JP2008534400A - Container assembly with releasable locking feature - Google Patents

Abstract

【Task】
A container assembly includes first and second containers. The first container (10) includes a first body portion (12) and a first edge (14). The first edge (14) is a first plurality of ribs (20) that project generally upwardly from the edge such that a first cavity is formed between adjacent ribs. With ribs. The first edge (14) has a generally convex shape. The second container (110) includes a second body portion (112) and a second edge (114). The second edge (114) is a second plurality of ribs (120) that protrudes generally downward from the edge such that a second cavity is formed between adjacent ribs. With ribs. The second edge (114) has a generally concave shape. The first and second edges have shapes that correspond to each other when locked. In the first and second containers, the second plurality of ribs (120) are fitted into the respective ribs of the first plurality of ribs (20), and the first space is replaced with the space of the second space. It is adapted to be releasably lockable by being fitted in place.
[Selection] Figure 1c

Description

Related applications

  The present invention is a continuation-in-part of US patent application Ser. No. 10 / 840,974 entitled “Containers and Container Assemblies with Releaseable Locking Feature”, said US Patent Application being “Containers and Containers of Assemble Receptor Athlete Alesthel Assable Athlete”. This is a continuation of US patent application Ser. No. 10 / 277,303, filed Oct. 22, 2002, entitled “Feature” and issued as US Pat. No. 6,886,704. Both of these applications are incorporated by reference in their entirety.

  The present invention generally relates to container assemblies. More particularly, the present invention relates to a releasably lockable container assembly.

  The use of inexpensive polymer, paper or metal packaging containers is particularly popular for cooking and serving a variety of food products. Polymer, paper and metal containers are widely used to heat food items contained therein. The container assembly generally comprises a cover or lid and a base.

  It would be desirable to have a container assembly that is easy for the customer to open and close. It would also be desirable to provide a container assembly that is releasably lockable and prevents or inhibits material such as liquids from exiting the container.

Summary of the Invention

  According to one embodiment, the container assembly comprises a first container and a second container. The first container includes a first continuous body portion and a first edge. The first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a first plurality of ribs that generally project upward from the edge such that a first cavity is formed between adjacent ribs as the first plurality of ribs. The first edge has a generally convex shape. The second container includes a second continuous body portion and a second edge. The second edge surrounds the second body portion and projects laterally outward from the body portion. The second edge has a second plurality of ribs that project generally downwardly from the edge such that a second cavity is formed between adjacent ribs as a second plurality of ribs. The second edge has a generally concave shape. The first edge and the second edge have shapes that correspond to each other when they are releasably lockable. In the first container and the second container, the second plurality of downward projecting ribs are fitted into the ribs of the first plurality of upper projecting ribs, and the first space is replaced with the space of the second space. It is adapted to be releasably lockable by being fitted in place.

  According to one method, a container assembly is formed by providing a first container that includes a first continuous body portion and a first edge. The first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a first plurality of ribs that generally project upward from the edge such that a first cavity is formed between adjacent ribs as the first plurality of ribs. The first edge has a generally convex shape. A second container is provided that includes a second continuous body portion and a second edge. The second edge surrounds the second body portion and projects laterally outward from the body portion. The second edge has a second plurality of ribs that project generally downwardly from the edge such that a second cavity is formed between adjacent ribs as a second plurality of ribs. The second edge has a generally concave shape. Turning one of the first container and the second container upside down, the first container and the second container are generally aligned, the first and second edges touch each other, and the first and second edges Corresponding to each other such that both the first and second edges are in either a generally concave orientation or a generally convex orientation. Fitting the second plurality of lower projecting ribs into the respective ones of the first plurality of upper projecting ribs, fitting the first cavity into the respective cavity of the second cavity, and the first container and The second container is releasably lockable with each other.

  According to another embodiment, the container assembly comprises a first container and a second container. The first container includes a first continuous body portion and a first edge. The first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a first plurality of upward projecting features in which a first cavity is formed between adjacent upper projecting features as the first plurality of upward projecting features. The first edge has a generally convex shape. The second container includes a second continuous body portion and a second edge. The second edge surrounds the second body portion and projects laterally outward from the body portion. The second edge has a second plurality of downward protruding features in which a second cavity is formed between adjacent downward protruding features as a second plurality of downward protruding features. The second edge has a generally concave shape. The first container and the second container fit the second plurality of downward projecting features into the respective features of the first plurality of upward projecting features, and the first cavity into the second cavity. It is adapted to be releasably lockable by being fitted in the respective cavity.

  According to a further embodiment, the container assembly comprises a first container and a second container. The first container includes a first continuous body portion and a first edge. The first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a generally convex shape. The first edge has a first plurality of ribs that generally project upward from the edge such that a first cavity is formed between adjacent ribs as the first plurality of ribs. The first plurality of upwardly projecting ribs creates a first pattern that is generally perpendicular to the direction of the first edge. The first plurality of upward protruding ribs has at least one undercut. The second container includes a second continuous body portion and a second edge. The second edge surrounds the second body portion and projects laterally outward from the body portion. The second edge has a generally concave shape. The second edge has a second plurality of ribs that project generally downwardly from the edge such that a second cavity is formed between adjacent ribs as a second plurality of ribs. The second plurality of downwardly projecting ribs creates a second pattern that is generally perpendicular to the direction of the second edge. The second plurality of downwardly projecting ribs has at least one undercut. In the first container and the second container, the second plurality of downward projecting ribs are fitted into the respective ribs of the first plurality of upper projecting ribs, and the first space is replaced with the space of the second space. It is adapted to be releasably lockable by being fitted in place.

  According to a further embodiment, the container assembly comprises a first container and a second container. The first container includes a first continuous body portion and a first edge. The first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a first plurality of ribs that generally project upward from the edge such that a first cavity is formed between adjacent ribs as the first plurality of ribs. The first plurality of upwardly projecting ribs creates a first pattern that is generally perpendicular to the direction of the first edge. The second container includes a second continuous body portion and a second edge. The second edge surrounds the second body portion and projects laterally outward from the body portion. The second edge has a second plurality of ribs that project generally downwardly from the edge such that a second cavity is formed between adjacent ribs as a second plurality of ribs. The second plurality of downwardly projecting ribs creates a second pattern that is generally perpendicular to the direction of the second edge. The second container is shaped generally the same as the first container. In the first container and the second container, the second plurality of downward projecting ribs are fitted into the ribs of the first plurality of upper projecting ribs, and the first space is replaced with the space of the second space. It is adapted to be releasably lockable by being fitted in place.

  According to another method, a container assembly is formed. A first container is provided that includes a first continuous body portion and a first edge. The first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a first plurality of ribs that generally project upward from the edge such that a first cavity is formed between adjacent ribs as the first plurality of ribs. The first plurality of upwardly projecting ribs creates a first pattern that is generally perpendicular to the direction of the first edge. A second container is provided that includes a second continuous body portion and a second edge. The second edge surrounds the second body portion and projects laterally outward from the body portion. The second edge has a second plurality of ribs that project generally downwardly from the edge such that a second cavity is formed between adjacent ribs as a second plurality of ribs. The second plurality of downwardly projecting ribs creates a second pattern that is generally perpendicular to the direction of the second edge. The second container is shaped generally the same as the first container. One of the first container and the second container is turned over so that the first container and the second container are generally aligned and the first and second edges are in contact with each other. Fitting the second plurality of lower projecting ribs into the respective ones of the first plurality of upper projecting ribs, fitting the first cavity into the respective cavity of the second cavity, and the first container and The second container is releasably lockable with each other.

  According to yet another embodiment, the container assembly comprises a first container and a second container. The first container includes a first continuous body portion and a first edge. The first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a first plurality of upward projecting features in which a first cavity is formed between adjacent upper projecting features as the first plurality of upward projecting features. The first plurality of upward projecting features creates a first pattern that is generally perpendicular to the direction of the first edge. The second container includes a second continuous body portion and a second edge. The second edge surrounds the second body portion and projects laterally outward from the body portion. The second edge has a second plurality of downward protruding features in which a second cavity is formed between adjacent downward protruding features as a second plurality of downward protruding features. The second plurality of downwardly projecting features creates a second pattern that is generally perpendicular to the direction of the second edge. The second container is shaped generally the same as the first container. The first container and the second container fit the second plurality of downward projecting features into the respective features of the first plurality of upward projecting features, and the first cavity into the second cavity. It is adapted to be releasably lockable by being fitted in the respective cavity.

  According to one embodiment, the container assembly comprises a first container and a second container. The first container includes a first continuous body portion and a first edge. The first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a first plurality of ribs that generally project upward from the edge such that a first cavity is formed between adjacent ribs as the first plurality of ribs. The first edge has a generally convex shape. The second container includes a second continuous body portion and a second edge. The second edge surrounds the second body portion and projects laterally outward from the body portion. The second edge has a second plurality of ribs that project generally downwardly from the edge such that a second cavity is formed between adjacent ribs as a second plurality of ribs. The second edge has a generally concave shape. The second container is shaped substantially the same as the first container. The first edge and the second edge have shapes that correspond to each other when they are releasably lockable. The first container and the second container have the first plurality of upper projecting ribs fitted in the respective second cavities, and the second plurality of lower projecting ribs are fitted in the respective first cavities. Are adapted to be releasably lockable to each other.

  According to one method, a container assembly is formed by providing a first container that includes a first continuous body portion and a first edge. The first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a first plurality of ribs that generally project upward from the edge such that a first cavity is formed between adjacent ribs as the first plurality of ribs. The first edge has a generally convex shape. A second container is provided that includes a second continuous body portion and a second edge. The second edge surrounds the second body portion and projects laterally outward from the body portion. The second edge has a second plurality of ribs that project generally downwardly from the edge such that a second cavity is formed between adjacent ribs as a second plurality of ribs. The second edge has a generally concave shape. The second container is shaped substantially the same as the first container. Turning one of the first container and the second container upside down, the first container and the second container are generally aligned, the first and second edges touch each other, and the first and second edges Corresponding to each other such that both the first and second edges are in either a generally concave orientation or a generally convex orientation. The first plurality of upper projecting ribs are fitted into the respective second cavities, the second plurality of lower projecting ribs are fitted into the respective first cavities, and the first container and the second container are It should be possible to releasably lock each other.

  According to another embodiment, the container assembly comprises a first container and a second container. The first container includes a first continuous body portion and a first edge. The first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a first plurality of upward projecting features in which a first cavity is formed between adjacent upper projecting features as the first plurality of upward projecting features. The first edge has a generally convex shape. The second container includes a second continuous body portion and a second edge. The second edge surrounds the second body portion and projects laterally outward from the body portion. The second edge has a second plurality of downward protruding features in which a second cavity is formed between adjacent downward protruding features as a second plurality of downward protruding features. The second edge has a generally concave shape. The second container is shaped substantially the same as the first container. The first container and the second container fit the first plurality of upward projecting features in their respective second cavities and the second plurality of downward projecting features in their respective first cavities. So that they can be releasably locked together.

  According to a further embodiment, the container assembly comprises a first container and a second container. The first container includes a first continuous body portion and a first edge. The first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a generally convex shape. The first edge has a first plurality of ribs that generally project upward from the edge such that a first cavity is formed between adjacent ribs as the first plurality of ribs. The first plurality of upwardly projecting ribs creates a first pattern that is generally perpendicular to the direction of the first edge. The first plurality of upward protruding ribs has at least one undercut. The second container includes a second continuous body portion and a second edge. The second edge surrounds the second body portion and projects laterally outward from the body portion. The second edge has a generally concave shape. The second edge has a second plurality of ribs that project generally downwardly from the edge such that a second cavity is formed between adjacent ribs as a second plurality of ribs. The second plurality of downwardly projecting ribs creates a second pattern that is generally perpendicular to the direction of the second edge. The second plurality of downwardly projecting ribs has at least one undercut. The second container is shaped substantially the same as the first container. The first container and the second container have the first plurality of upper projecting ribs fitted in the respective second cavities, and the second plurality of lower projecting ribs are fitted in the respective first cavities. Are adapted to be releasably lockable to each other.

  According to yet another embodiment, the container assembly comprises a first container and a second container. The first container includes a first continuous body portion and a first edge. The first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a first plurality of ribs that generally project upward from the edge such that a first cavity is formed between adjacent ribs as the first plurality of ribs. The first edge has a generally convex shape. The second container includes a second continuous body portion and a second edge. The second edge surrounds the second body portion and projects laterally outward from the body portion. The second edge has a second plurality of ribs that project generally downwardly from the edge such that a second cavity is formed between adjacent ribs as a second plurality of ribs. The second edge has a generally concave shape. The first edge and the second edge have shapes that correspond to each other when they are releasably lockable. The first container and the second container have the first plurality of upper projecting ribs fitted in the respective second cavities, and the second plurality of lower projecting ribs are fitted in the respective first cavities. Are adapted to be releasably lockable to each other.

  According to another method, the container assembly is formed by providing a first container that includes a first continuous body portion and a first edge. The first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a first plurality of ribs that generally project upward from the edge such that a first cavity is formed between adjacent ribs as the first plurality of ribs. The first edge has a generally convex shape. A second container is provided that includes a second continuous body portion and a second edge. The second edge surrounds the second body portion and projects laterally outward from the body portion. The second edge has a second plurality of ribs that project generally downwardly from the edge such that a second cavity is formed between adjacent ribs as a second plurality of ribs. The second edge has a generally concave shape. Turning one of the first container and the second container upside down, the first container and the second container are generally aligned, the first and second edges touch each other, and the first and second edges Corresponding to each other such that both the first and second edges are in either a generally concave orientation or a generally convex orientation. The first plurality of upper projecting ribs are fitted into the respective second cavities, the second plurality of lower projecting ribs are fitted into the respective first cavities, and the first container and the second container are It should be possible to releasably lock each other.

  According to a still further embodiment, the container assembly comprises a first container and a second container. The first container includes a first continuous body portion and a first edge. The first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a first plurality of upward projecting features in which a first cavity is formed between adjacent upper projecting features as the first plurality of upward projecting features. The first edge has a generally convex shape. The second container includes a second continuous body portion and a second edge. The second edge surrounds the second body portion and projects laterally outward from the body portion. The second edge has a second plurality of downward protruding features in which a second cavity is formed between adjacent downward protruding features as a second plurality of downward protruding features. The second edge has a generally concave shape. The first container and the second container fit the first plurality of upward projecting features in their respective second cavities and the second plurality of downward projecting features in their respective first cavities. So that they can be releasably locked together.

  According to another embodiment, the container assembly comprises a first container and a second container. The first container includes a first continuous body portion and a first edge. The first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a generally convex shape. The first edge has a first plurality of ribs that generally project upward from the edge such that a first cavity is formed between adjacent ribs as the first plurality of ribs. The first plurality of upwardly projecting ribs creates a first pattern that is generally perpendicular to the direction of the first edge. The first plurality of upward protruding ribs has at least one undercut. The second container includes a second continuous body portion and a second edge. The second edge surrounds the second body portion and projects laterally outward from the body portion. The second edge has a generally concave shape. The second edge has a second plurality of ribs that project generally downwardly from the edge such that a second cavity is formed between adjacent ribs as a second plurality of ribs. The second plurality of downwardly projecting ribs creates a second pattern that is generally perpendicular to the direction of the second edge. The second plurality of downwardly projecting ribs has at least one undercut. The first container and the second container have the first plurality of upper projecting ribs fitted in the respective second cavities, and the second plurality of lower projecting ribs are fitted in the respective first cavities. Are adapted to be releasably lockable to each other.

BEST MODE FOR CARRYING OUT THE INVENTION

  Referring to FIGS. 1a-e, 2a-e, a first container (eg, flat plate 10) and a second container (eg, flat plate 110) used in one embodiment of the present invention are shown. . The flat plate 10 of FIGS. 1a-e is used with the second flat plate 110 of FIGS. 2a-e, which can be substantially the same as the flat plate 10, to form a releasably lockable container assembly. .

  In addition to the container assembly using a flat plate, it is considered that other container assemblies can be formed. For example, the container assembly may include, but is not limited to, using flat plates, bowls, platters, basins, serving and family size containers, serving and family sized cookware, and combinations thereof. An assembly can be formed. One such combination is a bowl and a flat plate that form a container assembly. Although the present application discusses container assemblies with respect to a flat dish, it will be appreciated by those skilled in the art that other container assemblies such as those described above can be formed.

  The height and shape of the container assembly can be varied from that shown without departing from the scope of the present invention. For example, the container assemblies of FIGS. 3a and 3b described below are generally represented as circular. The container assembly used in this document, and the containers forming the container assembly, may be other shapes such as rectangular, square, hexagonal, octagonal, other polygonal, or elliptical. It is done.

  The container assembly of the present invention is generally used for food, but can also be used for other applications, such as with pharmaceuticals, cosmetics or other articles. As a food container assembly, it can be used to serve, store, cook and / or reheat food.

  Returning to FIGS. 1a-e, the container 10 includes a continuous body portion 12 and a continuous edge 14 surrounding the body portion 12 and projecting laterally outward from the body portion. As shown in FIGS. 1a and 1e, the edge 14 has a generally convex shape. Returning to FIGS. 1 a-e, the body portion 12 includes a bottom 16 and a continuous sidewall 18 that surrounds the bottom 16 and projects upwardly outward from the bottom. It is contemplated that the side wall can protrude only upward from the bottom 16 or can even protrude upward and inward from the bottom 16. Also, the edges are preferably continuous, but it is believed that they may not be continuous.

  With particular reference to FIGS. 1 a-d, the continuous edge 14 includes a plurality of ribs 20 projecting generally upward therefrom. A plurality of ribs 20 are spaced around the entire periphery of the container 10 to assist in forming a releasably lockable container assembly. The orientation of the plurality of ribs 20 creates a pattern that is generally perpendicular to the direction of the edge 14. More specifically, the direction of the plurality of ribs 20 can create a pattern that is perpendicular to the direction of the edge 14. In a radial configuration with a pattern that is perpendicular to the edge direction, each of the plurality of ribs 20 will pass through the entire center of the flat plate if extended inward.

  However, the plurality of ribs 20 can be formed in a different pattern with respect to the edge 14 than shown in FIGS. 1a-d (eg, diagonally). It may be desirable to form the plurality of ribs 20 in a decorative pattern for aesthetic reasons. Such decorative features can help to “hide” or cover the releasable and lockable features in the container 10. As shown in FIG. 1 b, the container 10 forms exactly 48 ribs at the continuous edge 14. It is believed that the number of ribs can be changed from that shown in FIG. For example, the container can have about 3 to about 10 ribs. The container can have about 20 or more than about 40 ribs, and can even have up to about 120 or more ribs. The number of desired ribs formed in the container is often varied depending on factors such as the size or shape of the container assembly, the material type and thickness of the container assembly, and the desired holding force of the container assembly. The desired holding force depends on factors such as the weight of the article placed in the container assembly and its actual usage.

  Turning in particular to FIGS. 1c and 1d, the plurality of ribs 20 are shown in more detail. 1c and 1d represent a first rib 20a and a second rib 20b with a cavity 22 formed therebetween. The first rib 20a of FIG. 1d comprises a generally flat surface 24 that bridges the two sidewall portions 26,28. The first rib 20a is shown as being generally perpendicular to the remaining plane of the continuous edge 14. More specifically, the rib can be perpendicular to the plane of the remainder of the edge. The side walls 26, 28 are shown as being spaced apart from each other and generally perpendicular to the plane of the remainder of the edge 14. However, the side walls 26, 28 do not necessarily have to be generally perpendicular or perpendicular to the rest of the edge 14.

  Similarly, the second rib 20b of FIG. 1d comprises a generally flat surface 30 that bridges the two sidewall portions 32,34. The second rib 20b is also shown as being generally perpendicular to the plane of the remainder of the edge 14. The side walls 32, 34 are shown as being spaced apart from each other and generally perpendicular to the remaining plane of the edge 14.

  To provide an improved locked container assembly, at least one of the rib sidewalls can have an undercut. Optional undercuts formed in such rib sidewalls engage similar undercuts in the corresponding rib sidewalls of the second container when forming the container assembly. For example, in FIG. 1d, optional undercuts 26a, 28a are formed in the respective side walls 26,28. The size and shape of the undercut often varies depending on factors such as the size or shape of the container assembly, the material type and thickness of the container assembly, and the desired holding force of the container assembly. The desired holding force may depend on factors such as the weight of the article placed in the container assembly and its actual usage.

  The number of undercuts formed in the rib sidewalls, if any, the desired leakage resistance, the type of closure mechanism, the suitability of the container assembly, and the type of material used to form the container assembly and Depends on factors such as thickness. For example, if the container assembly is made of a first material having a higher coefficient of friction than the second material, the container made of the first material will have the same holding force as the same container made of the second material. To do so, the side wall undercuts will be less. The number of undercuts used also depends on the suitability of the container assembly, including the holding force.

  It is contemplated that the ribs can have sidewalls with no undercuts or with at least one undercut (eg, first rib 20a with optional undercuts 26a, 28a in FIG. 1d). Also, it is contemplated that some ribs in the same container may have no undercut while other ribs may have one or more undercuts.

  It is believed that the shape and size of the plurality of ribs 20 can be changed from that shown in FIGS. 1c and 1d. The plurality of ribs are preferably shaped and dimensioned to minimize the stack height of the containers used to form the container assembly. Minimizing container stacking height is desirable because it (a) reduces shipping and packaging costs and (b) provides space efficiency in retail and consumer environments. It is also desirable to maximize the holding force of the container assembly. The desired holding force is often a balance between allowing the container assembly to be easily opened and closed by the consumer and at the same time preventing or inhibiting the container assembly from being inadvertently opened.

  It is believed that the upwardly protruding feature can be shaped differently than the ribs shown in FIGS. 1c and 1d. For example, the upwardly projecting features can be a plurality of generally round, generally elliptical, generally square, or generally polygonal features. It is believed that many shapes and sizes can be formed by the upwardly protruding features used for the first container.

  Referring to FIG. 4, the first container 50 includes an edge 52 whose edges form optional sealing features 54 and ribs 56. The edge 52 is shown as generally convex. In FIG. 4, optional sealing feature 54 is located outward from rib 56 with respect to the center of container 50. That is, the optional sealing feature 54 is located further from the center of the container 50 than the ribs 56. Optional sealing feature 54 cooperates with a corresponding optional sealing feature of the second container with a generally concave edge (not shown) in conjunction with a locking rib of the container assembly. , Assists in preventing or inhibiting material from exiting or entering the container assembly. The optional sealing feature is particularly beneficial in preventing or suppressing product leakage that may occur due to tolerances in the manufacturing process. In order to provide an efficient sealing device, the optional height H2 of the sealing feature 54 should be at least one-half of the rib height H1.

  However, the optional sealing feature may be located inwardly of the rib so that the sealing device is formed closer to the center of the container assembly than the releasably lockable rib. .

  Returning to FIGS. 2 a-e, the container 110 includes a continuous body portion 112 and a continuous edge 114 that surrounds the body portion 112 and projects laterally outward from the body portion. As shown in FIG. 2b, the edge 114 has a generally concave shape. The body portion 112 includes a bottom 116 and a continuous sidewall 118 that surrounds the bottom 116 and projects upwardly outward from the bottom. It is contemplated that the side wall portion can only protrude upward from the bottom portion 116 or even protrude upwardly inward from the bottom portion 116. Although it is preferred that the edge is continuous, it is contemplated that it may not be continuous.

  With particular reference to FIGS. 2a-d, the continuous edge 114 includes a plurality of ribs 120 projecting generally downward therefrom. A plurality of ribs 120 are spaced around the entire periphery of the container 110 to assist in forming a releasably lockable container assembly. The orientation of the plurality of ribs 120 creates a pattern that is generally perpendicular to the direction of the edge 114. More specifically, the direction of the plurality of ribs 120 can create a pattern perpendicular to the direction of the edge 114. In a radial configuration with a pattern perpendicular to the edge direction, each of the plurality of ribs 120 would pass through the entire center of the flat plate if extended inward.

  However, the plurality of ribs 120 may be formed in a different pattern with respect to the edge 114 than shown in FIGS. 2a-d (eg, diagonally). It may be desirable to form the plurality of ribs 120 in a decorative pattern for aesthetic reasons. Such decorative features can help to “hide” or cover the releasable and lockable features in the container 110. As shown in FIG. 2 b, the container 110 forms exactly 48 ribs at the continuous edge 114. It is believed that the number of ribs can be changed from that shown in FIG. For example, the container can have about 3 to about 10 ribs. The container can have about 20 or more than about 40 ribs, and can even have up to about 120 or more ribs. The number of desired ribs formed in the container is often varied depending on factors such as the size or shape of the container assembly, the material type and thickness of the container assembly, and the desired holding force of the container assembly. The desired holding force depends on factors such as the weight of the article placed in the container assembly and its actual usage.

  Turning in particular to FIGS. 2c and 2d, a plurality of ribs 120 are shown in more detail. 2c and 2d represent the first rib 120a and the second rib 120b, with a void 122 formed therebetween. The first rib 120a of FIG. 2d comprises a generally flat surface 124 that bridges the two sidewall portions 126,128. The first rib 120a is shown as being generally perpendicular to the remaining plane of the continuous edge 114. More specifically, the rib can be perpendicular to the plane of the remainder of the edge. Sidewalls 126, 128 are shown as being spaced apart from each other and generally perpendicular to the remaining plane of edge 114. However, the side walls 126, 128 do not necessarily have to be generally perpendicular or perpendicular to the rest of the edge 14.

  Similarly, the second rib 120b of FIG. 2d comprises a generally flat surface 130 that bridges the two sidewalls 132,134. The second rib 120b is also shown as being generally perpendicular to the remaining plane of the edge 114. The side walls 132, 134 are shown as being spaced apart from each other and generally perpendicular to the plane of the remainder of the edge 114.

  To provide an improved locked container assembly, at least one of the rib sidewalls can have an undercut. Optional undercuts formed in such rib sidewalls engage similar undercuts in the corresponding rib sidewalls of the second container when forming the container assembly. For example, in FIG. 2d, optional undercuts 126a, 128a are formed in the respective side walls 126,128. The size and shape of the undercut often varies depending on factors such as the size or shape of the container assembly, the material type and thickness of the container assembly, and the desired holding force of the container assembly. The desired holding force may depend on factors such as the weight of the article placed in the container assembly and its actual usage.

  The number of undercuts formed in the rib sidewalls, if any, the desired leakage resistance, the type of closure mechanism, the suitability of the container assembly, and the type of material used to form the container assembly and Depends on factors such as thickness. For example, if the container assembly is made of a first material having a higher coefficient of friction than the second material, the container made of the first material will have the same holding force as the same container made of the second material. To do so, the side wall undercuts will be less. The number of undercuts used also depends on the suitability of the container assembly, including the holding force.

  It is contemplated that the ribs may have sidewalls with no undercuts or with at least one undercut (eg, first rib 120a with optional undercuts 126a, 128a in FIG. 2c). It is contemplated that some ribs in the same container may have no undercut while other ribs may have one or more undercuts.

  It is believed that the shape and size of the plurality of ribs 120 can be changed from that shown in FIGS. 2c and 2d. The plurality of ribs are preferably shaped and dimensioned to minimize the stack height of the containers used to form the container assembly. Minimizing container stacking height is desirable because it (a) reduces shipping and packaging costs and (b) provides space efficiency in retail and consumer environments. It is also desirable to maximize the holding force of the container assembly. The desired holding force is often a balance between allowing the container assembly to be easily opened and closed by the consumer and at the same time preventing or inhibiting the container assembly from being inadvertently opened.

  It is believed that the downwardly projecting feature can be shaped differently than the ribs shown in FIGS. 2c and 2d. For example, the downward protruding feature can be a plurality of round, oval, square, or polygonal features. It is believed that many shapes and sizes can be formed by the downward projecting features used for the second container.

A container assembly 100 according to one embodiment of the invention is depicted in FIGS. 3a and 3b. The container assembly 100 includes a first container 10 and a second container 110.
According to one method, the second container 110 is flipped 180 degrees relative to the first container 10 so that the containers 10, 110 are generally aligned and the edges 14, 114 are adjacent to each other. The position of the container 110 turned upside down with respect to the container 10 is shown in FIG. In order to fit the ribs of the first container into the respective ribs of the second container, the container 110 is rotated slightly so that the ribs are aligned (i.e., the rib and the space are displaced). You may have to. It is desirable that the consumer can assemble the containers together to form the container assembly of the present invention.

  Referring to FIG. 3c, the adjacent ribs 20a, 20b of the container 10 are fitted into the respective ribs of the adjacent ribs 120a, 120b of the container 110, and the cavities 122a, 122b of the container 110 are the respective cavities 22a, 22b. The container assembly 100 can be releasably locked when fitted in the void. In order to fit the ribs of the first container into the respective ribs of the second container, the container 110 is rotated slightly so that the ribs are aligned (i.e., the ribs are displaced from the voids). You may have to. FIG. 3c also represents allowance zones 124a, 124b formed between the respective ribs 20b, 120b.

  The strength of this lockable closure includes the number of protruding ribs, the height of those ribs, the undercuts included, the size of the contact area, the gap required between the cavity and the ribs, the container It depends on many variables such as the material type and thickness used to form the assembly. Optional sealing features can be added as described above to improve the lockability of the container assembly.

  Referring to FIGS. 5a and 5b, the first container (eg, flat plate 210) includes a continuous body portion 212 and a continuous edge that surrounds the body portion 212 and projects laterally outward from the body portion. 214. As shown in FIG. 5a, the edge 214 has a generally convex shape. The body portion 212 includes a bottom 216 and a continuous sidewall 218 that surrounds the bottom 216 and projects upwardly outwardly from the bottom. It is contemplated that the sidewalls can only protrude upward from the bottom 216, or even protrude upwardly inward from the bottom 216. Also, the edges are preferably continuous, but it is believed that they may not be continuous.

  Referring to FIGS. 5a-d, the continuous edge 214 includes a plurality of rib sets 220 projecting generally upward therefrom. A plurality of rib sets 220 are spaced around the entire periphery of the container 210 to assist in forming a releasably lockable container assembly. The orientation of the plurality of rib sets 220 creates a pattern that is generally parallel or generally concentric with the overall direction of the edge 214. That is, if each of the plurality of rib sets 220 is extended outward, it will not approach the entire center of the container 210. The plurality of rib sets 220 are in the opposite direction to the plurality of ribs 20 in FIGS.

  However, the plurality of rib sets 220 can be formed in a different pattern with respect to the edge 214 than shown in FIG. 5b (eg, diagonally). It may be desirable to form the plurality of rib sets 220 in a decorative pattern for aesthetic reasons. Such decorative features can help to “hide” or cover the releasable and lockable features in the container 210.

  The container 210 of FIG. 5 b forms exactly 30 sets of ribs at the continuous edge 214. As discussed in more detail below, each of the plurality of rib sets 220 has a first set of ribs on the raised portion and a second set of ribs on the recessed portion. It is believed that the number of rib sets can be changed from that shown in FIG. 5b. For example, the container can have about 2 to about 30 sets of ribs. The container can have about 40 or more than about 80 rib sets, and can even have up to about 120 or more rib sets. The number of desired ribs formed in the container is often varied depending on factors such as the size or shape of the container assembly, the material type and thickness of the container assembly, and the desired holding force of the container assembly. The desired holding force may depend on factors such as the weight of the article placed in the container assembly and its actual usage.

  Turning to FIGS. 5c and 5d, two adjacent sets of ribs are shown in more detail. The number of ribs in a set is changed in FIGS. 5c and 5d depending on whether the ribs are located in the recessed area or the raised area formed in the edge 214. For example, in FIGS. 5 c and 5 d, the recessed area 240 has a first rib 242 and a second rib 244 with cavities 246, 248 and 250. However, the raised region 260 of FIGS. 5c and 5d has a first rib 262, a second rib 264, and a third rib 266 with cavities 268, 270 between them.

  Each of the ribs in FIG. 5 c protrudes upward from the continuous edge 214. For example, the first rib 242 of FIG. 5d includes a generally flat surface 242a that bridges the two sidewall portions 242b, 242c. The first rib 242 is shown as being generally perpendicular to the remaining plane of the continuous edge 214. Sidewalls 242b, 242c are shown as being spaced apart from each other and generally perpendicular to the remaining plane of edge 214. However, the side walls 242b, 242c do not necessarily have to be generally perpendicular or perpendicular to the remainder of the edge 214.

  To provide an improved lockable container assembly, at least one of the rib sidewalls can have an optional undercut. As described above, undercuts formed in such rib sidewalls engage similar undercuts in the rib sidewalls when forming the container assembly. The size and shape of the undercut often varies depending on factors such as the size or shape of the container assembly, the material type and thickness of the container assembly, and the desired holding force of the container assembly. The desired holding force may depend on factors such as the weight of the article placed in the container assembly and its actual usage.

  As described above, the number of undercuts, if any, formed in the rib sidewalls depends on several factors. It is contemplated that the ribs can have side walls with no undercuts or with at least one undercut. Also, it is contemplated that some ribs in the same container may have no undercut while other ribs may have one or more undercuts.

  The raised and recessed area of FIG. 5d has a plurality of ribs with generally flat areas. For example, the rib 242 includes an upper surface or a generally flat region 242a. Similarly, the rib 264 includes an upper surface or a generally flat region 264a. To improve the sealability of the container assembly, the generally flat areas 264a, 242a contact the similarly sized flat areas formed in the respective ribs of the second container forming the container assembly. can do. As shown in FIG. 5d, a generally flat region 282 is formed between adjacent rib sets (ie, ridges and depressions) to assist in releasably locking the container assembly. It is believed that this area of the rib can be sized and shaped differently than shown in FIGS. 5c and 5d. It is believed that the number of ribs in a rib set can be varied from that shown in FIGS. 5c and 5d (two ribs in the recessed area and three ribs in the raised area).

  It is contemplated that the first container 210 can include a plurality of rib 220 shapes and sizes that are modified from those shown in FIGS. 5b-d. The plurality of ribs are preferably shaped and dimensioned to minimize the stack height of the container. Minimizing container stacking height is desirable because it (a) reduces shipping and packaging costs and (b) provides space efficiency in retail and consumer environments. It is also desirable to maximize the holding force of the container assembly. The desired holding force is often a balance between allowing the container assembly to be easily opened and closed by the consumer and at the same time preventing or inhibiting the container assembly from being inadvertently opened.

  It is contemplated that the first container 210 can include optional sealing features formed on the edge 214. An optional sealing feature may be located outward from the ribs 242, 244, 262 and 266 of FIGS. 5 c and 5 d with respect to the center of the container 210. That is, the optional sealing feature can be located further away from the center of the container 210 than the rib. An optional sealing feature cooperates with a corresponding sealing feature of another container to prevent material from exiting or entering the container assembly, along with the locking ribs of the container assembly. Help control. The optional sealing feature is particularly beneficial in preventing or suppressing product leakage that may occur due to tolerances in the manufacturing process. Such an optional sealing feature can be formed similar to the optional sealing feature 54 of FIG.

  However, the optional sealing feature may be located inwardly of the rib so that the sealing device is formed closer to the center of the container assembly than the releasably lockable rib. .

  Turning to FIGS. 6 a, 6 b, the second container 310 includes a continuous body portion 312 and a continuous edge 314 that surrounds the body portion 312 and projects laterally outward from the body portion. The continuous edge 314 has a generally concave shape. The body portion 312 includes a bottom 316 and a continuous side wall 318 that surrounds the bottom 316 and projects upwardly outwardly from the bottom. It is contemplated that the sidewalls can only protrude upward from the bottom 316 or even protrude upward inward from the bottom 316. Also, although it is preferred that the edge be continuous, it is believed that it may not be continuous. The second container 310 has the exception that the continuous edge 214 of the first container has a generally convex shape, while the continuous edge 314 of the second container has a generally concave shape. , The same as the first container 210.

  A container assembly 400 according to one embodiment of the invention is depicted in FIGS. 7a and 7b. The container assembly 400 comprises a first container 210 of FIGS. 5a-d and a second container 310 of FIGS. 6a, 6b. In one embodiment, the second container 310 is shaped substantially the same as the first container 210. As described above, the container assembly can be formed of first and second containers different from the flat plate. For example, the container assembly can be formed using a bowl and a flat plate.

  The container assembly 400 of FIGS. 7a and 7b can be formed by preparing a first container 210 and a second container 310 according to one method. As described above with respect to the container assembly 100, the second container 310 is flipped 180 degrees relative to the first container 210 so that the containers 210, 310 are generally aligned and the edges 214, 314 are adjacent to each other. The position of the inverted container 310 relative to the container 210 is shown in FIGS. 7a and 7b.

  Referring to FIGS. 8a-e, 9a-c, a first container (eg, flat plate 510) and a second identical container (eg, flat plate 610) used in another embodiment of the present invention are shown. ing. The flat plate 510 of FIGS. 8a-e is used with the second flat plate 610 to form a releasably lockable container assembly. As described above, it is considered that other container assemblies can be formed in addition to the container assembly using a flat plate. It is also contemplated that the second container can be substantially the same as the first container. As mentioned above, the height and shape of the container assembly can be varied from that shown without departing from the scope of the present invention.

  Returning to FIGS. 8a-e, the container 510 includes a continuous body portion 512 and a continuous edge 514 that surrounds the body portion 512 and projects laterally outward from the body portion. As shown in FIGS. 8 a, 8 e, the edge 514 extends generally horizontally from the body portion 512. Returning to FIGS. 8a-e, the body portion 512 includes a bottom 516 and a continuous sidewall 518 that surrounds the bottom 516 and projects upwardly outwardly from the bottom. It is contemplated that the sidewalls can only protrude upward from the bottom 516, or even protrude upward inward from the bottom 516. Also, although it is preferred that the edge be continuous, it is believed that it may not be continuous.

  With particular reference to FIGS. 8a-d, the continuous edge 514 includes a plurality of ribs 520 protruding generally upward therefrom. A plurality of ribs 520 are spaced around the entire periphery of the container 510 to assist in forming a releasably lockable container assembly. The orientation of the plurality of ribs 520 creates a pattern that is generally perpendicular to the direction of the edge 514. More specifically, the orientation of the plurality of ribs 520 can create a pattern that is perpendicular to the direction of the edge 514. In a radial configuration with a pattern perpendicular to the edge direction, each of the plurality of ribs 520 will pass through the entire center of the flat plate if extended inward. As shown in FIG. 8 b, the container 510 forms exactly 48 ribs at the continuous edge 514. It is believed that the number of ribs can be changed from that shown in FIG. 8b. For example, the container can have about 3 to about 10 ribs. The container can have about 20 or more than about 40 ribs, and can even have up to about 120 or more ribs.

  Turning in particular to FIGS. 8c and 8d, a plurality of ribs 520 are shown in more detail. 8c and 8d represent the first rib 520a and the second rib 520b, with a void 522 formed therebetween. The first rib 520a of FIG. 8d comprises a generally flat surface 524 that bridges the two sidewalls 526, 528. The first rib 520a is shown as being generally perpendicular to the remaining plane of the continuous edge 514. Sidewalls 526, 528 are shown as being spaced apart from each other and generally perpendicular to the plane of the remainder of edge 514. However, the side walls 526, 528 do not necessarily have to be generally perpendicular or perpendicular to the remainder of the edge 514. Similarly, the second rib 520b of FIG. 8d comprises a generally flat surface 530 that bridges the two sidewall portions 532, 534.

  To provide an improved locked container assembly, at least one of the rib sidewalls can have an undercut. Optional undercuts formed in such rib sidewalls engage similar undercuts in the rib sidewalls of the second container when forming the container assembly. For example, in FIG. 8d, optional undercuts 526a, 528a are formed in the respective sidewall portions 526, 528, and optional undercuts 532a, 534a are formed in the respective sidewall portions 532, 534. It is considered that the shape and size of the plurality of ribs 520 can be changed from those shown in FIGS. 8c and 8d.

  A container assembly 600 according to another embodiment of the present invention is depicted in FIGS. 9a and 9b. The container assembly 600 includes a first container 510 and a second container 610. The second container 610 includes a continuous body portion 612, a continuous edge 614, a bottom 616 and a rib 620. The main body portion 612, the edge portion 614, the bottom portion 616, and the rib 620 are the same as the main body portion 512, the edge portion 514, the bottom portion 516, and the rib 520 described above.

  According to one method, the second container 610 is flipped 180 degrees relative to the first container 510 so that the containers 510, 610 are generally aligned and the edges 514, 614 are adjacent to each other. The position of the container 610 upside down with respect to this container 510 is shown in FIG. In order to fit the ribs of the first container into the respective ribs of the second container, the container 610 is slightly rotated so that the ribs are aligned (ie, the ribs are displaced from the voids). You may have to. It is desirable that the consumer can assemble the containers together to form the container assembly of the present invention.

  Referring to FIG. 9c, the adjacent ribs 520a, 520b of the container 510 are fitted into the respective ribs of the adjacent ribs 620a, 620b of the container 610, and the cavities 622a, 622b of the container 610 are the respective cavities 522a, 522b. The container assembly 600 can be releasably locked when fitted in the void. In order to fit the ribs of the first container into the respective ribs of the second container, the container 610 is slightly rotated so that the ribs are aligned (ie, the ribs are displaced from the voids). You may have to. FIG. 9c also represents allowance zones 624a, 624b formed between the respective ribs 520b, 620b.

  Referring to FIGS. 1a-e, 10a-e, a first container (eg, flat plate 10) and a second container (eg, flat plate 710) used in another embodiment of the present invention are shown. . The flat plate 10 of FIGS. 1a-e is used with the second flat plate 710 of FIGS. 10a-e, which can be substantially the same as the flat plate 10, to form a releasably lockable container assembly. .

  Referring to FIGS. 10a-e, the container 710 includes a continuous body portion 712 and a continuous edge 714 that surrounds the body portion 712 and projects laterally outward from the body portion. As shown in FIG. 10a, the edge 714 has a generally concave shape. The body portion 712 includes a bottom 716 and a continuous sidewall 718 that surrounds the bottom 716 and projects upwardly outwardly from the bottom. It is contemplated that the side wall portion can protrude only upward from the bottom portion 716, or even protrude upward inward from the bottom portion 716. Also, although it is preferred that the edge be continuous, it is believed that it may not be continuous.

  With particular reference to FIGS. 10a-d, the continuous edge 714 includes a plurality of ribs 720 that project generally downward therefrom. A plurality of ribs 720 are spaced around the entire periphery of the container 710 to assist in forming a releasably lockable container assembly. The orientation of the plurality of ribs 720 creates a pattern that is generally perpendicular to the direction of the edge 714. More specifically, the orientation of the plurality of ribs 720 can create a pattern that is perpendicular to the direction of the edge 714. In a radial configuration with a pattern perpendicular to the edge direction, each of the plurality of ribs 720 would pass through the entire center of the flat plate if extended inward.

  However, the plurality of ribs 720 can be formed in a different pattern with respect to the edge 714 than shown in FIGS. 10a-d (eg, diagonally). It may be desirable to form the plurality of ribs 720 in a decorative pattern for aesthetic reasons. Such decorative features can help to “hide” or cover the releasable and lockable features in the container 710. As shown in FIG. 10 b, the container 710 forms exactly 48 ribs at the continuous edge 714. It is believed that the number of ribs can be changed from that shown in FIG. 10b. For example, the container can have about 3 to about 10 ribs. The container can have about 20 or more than about 40 ribs, and can even have up to about 120 or more ribs.

  Turning specifically to FIGS. 10c and 10d, a plurality of ribs 720 are shown in more detail. Figures 10c and 10d represent a first rib 720a and a second rib 720b with a void 722 formed therebetween. The first rib 720a of FIG. 10d comprises a generally flat surface 724 that bridges the two sidewall portions 726, 728. The first rib 720a is shown as being generally perpendicular to the remaining plane of the continuous edge 714. More specifically, the rib can be perpendicular to the plane of the remainder of the edge. Sidewalls 726, 728 are shown as being spaced apart from each other and generally perpendicular to the remaining plane of edge 714. However, the side walls 726, 728 do not necessarily have to be generally perpendicular or perpendicular to the rest of the edge 714.

  Similarly, the second rib 720b of FIG. 10d comprises a generally flat surface 730 that bridges the two sidewall portions 732, 734. The second rib 720b is also shown as being generally perpendicular to the remaining plane of the edge 714. Sidewalls 732, 734 are shown as being spaced apart from each other and generally perpendicular to the plane of the remainder of edge 714.

  To provide an improved locked container assembly, at least one of the rib sidewalls can have an undercut. Optional undercuts formed in such rib sidewalls engage similar undercuts in corresponding cavities formed between adjacent ribs of the second container when forming the container assembly. . For example, in FIG. 10d, optional undercuts 726a, 728a are formed on the respective side walls 726, 728.

  It is contemplated that the ribs can have sidewalls with no undercuts or with at least one undercut (eg, first rib 720a with optional undercuts 726a, 728a in FIG. 10d). Also, it is contemplated that some ribs in the same container may have no undercut while other ribs may have one or more undercuts. It is believed that the shape and size of the plurality of ribs 720 can be changed from those shown in FIGS. 10c and 10d.

  It is believed that the downward protruding feature can be shaped differently than the ribs shown in FIGS. 10c and 10d. For example, the downward protruding feature can be a plurality of round, oval, square, or polygonal features. It is believed that many shapes and sizes can be formed by the downward projecting features used for the second container.

A container assembly 750 according to one embodiment of the invention is depicted in FIGS. 11a and 11b. The container assembly 750 includes a first container 10 and a second container 710.
According to one method, the second container 710 is turned 180 degrees with respect to the first container 10 so that the containers 10, 710 are generally aligned and the edges 14, 714 are adjacent to each other. The position of the container 710 turned upside down with respect to this container 10 is shown in FIG. In order to fit the ribs into their respective cavities, the container 710 may need to be rotated slightly so that the ribs are offset (ie, the ribs and cavities are aligned). It is desirable that the consumer can assemble the containers together to form the container assembly of the present invention.

  Referring to FIG. 11c, adjacent ribs 720a, 720b of container 710 are fitted into respective second cavities 22a, 22b of container 10, and ribs 20a, 20b of container 10 are fitted into respective cavities 722a, 722b. Thus, the container assembly 750 can be releasably locked. In order to fit the ribs into their respective cavities, the container 710 may need to be rotated slightly so that the ribs are offset (ie, the ribs and cavities are aligned). FIG. 11 c also represents allowance zones 724 a, 724 b formed between the first rib 20 a and a cavity 722 a created between the ribs 720 a, 720 b of the container 710.

  Turning to FIGS. 12a and 12b, the second container 810 includes a continuous body portion 812 and a continuous edge 814 that surrounds the body portion 812 and projects laterally outward from the body portion. The continuous edge 814 has a generally concave shape. The body portion 812 includes a bottom 816 and a continuous sidewall 818 that surrounds the bottom 816 and projects upwardly outwardly from the bottom. It is contemplated that the sidewalls can only protrude upward from the bottom 816, or even protrude upward inward from the bottom 816. Also, although it is preferred that the edge be continuous, it is believed that it may not be continuous. The second container 810 has the exception that the continuous edge 214 of the first container has a generally convex shape, while the continuous edge 814 of the second container has a generally concave shape. , The same as the first container 210.

  A container assembly 850 according to one embodiment of the invention is depicted in FIGS. 13a, 13b. The container assembly 850 includes a first container 210 of FIGS. 5a-d and a second container 810 of FIGS. 13a, 13b. In one embodiment, the second container 810 is shaped substantially the same as the first container 210. As described above, the container assembly can be formed of first and second containers different from the flat plate. For example, the container assembly can be formed using a bowl and a flat plate.

  The container assembly 850 of FIGS. 13a, 13b can be formed by preparing a first container 210 and a second container 810 according to one method. As described above with respect to the container assembly 750, the second container 810 is flipped 180 degrees relative to the first container 210 so that the containers 210, 810 are generally aligned and the edges 214, 814 are adjacent to each other. The position of the container 810 turned upside down with respect to the container 210 is shown in FIGS. 13a and 13b.

  The container assembly of the present invention is generally formed from a polymeric material, but can also be formed from materials such as paper or metal. The polymeric container assembly can be formed from a polyolefin. Polymer food container assemblies are typically formed from expanded polystyrene (OPS), polyethylene terephthalate (PET), polyvinyl chloride (PVC), polypropylene, and combinations thereof. The container assembly can be made from a polymeric material with an inorganic filler such as, for example, talc or a polyolefin with calcium carbonate. Examples of paper that can be used to form the container assembly are paperboard or molded fibers. Paperboard and molded fibers generally have a sufficient coefficient of friction to maintain the first and second containers in a lockable position.

  As previously mentioned, the material used to form the container assembly can assist in releasably locking the container assembly. For example, the material forming the container assembly can have a fairly sticky laminate on one side, and can be releasably locked in a desirable manner, corresponding to a fairly sticky laminate on the opposite side. It can be a container assembly.

  It is contemplated that the containers used to form the container assembly can be made from different materials. One skilled in the art will appreciate that other polymers or combinations of polymers can be used to form the container.

  The container assembly of the present invention is generally disposable but could be reused at a future time. The containers (eg, containers 10, 110) used to form the container assembly are shown as including one compartment. It is contemplated that the container can be formed from multiple compartments. Such containers are desirable to place or prevent items from being mixed by placing items (eg, food) in different compartments. For example, undesired mixing of food products can compromise the taste and consistency of the food products.

  As mentioned above, the container assembly can be used for food. A method of using such a container assembly includes placing food and locking the containers to form a container assembly containing food. The container assembly is then placed in a heating device and heated. Typical heating devices include microwaves and conventional ovens. The container assembly can include a solid food product. The container assembly can be used for storage in a refrigerator and / or freezer.

  The containers used to form the container assembly of the present invention can be formed using conventional thermoforming (eg, by pressure, vacuum or a combination thereof), injection molding or rotational molding. According to one method of thermoforming, polymer resin pellets and additives, and if added, are added into an extruder. Polymer resin pellets and additives, if added, are melted to form a blend. The blend is extruded through a mold to form an extruded sheet. The extruded sheet is thermoformed into the desired container shape used to form the container assembly.

  The thickness of the container used to form the container assembly is generally in the range of about 0.00508 to about 0.381 centimeters (about 0.002 to about 0.15 inches), but generally Is in the range of about 0.015 to about 0.1016 centimeters (about 0.005 to about 0.04 inches). The container assembly can be opaque, various colors or combinations of colors. A container assembly typically has at least one transparent container if it allows the consumer to ascertain the nature of the contained product and its condition without opening the container assembly.

  While specific embodiments and application examples of the invention have been illustrated and described, the invention is not limited to the precise configuration and components disclosed herein, and various modifications, changes, and variations are possible. It should be understood that it may become apparent from the foregoing description without departing from the spirit and scope of the invention as defined in the appended claims.

FIG. 1a is a side view of a first container used in one embodiment of the present invention. FIG. 1b is a plan view of the first container of FIG. 1a. FIG. 1c is an enlarged plan perspective view of a portion of the first container of FIG. 1a. FIG. 1d is an enlarged view of the area labeled as FIG. 1d in FIG. 1c. FIG. 1e is a contour view of the periphery of the first container of FIG. 1a. FIG. 2a is a side view of a second container used in one embodiment of the present invention. FIG. 2b is a plan view of the second container of FIG. 2a. FIG. 2c is an enlarged plan perspective view of a portion of the second container of FIG. 2a. FIG. 2d is an enlarged bottom perspective view of the area labeled 2d in FIG. 2c. FIG. 2e is a contour view of the periphery of the second container of FIG. 2a. FIG. 3a is a side view of a container assembly using the first container of FIG. 1a and the second container of FIG. 2a. FIG. 3b is a profile view of the perimeter of the first and second containers used to form the container assembly of FIG. 3a. FIG. 3c is an enlarged cross-sectional view illustrating the engagement between the ribs of the first and second containers. It is an outline figure of the circumference of the 1st container by another embodiment. FIG. 5a is a side view of a first container used in another embodiment of the present invention. FIG. 5b is a plan view of the first container of FIG. 5a. FIG. 5c is a plan view of the generally circular region 5c of FIG. 5b, representing two adjacent protruding ribs. FIG. 5d is a perspective view of the generally circular region 5c of FIG. 5b, representing two adjacent protruding ribs. FIG. 6a is a side view of a second container used in another embodiment of the present invention. 6b is a plan view of the second container of FIG. 6a. FIG. 7a is a side view of a container assembly using the first container of FIG. 5a and the second container of FIG. 6a. FIG. 7b is a profile view of the periphery of the first and second containers used to form the container assembly of FIG. 7a. FIG. 8a is a side view of a first container used in a further embodiment of the present invention. FIG. 8b is a plan view of the first container of FIG. 8a. FIG. 8c is an enlarged plan perspective view of a portion of the first container of FIG. 8a. FIG. 8d is an enlarged view of the area labeled as FIG. 8d in FIG. 8c. FIG. 8e is a contour view of the periphery of the first container of FIG. 8a. FIG. 9a is a side view of a container assembly using the first container of FIG. 8a and the same container as FIG. 8a. FIG. 9b is a profile view of the perimeter of the first and second containers used to form the container assembly of FIG. 9a. FIG. 9c is an enlarged cross-sectional view illustrating the engagement between the ribs of the first and second containers. FIG. 10a is a side view of a second container used in one embodiment of the present invention. FIG. 10b is a plan view of the second container of FIG. 10a. FIG. 10c is an enlarged plan perspective view of a portion of the second container of FIG. 10a. FIG. 10d is an enlarged view of the area labeled as FIG. 10d in FIG. 10c. FIG. 10e is a contour view of the periphery of the second container of FIG. 10a. FIG. 11a is a side view of a container assembly using the first container of FIG. 1a and the second container of FIG. 10a. FIG. 11b is a profile view of the perimeter of the first and second containers used to form the container assembly of FIG. 11a. FIG. 11c is an enlarged cross-sectional view illustrating the engagement between the ribs of the first and second containers. FIG. 12a is a side view of a second container used in another embodiment of the present invention. 12b is a plan view of the second container of FIG. 12a. FIG. 13a is a side view of a container assembly using the first container of FIG. 5a and the second container of FIG. 12a. FIG. 13b is a contour view of the perimeter of the first and second containers used to form the container assembly of FIG. 13a.

Explanation of symbols

10 ······· First container 12 ················································································ ... Rib 20a ... 1st rib 20b ... 2nd rib 22 ... ... Empty space of the first container 22a ... Empty space 22b ...・ ・ Vacant space 24 ・ ・ ・ ・ ・ ・ Surface 26 ・ ・ ・ ・ ・ ・ Sidewall 26a ・ ・ ・ ・ ・ Undercut 28 ・ ・ ・ ・ ・ ・ Sidewall 28a ・ ・ ・ ・ ・ Undercut 30 ・ ・ ・・ ・ ・ Surface 32 ・ ・ ・ ・ ・ ・ Side wall 34 ・ ・ ・ ・ ・ ・ Side wall 54 ・ ・ ・ ・ ・ ・ Sealing feature 100 ・ ・ ・ ・ ・ Container assembly 110 ・ ・ ・ Second 112... Body portion 114... Edge portion 116... Bottom portion 118 .. side wall portion 120... Rib 120 a. Rib 120b ····· Second rib 122 ··· Empty space of second container 122a ················································ Allowance area 124b...

Claims (109)

A container assembly,
A first container including a first continuous body portion and a first edge, wherein the first edge surrounds the first body portion and projects laterally outward from the body portion. The first plurality of ribs projecting generally upwardly from the first plurality of ribs such that a first cavity is formed between adjacent ribs. The first container having a generally convex shape; and
A second container including a second continuous body portion and a second edge, wherein the second edge surrounds the second body portion and projects laterally outward from the body portion; The second plurality of ribs projecting generally downwardly from the plurality of second ribs such that a second cavity is formed between adjacent ribs. And the second edge comprises a second container having a generally concave shape,
The first edge and the second edge have shapes corresponding to each other when they can be releasably locked, and the first container and the second container are Two lower projecting ribs are fitted into the respective ribs of the first plurality of upper projecting ribs, and the first cavity is fitted into each of the second cavity, thereby releasing each other. Said container assembly adapted to be lockable.   The container assembly according to claim 1, wherein the first and second containers are bowls.   2. The container assembly according to claim 1, wherein the first and second containers are flat dishes.   2. The container assembly according to claim 1, wherein the first container is a bowl and the second container is a flat plate.   The container assembly according to claim 1, wherein the first and second containers are made from a polymeric material.   6. The container assembly according to claim 5, wherein the first and second containers are made from a polymeric material with an inorganic filler.   2. The container assembly according to claim 1, wherein the first plurality of upward projecting ribs surround the first and second side wall portions and the first and second side wall portions to bridge the side wall portions. And at least one of the first and second side wall portions has a first undercut, and the second plurality of downward projecting ribs are formed with the third and fourth side wall portions. The container set comprising: a surface surrounding the third and fourth sidewall portions and bridging the sidewall portions; and at least one of the third and fourth sidewall portions having a second undercut. Solid.   2. The container assembly according to claim 1, wherein the first plurality of upwardly projecting ribs creates a first pattern that is generally perpendicular to the direction of the first edge, and the second plurality of lower ribs. The container assembly, wherein the projecting rib creates a second pattern that is generally perpendicular to the direction of the second edge.   2. The container assembly according to claim 1, wherein each of the first plurality of upper protruding ribs is generally concentric with the center of the first container, and each of the second plurality of lower protruding ribs is the same. Said container assembly generally concentric with the center of the second container.   The container assembly according to claim 1, wherein each of the first plurality of upper protruding ribs and the second plurality of lower protruding ribs includes at least about 20 ribs.   11. The container assembly according to claim 10, wherein each of the first plurality of upper protruding ribs and the second plurality of lower protruding ribs includes at least about 40 ribs.   The container assembly according to claim 1, wherein the first edge and the second edge are adapted to form a sealing device. A method of forming a container assembly, the method comprising:
A first container including a first continuous body portion and a first edge, wherein the first edge surrounds the first body portion and projects laterally outward from the body portion. The first plurality of ribs projecting generally upwardly from the first plurality of ribs such that a first cavity is formed between adjacent ribs. Providing the first container, wherein the first edge has a generally convex shape;
A second container including a second continuous body portion and a second edge, wherein the second edge surrounds the second body portion and projects laterally outward from the body portion; The second plurality of ribs projecting generally downwardly from the plurality of second ribs such that a second cavity is formed between adjacent ribs. Providing the second container, wherein the second edge has a generally concave shape;
In an act of flipping one of the first container and the second container, the first container and the second container are generally aligned, the first and second edges touch each other, and the first container The act of causing the first and second edges to correspond to each other such that both the first and second edges are in either a generally concave orientation or a generally convex orientation; and
The second plurality of downward projecting ribs are fitted into the ribs of the first plurality of upper projecting ribs, the first space is fitted into the respective space of the second space, The act of causing the first container and the second container to be releasably lockable with respect to each other.   14. The method according to claim 13, wherein the second plurality of downward projecting ribs are fitted into respective ribs of the first plurality of upper projecting ribs, and the first space is replaced with the second space. The method further comprises the act of placing food in at least one of the first container and the second container prior to the act of fitting in the empty space. A container assembly,
A first container including a first continuous body portion and a first edge, wherein the first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has the first plurality of upward projecting features, wherein the first plurality of upward projecting features have a first cavity formed between adjacent upper projecting features. The first container has a generally convex shape and the first container;
A second container including a second continuous body portion and a second edge, wherein the second edge surrounds the second body portion and projects laterally outward from the body portion; The second edge has the second plurality of downward projecting features in which a second plurality of downward projecting features is formed and a second cavity is formed between adjacent lower projecting features. The second edge comprises a second container having a generally concave shape;
The first container and the second container are configured to fit the second plurality of downward projecting features into respective features of the first plurality of upward projecting features, and to define the first space in the first container. Said container assembly adapted to be releasably lockable by being fitted into respective cavities of the second cavities.   16. The container assembly according to claim 15, wherein the first and second containers are made from a polymeric material. A container assembly,
A first container including a first continuous body portion and a first edge, wherein the first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a generally convex shape, and the first edge is a first plurality of ribs such that a first cavity is formed between adjacent ribs. Having a first plurality of ribs protruding generally upward from an edge, the first plurality of upward protruding ribs creating a first pattern that is generally perpendicular to the direction of the first edge; The first plurality of upwardly projecting ribs having at least one undercut;
A second container including a second continuous body portion and a second edge, wherein the second edge surrounds the second body portion and projects laterally outward from the body portion; The second edge has a generally concave shape, the second edge being a second plurality of ribs such that a second cavity is formed between adjacent ribs. Said second plurality of downwardly projecting ribs projecting generally downwardly from a portion, said second plurality of downwardly projecting ribs creating a second pattern that is generally perpendicular to the direction of said second edge, A second plurality of downwardly projecting ribs comprising the second container having at least one undercut;
The first container and the second container are configured such that the second plurality of downward projecting ribs are fitted into the ribs of the first plurality of upper projecting ribs, and the first space is formed in the second container. Said container assembly adapted to be releasably lockable with each other by being fitted into each of the cavities. A container assembly,
A first container including a first continuous body portion and a first edge, wherein the first edge surrounds the first body portion and projects laterally outward from the body portion. The first plurality of ribs projecting generally upwardly from the first plurality of ribs such that a first cavity is formed between adjacent ribs. And wherein the first plurality of upwardly projecting ribs creates a first pattern that is generally perpendicular to the direction of the first edge;
A second container including a second continuous body portion and a second edge, wherein the second edge surrounds the second body portion and projects laterally outward from the body portion; The second plurality of ribs projecting generally downwardly from the plurality of second ribs such that a second cavity is formed between adjacent ribs. And the second plurality of downwardly projecting ribs creates a second pattern that is generally perpendicular to the direction of the second edge, the second container being shaped generally the same as the first container. And the second container,
The first container and the second container are configured such that the second plurality of downward projecting ribs are fitted into the ribs of the first plurality of upper projecting ribs, and the first space is disposed in the second Said container assembly adapted to be releasably lockable with each other by being fitted into each of the cavities.   19. A container assembly according to claim 18, wherein the first and second containers are bowls.   19. A container assembly according to claim 18, wherein the first and second containers are flat dishes.   19. A container assembly according to claim 18, wherein the first container is a bowl and the second container is a flat plate.   19. A container assembly according to claim 18, wherein the first and second containers are made from a polymeric material.   23. The container assembly according to claim 22, wherein the first and second containers are made from a polymeric material with an inorganic filler.   19. A container assembly according to claim 18, wherein at least one of the first and second containers is paper or metal.   19. A container assembly according to claim 18, wherein the first container is shaped substantially the same as the second container.   19. The container assembly according to claim 18, wherein the first plurality of upper protruding ribs and the second plurality of lower protruding ribs are generally square.   27. The container assembly according to claim 26, wherein the first plurality of upper protruding ribs and the second plurality of lower protruding ribs are square.   19. The container assembly according to claim 18, wherein the first plurality of upward projecting ribs surround the first and second side wall portions and the first and second side wall portions to bridge the side wall portions. And at least one of the first and second side wall portions has a first undercut, and the second plurality of downward projecting ribs are formed with the third and fourth side wall portions. The container set comprising: a surface surrounding the third and fourth sidewall portions and bridging the sidewall portions; and at least one of the third and fourth sidewall portions having a second undercut. Solid.   19. The container assembly according to claim 18, wherein the first plurality of upper protruding ribs and the second plurality of lower protruding ribs are generally polygonal.   19. The container assembly according to claim 18, wherein each of the first plurality of upper protruding ribs and the second plurality of lower protruding ribs includes at least about 20 ribs.   32. The container assembly according to claim 30, wherein each of the first plurality of upper protruding ribs and the second plurality of lower protruding ribs includes at least about 40 ribs.   19. A container assembly according to claim 18, wherein the first edge and the second edge are adapted to form a sealing device. A method of forming a container assembly, the method comprising:
A first container including a first continuous body portion and a first edge, wherein the first edge surrounds the first body portion and projects laterally outward from the body portion. The first plurality of ribs projecting generally upwardly from the first plurality of ribs such that a first cavity is formed between adjacent ribs. Providing the first container with the first plurality of upwardly projecting ribs creating a first pattern that is generally perpendicular to the direction of the first edge;
A second container including a second continuous body portion and a second edge, wherein the second edge surrounds the second body portion and projects laterally outward from the body portion; The second plurality of ribs projecting generally downwardly from the plurality of second ribs such that a second cavity is formed between adjacent ribs. And the second plurality of downwardly projecting ribs creates a second pattern that is generally perpendicular to the direction of the second edge, the second container being shaped generally the same as the first container. Preparing the second container;
Turning one of the first container and the second container over so that the first container and the second container are generally aligned and the first and second edges are in contact with each other; ,
The second plurality of downward projecting ribs are fitted into the respective ribs of the first plurality of upper projecting ribs, the first space is fitted into the respective space of the second space, The act of causing the first container and the second container to be releasably lockable with respect to each other.   34. The method of claim 33, wherein the second plurality of downwardly projecting ribs are fitted into respective ribs of the first plurality of upwardly projecting ribs, and the first space is each of the second space. The method further comprises the act of placing food in at least one of the first container and the second container prior to the act of fitting in the empty space. A container assembly,
A first container including a first continuous body portion and a first edge, wherein the first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has the first plurality of upward projecting features, wherein the first plurality of upward projecting features have a first cavity formed between adjacent upper projecting features. The first plurality of upward projecting features creating a first pattern that is generally perpendicular to the direction of the first edge; and
A second container including a second continuous body portion and a second edge, wherein the second edge surrounds the second body portion and projects laterally outward from the body portion; The second edge has the second plurality of downward projecting features in which a second plurality of downward projecting features is formed and a second cavity is formed between adjacent lower projecting features. The second plurality of downwardly projecting features create a second pattern that is generally perpendicular to the direction of the second edge, the second container being shaped generally the same as the first container. And the second container,
The first container and the second container are configured to fit the second plurality of downward projecting features into respective features of the first plurality of upward projecting features, and to define the first space in the first container. Said container assembly adapted to be releasably lockable by being fitted into respective cavities of the second cavities.   36. The container assembly according to claim 35, wherein the first and second containers are made from a polymeric material. A container assembly,
A first container including a first continuous body portion and a first edge, wherein the first edge surrounds the first body portion and projects laterally outward from the body portion. The first plurality of ribs projecting generally upwardly from the first plurality of ribs such that a first cavity is formed between adjacent ribs. The first container having a generally convex shape; and
A second container including a second continuous body portion and a second edge, wherein the second edge surrounds the second body portion and projects laterally outward from the body portion; The second plurality of ribs projecting generally downwardly from the plurality of second ribs such that a second cavity is formed between adjacent ribs. Said second edge has a generally concave shape, said second container comprising said second container shaped substantially the same as said first container;
The first edge and the second edge have shapes corresponding to each other when they can be releasably locked, and the first container and the second container are A plurality of upper projecting ribs can be fitted into the respective second cavities, and the second plurality of lower projecting ribs can be fitted into the respective first cavities so that they can be releasably locked with each other. Said container assembly being adapted to:   38. The container assembly according to claim 37, wherein the first and second containers are bowls.   38. The container assembly according to claim 37, wherein the first and second containers are flat dishes.   38. The container assembly according to claim 37, wherein the first container is a bowl and the second container is a flat plate.   38. A container assembly according to claim 37, wherein the first and second containers are platters.   38. A container assembly according to claim 37, wherein the first and second containers are made from a polymeric material.   43. The container assembly according to claim 42, wherein the first and second containers are made from a polymeric material with an inorganic filler.   43. The container assembly according to claim 42, wherein the first and second containers comprise high impact polystyrene.   38. The container assembly according to claim 37, wherein at least one of the first and second containers is paper or metal.   38. A container assembly according to claim 37, wherein the first plurality of upper protruding ribs and the second plurality of lower protruding ribs are generally perpendicular to the plane of the remainder of the respective edge. .   47. The container assembly according to claim 46, wherein the first plurality of upper projecting ribs and the second plurality of lower projecting ribs are perpendicular to the plane of the remainder of the respective edge.   38. The container assembly according to claim 37, wherein the first plurality of upwardly projecting ribs are spaced apart from each other by first and second side walls that are generally perpendicular to the plane of the remainder of the first edge. Said first and second sidewall portions, and a generally flat first surface surrounding said first and second sidewall portions and bridging said sidewall portions, and said second plurality of sidewalls Downwardly projecting ribs are spaced apart third and fourth side walls, each of which is generally perpendicular to the plane of the remainder of the second edge, and the third and fourth side walls. And a generally flat second surface surrounding the four sidewall portions and bridging the sidewall portions.   38. The container assembly according to claim 37, wherein the first plurality of upward projecting ribs surround the first and second side wall portions and the first and second side wall portions to bridge the side wall portions. And at least one of the first and second side wall portions has a first undercut, and the second plurality of downward projecting ribs have third and fourth side wall portions, A container assembly that surrounds the third and fourth sidewall portions and bridges the sidewall portions, wherein at least one of the third and fourth sidewall portions has a second undercut.   38. The container assembly according to claim 37, wherein the first plurality of upwardly projecting ribs creates a first pattern that is generally perpendicular to the direction of the first edge and the second plurality of lower projections. The container assembly, wherein the projecting rib creates a second pattern that is generally perpendicular to the direction of the second edge.   51. The container assembly according to claim 50, wherein the first plurality of upwardly projecting ribs creates a first pattern that is perpendicular to the direction of the first edge and the second plurality of downwardly projecting ribs. The container assembly, wherein the ribs create a second pattern that is perpendicular to the direction of the second edge.   38. The container assembly according to claim 37, wherein each of the first plurality of upper protruding ribs is generally concentric with the center of the first container, and each of the second plurality of lower protruding ribs is the Said container assembly generally concentric with the center of the second container.   38. The container assembly of claim 37, wherein each of the first plurality of upper protruding ribs and the second plurality of lower protruding ribs includes at least about 20 ribs.   54. The container assembly according to claim 53, wherein each of the first plurality of upper protruding ribs and the second plurality of lower protruding ribs includes at least about 40 ribs.   38. A container assembly according to claim 37, wherein the first edge and the second edge are adapted to form a sealing device.   56. The container assembly according to claim 55, wherein the sealing device is located outward from the first plurality of upper protruding ribs and the second plurality of lower protruding ribs.   56. The container assembly according to claim 55, wherein the sealing device is located inward of the first plurality of upper protruding ribs and the second plurality of lower protruding ribs.   38. The container assembly of claim 37, wherein each of the first plurality of upper protruding ribs and the second plurality of lower protruding ribs includes at least about two sets of ribs.   38. The container assembly according to claim 37, wherein the first and second containers are thermoformed. A method of forming a container assembly, the method comprising:
A first container including a first continuous body portion and a first edge, wherein the first edge surrounds the first body portion and projects laterally outward from the body portion. The first plurality of ribs projecting generally upwardly from the first plurality of ribs such that a first cavity is formed between adjacent ribs. Providing the first container, wherein the first edge has a generally convex shape;
A second container including a second continuous body portion and a second edge, wherein the second edge surrounds the second body portion and projects laterally outward from the body portion; The second plurality of ribs projecting generally downwardly from the plurality of second ribs such that a second cavity is formed between adjacent ribs. Providing the second container, wherein the second edge has a generally concave shape, and the second container is shaped substantially the same as the first container;
In an act of flipping one of the first container and the second container, the first container and the second container are generally aligned, the first and second edges touch each other, and the first container The act of causing the first and second edges to correspond to each other such that both the first and second edges are in either a generally concave orientation or a generally convex orientation; and
The first plurality of upper projecting ribs are fitted into the respective second cavities, and the second plurality of lower projecting ribs are fitted into the respective first cavities, so that the first container and the first And the act of allowing the two containers to be releasably lockable with respect to each other.   61. The method according to claim 60, wherein the first plurality of upper projecting ribs are fitted into the respective second cavities, and the second plurality of lower projecting ribs are fitted into the respective first cavities. The method further comprises the act of placing food in at least one of the first container and the second container prior to.   61. The method of claim 60, wherein the first and second containers are bowls.   61. The method of claim 60, wherein the first and second containers are flat dishes.   61. The method of claim 60, wherein the first and second containers are made from a polymeric material.   65. The method of claim 64, wherein the first and second containers comprise high impact polystyrene.   61. The method of claim 60, wherein the first plurality of upper protruding ribs and the second plurality of lower protruding ribs are generally perpendicular to the plane of the remainder of the respective edge.   61. The method of claim 60, wherein the first plurality of upwardly projecting ribs includes first and second sidewall portions and a surface surrounding the first and second sidewall portions and bridging the sidewall portions. And at least one of the first and second side wall portions has a first undercut, and the second plurality of downward projecting ribs include the third and fourth side wall portions, and the third side wall portion. And a surface surrounding the fourth sidewall portion and bridging the sidewall portions, wherein at least one of the third and fourth sidewall portions has a second undercut.   61. The method of claim 60, wherein the first plurality of upward projecting ribs creates a first pattern that is generally perpendicular to the direction of the first edge, and the second plurality of downward projecting ribs. Creating a second pattern that is generally perpendicular to the direction of the second edge.   61. The method of claim 60, wherein each of the first plurality of upper protruding ribs is generally concentric with the center of the first container, and each of the second plurality of lower protruding ribs is the second. The method of claim 1, wherein the method is generally concentric with the center of the container.   61. The method of claim 60, wherein the first edge and the second edge are adapted to form a sealing device.   71. The method of claim 70, wherein the sealing device is located outward from the first plurality of upper protruding ribs and the second plurality of lower protruding ribs. A container assembly,
A first container including a first continuous body portion and a first edge, wherein the first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has the first plurality of upward projecting features, wherein the first plurality of upward projecting features have a first cavity formed between adjacent upper projecting features. The first container has a generally convex shape and the first container;
A second container including a second continuous body portion and a second edge, wherein the second edge surrounds the second body portion and projects laterally outward from the body portion; The second edge has the second plurality of downward projecting features in which a second plurality of downward projecting features is formed and a second cavity is formed between adjacent lower projecting features. The second edge has a generally concave shape, and the second container comprises the second container shaped substantially the same as the first container;
The first container and the second container have the first plurality of upwardly projecting features fitted in respective second cavities, and the second plurality of downwardly projecting features are each of the first containers. Said container assembly adapted to be releasably lockable by being fitted into a cavity.   73. The container assembly according to claim 72, wherein the first and second containers are made from a polymeric material.   73. A container assembly according to claim 72, wherein the first edge and the second edge are adapted to form a sealing device.   75. The container assembly according to claim 74, wherein the sealing device is located outward from the first plurality of upper protruding ribs and the second plurality of upper protruding ribs.   75. The container assembly according to claim 74, wherein the sealing device is located inward of the first plurality of upper protruding ribs and the second plurality of upper protruding ribs. A container assembly,
A first container including a first continuous body portion and a first edge, wherein the first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a generally convex shape, and the first edge is a first plurality of ribs such that a first cavity is formed between adjacent ribs. Having a first plurality of ribs protruding generally upward from an edge, the first plurality of upward protruding ribs creating a first pattern that is generally perpendicular to the direction of the first edge; The first plurality of upwardly projecting ribs having at least one undercut;
A second container including a second continuous body portion and a second edge, wherein the second edge surrounds the second body portion and projects laterally outward from the body portion; The second edge has a generally concave shape, the second edge being a second plurality of ribs such that a second cavity is formed between adjacent ribs. Said second plurality of downwardly projecting ribs projecting generally downwardly from a portion, said second plurality of downwardly projecting ribs creating a second pattern that is generally perpendicular to the direction of said second edge, A second plurality of downwardly projecting ribs having at least one undercut, wherein the second container comprises the second container shaped substantially the same as the first container;
In the first container and the second container, the first plurality of upper projecting ribs are fitted in the respective second cavities, and the second plurality of lower projecting ribs are installed in the respective first cavities. The container assembly is adapted to be releasably lockable by being fitted to each other.   78. A container assembly according to claim 77, wherein the first and second containers are bowls.   78. A container assembly according to claim 77, wherein the first and second containers are flat dishes.   78. The container assembly according to claim 77, wherein the first and second containers are made from a polymeric material.   81. The container assembly according to claim 80, wherein the first and second containers comprise high impact polystyrene.   78. The container assembly according to claim 77, wherein the first plurality of upwardly projecting ribs creates a first pattern that is perpendicular to the direction of the first edge and the second plurality of downwardly projecting ribs. The container assembly, wherein the ribs create a second pattern that is perpendicular to the direction of the second edge.   78. A container assembly according to claim 77, wherein the first edge and the second edge are adapted to form a sealing device.   78. The container assembly according to claim 77, wherein each of the first plurality of downward protruding ribs includes two undercuts, and each of the second plurality of upward protruding ribs includes two undercuts. The container assembly. A container assembly,
A first container including a first continuous body portion and a first edge, wherein the first edge surrounds the first body portion and projects laterally outward from the body portion. The first plurality of ribs projecting generally upwardly from the first plurality of ribs such that a first cavity is formed between adjacent ribs. The first container having a generally convex shape; and
A second container including a second continuous body portion and a second edge, wherein the second edge surrounds the second body portion and projects laterally outward from the body portion; The second plurality of ribs projecting generally downwardly from the plurality of second ribs such that a second cavity is formed between adjacent ribs. And the second edge comprises a second container having a generally concave shape,
The first edge and the second edge have shapes corresponding to each other when they can be releasably locked, and the first container and the second container are A plurality of upper projecting ribs can be fitted into the respective second cavities, and the second plurality of lower projecting ribs can be fitted into the respective first cavities so that they can be releasably locked with each other. Said container assembly being adapted to:   86. The container assembly according to claim 85, wherein the first and second containers are made from a polymeric material.   87. A container assembly according to claim 86, wherein the first and second containers are made from a polymeric material with an inorganic filler.   90. A container assembly according to claim 86, wherein the first and second containers comprise high impact polystyrene.   86. The container assembly according to claim 85, wherein the first plurality of upper protruding ribs and the second plurality of lower protruding ribs are generally perpendicular to the plane of the remainder of each of the edges. .   86. The container assembly according to claim 85, wherein the first plurality of upward projecting ribs surround the first and second side wall portions and the first and second side wall portions to bridge the side wall portions. And at least one of the first and second side wall portions has a first undercut, and the second plurality of downward projecting ribs are formed with the third and fourth side wall portions. The container set comprising: a surface surrounding the third and fourth sidewall portions and bridging the sidewall portions; and at least one of the third and fourth sidewall portions having a second undercut. Solid.   86. The container assembly according to claim 85, wherein the first plurality of upwardly projecting ribs creates a first pattern that is generally perpendicular to the direction of the first edge, and the second plurality of lower projections. The container assembly, wherein the projecting rib creates a second pattern that is generally perpendicular to the direction of the second edge.   92. The container assembly according to claim 91, wherein the first plurality of upwardly projecting ribs creates a first pattern that is perpendicular to the direction of the first edge and the second plurality of downwardly projecting ribs. The container assembly, wherein the ribs create a second pattern that is perpendicular to the direction of the second edge.   86. The container assembly according to claim 85, wherein each of the first plurality of upper protruding ribs and the second plurality of lower protruding ribs includes at least about 20 ribs.   94. The container assembly according to claim 93, wherein each of the first plurality of upper protruding ribs and the second plurality of lower protruding ribs includes at least about 40 ribs. A method of forming a container assembly, the method comprising:
A first container including a first continuous body portion and a first edge, wherein the first edge surrounds the first body portion and projects laterally outward from the body portion. The first plurality of ribs projecting generally upwardly from the first plurality of ribs such that a first cavity is formed between adjacent ribs. Providing the first container, wherein the first edge has a generally convex shape;
A second container including a second continuous body portion and a second edge, wherein the second edge surrounds the second body portion and projects laterally outward from the body portion; The second plurality of ribs projecting generally downwardly from the plurality of second ribs such that a second cavity is formed between adjacent ribs. Providing the second container, wherein the second edge has a generally concave shape;
In an act of flipping one of the first container and the second container, the first container and the second container are generally aligned, the first and second edges touch each other, and the first container The act of causing the first and second edges to correspond to each other such that both the first and second edges are in either a generally concave orientation or a generally convex orientation; and
The first plurality of upper projecting ribs are fitted into the respective second cavities, and the second plurality of lower projecting ribs are fitted into the respective first cavities, so that the first container and the first And the act of allowing the two containers to be releasably lockable with respect to each other.   96. The method of claim 95, wherein the first plurality of upper projecting ribs are fitted into respective second cavities, and the second plurality of lower projecting ribs are fitted into the respective first cavities. The method further comprises the act of placing food in at least one of the first container and the second container prior to.   96. The method of claim 95, wherein the first and second containers are made from a polymeric material.   96. The method of claim 95, wherein the first plurality of upwardly projecting ribs includes first and second sidewall portions and a surface surrounding the first and second sidewall portions and bridging the sidewall portions. And at least one of the first and second side wall portions has a first undercut, and the second plurality of downward projecting ribs include third and fourth side wall portions, And a surface surrounding the third and fourth sidewall portions and bridging the sidewall portions, wherein at least one of the third and fourth sidewall portions has a second undercut.   96. The method of claim 95, wherein the first plurality of upward protruding ribs creates a first pattern that is generally perpendicular to the direction of the first edge and the second plurality of downward protruding ribs. Creating a second pattern that is generally perpendicular to the direction of the second edge.   96. The method of claim 95, wherein the first edge and the second edge are adapted to form a sealing device. A container assembly,
A first container including a first continuous body portion and a first edge, wherein the first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has the first plurality of upward projecting features, wherein the first plurality of upward projecting features have a first cavity formed between adjacent upper projecting features. The first container has a generally convex shape and the first container;
A second container including a second continuous body portion and a second edge, wherein the second edge surrounds the second body portion and projects laterally outward from the body portion; The second edge has the second plurality of downward projecting features in which a second plurality of downward projecting features is formed and a second cavity is formed between adjacent lower projecting features. The second edge comprises a second container having a generally concave shape;
The first container and the second container have the first plurality of upwardly projecting features fitted in respective second cavities, and the second plurality of downwardly projecting features are each of the first containers. Said container assembly adapted to be releasably lockable by being fitted into a cavity.   102. The container assembly according to claim 101, wherein the first and second containers are made from a polymeric material.   102. The container assembly according to claim 101, wherein the first edge and the second edge are adapted to form a sealing device.   103. The container assembly according to claim 102, wherein the sealing device is located outward from the first plurality of upper protruding ribs and the second plurality of upper protruding ribs.   103. The container assembly according to claim 102, wherein the sealing device is located inward of the first plurality of upper protruding ribs and the second plurality of upper protruding ribs. A container assembly,
A first container including a first continuous body portion and a first edge, wherein the first edge surrounds the first body portion and projects laterally outward from the body portion. The first edge has a generally convex shape, and the first edge is a first plurality of ribs such that a first cavity is formed between adjacent ribs. Having a first plurality of ribs protruding generally upward from an edge, the first plurality of upward protruding ribs creating a first pattern that is generally perpendicular to the direction of the first edge; The first plurality of upwardly projecting ribs having at least one undercut;
A second container including a second continuous body portion and a second edge, wherein the second edge surrounds the second body portion and projects laterally outward from the body portion; The second edge has a generally concave shape, the second edge being a second plurality of ribs such that a second cavity is formed between adjacent ribs. Said second plurality of downwardly projecting ribs projecting generally downwardly from a portion, said second plurality of downwardly projecting ribs creating a second pattern that is generally perpendicular to the direction of said second edge, A second plurality of downwardly projecting ribs having at least one undercut, wherein the first container comprises the second container shaped substantially the same as the second container;
In the first container and the second container, the first plurality of upper projecting ribs are fitted in the respective second cavities, and the second plurality of lower projecting ribs are installed in the respective first cavities. The container assembly is adapted to be releasably lockable by being fitted to each other.   107. The container assembly according to claim 106, wherein the first and second containers are made from a polymeric material.   107. The container assembly of claim 106, wherein the first plurality of upwardly projecting ribs creates a first pattern that is perpendicular to the direction of the first edge, and the second plurality of downwardly projecting ribs. The container assembly, wherein the ribs create a second pattern that is perpendicular to the direction of the second edge.   107. A container assembly according to claim 106, wherein the first edge and the second edge are adapted to form a sealing device.

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