US 5,437,388 AGranted

Container

AssigneeMacMillan Bloedel Packaging

InventorsFrederick W. Bartelt, David F. Gillard, James G. Harbison, Achim R. Lorenz

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Abstract

The container is formed preferably from three telescoping sleeves, the inner sleeve having at least two sets of adjacent walls with the center wall of each set being provided with a wide flap that extends beyond the sides of the center wall and is formed with a stepped lateral edge on each of its sides. These flaps being foldable into a position substantially perpendicular to the axis of the sleeve and the steps cooperate with edges of walls adjacent the sets to hold the sleeve in its desired cross sectional shape. A second sleeve surrounds the first sleeve and has alternating long and short side wall with long side walls in face to face relationship with the steps or other edges on the flaps. Preferably, a substantially rectangular cross section sleeve surrounds the two inner sleeves and the inner periphery of the rectangular cross section sleeve at its corresponding ends will have a width substantially equal to the width of the wide flaps.

Claims8

Dependent claims

A container comprising an inner sleeve formed by a plurality of foldably interconnected walls, at least one group of three adjacent of said walls composed of a center wall and a pair of laterally adjacent walls positioned one on each side of the center wall, a flap foldably connected to said center wall along one end thereof, said flap having a width wider than said center wall and extending symmetrically laterally on opposite sides of said center wall, a step formed on each lateral edge of said flap, said set of three walls being shorter than immediately adjacent walls of said inner sleeve positioned on the sides of said laterally adjacent walls remote from said center wall thereby to provide a pair of abutment edges one formed at the end of each of said immediately adjacent walls by an edge of each of said immediately adjacent walls adjacent to said step and flap, said the widths of each of said laterally adjacent walls and the angles between the walls of said group of walls being correlated to ensure that an edge formed by each of said steps is in a substantially abutting relationship with its respective adjacent of said abutment edges when said sleeve is erected and said flap is folded into a position substantially perpendicular to the axis of said sleeve.

Dependencies are inferred from the claim text.