Patent ID: 8746545

Claim:
A drink cup comprising a conic side wall formed of a stiff but flexible material, and a bottom that closes off a lower end of said conic side wall; the conic side wall being formed with left and right fold-down closure flaps at an upper end of the conic side wall; each of said closure flaps being in the form of a secant ogive having a flat end at a proximal side of the drink cup with the flat ends of the closure flaps being spaced apart to define a drink spout; and the closure flaps each having a pointed end, the pointed ends meeting one another at a common point at a distal side of the cup and diametrically opposite said drink spout, wherein each of said left and right closure flaps has an arcuate upper edge following a continuous circular arc from an upper edge of the respective said vertical edge to said common point on the distal side of the drink cup, and wherein said left and right closure flaps also each have an arcuate fold line extending in a continuous circular arc from a lower end of the flat end of the associated flap to the common point at the distal side of the cup, and wherein the upper edges of the left and right closure flaps and the arcuate fold lines of said left and right closure flaps all have radii of curvature equal to one another, such that when the closure flaps are pushed down each of the closure flaps reaches across to an opposite side of the conic side wall with one of the right and left closure flaps lying atop and substantially coextensive with the other of the closure flaps, and with the arcuate upper edge of each closure flap lying substantially along the arcuate fold line of the other closure flap.