Patent ID: 8118165
Filing Date: 2012-02-21
Classification: B65D

Abstract:
1. A blank of foldable material to form a sleeve, comprising: pull tab, catch and slot panels for forming respective grip and catch portions of a latch and a wall of the sleeve, wherein the pull tab and the slot panels comprise two substantially parallel sides and two substantially parallel ends which are substantially perpendicular to the sides, the pull tab panel connected to the catch panel by a fold line, the catch panel comprises ends each having a first part which tapers outward from the first fold line to a locking point and a second part which tapers inward to a corner stop, and wherein the first part and the second part of each of the ends of the catch panel are symmetrical, a slot in the slot panel parallel to the sides of the slot panel, the slot comprising a cut-out defined by spaced apart parallel short and long sides wherein the short side is closer to the catch panel and wherein the slot has a substantially trapezoidal shape with non-parallel diverging ends being equal in length and is expandable by a slot flap formed by slit extensions in the slot panel, the slit extensions extending in line with the diverging ends beyond the long side of the cut-out to a flap flex line parallel to the sides of the cut-out; and back cover, front, binding, and middle panels for forming respective, back cover, front, top, and dividing walls of the sleeve, wherein the back cover, front, binding and middle panels comprise two substantially parallel sides and two substantially parallel ends which are substantially perpendicular to the sides, wherein the corner stop is located where the catch panel joins the back cover panel, the back cover panel is connected to the front panel by a second fold line, the front panel is connected to the binding panel by a third fold line, the binding panel is connected to the slot panel by a fourth fold line, the slot panel is connected to the middle panel by a fifth fold line; the blank being foldable to form the sleeve with the middle panel dividing the recess and the back cover panel covering a portion of the slot panel, and; the blank being foldable to form the sleeve defining a recess open at ends thereof and the catch panel can be latched in the slot such that the locking points releaseably engage ends of the slot with the pull tab panel overlying the catch panel and protruding outwardly from the slot.