. Further, ice is messy when using food storage containers outside of the home.
Conventional rigid containers or polymeric storage bags are well known in the art. Consumers use these containers and bags for storage of a multitude of materials and purposes. Although these containers and bags are of great utility, they have a variety of limitations and disadvantages. For example, the closure systems on the bags tend to leak, particularly at the sides of the bag. Also, bags typically offer little or no structural integrity and therefore are not ideal storage devices. Further, rigid containers can be cumbersome to store and tend to be more expensive to manufacture than bags. Rigid containers can also have poor quality seals, such that liquid materials contained in the container can leak. As such, a unique food storage container to store food in the refrigerator and freezer is needed.
Therefore, there exists a long-felt need in the art for a food storage device that provides users with nesting food storage containers capable of keeping food stored and organized in a refrigerator or freezer. There is also a long-felt need in the art for a food storage device that allows users to collapse the containers and nest them within one another to accommodate any type of food storage. Further, there is a long-felt need in the art for a food storage device that utilizes BPA-free, stain-free, and food safe materials to construct the containers, allowing them to safely store food and then be cleaned and sanitized in a dishwasher. Moreover, there is a long-felt need in the art for a device that features rigid inserts and dividers with a thin layer of freezer gel, designed to replace ice, allowing users to keep the food items cool without oversaturation. Further, there is a long-felt need in the art for a food storage device that prevents food from being squashed during transport via the rigid dividers and optimal support structure. Finally, there is a long-felt need in the art for a food storage device that improves storage for leftover food without taking up extensive space in a refrigerator or freezer.
The subject matter disclosed and claimed herein, in one embodiment thereof, comprises a food storage device. The device is a set of food storage containers that are collapsible, range in size and shape, and nest within each other. The device comprises a base component that is BPA free, DEHP free, food safe, dishwasher safe, freezer safe, and stain resistant. The base component comprises a flexible body with grooves around an inner perimeter to give the base component a rigid structure when expanded. Further, the base component comprises similar-shaped lockable inserts containing freezer gel, thus allowing the food to be separated and kept cold when stored. The lockable inserts are locked into the grooves by wedging the inserts into the expanded sides of the base component via a friction fit design. Further, the base component can also comprise a plurality of rigid, vertical spacers/dividers and a corresponding lid.
While the body component of the device is flexible, it comprises a rigid bottom, that along with an insert being placed at one of the grooves around the inner perimeter of the device, gives the expanded device a rigid structure. Thus, the inserts maintain the device's shape throughout storage and transport to prevent food from being squashed. The lockable inserts also help keep the food cold. The inserts have the same general shape and size as the base component and are designed not just for their freezing ability, but also for their dividing properties and unique connection to lock in place in the inner perimeter of the device giving the device a rigid structure.
In this manner, the food storage device of the present invention accomplishes all of the foregoing objectives and provides users with a device that keeps food stored and organized in a refrigerator or freezer. The device allows users to collapse the containers and nest them when not in use. The device improves storage for leftover food without taking up extensive space in a refrigerator or freezer. The lockable inserts prevents users from having to individually bag separate food items and doesn't require ice when transporting away from home. Thus, the invention provides less waste and saves time and money.
SUMMARY OF THE INVENTIONThe following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed innovation. This summary is not an extensive overview, and it is not intended to identify key/critical elements or to delineate the scope thereof. Its sole purpose is to present some general concepts in a simplified form as a prelude to the more detailed description that is presented later.
The subject matter disclosed and claimed herein, in one embodiment thereof, comprises a food storage device. The device is a set of food storage containers that are collapsible, range in size and shape, and nest within each other. The device comprises a base component that is BPA free, DEHP free, food safe, dishwasher safe, freezer safe, and stain resistant. The base component comprises a flexible body with grooves around an inner perimeter to give the base component a rigid structure when expanded. Further, the base component comprises similar-shaped lockable inserts containing freezer gel, thus allowing the food to be separated and kept cold when stored. The lockable inserts are locked into the grooves by wedging the inserts into the expanded sides of the base component via a friction fit design. The lockable inserted are secured around the full perimeter of the device, regardless of the device's shape.
In one embodiment, the food storage device is a collapsible food container configured to collapse from a raised position, or first position, in which the container is configured to retain food, to a collapsed position, or second position, in which the container is collapsed for storage and can be nested with other food storage devices.
The collapsible food storage device includes a base component, a sidewall portion, and a rim. The base component forms the bottom of the food storage device. Specifically, the base component comprises a rigid bottom, allowing the food storage device to rest upon a table, a counter, or other support surface without tipping over. The bottom of the food storage device comprises a substantially flattened portion for food to rest upon when placed in the interior cavity of the device.
Generally, the sidewall portion projects outwardly from the base component. Preferably, in use, the sidewalls project upwardly and terminate at a distal end forming the mouth or opening of the device. Specifically, the sidewall portion surrounds and defines an interior cavity of the food storage device configured to receive food for storage or other desired purposes. The sidewall portion is joined to the base component at a lower end of the sidewall portion. The sidewall portion extends upward from the lower end to terminate in an opening. The sidewall portion has an inner surface and an outer surface. The inner surface faces the interior cavity and surrounds the interior cavity. The outer surface faces opposite the interior cavity. The outer surface preferably has a substantially smooth texture. The substantially smooth texture of the outer surface increases the aesthetic appeal of the food storage device, and also allows the contents of the food storage device to be more easily seen through the sidewall portion.
The sidewalls are illustrated to be generally perpendicular to and projecting outwardly from the base component. At least one of the upstanding sidewalls has a groove therein. In one embodiment, all of the sidewalls has a groove therein, creating a groove around the entire perimeter of the device. It is to be recognized that, as illustrated, each of the upstanding sidewalls may be provided with a groove. The groove is generally orthogonal to the direction of collapse and erection of the device, and thus may be generally parallel to the plane of the base component in a preferred embodiment.
In one embodiment, the groove in the at least one sidewall, and preferably all sidewalls, or any combination therebetween, is preferably formed by providing a line of weakness in the sidewall of the device. The line of weakness may be an area of reduced wall thickness, or an area of offset material. The line of weakness allows the sidewalls to collapse either inwardly or outwardly relative to the center and body of the device. In a preferred embodiment, opposed sidewalls collapse in the same disposition. The front and rear sidewalls articulate so that the walls collapse outwardly and away from the container. In contrast, the opposed sidewalls forming the left and right ends of the container articulate to collapse inwardly and toward the center of the container. In this arrangement, each sidewall collapses in an orientation opposite that of the adjacent sidewalls.
Alternatively, adjacent sidewalls may collapse in the same direction, i.e., inwardly or outwardly. This arrangement provides the benefit that, when all of the sidewalls collapse inwardly, the device has a smaller footprint in the collapsed condition. Further, such devices may be more easily stacked in such a collapsed condition. Furthermore, the position of the groove in the sidewall determines the height of the container in the collapsed condition.
The sidewall portion and the base component can be any suitable shape and size as is known in the art. The substantially smooth shape of the outer surface allows the food storage device to be more easily stacked with other similar food containers because any creases in the outer surface need not be aligned for stacking. Similar shaped and sized food storage device are stacked together with other similar food containers if desired.
In another embodiment, the food storage device comprises a sidewall portion having at least two thicknesses. A first portion of the sidewall portion extends upward from a lower end. A second portion of the sidewall portion extends upward from the first portion. The first portion has a thickness that is less than the thickness of the second portion. The thickness of the first portion transitions to the thickness of the second portion at a transition that forms a groove in the inner surface of the sidewall portion.
The varied thickness of the sidewall portion allows the sidewall portion to collapse in a desired manner. In addition, the upper end of the sidewall portion, in the collapsed position, encircles the lower end of the sidewall portion. Specifically, the first portion is flexible and configured to bend. The thinner first portion defines a weaker portion of the sidewall portion which will bend first when downward pressure is applied to the food storage device. The base component, however, is not made of material as thin as the first portion, and therefore does not bend when downward pressure is applied. Downward pressure applied to the sidewall portion therefore causes the sidewall portion to collapse in a desired manner.
To return the food storage device back to the raised position, upward force is applied to the wall portion, to return it back into place. The wall portion therefore bends between a raised position, or first position, in which the wall portion has a height corresponding to the height of second portion, and a collapsed position, or second position, in which the wall portion has a height corresponding to the first portion.
The collapsibility of the food storage device beneficially allows the food storage device to collapse for easy storage of the container. A user may simply press down on the top of the food storage device to bend the wall portion into position. The largest food storage device would be expanded and the smaller food storage devices would be collapsed to nest within each other within the large food storage device. The lids and dividers/inserts would also be nested within the storage devices. During use, for food storage, the food storage device are expanded and filled with food.
The thickness of the collapsible sidewall in the container of the present invention will generally be within the range of from about 1 mil to about 20 mils (about 0.025 mm to about 0.5 mm), preferably from about 2 mils to about 15 mils (about 0.05 mm to about 0.375 mm), even more preferably from about 2 mils to about 10 mils (about 0.05 mm to about 0.25 mm), most preferably from about 3 mils to about 6 mils (about 0.075 mm to about 0.15 mm). When low density polyethylene is used as the polymeric material, especially as the primary polymer, collapsible wall thickness is preferably from about 10 mils to about 20 mils (about 0.25 mm to about 0.50 mm). Wall thicknesses outside these ranges may be used and are intended to be encompassed within the present invention as long as the container sidewalls fulfill the purposes hereof and in particular, remain collapsible and have sufficient strength to form an erectable container suitable for containing the intended materials or contents of the container. The collapsible thicknesses suitable for use will vary according to the type of polymeric material that is used, including the polymer itself and the additives as will be discussed in more detail below. In general, it has been found that as wall thickness is reduced below 1 mil, the wall becomes too weak or becomes susceptible to having holes extending throughout the thickness of the wall. As wall thickness becomes larger, beyond about 20 mils or 0.5 mm, it becomes more difficult to fold and less compact when folded.
By “collapsible sidewall”, what is meant herein, is that the sidewall can be folded by the user at least once to form a 180-degree fold, preferably without forming a permanent crease or fold line in the polymer. To assist in folding or to aid in selecting the location of the fold, the sidewalls may have one or more lines of weakness or grooves. These grooves may be observable, however such intentionally introduced structures should not be confused with stress-related fold or crease lines that only become observable upon folding the sidewalls.
In one embodiment, the food storage device is reversibly transformable between two conditions, a collapsed condition and an erect condition. The device has a first volume associated with its collapsed condition. The device further has a second volume associated with its erect condition. The second volume is greater than the first. The device may be collapsed in stages as the contents are depleted. This provides the benefit of requiring less storage space and removing oxygen from the device if perishable contents are stored therein. Preferably, the second volume is at least 50% less than the first volume. Volume may be ascertained by filling the device with water in both the collapsed and erected conditions. Thus, a food storage device does not have to be fully expanded to function and have a lid secured on it. Users can select how expanded they wish to make the device before filling with food.
In one embodiment, a rim is positioned above the sidewall portion and includes a vertically extending mating portion and an outwardly extending flange. The mating portion is configured to mate with a lid. The outwardly extending flange provides rigidity for the food storage device and a grip point for a user applying or removing the lid.
In another embodiment, the food storage device comprises a lid which can be secured to the rim and the top of the sidewall portion. The lid includes an outer flange at the periphery. A lip extends from the outer flange. The lip is configured for a user to easily grab the lip to remove the lid from the rim and the sidewall portion. Further, the lid, when attached, flexes to form an air-tight seal with the rim of the food storage device. Additionally, the lid may be generally flat, or may have a convex inward or convex outward orientation, as desired. For certain embodiments, it is preferred that the lid be substantially flat so that the device is stackable.
In one embodiment, the lid comprises a label area, or other suitable area for labeling the contents of the food container.
In another embodiment, the lid comprises a vent. The vent allows air or steam to exit through the vent if the food storage device were used as a microwave steamer for example.
Further, a vent plug extends through and fills the vent. The vent plug is configured to be slid within the vent between a closed position and an open position, with the vent plug in the closed position preventing air or steam from exiting through the vent, and the vent plug in the open position allowing air or steam to exit through the vent.
If the lid forms an airtight seal with the rim, then air is prevented from exiting or entering the interior of the food storage device. Accordingly, with the lid in place in this configuration, the food storage device cannot be collapsed from the raised position to the collapsed position because the air within the food storage device cannot exit to account for the reduced internal volume of the food storage device. In addition, if the lid forms an airtight seal with the rim, and the food storage device is in the collapsed position, then the food storage device cannot be raised to the raised position because air cannot enter the food storage device to account for the increased internal volume of the food container. Thus, the lid serves as a stopper to prevent the food storage device from inadvertently being converted between the raised or collapsed position.
The storage device may be used in a variety of implementations, from short term food storage in which food is temporarily kept in the containers (for example, during cooking) to long term food storage in which food is kept in the containers for extended periods of time in a freezer and/or refrigerator. Further, the storage device can be utilized outside the home, such as picnics, work lunches, school lunches, etc.
Any of the embodiments of the food storage device may be constructed in the following manner. The food storage devices are preferably formed from a single molding process in which the base components are molded integral with the respective wall portions. The device may be blow molded, injection molded, or preferably thermoformed. The single molding process allows the base component to not need to be joined to the respective wall portions in a separate manufacturing step. The integral mold reduces the time and expense of the manufacturing process. Preferably, but not necessarily, the food storage device is formed from a unitary sheet of material. By forming the device from a unitary sheet of material, the presence of seal lines within the body of the device is eliminated and pathways for leakage are reduced.
Preferably, the food storage device is made of polymeric materials. The polymeric materials provide sufficient strength to support the food storage device in the raised position, but also provides sufficient flexibility to allow the food storage device to bend and collapse to the collapsed position. In addition, the polymeric material has a generally low toxicity, to allow it to contact food and store food. Preferably, all components of the food storage device, including lids that fit on the food containers, are made of polymeric materials. In addition, the polymeric material used for the sidewall portion and the base component is preferably configured to allow objects to be visible within the respective food container. These parts are made of polymeric material that is transparent or translucent to allow objects to be visible within the respective food storage device. In addition, preferably, the rims are made of a colored polymeric material that is colored different than the respective sidewall portions and base component. The colored rims allow the user to easily identify and remember the contents of the respective food storage device based on the color of the rim.
The polymeric materials selected for use in the present invention can include any polymers that fulfill the purposes of the invention or which, with the addition of additives, can be modified to fulfill the purposes of the invention. Polymers suitable for use herein include polyolefins, such as polypropylenes, polyethylenes, and polyvinyl chlorides. The polymers preferably are those selected from the group consisting of polyethylenes, polypropylenes, and mixtures thereof. Included within the above categories of polymers are copolymers containing ethylene monomer units and propylene monomer units, polymers containing substituted ethylene and/or propylene monomer units, and copolymers further containing other monomer units that are derived from monomers that are polymerizable with ethylene and/or propylene monomers. Also included are branched chain and linear polymers.
Also, preferably, the polymeric materials for use herein are either clear or translucent, such that the user is able to visually observe the contents of the container through the walls of the container with the naked eye. Clarity can be enhanced by the use of clarifying agents during manufacture of the polymeric material according to techniques well-known in the art. Clarifying agents include, without limitation, sulfur, selenium, antimony, proteins and carbohydrates, silicates, graphite, inorganic molecules, and organic molecules.
In addition to the polymer compounds themselves, the polymeric materials for use herein may contain one or more additives such as, without limitation, antistatic agents, antioxidants, colorants, flame retardants, lubricants, mold release agents, plasticizers, and ultra-violet light stabilizers, and combinations thereof. Such additives and their use, including the levels thereof, are well known in the polymer art. Typically, they are added at a level of from about 100 ppm to about 5000 ppm, by weight of the polymer.
In one embodiment, the food storage device comprises a plurality of lockable insert components that are arranged horizontally within the interior of the device. The plurality of lockable insert components comprise freezer gel or other suitable cooling fluid which allows the food to be separated and kept cold when stored. In another embodiment, the lockable insert components are thin, plastic dividers without freezer gel. These plastic dividers are thinner than the freezer gel insert components and provide more room for food. The lockable insert components would be inserted into the grooves of the interior of the sidewalls and retained via a friction fit design. Each lockable insert component comprises a thin divider filled with a thin layer of freezer gel that can be frozen and which takes the place of ice. One of the lockable insert components can be positioned in the bottom of the base component and additional lockable insert components are secured above the bottom component within the grooves of the side walls. Specifically, the grooves are configured to open and lock in place the insert component via the friction fit design. Thus, the inset components lock into place by wedging in the grooves of the sidewalls. Furthermore, the insert components would have the same shape/footprint of the base component and act to not only keep the stored food cold, but also to divide/separate the stored food within the device. Additionally, the horizontal lockable insert components prevent food from mixing during storage and/or transport.
Additionally, while the body of the device is flexible, the rigid base component and the insert components spaced within the grooves of the sidewalls or inner perimeter of the device give the expanded device a rigid structure. Thus allowing the device to maintain its structure and shape throughout storage and transport to prevent squashed food.
In another embodiment, the food storage device comprises a plurality of rigid, vertical spacers/dividers. The vertical spacers allow one layer to be divided into multiple compartments. The vertical spacers are flat and easily injection molded. Typically, two of the vertical spacers would interlock in a perpendicular configuration, such as dividers in a cardboard box. Accordingly, the vertical spacers would interlock and then be positioned in the device, regardless of the container's shape. The vertical spacers/dividers prevent food from mixing during storage and/or transport.
In yet another embodiment, the food storage device comprises a plurality of indicia.
In yet another embodiment, a method of storing food in a refrigerator or freezer is disclosed. The method includes the steps of providing a food storage device comprising a base component with freezer gel inserts for rigidity. The method also comprises choosing a specific style and size of the food storage device depending on the needs and/or wants of a user. Further, the method comprises expanding the base component of the device. Additionally, the method comprises positioning food and freezer gel inserts within the base component. The method also comprises positioning vertical spacers within the base component. Finally, the method comprises sealing a lid on the device for transport or storage in a freezer or refrigerator.
Numerous benefits and advantages of this invention will become apparent to those skilled in the art to which it pertains, upon reading and understanding the following detailed specification.
To the accomplishment of the foregoing and related ends, certain illustrative aspects of the disclosed innovation are described herein in connection with the following description and the annexed drawings. These aspects are indicative, however, of but a few of the various ways in which the principles disclosed herein can be employed and are intended to include all such aspects and their equivalents. Other advantages and novel features will become apparent from the following detailed description when considered in conjunction with the drawings.
The description refers to provided drawings in which similar reference characters refer to similar parts throughout the different views, and in which:
The innovation is now described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding thereof. It may be evident, however, that the innovation can be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate a description thereof. Various embodiments are discussed hereinafter. It should be noted that the figures are described only to facilitate the description of the embodiments. They are not intended as an exhaustive description of the invention and do not limit the scope of the invention. Additionally, an illustrated embodiment need not have all the aspects or advantages shown. Thus, in other embodiments, any of the features described herein from different embodiments may be combined.
As noted above, there is a long-felt need in the art for a food storage device that provides users with nesting food storage containers capable of keeping food stored and organized in a refrigerator or freezer. There is also a long-felt need in the art for a food storage device that allows users to collapse the containers and nest them within one another to accommodate any type of food storage. Further, there is a long-felt need in the art for a food storage device that utilizes BPA-free, stain-free, and food safe materials to construct the containers allowing them to safely store food and then be cleaned and sanitized in a dishwasher. Moreover, there is a long-felt need in the art for a device that features rigid inserts and dividers with a thin layer of freezer gel designed to replace ice, allowing users to keep the food items cool without oversaturation. Further, there is a long-felt need in the art for a food storage device that prevents food from being squashed during transport via the rigid dividers and optimal support structure. Finally, there is a long-felt need in the art for a food storage device that improves storage for leftover food without taking up extensive space in a refrigerator or freezer.
The present invention, in one exemplary embodiment, is a novel food storage device. The device is a set of food storage containers that are collapsible, range in size and shape, and nest within each other. The base component comprises a flexible body with grooves around an inner perimeter to give the base component a rigid structure when expanded. Further, the base component comprises similar-shaped lockable inserts containing freezer gel, thus allowing the food to be separated and kept cold when stored. The lockable inserts are locked into the grooves by wedging the inserts into the expanded sides of the base component via a friction fit design. Further, the base component can also comprise a plurality of rigid, vertical spacers/dividers. The present invention also includes a novel method of storing food in a refrigerator or freezer. The method includes the steps of providing a food storage device comprising a base component with freezer gel inserts for rigidity. The method also comprises choosing a specific style and size of the food storage device, depending on the needs and/or wants of a user. Further, the method comprises expanding the base component of the device. Additionally, the method comprises positioning food and freezer gel inserts within the base component. The method also comprises positioning vertical spacers within the base component. Finally, the method comprises sealing a lid on the device for transport or storage in a freezer or refrigerator.
Referring initially to the drawings,
The food storage device 100 may be used in a variety of implementations, from short term food storage in which food is temporarily kept in the containers (during cooking for example) to long term food storage in which food is kept in the containers for extended periods of time in a freezer and/or refrigerator, also transporting food out of the house, such as with lunches and picnics.
Further, the food storage device 100 is a collapsible food container configured to collapse from a raised position, or first position 106, in which the container is configured to retain food, to a collapsed position, or second position 108, in which the container is collapsed for storage and can be nested with other food storage devices 100.
The collapsible food storage device 100 includes a base component 102, a sidewall portion 110, and a rim 112. The base component 102 forms the bottom of the food storage device 100. Specifically, the base component 102 comprises a rigid bottom, allowing the food storage device 100 to rest upon a table, a counter, or other support surface without tipping over. The bottom of the food storage device 100 comprises a substantially flattened portion for food to rest upon when placed in the interior cavity 114 of the device 100. Generally, the base component 102 is BPA free, DEHP free, food safe, dishwasher safe, freezer safe, and stain resistant.
Generally, the sidewall portion 110 projects outwardly from the base component 102. Preferably, in use, the sidewalls 110 project upwardly and terminate at a distal end 116 forming the mouth or opening 118 of the device 100. Specifically, the sidewall portion 110 surrounds and defines an interior cavity 114 of the food storage device 100 configured to receive food for storage or other desired purposes. The sidewall portion 110 is joined to the base component 102 at a lower end 120 of the sidewall portion 110. The sidewall portion 110 extends upward from the lower end 120 to terminate in an opening 118. The sidewall portion 110 has an inner surface 122 and an outer surface 124. The inner surface 122 faces the interior cavity 114 and surrounds the interior cavity 114. The outer surface 124 faces opposite the interior cavity 114. The outer surface 124 preferably has a substantially smooth shape, which does not have any creases or ridges. The substantially smooth shape of the outer surface 124 increases the aesthetic appeal of the food storage device 100, and also allows the contents of the food storage device 100 to be more easily seen through the sidewall portion 110.
The sidewalls 110 are illustrated to be generally perpendicular to and projecting outwardly from the base component 102. At least one of the upstanding sidewalls 110 has a groove 126 therein. It is to be recognized that, as illustrated, each of the upstanding sidewalls 110 may be provided with a groove 126. The groove 126 is generally orthogonal to the direction of collapse and erection of the device 100, and thus may be generally parallel to the plane of the base component 102 in a preferred embodiment.
Furthermore, the groove 126 in the at least one sidewall 110, and preferably all sidewalls 110, or any combination therebetween, is preferably formed by providing a line of weakness in the sidewall 110 of the device 100. The line of weakness may be an area of reduced wall thickness, or an area of offset material. The line of weakness allows the sidewalls 110 to collapse either inwardly or outwardly relative to the center and body of the device 100. In a preferred embodiment, opposed sidewalls 110 collapse in the same disposition. The front and rear sidewalls 110 articulate so that the sidewalls 119 collapse outwardly and away from the container. In contrast, the opposed sidewalls 110, forming the left and right ends of the container, articulate to collapse inwardly and toward the center of the container. In this arrangement, each sidewall 110 collapses in an orientation opposite that of the adjacent sidewalls 110.
Alternatively, adjacent sidewalls 110 may collapse in the same direction, i.e., inwardly or outwardly. This arrangement provides the benefit that when all of the sidewalls 110 collapse inwardly, the device 100 has a smaller footprint in the collapsed condition. Further, such devices 100 may be more easily stacked in such a collapsed condition. Furthermore, the position of the groove 126 in the sidewall 110 determines the height of the container in the collapsed condition.
The sidewall portion 110 and the base component 102 can be any suitable shape and size as is known in the art. The substantially smooth shape of the outer surface 124 allows the food storage device 100 to be more easily stacked with other similar food containers because any creases in the outer surface 124 need not be aligned for stacking. Similar shaped and sized food storage devices 100 are stacked together with other similar food containers if desired.
In another embodiment, the food storage device 100 comprises a sidewall portion 110 having at least two thicknesses. A first portion 128 of the sidewall portion 110 extends upward from a lower end 120. A second portion 130 of the sidewall portion 110 extends upward from the first portion 128. The first portion 128 has a thickness that is less than the thickness of the second portion 130. The thickness of the first portion 128 transitions to the thickness of the second portion 130 at a transition that forms a groove 126 in the inner surface 122 of the sidewall portion 110.
The varied thickness of the sidewall portion 110 allows the sidewall portion 110 to collapse in a desired manner. In addition, the upper end of the sidewall portion 110, in the collapsed position 108, encircles the lower end of the sidewall portion 110. Specifically, the first portion 128 is flexible and configured to bend. The thinner first portion 128 defines a weaker portion of the sidewall portion 110 which will bend first when downward pressure is applied to the food storage device 100. The base component 102, however, is not made of material as thin as the first portion 128, and therefore does not bend when downward pressure is applied. Downward pressure applied to the sidewall portion 110 therefore causes the sidewall portion 110 to collapse in a desired manner.
To return the food storage device 100 back to the raised position 106, upward force is applied to the sidewall portion 110 to return it back into place. The sidewall portion 110 therefore bends between a raised position, or first position 106, in which the sidewall portion 110 has a height corresponding to the height of the second portion 130, and a collapsed position, or second position 108, in which the sidewall portion 110 has a height corresponding to the first portion 128.
The collapsing of the food storage device 100 beneficially allows the food storage device 100 to collapse for easy storage of the container. A user may simply press down on the top of the food storage device 100 to bend the sidewall portion 110 into position.
The thickness of the collapsible sidewall 110 in the containers of the present invention will generally be within the range of from about 1 mil to about 20 mils (about 0.025 mm to about 0.5 mm), preferably from about 2 mils to about 15 mils (about 0.05 mm to about 0.375 mm), even more preferably from about 2 mils to about 10 mils (about 0.05 mm to about 0.25 mm), most preferably from about 3 mils to about 6 mils (about 0.075 mm to about 0.15 mm). When low density polyethylene is used as the polymeric material, especially as the primary polymer, collapsible wall thickness is preferably from about 10 mils to about 20 mils (about 0.25 mm to about 0.50 mm). Wall thicknesses outside these ranges may be used and are intended to be encompassed within the present invention as long as the container sidewalls 110 fulfill the purposes hereof and in particular, remain collapsible and have sufficient strength to form an erectable container suitable for containing the intended materials or contents of the container. The collapsible thicknesses suitable for use will vary according to the type of polymeric material that is used, including the polymer itself and the additives as will be discussed in more detail below. In general, it has been found that as wall thickness is reduced below 1 mil, the wall becomes too weak or becomes susceptible to having holes extending throughout the thickness of the wall. As wall thickness becomes larger, beyond about 20 mils or 0.5 mm, it becomes more difficult to fold and less compact when folded.
By “collapsible sidewall”, what is meant herein is that the sidewall 110 can be folded by the user at least once to form a 180-degree fold, preferably without forming a permanent crease or fold line in the polymer. To assist in folding or to aid in selecting the location of the fold, the sidewalls 110 may have one or more lines of weakness or grooves 126. These grooves 126 may be observable, however such intentionally introduced structures should not be confused with stress-related fold or crease lines that only become observable upon folding the sidewalls 110.
In one embodiment, the food storage device 100 is reversibly transformable between two conditions, a collapsed condition 108 and an erect condition 106. The device 100 has a first volume associated with its collapsed condition 108. The device 100 further has a second volume associated with its erect condition 106. The second volume is greater than the first. The device 100 may be collapsed in stages, as the contents are depleted. This provides the benefits of requiring less storage space and removing oxygen from the device 100 if perishable contents are stored therein. Preferably, the second volume is at least 50% less than the first volume. Volume may be ascertained by filling the device 100 with water in both the collapsed 108 and erected 106 conditions.
As shown in
As shown in
In one embodiment, the food storage device 100 comprises a lid 304 which can be secured to the rim 112 and the top of the sidewall portion 110. The lid 304 includes an outer flange 302 at the periphery. A lip 306 extends from the outer flange 302. The lip 306 is configured for a user to grab, to easily remove the lid 304 from the rim 112 and the sidewall portion 110. Further, the lid 304 when attached, flexes to form an air-tight seal with the rim 112 of the food storage device 100. Additionally, the lid 304 may be generally flat, or may have a convex inward or convex outward orientation, as desired. For certain embodiments, it is preferred that the lid 304 be substantially flat so that the device 100 is stackable.
Furthermore, the lid 304 comprises a label area 308, or other suitable area for labeling the contents of the food container. In another embodiment, the lid 304 comprises a vent 310. The vent 310 allows air or steam to exit through the vent 310, if the food storage device 100 were used as a microwave steamer for example. Any suitable vent 310 can be utilized as is known in the art, depending on the needs and/or wants of a user. Further, multiple vents 310 can be utilized as is known in the art.
Additionally, a vent plug 312 extends through and fills the vent 310. The vent plug 312 is configured to be slid within the vent 310 between a closed position and an open position, with the vent plug 312 in the closed position preventing air or steam from exiting through the vent 310, and the vent plug 312 in the open position allowing air or steam to exit through the vent 310.
If the lid 304 forms an airtight seal with the rim 112, then air is prevented from exiting or entering the interior 114 of the food storage device 100. Accordingly, with the lid 304 in place in this configuration, the food storage device 100 cannot be collapsed from the raised position 106 to the collapsed position 108 because the air within the food storage device 100 cannot exit to account for the reduced internal volume of the food storage device 100. In addition, if the lid 304 forms an airtight seal with the rim 112, and the food storage device 100 is in the collapsed position 108, then the food storage device 100 cannot be raised to the raised position 106, because air cannot enter the food storage device 100 to account for the increased internal volume of the food container. Thus, the lid 304 serves as a stopper, to prevent the food storage device 100 from inadvertently being converted between the raised 106 or collapsed 108 position.
As shown in
Furthermore, in another embodiment, the diameter of the food storage device 100 is smaller towards the bottom of the device 100 and the lockable insert components 104 are friction fit into the larger diameter of the device 100 and won't slip down or move during transport. The lockable insert components 104 are then placed at the widest part of the food storage device 100 and prevented from being pushed down. Further, the lockable insert components 104 are friction fit around a full perimeter of the devices 100 creating a seal and preventing food from above the lockable insert component 104 to drip down into food placed below the lockable insert component 104. Additionally, the food storage devices 100 can be any suitable shape as is known in the art, such as triangular, square, trapezoidal, etc. However, in this embodiment, the diameter of the device 100 progresses from large to small, allowing the lockable insert components 104 to be inserted into the larger part of the diameter and secured, as well as being prevented from being pushed down due to the small diameter.
Additionally, while the body of the device 100 is flexible, the rigid base component 102 and the insert components 104 spaced within the grooves 126 of the sidewalls 110 or inner perimeter of the device 100, give the expanded device 100 a rigid structure. Thus, allowing the device 100 to maintain its structure and shape throughout storage and transport to prevent squashed food.
As shown in
Preferably, the food storage device 100 is made of polymeric materials. The polymeric materials provide sufficient strength to support the food storage device 100 in the raised position, but also provides sufficient flexibility to allow the food storage device 100 to bend and collapse to the collapsed position. In addition, the polymeric material has a generally low toxicity to allow it to contact food and store food. Preferably, all components of the food storage device 100, including lids 304 that fit on the food containers, are made of polymeric materials. In addition, the polymeric material used for the sidewall portion 110 and the base component 102 is preferably configured to allow objects to be visible within the respective food container. These parts are made of polymeric material that is transparent or translucent to allow objects to be visible within the respective food storage device 100. In addition, preferably, the rims 112 are made of a colored polymeric material that is colored different than the respective sidewall portions 110 and base component 102. The colored rims 112 allow the user to more easily identify and remember the contents of the respective food storage device 100 based on the color of the rim 112.
The polymeric materials selected for use in the present invention can include any polymers that fulfill the purposes of the invention or which, with the addition of additives, can be modified to fulfill the purposes of the invention. Polymers suitable for use herein include polyolefins, such as polypropylenes, polyethylenes, and polyvinyl chlorides. The polymers are preferably those selected from the group consisting of polyethylenes, polypropylenes, and mixtures thereof. Included within the above categories of polymers, are copolymers containing ethylene monomer units and propylene monomer units, polymers containing substituted ethylene and/or propylene monomer units, and copolymers further containing other monomer units that are derived from monomers that are polymerizable with ethylene and/or propylene monomers. Also included are branched chain and linear polymers.
Also, preferably, the polymeric materials for use herein are either clear or translucent, such that the user is able to visually observe the contents of the container through the walls of the container with the naked eye. Clarity can be enhanced by the use of clarifying agents during manufacture of the polymeric material, according to techniques well-known in the art. Clarifying agents include, without limitation, sulfur, selenium, antimony, proteins and carbohydrates, silicates, graphite, inorganic molecules and organic molecules.
In addition to the polymer compounds themselves, the polymeric materials for use herein may contain one or more additives such as, without limitation, antistatic agents, antioxidants, colorants, flame retardants, lubricants, mold release agents, plasticizers, and ultra-violet light stabilizers, and combinations thereof. Such additives and their use, including the levels thereof, are well known in the polymer art. Typically, they are added at a level of from about 100 ppm to about 5000 ppm, by weight of the polymer.
Further, the food storage device 100 comprises a plurality of indicia 500. The base component 102 of the device 100 may include advertising, a trademark, or other letters, designs, or characters, printed, painted, stamped, or integrated into the base component 102, or any other indicia 500 as is known in the art. Specifically, any suitable indicia 500 as is known in the art can be included, such as but not limited to, patterns, logos, emblems, images, symbols, designs, letters, words, characters, animals, advertisements, brands, etc., that may or may not be food storage, or brand related.
In another embodiment, the food storage device 100 comprises a lid 304 with a flip handle 501 that pivots from a pin. This allows increased rigidity for the food storage device 100, especially for bigger sized devices 100. Also allows the device 100 and lid 304 to be secured, allowing the device 100 to function as a lunchbox without need of a bag or other transport item.
In another embodiment, the food storage device 100 comprises a lid 304 with a tab 502 and through-hole 503 that protrudes out from the lid 304. This tab 502 allows a user to attach a carabiner or clip to connect the lid 304 and device 100 to a user's backpack, bookbag, etc. The tab 502 and through-hole 503 can be any suitable size as is known in the art.
Certain terms are used throughout the following description and claims to refer to particular features or components. As one skilled in the art will appreciate, different users may refer to the same feature or component by different names. This document does not intend to distinguish between components or features that differ in name but not structure or function. As used herein “food storage device”, “storage device”, “collapsible food storage device”, and “device” are interchangeable and refer to the food storage device 100 of the present invention.
Notwithstanding the foregoing, the food storage device 100 of the present invention can be of any suitable size and configuration as is known in the art without affecting the overall concept of the invention, provided that it accomplishes the above-stated objectives. One of ordinary skill in the art will appreciate that the food storage device 100 as shown in
Various modifications and additions can be made to the exemplary embodiments discussed without departing from the scope of the present invention. While the embodiments described above refer to particular features, the scope of this invention also includes embodiments having different combinations of features and embodiments that do not include all of the described features. Accordingly, the scope of the present invention is intended to embrace all such alternatives, modifications, and variations as fall within the scope of the claims, together with all equivalents thereof.
What has been described above includes examples of the claimed subject matter. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the claimed subject matter, but one of ordinary skill in the art may recognize that many further combinations and permutations of the claimed subject matter are possible. Accordingly, the claimed subject matter is intended to embrace all such alterations, modifications and variations that fall within the spirit and scope of the appended claims. Furthermore, to the extent that the term “includes” is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term “comprising” as “comprising” is interpreted when employed as a transitional word in a claim.
Claims
1. A food storage device that provides users with food storage containers capable of keeping food stored and organized, the food storage device comprising:
- a base component;
- a sidewall portion;
- a rim; and
- a plurality of lockable inserts that are thin, plastic dividers; and
- wherein the plurality of lockable inserts provide rigidity to the base component and the sidewall portion and divide food stored therein; and
- further wherein the food storage device is configured to collapse from a raised position, in which the food storage device is configured to retain food, to a collapsed position, in which the food storage device is collapsed for storage and can be nested with other food storage devices.
2. The food storage device of claim 1, wherein a diameter of the food storage device progresses from large to small, allowing the plurality of lockable insert components to be inserted into a larger part of the diameter and secured around a full perimeter of the food storage device.
3. The food storage device of claim 2, wherein the sidewall portion is perpendicular to and projects outwardly from the base component and terminates at a distal end to form an opening.
4. The food storage device of claim 3, wherein the sidewall portion surrounds and defines an interior cavity of the food storage device configured to receive food for storage.
5. The food storage device of claim 4, wherein the sidewall portion is comprised of an inner surface and an outer surface.
6. The food storage device of claim 5, wherein the sidewall portion comprises a groove therein that is generally orthogonal to a direction of collapse and erection of the food storage device.
7. The food storage device of claim 6, wherein the groove is formed by providing a line of weakness in the sidewall portion.
8. The food storage device of claim 7, wherein the line of weakness is an area of reduced wall thickness.
9. The food storage device of claim 8, wherein the line of weakness allows the sidewall portion to collapse either inwardly or outwardly relative to the food storage device.
10. The food storage device of claim 9 further comprising a plurality of rigid, vertical spacers.
11. The food storage device of claim 10 wherein the plurality of rigid, vertical spacers are configured to interlock in a perpendicular configuration.
12. The food storage device of claim 11 wherein the rim is positioned above the sidewall portion and comprises a vertically extending mating portion and an outwardly extending flange.
13. The food storage device of claim 12, wherein the vertically extending mating portion is configured to mate with a lid and the outwardly extending flange provides rigidity for the food storage device and a grip point for a user applying or removing the lid from the food storage device.
14. The food storage device of claim 13, wherein the lid comprises a label area and a flip handle.
15. The food storage device of claim 14, wherein the plurality of lockable inserts comprise a freezer gel.
16. The food storage device of claim 15, wherein the plurality of lockable inserts would be inserted into the groove of the sidewall portion and retained therein via a friction fit design that prevents leaks.
17. A food storage device that provides users with food storage containers capable of keeping food stored and organized, the food storage device comprising:
- a base component;
- a sidewall portion;
- a rim;
- a lid with a tab and through-hole; and
- a plurality of lockable freezer gel inserts; and
- wherein the sidewall portion is perpendicular to and projects outwardly from the base component and terminates at a distal end forming an opening;
- wherein the sidewall portion surrounds and defines an interior cavity of the food storage device configured to receive food for storage;
- wherein the sidewall portion has a groove therein that is generally orthogonal to a direction of collapse and erection of the food storage device;
- wherein the groove is formed by providing a line of weakness in the sidewall portion;
- wherein the plurality of lockable freezer gel inserts provide rigidity to the base component and the sidewall portion and divide food stored therein;
- wherein the food storage device is configured to collapse from a raised position, in which the food storage device is configured to retain food, to a collapsed position, in which the food storage device is collapsed for storage and can be nested with other food storage devices; and
- further wherein the rim is positioned above the sidewall portion and includes a vertically extending mating portion for mating with the lid and an outwardly extending flange that provides rigidity for the food storage device and a grip point for a user applying or removing the lid.
18. The food storage device of claim 17 further comprising a plurality of indicia.
19. The food storage device of claim 18 further comprising a plurality of rigid, vertical spacers that would interlock in a perpendicular configuration.
20. A method of storing food in a refrigerator or freezer comprising the steps of:
- providing a food storage device comprising a base component with a plurality of freezer gel inserts for rigidity;
- choosing a specific style and size of the food storage device depending on the needs or wants of a user;
- expanding the base component of the food storage device;
- positioning food and the plurality of freezer gel inserts within the base component;
- positioning a plurality of vertical spacers within the base component; and
- sealing a lid on the food storage device for transport or storage in a freezer or refrigerator.
Type: Application
Filed: Mar 8, 2023
Publication Date: Feb 8, 2024
Inventors: Dale Greeson, JR. (Lake Forest, IL), Lex Depp, JR. (Oak Ridge, NC)
Application Number: 18/180,202
