# Patent

## Title
Six-sided corrugated rollover cushion

## Abstract

A rollover shipping cushion is presented. The cushion is formed by folding, in a specific manner, a single sheet of die-cut corrugated fiberboard to create the cushion. When properly folded, the cushion includes a central shipping cavity that is surrounded by shock-absorbing tubes on all six sides of the central shipping cavity.

## Background
BACKGROUND OF THE INVENTION
1. Technical Field
The present invention relates in general to the field of shipment packaging, and in particular to corrugated fiberboard packing. Still more particularly, the present invention relates to a single piece of corrugated fiberboard that, when folded, creates a six-sided cushion for fragile shipments.
2. Description of the Related Art
Light and fragile products, including electronic equipment, are typically shipped from a manufacturer to a customer or distributor via a common carrier. The products must therefore be packaged to prevent being damaged in transit from physical shock (jarring) caused by being dropped, jostled, etc. The force of such physical shock can be as much as 70 g's.
One method of protecting such equipment is to encase it with shock absorbing material such as Styrofoam® “peanuts.” However, such systems are messy, as the peanuts' light weight makes them prone to being scattered both during packing at the manufacturer's site as well as unpacking at the customer's site. Furthermore, Styrofoam® peanuts are not environmental friendly, since Styrofoam® is not biodegradable. Of even greater engineering significance is that peanuts are inconsistent in their protection against shock. That is, peanuts can shift about during transit, such that different areas within a shipping container are afforded unpredictably varying levels of impact protection.
Another method of protecting such equipment is to engineer a packing cushion, either from fabricated foam or molded material. Fabricated foam (such as polyurethane) is hand or die cut, and then assembled (typically using heat welding) to create a custom shaped protector. Fabricated foam is thus both labor intensive (in assembly steps) and materiel expensive (in the cost of component shapes and scrap material inherent in the assembly process). Molded material (such as polystyrene) is formed by a mold that is specific to the shape of the product being shipped. Molded materials are thus also both labor intensive (in creating and using the molds), equipment expensive (in the molding machines), and materiel expensive (cost of the molding material). Like the use of dunnage such as peanuts, fabricated foam and molded material are also environment unfriendly.
SUMMARY OF THE INVENTION
In response to the shortcomings of the prior art system described, the present invention is thus directed to a rollover shipping cushion. The cushion is formed by folding, in a specific manner, a single sheet of die-cut corrugated fiberboard to create the cushion. When properly folded, the cushion includes a central shipping cavity that is surrounded by shock-absorbing tubes on all six sides of the central shipping cavity.
The above, as well as additional purposes, features, and advantages of the present invention will become apparent in the following detailed written description.



BRIEF DESCRIPTION OF THE DRAWINGS
The novel features believed characteristic of the invention are set forth in the appended claims. The invention itself, however, as well as a preferred mode of use, further purposes and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying drawings, where:
FIG. 1a depicts a single piece of corrugated fiberboard in an unfolded condition after having been die-cut to create the depicted shape and folding edges;
FIGS. 1b-1n illustrate the single piece of corrugated fiberboard in various stages of being folded to form a rollover shipping cushion;
FIG. 2a depicts a top view of the completed rollover shipping cushion; and
FIG. 2b illustrates a bottom view of the completed rollover shipping cushion.



DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
With reference now to the figures, and in particular to FIG. 1A, a drawing is presented of an unfolded corrugated cushion 100. Corrugated cushion 100 includes a central sheet 102, which includes a bottom tube slot 104. About central sheet 102 are side assemblies 106a-b and end assemblies 108a-b. Side assemblies 106a-b each have a respective side tube sheet 110a-b, side tube support tabs 112a(1,2)-b(1,2), bottom tube sheets 114a-b, and bottom tube locking tabs 116a-b. End assemblies 108a-b each have a respective top tube sheet 118a-b, top tube locking tabs 120a(1,2)-b(1,2), top tube end tabs 122a-b, and top lid sheets 124a-b. Adjacent the top lid sheets 124 are side tube support tab locking slots 132.
Representative steps taken to create an assembled rollover cushion 200 (shown in FIGS. 2A-B) are presented in FIGS. 1B-N. With reference then to FIG. 1B, bottom tube sheet 114a is folded upwards and then back downwards through bottom tube slot 104a (FIG. 1C) until bottom tube locking slot 126 is exposed below a cushion bottom 130 side of corrugated cushion 100 (FIG. 1D). Bottom tube sheet 114a is roll-folded until bottom tube locking tab 116a locks into bottom tube locking slot 126a to form an assembled bottom tube 128a (FIG. 1E).
After bottom tube 128a is assembled, side tube sheet 110a has the shape shown in FIG. 1F on the top side 144 of unfolded corrugated cushion 100, in which side tube support tabs 112a-1,2 are extended as shown. Side tube support tabs 112a-1,2 are then folded downward as shown to lock into their respective side tube support tab locking slots 132a-1,2 to finish the formation of an assembled side tube 134a (FIG. 1G).
The folding process just described is repeated for bottom tube sheet 114b to create assembled bottom tube 128a (shown in FIG. 1H along with protruding side tube support tabs 112a-1,2 and 112b-1,2), and assembled side tube 134b shown in FIG. 1I
With reference now to FIG. 1J, end assembly 108b is then folded upwards. An end tube locking tab 136b is punched out from end assembly 108b (FIG. 1K). End assembly 108b is laid down and end tube locking tab 136b is folded down to complete the formation of an end tube 138b (FIG. 1L). End assembly 108b is rolled up to form a top tube 140b, which includes top tube locking tabs 120b-1,2 (FIG. 1M), which is locked down into top tube locking slots 146a-b. 
The steps just described are repeated using end assembly 108a to form top tube 140a shown in FIG. 2a. As show in the top view of assembled rollover cushion 200 in FIG. 2a, rollover cushion 200 has top tubes 140a-b on top, side tube 134a on one side and side tube 134b on another side, end tube 138a on one end and end tube 138b on an opposing end. As seen in the bottom view of assembled rollover cushion 200 in FIG. 2b, rollover cushion 200 has two bottom tubes 128a-b on the cushion bottom 300, as well as side tube support tabs 112a,b-1,2 that provide additional shock protection.
With reference again to FIG. 2a, shipping cavity 142 provides a cushioned and centrally positioned space in which physical-shock-sensitive items can be placed for shipment. The assembled rollover cushion 200, with the physical-shock-sensitive item within shipping cavity 142, is then placed snugly inside another external shipping box (not shown). If and when the external shipping box is struck, the assembled rollover cushion 200 provides cushioning that flattens out (decreases amplitude while extending the length of) a shock wave caused by the external shipping box being struck. Thus, the shipped item is in a semi-suspended position that is protected from such physical-shock waves.
In a preferred embodiment, the described rollover cushion 200 (and its precursor unfolded corrugated cushion 100) is made of a corrugated material, such as fiberboard, cardboard, pulp board, corrugated plastic, etc., which is easily foldable and die-cut. Since rollover cushion 200 is created from a single stock item (unfolded corrugated cushion 100), inventory of packing materials is simplified and made cheaper. Likewise, when unpacking a shipped item, rollover cushion 200 is a single piece that is easy to discard or unfold for future use.
As depicted in the drawings and attendant descriptions, in a preferred embodiment the present invention thus provides a rollover cushion that includes a shipping cavity, two top tubes, two bottom tubes, first and second side tubes and first and second end cushions that are formed when a single piece of material is folded in a prescribed manner. When the single piece of material is folded in the prescribed manner, the shipping cavity has dimensions such that an item being contained within the rollover cushion is abutted against a first side of a planar element on every side of the item being contained. Furthermore, when folded, the rollover cushion is such that every planar element has a folded cushion on a second side of each planar element, such that the combined folded cushions provide physical shock protection in all three axes.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.

## Claims

1. A rollover shipping cushion comprising:
a single piece of foldable material composed of:
a central sheet;
a first end assembly and a second end assembly attached to the central sheet, wherein each end assembly includes:
a top tube sheet composed of:
a first tab and a second side extending away from a first side and a second side of the top tube sheet, and
an end tab extending away from an end of the top tube sheet; and

a top lid sheet;

a first side assembly and a second side assembly attached to the central sheet, wherein each side assembly includes:
a bottom tube sheet having a bottom tube locking tab, wherein the bottom tube sheet has a width that is narrow enough to slide through a bottom tube slot in the central sheet, and
a side tube sheet having a first support tab and a second support tab;


wherein, when folded, the single piece of foldable material forms a rollover shipping cushion that includes:
a first top tube and a second top tube formed from top tube sheets of the first and second end assemblies,
a first bottom tube and a second bottom tube formed from bottom tube sheets of the first and second side assemblies,
a first side tube and a second side tube formed from side tube sheets of the first side assembly and the second side assembly,
a first end cushion and a second end cushion formed by top lid sheets of the first end assembly and the second end assembly folding around ends of the first and second side tubes, and
a central shipping cavity formed by:
the central sheet,
the first and second side tubes, and
the top lid sheets wrapping across ends of the first and second side tubes.

2. The rollover shipping cushion of claim 1, wherein the cushion is made of corrugated fiberboard.

3. The rollover shipping cushion of claim 2, wherein the rollover shipping cushion is sized to fit snugly within a shipping box, and wherein the rollover shipping cushion provides a space cushion between an item within the shipping cavity and all corners of the shipping box.