The present invention relates to containers. More specifically, this invention relates systems for securely stacking containers.
Containers are often stacked on top of one and other. Stacked container can be stabilized during shipping or transporting using braces, straps or tie-downs and the like. Sometimes stacked containers are nailed or screwed together to provide the required stability to transport them over long distances.
The present invention is directed to a container stacking and securing system. The securing system is described herein in terms of a top container and a bottom container that are placed in a stacked position. But it will be clear to one skilled in the art that the securing system can be used to secure any number of containers together through any set of adjacent container panels including container side panels.
In accordance with the embodiments of the invention the securing system includes an interlock mechanism fits together to secure a bottom container and a top container (also referred to herein as a first container and a second container) together in a stacked position. The interlock mechanism includes, for example, posts, legs or support features that protrude from the outer bottom surface of a bottom panel of the top container and/or outer top surfaces of a top panel of the bottom container. In operation, the posts, legs or support features fit into matched or fitted apertures that are on or that pass through the other of the bottom panel of the top container and/or the top panel of the bottom container when the bottom container and the top container are placed a the stacked position, The posts, legs or support features are formed from any suitable material including, but not limited to, metal, wood, plastics or polymers, composite materials and combinations thereof.
In accordance with the embodiments of the invention the posts, legs or support features all protrude from the outer bottom surfaces of a bottom panel of the top container and fit into matched or fitted apertures that are on or that pass through a top panel of the bottom container with the bottom container and the top container in the stacked position. In this embodiment , the posts, legs or support features can provide a level support for the top container when the top container is removed from the top panel of the bottom container and placed on a different support surface.
With the bottom container and the top container in the stacked position and with the posts, legs or support features in the positions, as described above, the posts, legs or support features are locked into the fitted or matched apertures by, for example, braces, brackets, clamps and pins (magnet or spring loaded) that engage portions of the posts, legs or support features within the fitted or matched apertures or engage portions of the posts, legs or support features that pass through the top panel of the bottom container.
In accordance with the embodiments of the invention the securing system include a pin locking mechanism. The pin locking mechanism includes a pin channel that passes through a side edge of a container panel or interlock block, such as described below and passes into a portion of a matched aperture or second matched aperture. The posts, legs or support features are preferably substantially cylindrical with a grooved locking channel or aperture that engages a securing pin that passes over a grooved locking channel or aperture on portions of the posts, legs or support features with the top container and the bottom container in the stacked position.
In further embodiments of the invention, the interlocking mechanism of the securing system further includes interlock blocks that have matched apertures for receiving posts, legs or support features. In accordance with one embodiment of the invention, interlock blocks have a second set of matched apertures that are place against an interior upper surface of the top panel of the bottom container with the second set of matched apertures eclipsing a first set of matched apertures that pass through the top panel of the bottom container. Posts, legs or support features that protrude from the outer surface of the bottom panel of the top box are passed through the first set of matched apertures on the top panel of the bottom container and into the second set of matched the apertures on the interlock blocks. The posts, legs or support features are then secured within the second set of matched apertures using a securing pin mechanism or any other suitable securing mechanism, thereby securing the top container and the bottom container in the stacked position.
In further yet embodiments of the invention, interlock blocks fit into cut-outs on edges of the top panel of the bottom container and/or cut outs of edges of the bottom panel of the top container. The interlock blocks in accordance with this embodiment have tongue and grove features, dove tail features and any other suitable fitted features allow the interlock blocks to fit into matched tongue and grove features, dove tail features and/or of the fitted features on internal edges of the cut-outs on the container panels, such that the interlock blocks are secured within the cut-outs on the container panels. The interlock blocks include matched apertures to receive the posts, legs or support features. In operation the interlock blocks are fitted into the cut-outs and secured therein and the posts, legs or support features that protrude from a bottom panel of the top container, the top panel of the bottom container, or a combination thereof, are positioned through or into the matched apertures on interlock blocks. The posts, legs or support features are then secured into the matched apertures of the interlock blocks with the top container and the bottom container in a stacked position using braces, brackets, clamps, pins or combinations thereof
While the invention is described herein as being for securing containers together in a stacked position 150, it will be clear to one skilled in the art that the securing system, of the present invention can be used to attached containers together through any adjacently positioned container panels, walls or surfaces, such as side container panels. Containers that are secured together through the system of the present invention do not need to be the same size or have the same shape. Portions of the posts, legs or support features 131, 132, 133 and 134 and portions of the matched or fitted apertures 121, 122, 123 and 124 can be located on both the top panel 101 and the bottom panel 103 as long as there is a paired post, leg or support feature and matched aperture that align with each other when the containers are mated together or stacked. Also, while paired posts, legs or support features 131, 132, 133 and 134 and matched apertures 121, 122, 123 and 124 are shown to be positioned at or near corners of the container panels 101 and 103, the posts, legs or support features 131, 132, 133 and 134 and matched apertures 121, 122, 123 and 124 can be located at any number of different locations on adjacently positioned container panels, walls or surfaces to secure containers together.
In the embodiment shown the posts, legs or support features 131, 132, 133 and 134 are on the same panel 101 and the posts, legs or support features 131, 132, 133 and 134 can provide a level support for the top container 101′ when the top container 101′ is removed from the stacked position 150 on the top panel 103 of the bottom container 103′ and placed on a different support surface, such as a floor of shelf.
With the bottom container 103′ and the top container 101′ are in the stacked position 150 and with the posts, legs or support features 131, 132, 133 and 134 placed in the matched apertures 121, 122, 123 and 124, the posts, legs or support features 131, 132, 133 and 134 are locked into the matched apertures 121, 122, 123 and 124 by, for example, braces, brackets, clamps and pins (magnet or spring loaded) features that engage and secure portions of the posts, legs or support features 131′ and 132′ within portions the matched apertures 121, 122, 123 and 124.
In accordance with this embodiments of the invention, the posts, legs or support features 221 are attached to a bottom panel 201 of a top container 101′ (
The interlock blocks 351 (
The present invention has been described in terms of specific embodiments incorporating details to facilitate the understanding of the principles of construction and operation of the invention. As such, references herein to specific embodiments and details thereof are not intended to limit the scope of the claims appended hereto. It will be apparent to those skilled in the art that modifications can be made in the embodiments chosen for illustration without departing from the spirit and scope of the invention.