Title:
Screw Top Dome Lid With Multiple Compartments
Kind Code:
A1


Abstract:
The present invention relates to container lids, and more specifically multiple compartment containers having a selectively removable dome top lid including a plastic insert which defines two distinct compartments, wherein the container can be used to package and store various commercial products.



Inventors:
Brashear, Robert (Perkasie, PA, US)
Application Number:
11/875116
Publication Date:
04/23/2009
Filing Date:
10/19/2007
Assignee:
BALL CORPORATION (Broomfield, CO, US)
Primary Class:
Other Classes:
220/378, 220/528, 220/288
International Classes:
B65D25/02; B65D25/04; B65D41/04; B65D53/08
View Patent Images:
Related US Applications:
20090169703OXYGEN INFUSION CONTROL FOR COFFEE CONTAINERJuly, 2009Scarola
20060196874Trash can with sensorSeptember, 2006Yang
20060016807Foldable freight containerJanuary, 2006Hsu et al.
20080173652Integral heat-resisting structure of a disposable drinking cupJuly, 2008Chou
20080179330Trash containment systemJuly, 2008Brooks et al.
20090001080SYSTEMS FOR CONTAINING AND STORING MATERIALSJanuary, 2009Mirabile et al.
20100051492PAINT CLEAN-UP CONTAINERMarch, 2010Vizl
20050167430Double rib overcap for a container with a removable membraneAugust, 2005Varadarajan
20060108314Sanitary double cap allowing addition of adjunct to contents of a containerMay, 2006Cho
20060037878Spring biased canister for toilet brush or plungerFebruary, 2006Brown et al.
20080202948COMBINATION CANTEEN AND FLYING DISKAugust, 2008Young



Primary Examiner:
EDWARDS, BRETT J
Attorney, Agent or Firm:
Sheridan Ross PC (Denver, CO, US)
Claims:
What is claimed is:

1. A dual compartment container, comprising: a main compartment defined by a base and sidewalls extending upwardly therefrom; a lid comprising an upper portion and lid sidewalls extending downwardly therefrom to define a secondary storage container; a closure mechanism integrally interconnected to said lid sidewalls which engage said sidewalls of said main compartment, wherein said lid can be selectively removed from said main compartment; and an insert operably sized to engage an interior surface of said lid sidewalls, wherein the main compartment is isolated from said secondary storage compartment.

2. The container of claim 1, wherein said insert sealing engages the interior surface of said lid sidewalls to form a substantially airtight seal.

3. The container of claim 1, wherein said plastic insert further comprises projections that are adapted to engage a user's fingers to facilitate removal of said insert from said lid.

4. The container of claim 1, wherein said insert has a gasket material positioned proximate to a perimeter edge to facilitate sealing.

5. The container of claim 1, wherein said insert is comprised of a transparent plastic material.

6. The container of claim 1, wherein said closure mechanism comprises at least one of a thread, an offset lug, a snap fit and a hinge.

7. The container of claim 1, wherein said closure mechanism is increasingly tightened or released with selective rotation of said lid.

8. The container of claim 1, wherein said insert is comprised of a substantially impermeable plastic material.

9. The container of claim 1, further comprising a sponge sized for positioning in said secondary storage compartment.

10. The container of claim 1, wherein a lower portion of the lid sidewall is knurled to facilitate engagement with a user's fingers.

11. The container of claim 1, wherein said main compartment is adapted to store a wax material and said secondary compartment is adapted to store a sponge.

12. The container of claim 1, wherein said insert is operably retained within said lid with a bead extending at least partially on the interior surface of said lid sidewalls.

13. A container, comprising: a first compartment defined by a base with a sidewall extending therefrom; a lid having an upper portion and a lid sidewall extending therefrom that define a second storage compartment; a closure mechanism integrated into said lid sidewall that engages said sidewall of said first compartment, and a means for dividing which is selectively interconnected to an inner surface of said lid sidewall, wherein said first compartment is separated from said secondary storage compartment when said lid is interconnected to said first compartment.

14. The container of claim 13, wherein said means for dividing includes a retaining bead positioned about an exterior edge thereof.

15. The container of claim 13, wherein said means for dividing is at least one of a press fit and threadingly engaged to said lid.

16. The container of claim 13, wherein said lid includes a plurality of inwardly extending protrusions that receive said means for dividing.

17. The container of claim 13, wherein said lid is interconnected to said first compartment with at least one of a thread, a lug, a snap fit, and a hinge.

18. The container of claim 13, wherein said lid includes a plurality of knurls on an outer periphery thereof.

19. The container of claim 13, wherein said base includes an indentation that facilitates stacking of multiple containers.

20. A metallic, substantially airtight container which is adapted to store at least two distinct items, comprising: a main compartment defined by a base and sidewalls extending upwardly therefrom; a closure mechanism integrally interconnected to an upper portion of said sidewalls; a dome-shaped lid with a complimentary closure mechanism adapted to engage the closure mechanism on said sidewalls, wherein said dome shaped lid may be selectively removed or placed on said main compartment; and wherein said dome shaped lid has sufficient volume to store an item; and a divider which is frictionally engaged to an interior surface of said dome shaped lid to separate the storage volume in said dome-shaped lid and a storage volume in the main compartment.

21. The substantially airtight container of claim 20, wherein said divider engages an upper edge of said sidewalls when said dome-shaped lid is tightened on said main compartment to facilitate sealing the main storage compartment from the storage compartment in said lid.

Description:

FIELD OF THE INVENTION

The present invention relates to lids for containers, and more specifically dual compartment containers having a selectively removable dome top lid used for efficiently storing multiple products.

BACKGROUND OF THE INVENTION

Containers are well known in the art and are utilized to store a variety of items. With the introduction of resealable screw top containers, a huge demand has been created for multi-purpose resealable containers which may be used to package and store various commercial products. These containers eliminate the necessity of repackaging the product after use and the inconvenience related thereto, and provide a container which is used multiple times for both packaging the associated product and subsequently storing the product for further use. After each subsequent use, the container may be conveniently resealed for further use. As used herein, the term “commercial products” applies to both solid and liquid commercial items, including but not limited to household products such as lubricants, sealants, and spackles; skin and hair care products such as lotions, pomades, gels, mousses, and cosmetics; human and animal food products; and automotive products such as car polishers, waxes, cleaners, etc.

In general, metal containers with shaped lids have not been utilized for storing multiple products due to the likelihood of product contamination and spoilage, and the general public misconception that shaped container lids are incapable of convenient stacking and storage. Although previous attempts have been made to design resealable containers with shaped lids, these products have generally been very limited and impractical in their design and use. For example, U.S. Pat. No. 7,014,060 describes a planar container lid which has a twist opening, and is thus is not practical for housing products within the lid.

More recent attempts to package and store commercial products in containers have been accomplished by using lids having pull-tab mechanisms, hinges, or rotatably closing screw top lids. Although these products are suitable for many uses, and are generally accepted by the consuming public, they have significant disadvantages when compared to efficiently sealed containers. More specifically, pull-tab, hinged, and screw top lids have very poor oxygen barrier characteristics, and these types of containers promote contamination, allow the product to dry out and result in an unusable and spoiled product. Furthermore, these lids can easily crack and expose the product to the environment. Thus, these types of inefficiently sealed containers are costly because they irreparably damage the product and make it necessary to replace the spoiled product.

Further, conventional planar lids are suitable for housing individual products; however, these types of lids have numerous disadvantages when compared to containers capable of storing multiple products. In particular, when performing a task requiring more than one product it becomes tedious and time consuming to locate the many individual containers storing necessary products. Thus, these types of single compartment containers are inefficient for performing multi-product tasks.

Additionally, storing individual products in single compartment containers take up a significant amount of space. These types of conventional containers require even more space because they cannot be stacked efficiently. Traditional planar lid containers easily shift and fall off one another, making it more difficult to confine and locate the containers. Thus, these types of containers are not spatially or organizationally efficient.

Also, recent attempts to package and store commercial products in containers have been accomplished by using non-metallic plastic and foam type materials. Although suitable for some purposes, they have numerous disadvantages when compared to metallic containers. More specifically, non-metallic containers are not as rigid as metal containers, and thus cannot be stacked as high as metal containers which limits the volume which can be shipped, and thus increases expenses. Furthermore, non-metallic containers are not durable, and are prone to damage and leaking during shipment and placement for sales, thus adding additional expense. Additionally, multi layer barrier plastics and foams are generally not recyclable like metal containers, which fill landfills and are thus not environmentally friendly.

Finally, conventional container lids are generally very difficult to open and close and thus require additional exertion. Children, physically disabled, or elderly persons may be physically limited and unable to use such containers because they are so burdensome. Thus these types of containers are not easy or practical to use for many.

Thus there is a significant need in the container industry to provide an economical, easy to use, stackable multi-compartment container which may be used for packaging and storing a variety of commercial products and which eliminate many of the sealing, storage, spatial, and practical problems described above.

SUMMARY OF THE INVENTION

It is thus one aspect of the present invention to provide a dome top metallic lid for a container which is sealed and capable of storing multiple commercial products for extended periods of time. Thus, in one embodiment of the present invention, a metallic container is provided with male projections on the interior surface of a lid that rotatably engage a plurality of lugs on the upper end of a base sidewall. Preferably, the angle of rotation drives the male projections to engage the lugs. Upon rotation of the lid, the male projections engage a plurality of lugs, to create a long lasting, substantially airtight seal and locking mechanism. More preferably, the container and lid are sealed to prevent the stored commercial product, such as car wax, from drying out and becoming unusable. It is a further aspect of the present invention to provide a dome top metallic lid for a container that generally provides additional storage space. Thus, in one embodiment of the present invention, a container with a unique dome lid shape is provided, rather than the conventional planar lid shape. The extruded dome shape lid provides storage for additional commercial products. More specifically, the dome shape lid in one embodiment accommodates a substantially disk geometric shape sponge, and thus the dome shape lid acts as a sponge retainer which facilitates efficient multi-product storage of the products contained therein.

It is a further aspect of the present invention to provide a dome top metallic lid for a container which provides compartmentalized storage. Thus, in one embodiment of the present invention a dual compartment container is provided, rather than a single compartment container. More specifically, a plastic insert is provided with an outer band having a compressible feature to retain a product in the dome shape lid. Preferably, the plastic insert is retained in the dome shape lid by an inward bead feature that seals a product within the dome shape lid. Alternatively, the bead feature may be altered with dimples or threads or eliminated. In one embodiment, the plastic insert forms a separate and distinct compartment to store a disk shape sponge. More preferably, the plastic insert creates dual compartment storage for car wax and a sponge which facilitates efficient compartmentalization of the container and thus an efficient container for performing multi-product tasks.

Alternatively, it is another aspect of the present invention to provide a plastic insert which is easily removable. More specifically, in one embodiment of the present invention a plastic insert including finger engagement depressions is provided. Preferably, the plastic insert in one embodiment has two radially opposing finger engagements to promote easy insertion and removal. After engaging the finger engagements of the plastic insert, a user squeezes and bends the plastic liner to change the diameter of the plastic insert and disengage the plastic insert from a retaining bead seam, thereby allowing removal of a plastic insert from the lid.

It is another aspect of the present invention to provide a dome top metallic lid that is easy to open. Preferably, the dome top metallic lid in one embodiment has a knurled portion that enhances a user's grip during opening and closing so that children, physically disabled, and the elderly can open the container without tools or assistance. More preferably, the upper portion of the dome top metallic lid is knurled. Further, in one embodiment, the vertical height of the knurled portion is about 0.25 inches. Most preferably, the knurled portion of the dome top metallic lid is used in conjunction with the aforementioned closure mechanism to create a secure container that is easy to open and close and thus usable by all persons. Alternatively, a knurled portion on the dome lid may be utilized to facilitate automated capping at a container manufacturing plant.

It is another aspect of the present invention to provide a dome top metallic lid that is space efficient. Thus, in one aspect of the present invention a container with a profiled base is provided. More specifically, the base of the container in one embodiment is profiled to facilitate vertical shelf stacking. Preferably, the base is profiled with a circular indentation to interface with a dome shaped lid to create a safe, stable, and spatially efficient means of stacking containers.

Thus, in one aspect of the present invention, a dome top metallic lid is provided, and which comprises:

a dual compartment container adapted for storing a car wax and a sponge;

a selectively removable lid rotatably interconnected to said upper end of said base sidewall to create a seal, wherein a substantially dome shaped portion houses a sponge and wherein a main compartment houses a car wax;

a plastic insert including a compressible feature to retain a sponge in said dome shaped lid; and

a profiled base to facilitate stable vertical stacking.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front perspective view of a dome top lid for a container;

FIG. 2 is an exploded front perspective view of the invention illustrated in FIG. 1, and identifying the various components thereof;

FIG. 3 is a cross-sectional view of the dome lid configuration of the container shown in FIG. 1;

FIG. 4 is a front elevation view of the invention illustrated in FIG. 1;

FIG. 5 is a top plan view of the invention illustrated in FIG. 1; and

FIG. 6 is a bottom view of the invention illustrated in FIG. 1.

For clarity, the following is a list of components and the associated numbering used in the drawings:

#Components
2Dual compartment container
4Dome lid
6Main compartment
8Base
10Base sidewalls
12Sidewall upper portion
14Sidewall lower portion
16Closure mechanism
18Lid upper portion
20Lid sidewalls
22Lid sidewall interior surface
24Knurls
26Secondary storage compartment
28Insert
30Retaining bead seam
32Finger projections
34Insert perimeter edge
36Sponge
38Wax material
40Base stacking profile
42Male projections
44Lugs

DETAILED DESCRIPTION

Referring now to the drawings, FIGS. 1-6 depict various embodiments of a dome top metallic lid for a container. Referring now to FIG. 1, a dual compartment container 2 of the present invention is provided in a front perspective view, and which identifies a dome lid 4 which is positioned thereon. In use, the dome lid 4 can be removed from the base sidewalls 10 to access the compartments therein. After use, the dome lid 4 is repositioned on the sidewall upper portion 12 of the container to close and seal the contents of the container from the outside environment to improve the lifespan of the products by, for example, generally preventing the products from drying out. In a preferred embodiment of the present invention, a closure mechanism 16 is integrally interconnected to the dome lid 4 and the sidewall upper portion 12 of the base sidewalls 10 to facilitate closure and sealing. Furthermore, the dual compartment container 2 is generally comprised of a metallic material.

Referring now to FIG. 2, an exploded front elevation view of one embodiment of the dual compartment container 2 is provided herein. More specifically, the dual compartment container comprises a base 8 that includes a base sidewalls 10, a sidewall lower portion 14, a sidewall upper portion 12, and a main compartment 6, an insert 28 that includes an insert perimeter edge 34 and finger projections 32, a sponge 36, a dome lid 4 including knurls 24, and a closure mechanism 16 which includes male projections 42 and lugs 44. A main compartment 6 comprises a base 8 and base sidewalls 10 extending upwardly therefrom. A secondary storage compartment 26 comprises a dome lid 4 having a lid upper portion 18 and lid sidewalls 20 extruding downwardly therefrom. In a preferred embodiment of the present invention, the main compartment houses a wax material 38 and the secondary storage compartment houses a sponge 36. Moreover, in a preferred embodiment of the present invention, the closure mechanism 16 is integrally interconnected to lid sidewalls 20 which engage the base sidewalls 10 and thus allow the dome lid 4 to be selectively and repeatedly removed from the main compartment 6.

Referring to FIGS. 2 and 3, an insert 28 operably sized to engage a lid sidewall interior surface 22 to isolate a main compartment 6 from a secondary storage compartment 26 is shown. More specifically, the insert 28 forms a substantially airtight seal by engaging the lid sidewall interior surface 22. In one embodiment of the present invention, the insert 28 retains the sponge 36 in the dome lid 4 of the dual compartment container 2. Additionally, the insert 28 is comprised of a hard plastic such as polyvinyl chloride (“PVC”) or other substantially impermeable plastic material, and as appreciated by one skilled in the art can comprise any number of materials that provide a barrier to oxygen or other gases. In a preferred embodiment of the present invention, the insert 28 is comprised of a substantially transparent material to allow a user to visually identify the retained sponge 36 while keeping the sponge 36 clean and ready to use. In one embodiment of the present invention, the insert 28 further comprises radially opposing finger projections 32 which are adapted to engage a user's fingers to facilitate easy insertion and removal of the insert 28 from the dome lid 4. More specifically, the finger projections 32 allow a user to easily grasp and remove/replace the insert 28 to access the secondary storage compartment 26 and sponge 36. In an alternative embodiment, an insert 28 may further comprise a pull-ring or finger tab to facilitate removal of an insert from a lid. Further, alternative embodiments may also provide an insert comprising means for screwing an insert in and out of a container lid. However, as appreciated by one skilled in the art the liner may be removed by any number of ways which provide easy removal, or other removal methods known in the art.

Moreover, and again referring to FIG. 2, in one embodiment of the present invention, the insert 28 comprises an insert perimeter edge 34 which provides a compressible feature that retains the sponge 36 in the lid upper portion 18 of the dome lid 4 and also seals the dome lid 4 of the dual compartment container 2. The compressible feature of the insert perimeter edge 34 reduces air exchange between the atmosphere outside the dual compartment container 2 and the environment within the dual compartment container 2. More specifically, the insert perimeter edge 34 prevents the sponge 36 and wax material 38 from drying out and cracking during storage and thus prolongs the lifespan and usability of the sponge 36 and wax material 38. Alternatively, the insert 28 may be treated with a gasket material positioned proximate to the insert perimeter edge 34 which is compressed as the lid is tightened to enhance sealing performance and thereby prevents oxygen leakage between the environment external to the dual compartment container 2 and the internal environment of the dual compartment container 2. However, as appreciated by one skilled in the art the gasket material may also be comprised of any number of materials which provide efficient sealing including rubber, silicone, plastic polymers, or other gasketing materials known in the art.

In one embodiment of the invention shown in FIG. 2, a dual compartment container 2 further comprises a sponge 36 sized for positioning in a secondary storage compartment 26. More specifically, the sponge 36 is retained in a lid upper portion 18 of a dome lid 4 and is isolated from a main compartment 6 by an insert 28. As aforementioned, the dual compartment container 2 prolongs the lifespan of the sponge 36 by effectively sealing the dual compartment container 2. Preferably, the sponge 36 is cleaned and replaced in the secondary storage compartment 6 of the dome lid 4 after each use and thus the sponge 36 is prevented from becoming brittle because it is not exposed to sunlight and dry air. Moreover, in one embodiment of the present invention, the main compartment 6 is adapted to store a wax material 38. The longevity of the wax material 38 is enhanced because the wax material 38 is isolated and stored in the main compartment 6 and is sealed from the drying effects of the outside atmosphere. In a preferred embodiment of the present invention, the sponge 36 is complementary to and used in connection with the wax material 38 and thus both products necessary to waxing an automobile are readily available and easily stored together in the dual compartment container 2.

Referring now to FIG. 3, a detailed cross-sectional view of a dome lid 4 of a dual compartment container 2 is provided herein. More specifically, the dome lid 4 comprises a lid upper portion 18 which includes knurls 24 and a secondary storage compartment 26, lid sidewalls 20 which includes a lid sidewall interior surface 22 and a retaining bead seam 30, and a closure mechanism 16 including male projections 42. In one embodiment of the present invention, the lid upper portion 18 comprises a lower portion having knurls 24 to facilitate engagement with a user's fingers. The knurls 24 are preferably located around a substantial portion of the outer perimeter of a lid upper portion 18 of a dome lid 4. In a preferred embodiment of the present invention, the knurls 24 are approximately 0.25 inches in height. Preferably, the knurls 24 provide a better grip and allow persons of all physical abilities to easily open and close the dual compartment container 2. In an alternative embodiment, the top surface of a dome lid 4 may further comprise a knurled portion. In a further alternative embodiment, the lid sidewalls 20 and/or base sidewalls 10 may further comprise knurled portions. However, as appreciated by one skilled in the art a knurled portion or other gripping means known in the art may also be positioned on any exterior portion of the container to facilitate an easy grip. Alternatively, the knurls 24 may be utilized to facilitate automated capping at a container manufacturing plant.

Furthermore, and again referring to FIG. 3, in one embodiment of the present invention the upper portion of the lid sidewalls 20 comprises an inward retaining bead seam 30 which retains the insert 28 in the dome lid 4. More specifically, the insert 28 is operably retained within the dome lid 4 with the retaining bead seam 30 extending at least partially on the lid sidewall interior surface 22. In one embodiment of the present invention, the retaining bead seam 30 is located continuously around the perimeter of the lid sidewall interior surface 22. The retaining bead seam 30 securely engages the insert 28 to efficiently construct the secondary storage compartment 26. Moreover, in one embodiment of the present invention, the retaining bead seam 30 is engaged by pressing the insert 28 into the retaining bead seam 30. When the dome lid 4 is securely fastened to the base sidewalls 10 the insert 28 is compressed into the retaining bead feature 30 creating a substantially airtight seal and prolonging the usable life of the products contained in the dual compartment container 2. Alternatively, the retaining bead seam 30 may be altered or eliminated. In an alternate embodiment, a series of dimples or segmented beads could be utilized to form the retention feature. Moreover, in an alternate embodiment, the retaining bead seam 30 could be eliminated and instead threads could perform the retention function.

Referring now to FIG. 4, a front elevation view of one embodiment of the dual compartment container 2 is provided herein that depicts the integral interconnection of the dome lid 4 to the sidewall upper portion 12 of the base sidewalls 10. More specifically, the closure mechanism 16 comprises at least one of a thread, an offset lug, or a snap fit. Moreover, the closure mechanism 16 is increasingly tightened or released with selective rotation of the dome lid 4. In one embodiment of the present invention, the closure mechanism 16 comprises male projections 42 located on the lid sidewall interior surface 22 of the dome lid 4 and lugs 44 located on the sidewall upper portion 12 of the base 8. In one embodiment, to engage the closure mechanism 16, the dome lid 4 is positioned on the base sidewalls 10 and then a downward rotational pressure is applied to interconnect the dome lid 4 to the base sidewalls 10. Further, upon rotation of the dome lid 4, the male projections 42 integrally interconnect the plurality of lugs 44 to seal the dual compartment container 2. Preferably, when a downward rotational pressure is applied the lugs 44 are forced at least partially under the male projections 42 and further rotation tightens the interconnectedness of the male projections 42 and the lugs 44. In a preferred embodiment of the present invention, the lugs 44 are located equidistantly around the outer perimeter of the sidewall upper portion 12. However, as appreciated by one skilled in the art the closure mechanism may also be comprised of any number of closure means including snap fits, hinges, threads or other closure mechanisms known in the art.

Furthermore, in one embodiment of the present invention, the dome lid 4 is interconnected to the sidewall upper portion 12 by rotatably coupling a plurality of male projections 42 with a plurality of lugs 44. In a preferred embodiment of the present invention, to close and seal the dual compartment container 2, the user applies a rotationally downward pressure to drive the male projections 42 on the dome lid 4 to securely engage the corresponding lugs 44 on the base sidewalls 10 and thus creates a long lasting, airtight seal and closure mechanism. Additionally, the closure mechanism 16 can be disengaged to open the dual compartment container 2 by rotating the dome lid 4 to uncouple the male projections 42 from the lugs 44. In a preferred embodiment of the present invention, when the closure mechanism 16 of the dual compartment container 2 is engaged the seal prevents the sponge 36 and wax material 38 from drying out and becoming unusable.

In another aspect of the present invention, the closure mechanism 16 is used in connection with the knurls 24 to create a dual compartment container 2 that is easy to open/close because the knurls 24 provide an easier and better grip and the closure mechanism is easy to engage/disengage. Alternatively, the dome lid 4 is interconnected to the sidewall upper portion 12 by a conventional double seam commonly used in the container manufacturing industry.

Referring now to FIGS. 5 and 6, a top and a bottom view, respectively, of one embodiment of the dual compartment container 2 of FIG. 1 are provided herein. More specifically, the base 8 comprises a base stacking profile 40 to facilitate vertical shelf stacking. The base stacking profile 40 is profiled with a circular indentation to interface with a dome shaped lid. Thus, in a preferred embodiment of the present invention, the base stacking profile 40 of one dual compartment container 2 interconnects to a dome lid 4 of another dual compartment container 2 to securely and efficiently stack multiple containers vertically on top of one another. In a preferred embodiment of the present invention, the base stacking profile 40 is utilized at various times to stack multiple dual compartment containers including packaging and shipping processes, commercial display aspects, and individual user storage of the dual compartment container 2.

For example, in one embodiment of the present invention, the dual compartment container is utilized to retain car wax and a sponge. More specifically, the wax material 38 is located in the main compartment 6 while the sponge 36 is retained in the dome lid 4 by the insert 28. To access the products, the user grasps the knurls 24 on the lid upper portion 18 of the dome lid 4, twists the dome lid 4 to disengage the closure mechanism 16 by uncoupling the male projections 42 from the lugs 44, and separates the dome lid 4 away from the main compartment 6. Then, the user engages the finger projections 32 to remove the insert 28 from the retaining bead seam 30 of the lid sidewall interior surface 22 to remove the sponge 36. Once the insert 28 is removed the user can easily access both the sponge 36 and the wax material 38 necessary to wax an automobile. The user saves time and energy because both products are co-located in a single container. Having both products at hand, the user then can wax his or her automobile.

After use, the sponge is cleaned and then stored individually by replacing the sponge 36 in the lid upper portion 18 of the dome lid 4 and pressing the insert 28 into the retaining bead seam 30 by utilizing the finger projections 32. Then, the user places the dome lid 4 on the sidewall upper portion 12 of the base 8 and while applying pressure rotates the dome lid 4 downwardly to engage the closure mechanism 16 by integrally interconnecting the male projections 42 with the lugs 44 to securely fasten the dome lid 4 to the base sidewalls 10. The sealed dual compartment 2 can then be stacked vertically with other dual compartment containers 2 having dome lids 4 by means of the base stacking profile 40 located on the bottom of the base 8 to efficiently store the dual compartment containers until their next use.

Although the dome shape configuration provided in FIGS. 1-6 have proven to be effective, numerous other variations may be provided as appreciated by one skilled in the art and which may be dictated by preferred geometric shapes, material costs, and/or manufacturing concerns.

While one of the primary uses for the present invention relates to car wax, it is to be expressly understood that the invention has application in the packaging of other products including other commercial and noncommercial packaged products. Moreover, it is contemplated that the insert also will have use in connection with the storage of other objects desired to be isolated from the main compartment.

While an effort has been made to describe various alternatives to the preferred embodiment, other alternatives will readily come to mind to those skilled in the art. Therefore, it should be understood that the invention may be embodied in other specific forms without departing from the spirit or central characteristics thereof. Present examples and embodiments, therefore, are to be considered in all respects as illustrative and not restrictive, and the invention is not intended to be limited to the details given herein.