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An elongate structure that includes a hollow outer portion and a hollow inner portion disposed within the hollow outer portion. The hollow outer portion includes a first outer side surface, a second outer side surface, and a third outer side surface that define first, second and third intersecting p

An elongate structure that includes a hollow outer portion and a hollow inner portion disposed within the hollow outer portion. The hollow outer portion includes a first outer side surface, a second outer side surface, and a third outer side surface that define first, second and third intersecting planes respectively. The three intersecting planes form three dihedral angles whose sum is about 180°. The hollow inner portion is in contact with each inner side of the hollow outer portion. Further, the hollow inner portion includes at least one panel that extends between each inner side of the hollow outer portion to thereby form hollow inner triangular channels.

대표청구항 ▼

1. An elongate structure comprising: a hollow outer portion formed of sheet material; anda hollow inner portion formed of sheet material;wherein the hollow outer portion and the hollow inner portion are integrally formed from a single piece of sheet material,wherein the hollow outer portion includes

1. An elongate structure comprising: a hollow outer portion formed of sheet material; anda hollow inner portion formed of sheet material;wherein the hollow outer portion and the hollow inner portion are integrally formed from a single piece of sheet material,wherein the hollow outer portion includes at least a first outer side surface that defines a first plane, a second outer side surface that defines a second plane, and a third outer side surface that defines a third plane,wherein the first plane intersects with the second plane at a first dihedral angle, the second plane intersects with the third plane at a second dihedral angle, and third plane intersects with the first plane at a third dihedral angle,wherein the sum of the first dihedral angle, the second dihedral angle and the third dihedral angle is about 180°,wherein the hollow inner portion is disposed within the hollow outer portion,wherein the hollow inner portion comprises a plurality of elongate panels that cooperate to define an inner hexagonal channel,wherein the hollow inner portion contacts a first inner side of the hollow outer portion opposite the first outer side surface, a second inner side of the hollow outer portion opposite the second outer side surface, and a third inner side of the hollow outer portion opposite the third outer side surface, andwherein one of the plurality of elongate panels of the hollow inner portion extends between the first inner side of the hollow outer portion and the second inner side of the hollow outer portion so as to define a first hollow inner triangular channel, and another one of the plurality of elongate panels of the hollow inner portion extends between the second inner side of the hollow outer portion and the third inner side of the hollow outer portion so as to define a second hollow inner triangular channel. 2. The elongate structure according to claim 1, wherein a yet another one of the plurality of elongate panels of the hollow inner portion extends between the third inner side of the hollow outer portion and the first inner side of the hollow outer portion so as to define a third hollow inner triangular channel. 3. The elongate structure according to claim 1, wherein the elongate structure includes a first end, and wherein an end cap is secured to the elongate structure at the first end. 4. The elongate structure according to claim 1, wherein the elongate structure includes a first end, and wherein the first end is closed off by a plurality of overlapping folded flaps that extend from the hollow outer portion. 5. The elongate structure according to claim 1, wherein the first dihedral angle is about 60°, the second dihedral angle is about 60° and the third dihedral angle is about 60°. 6. The elongate structure according to claim 1, wherein two of the first dihedral angle, the second dihedral angle and the third dihedral angle are about 45°. 7. The elongate structure according to claim 1, wherein the single piece of sheet material comprises a plurality of plies. 8. The elongate structure according to claim 1, wherein the single piece of sheet material comprises paperboard. 9. The elongate structure according to claim 1, wherein at least one strip of adhesive bonds overlapping plies of the hollow outer portion together. 10. A pallet comprising: a deck having a top side and a bottom side; anda plurality of pallet runners secured to the bottom side of the deck;wherein at least one of the plurality of pallet runners is an elongate structure according to claim 1. 11. The pallet according to claim 10, wherein the deck and the plurality of pallet runners are formed of paperboard. 12. A substantially flat piece of sheet material provided with a plurality of creases that define fold lines, wherein when the substantially flat piece of sheet material is folded on the plurality of creases an elongate structure according to claim 1 is formed. 13. The substantially flat piece of sheet material according to claim 12, wherein at least one strip of adhesive bonds together overlapping plies that, when substantially flat piece of sheet material is folded, form the hollow inner portion. 14. A method of forming an elongate structure comprising: providing a substantially flat piece of sheet material according to claim 12; andfolding the substantially flat piece of sheet material along the fold lines to form the elongate structure. 15. The method according to claim 14, wherein the elongate structure includes a first end, and wherein a plurality of flaps extend from the hollow outer portion, and wherein the method further comprises closing off the first end by folding the plurality of flaps in an overlapping manner. 16. An elongate structure comprising: a hollow outer portion formed of sheet material; anda hollow inner portion formed of sheet material;wherein the hollow outer portion and the hollow inner portion are each formed from separate, single pieces of sheet material,wherein the hollow outer portion includes at least a first outer side surface that defines a first plane, a second outer side surface that defines a second plane, and a third outer side surface that defines a third plane,wherein the first plane intersects with the second plane at a first dihedral angle, the second plane intersects with the third plane at a second dihedral angle, and third plane intersects with the first plane at a third dihedral angle,wherein the sum of the first dihedral angle, the second dihedral angle and the third dihedral angle is about 180°,wherein the hollow inner portion is disposed within the hollow outer portion,wherein the hollow inner portion comprises a plurality of elongate panels that cooperate so as to define an inner hexagonal channel,wherein the hollow inner portion contacts a first inner side of the hollow outer portion opposite the first outer side surface, a second inner side of the hollow outer portion opposite the second outer side surface, and a third inner side of the hollow outer portion opposite the third outer side surface, andwherein one of the plurality of elongate panels of the hollow inner portion extends between the first inner side of the hollow outer portion and the second inner side of the hollow outer portion so as to define a first hollow inner triangular channel, and another one of the plurality of elongate panels of the hollow inner portion extends between the second inner side of the hollow outer portion and the third inner side of the hollow outer portion so as to define a second hollow inner triangular channel. 17. The elongate structure according to claim 16 wherein the separate, single pieces of sheet material used to form both the hollow outer portion and the hollow inner portion comprise paperboard.