Patent ID: 7971773

Claim:
A carton for containing a dispensable material, the carton comprising: a plurality of panels that extends at least partially around an interior of the carton, the plurality of panels comprising a first panel and a second panel foldably connected to the first panel at a fold line; a spout at least partially formed in the first panel and the second panel, the spout being moveable between a closed position substantially preventing removal of dispensable material from the carton and an open position allowing removal of the dispensable material from the carton; and the spout comprising a first spout panel formed from a portion of the first panel and a second spout panel formed from a portion of the second panel, and the second spout panel being foldably connected to the first spout panel at at least a portion of the fold line, the second spout panel comprises a retention tab, and the second panel comprises an opening adjacent the retention tab, the opening comprising an upper curved side edge, a lower curved side edge, a first end edge forming a stopper surface at one end of the upper curved side edge and the lower curved side edge, and a second end edge forming a side edge of the retention tab at the other end of the upper curved side edge and the lower curved side edge, the upper curved side edge and the lower curved side edge being generally parallel, the retention tab being in slidable engagement with the upper curved side edge in said closed position of said spout and during movement of said spout from said closed position to said open position of said spout.