Self-locking stackable tapered container with partial top structure

• US 8,070,053 B2
• Filed: 07/25/2007
• Issued: 12/06/2011
• Est. Priority Date: 09/27/2002
• Status: Active Grant

• Current Assignee: International Paper Company
• Original Assignee: International Paper ZAO (Sylvamo Corp.)
• Inventors: Fry, Stanley L
• Primary Examiner(s): ELKINS, GARY E
• Application Number:
  US11/881,070
• Publication Number:
  US 20070267469A1
• Time in Patent Office: 1,595 Days
• Field of Search: 229/170, 229/172, 229/174, 229/175, 229/176, 229/177, 229/178, 229/179, 229/915, 229/918, 229/919, 206/509
• US Class Current: 229/174
• CPC Class Codes: B65D 5/0015 the container being formed by folding up portions connected to a central panel
• CPC Class Codes: B65D 5/0035 the ledges being located between side walls and doubled-over extensions B65D5/0025 takes precedence
• CPC Class Codes: B65D 5/22 held erect by extensions of one or more sides being doubled-over to enclose extensions of adjacent sides
• CPC Class Codes: B65D 5/28 with extensions of sides permanently secured to adjacent sides, with sides permanently secured together by adhesive strips, or with sides held in place solely by rigidity of material
• CPC Class Codes: Y10S 229/918 Corner construction

Abstract

A stackable container for carrying produce. The container has tapered side walls or end walls to aid in the stacking of like containers. Also, the container has locking flaps that allow the container to be erected manually and without the need for fasteners. Further, at least one tapered wall of the container has a reinforcement flap that creates a partial top structure in the upper part of the container that helps prevent bulging of the walls. The reinforcement flap also creates doubled stacking tabs and diagonal corner posts that aid in the stacking of like containers.

Claims

1. A container, comprising:

a base panel;

two opposing end walls connected to the base panel;

two opposing side walls connected to the base panel;

a side flap connected to opposing sides of each side wall or opposing sides of each wall, each side flap comprising a lock recess along a top edge thereof;

locking flaps connected to the end walls or the side walls by at least one pair of lock hinge assemblies, wherein each locking flap folds inwardly to sandwich at least one of the side flaps adjacent thereto between the locking flap and the end wall or the side wall adjacent thereto and further, wherein each locking hinge assembly locks into the lock recess of the adjacent side flap;

a reinforcement flap connected to at least one of the side walls or at least one of the end walls, wherein the reinforcement flap lies against an inner surface of the side wall or end wall to which the reinforcement flap is connected and the reinforcement flap further comprises at least one corner flap foldably attached to at least one opposing edges thereof;

at least one of the locking flaps comprises at least one lock slot disposed along an outer edge thereof;

at least one lock tab projects from a side edge of the at least one corner flap; and

the at least one lock tab extends into the at least one lock slot.

2. The container according to claim 1, wherein at least one of the opposing end walls is connected to the base panel at substantially a 90°

angle.

3. The container according to claim 1, wherein at least one of the two opposing side walls is connected to the base panel at an angle that is less than 90°

.

4. The container according to claim 1, wherein the reinforcing flap lies flush against an inner surface of the side wall or end wall to which the reinforcement flap is connected.

5. The container according to claim 1, wherein at least one of the corner flaps extends diagonally toward at least one of the locking flaps.

6. The container according to claim 1, wherein the base panel further comprises at least one stacking slot.

7. The container according to claim 6, wherein the at least one stacking slot is cut into the base panel.

8. The container according to claim 6, wherein the at least one stacking slot is positioned to accept at least one stacking tab of a sub-adjacent container.

9. The container according to claim 6, wherein the at least one stacking slot is positioned adjacent to at least one of the side walls or at least one of the end walls.

10. The container according to claim 6, wherein at least one of the side walls or at least one of the end walls has a first thickness and further comprises a crushed area, the crushed area having a second thickness that is less than the first thickness, and a bottom of the crushed area is adjacent to the at least one stacking slot.

11. The container according to claim 6, further comprising a clap tab disposed on the base panel adjacent to the at least one stacking slot, the flap tab comprising a contact edge disposed adjacent and parallel to the at least one stacking slot.

12. The container according to claim 1, wherein at least one of the side flaps further comprises a bottom edge that angles divergently upward from the bottom edge of at least one of the side walls or at least one of the end walls.

13. The container according to claim 1, wherein a bottom tab projects from a bottom edge of at least one of the side flaps;

at least one tab slot is disposed on the base panel adjacent to at least one of the end walls or at least one of the side walls; and

the bottom tab extends into the at least one tab slot.

14. The container according to claim 1, wherein the side walls having a width equal to or greater than the width of upper edges of the end walls.

15. The container according to claim 1, wherein the reinforcement flap is connected to at least one of the side walls or at least one of the end walls by at least one stacking tab.

16. The container according to claim 15, wherein the reinforcement flap is connected to at least one of the side walls or at least one of the end walls by at least one doubled stacking tab.

17. The container according to claim 1, further comprising a second reinforcement flap connected to at least one of the side walls or at least one of the end walls and opposite the first reinforcement flap, wherein the second reinforcement flap lies against an inner surface of the side wall or end wall to which the second reinforcement flap is connected.

18. The container according to claim 17, wherein the second reinforcement flap is connected to at least one of the side walls or at least one of the end walls by at least one stacking tab.

19. The container according to claim 18, wherein the second reinforcement flap is connected to at least one of the side walls or at least one of the end walls by at lease one doubled stacking tab.

20. The container according to claim 1, wherein

the wide walls have a width equal to or greater than the width of upper edges of the end walls;

the reinforcement flap is connected to one of the opposite side walls; and

the other opposite side wall comprises a window having a size and a shape so as to provide visibility and a breathing hole for items that may be held in the container.