Abstract:
The invention concerns a strengthening mechanism for use within a corrugated structure. More specifically, the invention provides a corrugated insert that is inserted into a corrugated box. Such insert improves the compression strength of the corrugated box. This is particularly important when such corrugated box has one or more boxes stacked thereon.

Description:
CROSS-REFERENCE 
       [0001]    This patent application claims priority to Provisional Patent Application No. 61/476,243 entitled STRENGTHENING INSERT FOR A CORRUGATED BOX and filed on Apr. 15, 2011, all of the substance thereof being hereby fully incorporated by reference herein. 
     
    
     FIELD OF THE INVENTION 
       [0002]    The invention concerns a strengthening mechanism for use within a corrugated structure. More specifically, the invention provides a removable, corrugated insert that is inserted into a corrugated box. Such corrugated insert operates to improve the compression strength of the corrugated box. This is particularly important when such corrugated box has one or more boxes stacked thereon. 
       BACKGROUND 
       [0003]    Record storage in the United States is a multi-billion dollar per year business. The need for all manner of businesses and industries to protect and store their written records has been well documented. Typically such printed/written records are collected and sent to one or more of the several thousand record storage centers in the United States. 
         [0004]    In one example, such records are stored within corrugated boxes fashioned for such purpose. Corrugated boxes are most often used because they are readily manufactured and are inexpensive, often costing less than one dollar to produce. 
         [0005]    Record storage centers are often large to very large warehouses suitable for storage of the boxes by stacking them one upon another. Each box when filled can weigh between thirty and fifty pounds. With such weights, boxes upon which other weighted boxes must be able to bear the weight of other boxes positioned thereon. 
         [0006]    Often, such boxes fail due to their inability to withstand the weights of the boxes stacked upon them. When such failure occurs, a solution is required. The typical solution has been to re-box a failed box (i.e., remove the failed box and move its contents to a new box). Re-boxing costs a client money which can be many times more expensive than the cost of the original box or even its transport from a client&#39;s office to the record storage center. Multiplied over several hundred thousand boxes, and potentially millions of boxes, costs for such re-boxing can become massive. 
         [0007]    What is needed therefore is a low-cost, highly effective way to pre-strengthen a non-failed box or otherwise strengthen a box prior to its failure. Such strengthening should enable a box to be used, in the instance in which a box has already been used, to continue to be used without it being re-boxed. The strengthening mechanism should be such that by its use it immediately improves the compression strength of the box in which it is placed. 
       SUMMARY 
       [0008]    Accordingly, the invention provides a strengthening insert for placement within a container like a box. The strengthening insert comprises multiple parts including a first surface having a first connecting edge. A second surface is connected to the first surface along the first connecting edge; the second surface has a second connecting edge. The strengthening insert also comprises a third surface connected to the second surface along the second connecting edge; the third surface having a third connecting edge. Lastly, the strengthening insert comprises a fourth surface connected to the third surface along the third connecting edge. The fourth surface has a fourth connecting edge; the fourth surface is connected to the first surface along the fourth connecting edge. 
         [0009]    In practice, the strengthening insert is positioned within an inner surface of a box whereby each upright wall of the box is strengthened and supported by one surface of the strengthening insert. 
         [0010]    An alternative embodiment herein provides a strengthening insert for a corrugated box having four walls and a bottom. The strengthening insert herein comprised three parts. The first part of the strengthening insert is a first surface having a first connecting edge. A second surface is connected to the first surface along the first connecting edge; the second surface has a second connecting edge. Lastly, a third surface is connected to the second surface along the second connecting edge. 
         [0011]    The tri-partitioned insert is placeable within a corrugated box whereby the first surface is positioned about one wall of the corrugated box. The second surface is positioned about the bottom of the corrugated box, and the third surface is positioned about another wall of the corrugated box. 
         [0012]    Another embodiment herein is the combination of a strengthened corrugated box comprising a partially enclosed box having four connected vertical walls and an enclosed bottom. The enclosed bottom of the box is connected to all four connected box vertical walls. Each vertical box wall has an outer surface and an inner surface positioned oppositely to the outer surface. Each vertical wall has a top edge, a bottom edge that is parallel to and extends oppositely to the top edge, and a distance extending between the top edge and the bottom edge of each vertical wall. For this combination, a removable insert is positioned within the corrugated box. This combination of strengthened insert and box may include either the four-sided insert or the tri-partitioned insert. 
     
    
     
       FIGURES 
         [0013]    While the specification concludes with claims particularly pointing out and distinctly claiming the invention, it is believed that the embodiments set forth herein will be better understood from the following description in conjunction with the accompanying figures, in which like reference numerals identify like elements and in which: 
           [0014]      FIG. 1  is a perspective view of a strengthening insert herein held above the opening of a box in which is inserted; 
           [0015]      FIG. 2  provides a perspective view of the strengthening insert and box of  FIG. 1  in which the strengthening insert is positioned within the box; 
           [0016]      FIG. 3  provides a perspective view of an alternative embodiment of the strengthening insert herein; and 
           [0017]      FIG. 4  provides a perspective view of the strengthening insert of  FIG. 3  positioned within a box. 
       
    
    
     DETAILED DESCRIPTION 
       [0018]    The invention herein provides a strengthening insert for placement within a container like a box. The strengthening insert comprises multiple parts including a first surface having a first connecting edge. A second surface is connected to the first surface along the first connecting edge; the second surface has a second connecting edge. The strengthening insert also comprises a third surface connected to the second surface along the second connecting edge; the third surface having a third connecting edge. Lastly, the strengthening insert comprises a fourth surface connected to the third surface along the third connecting edge. The fourth surface has a fourth connecting edge; the fourth surface is connected to the first surface along the fourth connecting edge. 
         [0019]    In practice, the strengthening insert is positioned within an inner surface of a box whereby each upright wall of the box is strengthened and supported by one surface of the strengthening insert. 
         [0020]    An alternative embodiment herein provides a strengthening insert for a corrugated box having four walls and a bottom. The strengthening insert herein comprised three parts. The first part of the strengthening insert is a first surface having a first connecting edge. A second surface is connected to the first surface along the first connecting edge; the second surface has a second connecting edge. Lastly, a third surface is connected to the second surface along the second connecting edge. 
         [0021]    The tri-partitioned insert is placeable within a corrugated box whereby the first surface is positioned about one wall of the corrugated box. The second surface is positioned about the bottom of the corrugated box, and the third surface is positioned about another wall of the corrugated box. 
         [0022]    Another embodiment herein is the combination of a strengthened corrugated box comprising a partially enclosed box having four connected vertical walls and an enclosed bottom. The enclosed bottom of the box is connected to all four connected box vertical walls. Each vertical box wall has an outer surface and an inner surface positioned oppositely to the outer surface. Each vertical wall has a top edge, a bottom edge that is parallel to and extends oppositely to the top edge, and a distance extending between the top edge and the bottom edge of each vertical wall. For this combination, a removable insert is positioned within the corrugated box. This combination of strengthened insert and box may include either the four-sided insert or the tri-partitioned insert. 
         [0023]      FIG. 1  provides a perspective view of insert  5  prior to its insertion into box  14 . Insert  5  is designed to fit, preferably, snugly within the four walls of box  14 . By the term “snugly” it is meant herein that insert  5  fits proximately adjacent to all of the inner walls  16  of box  14  such that each side  6  of insert  5  substantially touches inner walls  16  of box  14 . Importantly, corners  8  of insert  5  align with corners  20  of box  14  when insert  5  sits within box  14 . By such alignment insert  5  provides structural reinforcement to box  14  about its walls  18  and about its corners  20 . 
         [0024]    As shown, insert  5 , which is a four-sided insert herein, is meant to slide within box  14 , fit snugly therein and thereby provide additional structural integrity to walls  18  of box  14 . To achieve that goal, the length and width of insert  5  are slightly less than the length and width of the inside of box  5 . Persons of skill in the art will understand that the objective for insert  5  is to provide a snug fit within box  5  will also allowing insert  5  to be readily removed and placed upon demand by a user. 
         [0025]    Herein, the material of insert  5  preferably matches the material of box  14 . For example, when box  14  is preferably made from one or known types of corrugate, insert  5  shall likewise be made from the same or similar material. Persons of skill in the art will understand that the term “corrugate” or “corrugate box” refer to well known boxes, e.g., file boxes, made worldwide from corrugate materials. Insert  5  and box  14  may also be constructed from non-corrugate materials like all manner of plastics including but not limited to polypropylene, poly esters, the family of PETs, wood, steel, iron, aluminum, copper and all other usable materials suitable for insert  5  and box  14  herein. 
         [0026]      FIG. 2  shows the final fit of insert  5  into box  14  as shown in  FIG. 1 . Preferably, insert  5  sits flush (i.e., snugly) or substantially flush against walls  18  of box  5  in order to lend box  14  added support that translates into additional strength, especially, but not only, compression strength. 
         [0027]    As shown, sides  6  of insert  5  cover at least about one-third to about one-half of the height of inner walls  16 . Sides  6  of insert  5  may cover between about one-half to about three-fourths of the inside of box  14 . Regardless of the height of insert  5  within box  14 , it should be high enough with respect to the height of box  14  to provide the desired structural support. Also, one of skill in the art will recognize that insert  5  may comprise no more than two sides and no more than three sides as alternative embodiments herein, though four side insert  5  as described hereinabove is preferred. 
         [0028]      FIG. 3  shows a perspective alternative embodiment of insert  25  herein which has three sections; a first surface  30 , second surface  35  connected to first surface along line of connection  33 , and third surface  40  connected to surface  35  by line of connection  33 . Similarly to insert  5  of  FIG. 1 , insert  25  is shown held above box  14  prior to its placement into box  14 . In practice, insert  25  is placed into box  14 . Insert  25 , unlike insert  5 , is held adjacent to two vertical box walls and also to the bottom of box  14 . By coverage of the bottom of box  14  with insert  25 , and in particular second surface  35  of insert  25 , all four vertical walls are reinforced at the bottom corners  42  of box  14 . By such reinforcement of corners  42 , corners  20  of box  14  are also at least partially reinforced and thereby strengthened. 
         [0029]    First surface  30  and third surface  40  of insert  25  are held adjacent to the inner surface of box  14 . That is, first surface  30  and third surface  40  are held flush, or substantially flush, against inner walls  16  of box  14 . By such positioning, two inner walls  16  of box  14  are directly reinforced and thereby strengthened. 
         [0030]    Without a strengthening insert  5  being used in a box like a corrugated box of the kind envisioned herein, structural box failure due to compression, most especially, is all but certain over time. Currently, boxes without the strengthening insert herein have a compression strength ranging from about greater than zero pounds to less than about seventy-five pounds. When insert  5  or  25  is added, such strengthening insert provides compression strength ranging from about greater than zero pounds to about less than one-hundred fifty pounds—at last a seventy-five pound compression strength increase. Such compression strength range corresponds to a strengthening insert herein in which the lines of corrugate embedded therein are perpendicular to corners  20 . 
         [0031]    When the lines of corrugate within insert  5  or  25  herein are parallel to corners  20  of box  14 , such insert  5  or  25  provides a compression strength ranging from about greater than zero pounds to about less than two-hundred fifty pounds. 
         [0032]    The inserts  5  and  25  may be constructed from one piece of corrugated materials in which the lines of corrugate are constructed vertically, such lines of corrugated provide a powerful counter-force when a force, such as a weight, is applied to a corrugated box and thus an insert  5  or  25  positioned therein. Alternatively, the strengthening insert  5  or  25  may be constructed such that the lines of corrugate are constructed horizontally and therefore exist perpendicularly to each wall within box  14 . 
         [0033]    The insert  5  or  25  herein may be constructed from corrugated materials, plastic, wood, foam core glass, metal and other suitable materials. 
         [0034]    This written description uses at least one example to disclose the invention, including the best mode, and also to enable any person skilled in the art to make and use the invention. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal language of the claims.