This invention relates to a folding/unfolding transport container and a method of folding and unfolding a transport container.
Boxes are commonly used in transporting, moving, conveying, sorting and storing goods and materials, and are employed by a diversity of industries such as trucking, warehousing, manufacturing, office moving and household goods moving.
Large-capacity containers are used for easy transfer of goods and cargo from one transporting vehicle to another or for shipping cargo overseas or overland.
Containers have been universally adopted for the transportation of cargo because this form of shipment has eliminated the need for transferring the cargo manually or by conventional means from one vehicle to another during the transport to a certain destination.
The main disadvantage of conventional containers which are formed by a rigid prismatic structure results from the fact that after use and delivery, the empty containers must be transported from their destination to a point of loading from where they are shipped back to points of re-use.
The requirement to reposition empty containers is one of the more persistent problems in the container transport industry. Empty container transport involves high costs, particularly for shipping lines, since they generally bear these container management costs. Not surprisingly, shipping lines try to reduce the costs of moving empty containers as much as they can. Most strategies are focused on matching cargo with empty containers. Due to trade imbalances transport movements of empty containers remain to some extent unavoidable.
These operations are economically disadvantageous because the empty container, which is a rigid structure, occupies in the transporting means a space which otherwise could be occupied by containers with cargo.
Therefore, foldable containers are an attractive option from the point of view of saving transport costs as well as handling and storage costs. So far, however, such containers have not been introduced successfully.
In order to eliminate these disadvantages resulting from the use of rigid-structure, prismatic containers, containers with collapsible structure components have been designed and built. In such containers the walls can be folded onto the base so that after discharge of the cargo, the empty container will occupy less space in the collapsed state for transport.
Containers with folding walls usually comprise reinforcing or retaining members of the walls. These members may get lost and therefore may cause serious inconvenience in the assembly or unloading of such containers with complicated structure elements.
Collapsible containers of this type are a solution to the problem of dead space occupied once the cargo has been delivered since in the collapsed state, the height of the containers is substantially reduced and at least four collapsible containers can be transported in place of one rigid container.
When special designs are incorporated in the hinge joints to prevent the entry of foreign material, it is hard to obtain the required sealing effect because in prolonged use of the containers, a number of problems develop at the hinge joints. The problems and failures cause additional expenses with the resulting disadvantages in the handling of this type of cargo containers. U.S. Pat. No. 4,177,907 relates to a shipping container for the transport of goods. This container has all its walls connected together by means of hinges and thus in the folding down operation, as in the reverse one of erection, no wall is completely freed from the remaining ones. It discloses that the manoeuvres consequently become quicker and safer and the structure of the container assumes greater rigidity in comparison with those containers in which one or more walls have to be detached completely. This container on folding/collapsing folds vertically down to the base.
U.S. Pat. No. 4,630,746 provides an improved collapsible, stackable storage or shipping container in which the respective walls, end sections and corresponding hinge elements by which the sections are pivotally connected are all formed of a molded plastic material and wherein each of the corresponding adjacent pivotally connected walls or wall sections and their corresponding aligned hinge elements are interconnected by transverse pivot pins of plastic or metal.
However, the above-mentioned patents do not disclose a foldable transport container which substantially folds horizontally against a side wall and in which the process of folding can be facilitated using external automatic apparatus.
To obviate the aforesaid drawback, the present invention provides a transport container which can be folded and unfolded conveniently.
It is another object of the present invention to provide a transport container which can be folded and unfolded automatically using an apparatus rather than manually.
The features of this invention are set forth with particularly in the appended claims. The invention, together with its objects and advantages thereof may be best understood by reference to the following description taken in conjunction with the accompanying drawings, in which like reference numerals identify substantially like elements in the several figures and in which:
For the purpose of promoting an understanding of the principles of the invention, reference will now be made to the embodiment illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated bag, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.
The side SS1 has doors which can be used for loading/unloading. During the folding process, the side SS1 is moved towards the side SS2 in the first step. These sides do not have any folding hinges and are straight. The base is divided into two or more sections. For example into first section (B1) and second section (B2). The sides of the container having sealing mechanisms to prevent entry of liquids in the container. All the sides of the container also having openings to facilitate the loading and unloading of the container.
The sides FS1 and FS2 fold inward in a zig-zag manner into two or more folds, along folding edges. In
In the first step of folding the container side SS1 is moved towards the side SS2 and the sides FS1 and FS2 are simultaneously folded inwards.
As can be seen in
All documents cited in the description are incorporated herein by reference. The present invention is not to be limited in scope by the specific embodiments and examples which are intended as illustrations of a number of aspects of the invention and any embodiments which are functionally equivalent are within the scope of this invention. Those skilled in the art will know, or be able to ascertain using no more than routine experimentation, many equivalents to the specific embodiments of the invention described herein.
Number | Date | Country | Kind |
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620/DEL/2007 | Mar 2007 | IN | national |
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/IN07/00579 | 12/11/2007 | WO | 00 | 9/21/2009 |