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[0001] This application is based on and claims priority from provisional patent Application No. 60/429,687 filed on Nov. 27, 2002.
[0002] The present invention relates to thermoplastic containers and lids, and more particularly to a device for stacking thermoplastic containers and/or lids.
[0003] The use of containers for the storage of items is well known. Such containers are used to store a variety of articles, from food to general household items including everything from craft supplies to children's toys. Generally, such containers can be characterized by shape and size. Containers that do not include a lid require a separate sealing member, such as a plastic wrap or aluminum foil. Often, the plastic wrap or aluminum foil is loose or jostled during movement of the container, and hence, the container is usually not properly sealed or closed to prevent contents therein from spilling. Containers that include lids overcome this problem.
[0004] As is well known, many different types and sizes of container lids exist. When such container lids are placed together in a confined space, such as a cupboard, cabinet, drawer, shelf, refrigerator, or the like, a disorganized condition can develop, preventing a user from easily locating a container lid of a particular size and shape. Further, as a user is attempting to locate a particular container lid, other items may be jostled, thereby causing a container lid or one or more of the items to fall off a supporting surface to the floor, resulting in breakage of the items and/or spilling of contents and/or lost container lids. Still further, when container lids are stacked on top of each other in an unconfined location, the container lids tend to slide out of the stacked configuration and into a disorganized state making it difficult to locate the proper size and/or shaped container lid.
[0005] Carroll, U.S. Pat. No. 4,241,668 discloses a frame for mounting a container and a cover below a supply shelf. The frame is suspended from spaced apart rails depending from the supply shelf by multiple hooks. The frame includes side beams with inwardly extending flanges for engaging the container and cover and allowing the container and lid to inserted and removed from the frame.
[0006] Bross U.S. Pat. No. 4,632,472 discloses a slidable drawer system mounted below a shelf. Guide rails are mounted to the shelf and receive flanges of the drawer, wherein the drawer slides in and out of the guide rails. A finger is attached to each guide rail wherein the fingers contact the rear wall of the drawer to prevent removal of the drawer from the guide rails in a first direction. To completely disengage the drawer from the guide rails the fingers must be pushed upwardly away from the rear wall to disengage the drawer from the guide rails. A front portion of the drawer includes extending side walls that contact the guide rails as the drawer is being pushed inwardly, thus preventing the drawer from sliding out of the housing in a second direction.
[0007] DeBruyn U.S. Pat. No. 4,653,818 discloses a dry food storage container system wherein containers are supported by hanger plates that form a rack and are adapted to slide in and out of a cabinet. An upwardly projecting lug formed on the hanger plate restricts free sliding movement of the container. The containers may be laterally removed from or laterally inserted into the hanger plates when the container is lifted slightly over the lugs.
[0008] Marino Jr. U.S. Pat. No. 5,964,359 discloses a modular storage system for multiple containers including a base having a top wall, a side wall, and a bottom wall wherein the bottom wall has a front opening cutout. A jar with cover may be inserted into the opening wherein the cover rests on the bottom wall and suspends the jar with contents therefrom.
[0009] Semon et al. U.S. Pat. No. 6,056,378 discloses an add-on drawer and a method of mounting the same to a horizontal surface. The drawer includes a tray for storing items and at least two rails for slidably supporting the drawer. Each rail includes stops to prevent removal of the drawer from below the horizontal surface.
[0010] Dimes U.S. Pat. No. 371,044 discloses a plate rack. The rack holds plates in a vertical position. The rack utilizes base supports and wire bent to the curve of the plate to support the plate in the vertical position.
[0011] Moore U.S. Pat. No. 1,349,084 discloses a kettle cover drainer. The device acts as a stand utilizing bent wires to hold a kettle cover in a vertical position in order for the cover to drain of any liquid. The wires are held in a vertical orientation by attachment to a base that has a drain for funneling runoff from the kettle cover.
[0012] Hay U.S. Pat. No. 1,994,195 discloses a rack for drying or storing dishes. The rack utilizes a horizontal wire frame having a length much greater than its width along with vertical wires in contract with the horizontal wires. Dishes are then placed in the rack in a vertical position and held there by the vertical wires.
[0013] Greensfelder U.S. Pat. No. 2,600,755 discloses a wire cover rack. The rack rests on a horizontal surface and utilizes a series of interconnected wires to support the covers. The rack comprises a base section of parallel wires and a back section of parallel wire to support the covers. The base section is raised by a support at one end so it is not parallel with the surface and the back section is angled away from vertical and toward the base. Thus, when covers are inserted vertically they contact both sections and are held in the vertical position.
[0014] Swan U.S. Pat. No. 4,396,123 discloses a tape cassette holding bracket. The holding bracket is a generally L-shaped member with a plurality of slots for holding cassettes. The slots further include flanges that extend into the slots that hold the cassette in place at the wider portion of the cassette.
[0015] Vaughn U.S. Pat. No. 5,660,284 discloses a storage rack for container lids. The rack is capable of storing lids in either a horizontal or vertical position. The system utilizes adjustable panels that store the lids at angles that hold the lids in the rack in either the horizontal or vertical position.
[0016] In accordance with one aspect of the present invention, a stacking device for a thermoplastic container lid includes a main member, a plurality of support members extending from the main member having a first plurality of interference fits and a plurality of wall members joined to the support surfaces having a second plurality of interference fits. The first plurality of interference fits are capable of resisting relative movement of the support members and the lid in a first direction and the second plurality of interference fits are capable of resisting relative movement of the wall members and the lid in a second direction transverse to the first direction.
[0017] In accordance with another aspect of the present invention, a stacking device for includes a main member, a plurality of first means joined to the main member and having a plurality of first interference fits, and a plurality of second means extending from the first means and having a plurality of second interference fits. The first interference fits are capable of resisting relative movement of the stacking device and container lids in a first direction and the second interference fits is capable of resisting relative movement of the stacking device and container lids in a second direction transverse to the first direction. The stacking device further includes third means for establishing a resistance force that increases during insertion and removal of container lids from the stacking device.
[0018] In accordance with still another aspect of the present invention, a combination includes a stacking device including a main member, a first plurality of support members extending from the main member, and a second plurality of wall members extending from the support members, the support members and wall members defining a third plurality of cavities bounded by fourth and fifth pluralities of openings. The combination further includes a sixth plurality of container lids wherein the support member and wall member define interference fits with the container lids and wherein each of the container lids experiences a resistance force that increases during insertion and removal from the stacking device.
[0019] In accordance with yet another aspect of the present invention, a one-piece stacking device includes a main member, support members extending from the main member and having a plurality of first interference fits, and wall members extending from the support members and having a plurality of second interference fits. The first interference fits are capable of resisting relative movement of an object in a first direction and the second interference fits are capable of resisting relative movement of an object in a second direction transverse to the first direction. The stacking device further includes a plurality of openings defined by the support members and the wall members, wherein the wall members include interference members adjacent the openings.
[0020] In accordance with another aspect of the present invention, a stacking device includes a main member, support members joined to the main member and defining a first plurality of interference fits and wall members extending from the support members and defining a second plurality of interference fits. The first interference fits are capable of resisting movement of an object in a first direction and the second interference fits are capable of resisting movement of the object in a second direction transverse to the first direction. The main member, the support members, and the wall members are formed integrally, a plurality of openings is defined by the support members and the wall members, and the wall members include interference members adjacent the openings.
[0021] In accordance with a further embodiment of the present invention, a combination includes a stacking device having a main member, a plurality of support members extending from the main member, and a plurality of wall members extending from the support members. The support members and wall members define a plurality of cavities. The main member, the support members, and the wall members are formed integrally. The combination further includes a container lid wherein the support members and wall members define interference fits with the container lids.
[0022] Other aspects and advantages of the present invention will become apparent upon consideration of the following detailed description.
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[0053] Referring now to FIGS.
[0054] A first plurality or set of openings
[0055] Referring now to FIGS.
[0056] Referring now to
[0057] Once the stacking device
[0058] As should be evident from the foregoing, up to six lids may be stored in the device
[0059] As seen in
[0060] In any of the embodiments described herein, the lid(s)
[0061] The remaining FIGS. illustrate other embodiments of the present invention. Referring now to
[0062] Each end portion
[0063] Referring now to FIGS.
[0064] As in the previous embodiment, the main member
[0065] As noted in the previous embodiment, the stacking device
[0066] A third embodiment of the present invention is shown in FIGS.
[0067] Referring now to
[0068] As in the previous embodiment, the device
[0069] Referring now to FIGS.
[0070] A user lifts the square container lid
[0071] All of the embodiments of the stacking device of the present invention are preferably made of a thermoplastic material. Alternatively, any of the stacking devices may be manufactured from any suitable rigid material such as glass, metal, wood, or any other similar materials. A preferable material will be rigid, inexpensive, and have the ability to be readily formed into a desired shape. Suitable plastic materials for any embodiment of the stacking device of the present invention include polypropylene, polyethylene, styrene, polystyrene, nylon, and a wide variety of other homopolymers and copolymers. Any suitable molding technique can be employed to form the stacking devices of the present invention, including but not limited to injection molding and thermoforming. The stacking devices are preferably integrally made but can also be formed in multiple parts that are snapped or pressed together during manufacture and assembly.
[0072] The stacking devices can further have any geometric shape corresponding to the shape of the container inserted therein. For example, the stacking device may have a triangular shape or a rectangular shape for triangular and rectangular shaped containers, respectively. Alternatively, the device need not have a shape corresponding to the shape of the container. Such an arrangement is shown in
[0073]
[0074] As is seen in
[0075]
[0076] Referring next to
[0077]
[0078] Referring next to
[0079] The bag
[0080] The device
[0081] Referring next to
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[0083] As should be evident, one may use single or ganged multiple stacking devices that are secured to a vertical support surface, a horizontal support surface or a non-horizontal and non-vertical support surface in any configuration and/or orientation desired by the user so that the containers are maintained in a desired arrangement.
[0084] The stacking device allows a user to address a variety of home storage problems. The stacking device enables a user to store and organize items to fully utilize available storage space. For example, in a refrigerator, closet, pantry, or the like, the present invention allows a user to hang container lids and/or containers from the underside of a shelf, thus freeing up the shelf surface space for the storage of other items. This type of use also ensures that the lids and containers are clearly in view and always in the same location, thus increasing the likelihood that any perishable food will be utilized before spoilage occurs.
[0085] Numerous modifications to the present invention will be apparent to those skilled in the art in view of the foregoing description. Accordingly, this description is to be construed as illustrative only and is presented for the purpose of enabling those skilled in the art to make and use the invention and to teach the best mode of carrying out the same. The exclusive rights to all modifications which come within the scope of the appended claims are reserved.