Container closure structure

Claim 1

In a closure structure for a container formed from a cut and scored blank of paperboard or the like: a. opposed pairs of main and side panels hingedly connected to form a tube of rectangular transverse cross section; b. a first closure flap connected along a line of fold to one of said main panels and foldable to position in the plane defined by one end of said tube; c. said first closure flap having a V-shaped panel therein defined by score lines commencing near said line of fold and diverging toward the ends of a rectangular shaped cut-out in the distal edge thereof; d. a pair of intermediate closure flaps each joined along a fold line to a correlative side panel and foldable into position overlapping said first closure flap; e. each of said intermediate closure flaps being so configured as to maintain said V-shaped panel uncovered; f. a fourth closure flap connected along a fold line to the other of said main panels and foldable to closing position; g. said fourth closure flap having converging side edges and having a distal portion adapted to enter beneath said first closure flap between the V-shaped panel thereof; h. said V-shaped panel being capable of being flexed out of the plane of said first closure flap to facilitate entrance of the distal portion of the fourth closure flap.