Patent ID: 7740163

Claim:
A carton, comprising a plurality of side panels hingedly joined together by respective first lines; a plurality of end panels, each end panel being hingedly joined along a hinged edge thereof to one of said side panels, respectively, by a respective second line, wherein said end panels each having a free edge opposite said hinged edge and a locking mechanism comprising a plurality of notches formed in said free edge of each panel of at least two opposed pairs of the end panels, each of the notches being positioned in the free edge such that when the side panels are folded to form the carton and the end panels are folded over, one of the notches from each of the end panels interlocks with one of the notches from an adjacent one of the end panels to form notch locking junctions, and at least one diagonal line extending from at least one edge of at least one of said notches in at least one set of opposing said end panels to an outer corner formed by an intersection of one of the respective first lines closest to a respective at least one of said notches and the respective second line to facilitate interlocking of the notches.