Collapsible containers are known having four or more flexible side panels with twist-and-fold frames. The side panels are folded on top of each other and the frames twisted into overlapping coils to form a compact structure for shipping and storage. But folding the frames into overlapping coils creates a stored container that readily springs open. Rubber bands are sometimes used to hold the coiled frames in the collapsed configuration, or the coiled container is fit into a bag that is often sewn to the side of the container as in Pat. No. RE37,924. But the pop-open tendency of such containers remains undesirable. Further, collapsing these containers and twisting them into overlapping coils is difficult for some people. There is thus a need for a way to more readily collapse the containers for shipment and storage.
Because the twist-and-fold containers are made of flexible material when heavier objects are placed in the containers the weight of the object deforms the bottom or sides of the containers, causing adjacent objects to move toward the heaviest object and impact together. There is thus a need to restrain movement of objects placed inside the containers, especially heavier objects.
A collapsible, twist-and-fold container is provided with at least one pocket fastened inside the container to hold items. The container advantageously has four sides, a bottom and a top which may be open or have a closable cover. The pocket is preferably located at a corner where the bottom and two sides intersect, with the pocket fastened to two adjacent sides and optionally fastened to the bottom as well. Preferably a pocket is located at each corner of the container. Further, one or more dividers are provided extending between opposing sides of the container. Releasable fasteners along opposing edges of the dividers are preferably provided. Additionally, a hook-and-loop strip is advantageously placed on the bottom of the container, facing outward, and sized so that the engagement with the fabric material covering the bottom of a car trunk is sufficient to restrain lateral movement and sliding of the container but not so strong as to make it difficult to disengage the container from the trunk bottom.
There is thus provided a collapsible container having two opposing side panels each joined to a top and bottom panel to form a ring. Each of the side, top and bottom panels has a flexible a tension loop frame covered by flexible material. The ring has two opposing ends each covered by an end panel. The ring and end panels form an enclosure with a plurality of interior corners adjacent each of the end panels. At least one interior pocket is formed in one of the corners and adjacent the bottom panel. The interior pocket is fastened to one of the side panels and the end panel adjacent the corner. The pocket has an open top facing toward the top panel and may be optionally fastened to the bottom panel.
In further variations, the collapsible container has an opening in the top panel and wherein there are at least four interior pockets in four interior corners adjacent the bottom panel: Moreover, the container may have a cover over the opening in the top panel with the cover being releasably fastened to the container. The container may also optionally have at least one exterior pocket on the outside of the container, and handles on the side panels or end panels. The container may also have an end pull on each of the end panels to help pull the end panels outward and facilitate collapsing of the container.
There is also provided an improved collapsible container having four tension-loop panels covered by flexible material with each panel joined to two other panels to form an enclosure with opposing top and bottom panels and two opposing side panels. The container has two flexible ends each located on opposing ends of the frames and attached to a plurality of the frames. The improved container has an opening in the one of the panels and at least one interior pocket having two opposing sides with each side fastened to a flexible side panel or flexible end. The interior pocket has an open top.
In further variations this improved container has the interior pocket further fastened to the flexible bottom panel. Moreover, the improved container may have a quadrilateral shape with eight corners and are at least four interior pockets, each interior pocket located at the four corners opposite the opening which is in the top panel. Further, the container may have an end pull on each of the flexible ends, with the end pull located at or adjacent to the middle of the end. Also, the container may have at least one external pocket fastened to the outside of the container. A cover may be placed over the opening with the cover releasably fastened to the container. One or more handles may be fastened to the container, preferably fastened to one or more of the tension loop frames. When the container is placed in the trunk of a vehicle the container may have a hook and loop fastener strip on the outside of the bottom panel. The fastener strip is preferably aligned with a diagonal line extending between two of the corners of the bottom panel. The tension loop frames may be too stiff to be twisted and formed into three overlapping coils. A divider panel can extend between opposing side panels and releasably fastened to at least one of the side panels.
There is also provided a method of folding a collapsible container where the container has a quadrilateral shape with eight interior corners formed by four panels covered by flexible material with each panel each having a tension loop frame. Each panel is also joined to two adjacent side panels to form a ring. Two flexible ends join to opposing ends of the tension loop frames to form an enclosure. Two of the panels form opposing side panels which are separated by and joined to opposing top and bottom panels. The method includes the steps of pulling on a first end pull fastened to one of the ends and extending outward from that end so as to move that end outward. The method also includes moving a corner of a first of the side panel that is adjacent that end pull toward a corner of the bottom panel connected to that first end panel so as to help place the first side panel adjacent the bottom panel.
The method can also optionally include the steps of pulling on a second end pull fastened to the other end and extending outward from that other end so as to move that other end outward. The method can further include moving a corner of the first of the side panel adjacent that second end pull toward a corner of the bottom panel connected to that other end panel to place the first side panel adjacent the bottom panel. The method also includes folding the second side panel toward the first side panel to form a stack of four panels.
These as well as other features of the present invention will become more apparent upon reference to the drawings in which like numbers refer to like parts throughout, and in which:
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Each panel 12 is connected to a tension loop frames 24 (
Discontinuous frames 24 can be used in lieu of the continuous loop frame. Such discontinuous frames combine the adjacent frames into a single piece along the adjoining sides of panels 12, with separate ends adjacent end panels 14, 16. Such discontinuous frames are described in more detail in U.S. Pat. No. 7,845,507, the complete contents of which are incorporated herein by reference.
Short panel spacers comprising strips of material fastened to two adjacent sides of panels 12 can also be used to join two adjacent panels 12. Such side panel separators are described in RE37,924, the complete contents of which are incorporated herein by reference.
The panels 12 and ends 14, 16 (and cover 20) may be made of flexible material such as fabric, Nylon, canvas, plastic etc. The material may be a flexible but solid material that blocks air passage, a woven material that may allow some air passage, or a mesh material with holes allowing ready passage of air. The material may be an insulated, flexible material, preferably having a double wall construction to retain heat or cold within the container 10. The container 10 walls 12 could be lined with PEVA, foam or other thermal insulation that is flexible, or in sufficiently small solid segments to allow flexing of the sides 12.
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The interior pockets 30 may be permanently fastened to the panel 12 or ends 14, 16 by various means, including, but not limited to sewing, adhesives and rivets. Removable fastening mechanisms can also be used, including, but not limited to hook and loop fasteners, snaps and buttons. The interior pockets 30 may be made of the same material as panels 12, or of different material. Mesh interior pockets 30 are preferred.
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An optional end pull 44 is fastened to one end 14, 16, and preferably an end pull 44 is provided on each opposing end. The end pulls 44 are located between the handle 42 and panel 12 forming the bottom of the container 10. Advantageously the end pulls 44 are located at or adjacent to the middle of each end 14, 16. The end pulls 44 can comprise a tab with one end sewn to the end 14 or 16 and a free distal end. The end pulls preferably comprise a loop of material with one end fastened to the end 14, 16 and the loop large enough to pass at least one finger through to pull on the loop. The end pull 44 can take various forms, including toggles, loops, straps, handles and buttons. The end pull 44 should be large enough to be manually grasped by hand and pulled, causing the end 14, 16 to which the end pull 44 is fastened or connected, to extend outward, as described below.
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When the material on the panels 12 is thick or stiff, it is difficult to fold the panels 12 adjacent to each other and the material forming the ends 12, 14 gets in the way and impedes folding the panels 12 on top of each other. By pulling outward on the end pulls 44 the ends 14, 16 do not impede the folding of panels 12 on top of each other. Thus, the end pulls 14 are pulled outward to make it easier to fold the front panel 12 inward against the bottom panel as seen in
The stack of four side panels 12 may then be twisted into overlapping coils is the material on the panels 12 and divider(s) 36 allows. Alternatively, the panels may be left flat and shipped in that flat, stacked configuration. Since the flat, stacked configuration has no coiled frame 24 resiliently urging the panel 12 into an expanded configuration, the stacked assembly is stable and does not tend to spring open. The stack may be placed in packaging for sales, typically consisting of clear plastic wrap with cardboard inserts bearing promotional material. To unpack the stacked panels 12, the panels are pulled apart manually in the reverse order in which they were stacked. The end pulls 44 may be pulled apart to help separate the stacked panels 12. After the container 10 is in its pop-open configuration, the divider(s) 36 may be fastened to opposing panels 12. Since the stack of four panels 12 can be shipped flat, the spring frame 24 need not be sufficiently flexible to be twisted into overlapping coils. That allows thicker, sturdier materials to be used for the container 10, and allows use of elongated frames made of metal or plastic wire or tubes which are not flexible enough to be coiled into even two overlapping loops, let alone coiled into the three overlapping loops typical of such twist-and-fold containers.
During use, the interior pockets 30 retain heavier items at the corners of the container 10, where the spring loop frames 24 and adjoining panels 12 and ends 14, 16 provide more support. Indeed, the interior pockets 30 fasten to at least two adjacent walls, such as panel 12 and either end 14, 16. Moreover, the interior pockets 30 are located so that they extend over or close to the frame 24 in the bottom panel 12, so the frame can further support the weight of an item placed in the interior pocket 30 either directly, or by transfer of the weight through the flexible material of the adjacent panel(s) 12 or ends 14, 16. As the interior pockets 30 are preferably configured to hold bottles, fragile items are further isolated from being hit on all sides as would occur if placed in the middle of the flexible bottomed container 10.
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As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure.
The above description is given by way of example and not limitation. Given the above disclosure, one skilled in the art could devise variations that are within the scope and spirit of the invention, including various ways of fastening the pockets 30, 38 and divider 36 to the container 10. Furthermore, the various features of this invention can be used alone, or in varying combinations with each other and are not intended to be limited to the specific combination described herein. Thus, the invention is not to be limited by the illustrated embodiments but is to be defined by the following claims when read in the broadest reasonable manner to preserve the validity of the claims
The application claims the benefit under 35 U.S.C. §119(e) to Provisional Patent Application No. 61/478,327 filed Apr. 22, 2011, the entire contents of which are incorporated herein by reference.
Number | Date | Country | |
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61478327 | Apr 2011 | US |