Push pack

Claim 1

A push pack for cigarettes or the like, comprising in combination, a rectangular box-like carton made of folded, bendable paper around a quantity of enclosed cigarettes or the like, and a tubular sleeve in which said carton is slidable, said carton having an upwardly pivotable lid at one upper end corner thereof for access into said carton, and a mechanism for opening and closing said lid automatically when said carton is slid back and forth inside said sleeve, said lid being formed by an angular slit on each opposite side wall of said carton and an interconnecting slit across a top of said carton connecting upper ends of said angular slits, while a fold line spaced below the top edge lying transversely across an end wall of said carton intersects lower ends of said angular slits and forms a movable pivot for said lid; said lid accordingly comprising a top wall, an end wall at right angles thereto and opposite triangular side walls along side edges of said lid top, and pivot means comprising a tape with adhesive on one side, a transverse fold across said tape forming opposite end halves of said tape, said tape transverse fold being aligned adjacent to a corner of said lid formed between said lid top wall and said lid end wall, one of said tape end halves being adhered to an end wall of said sleeve, said tape transverse fold forming a stationary pivot located at the upper edge of said lid side wall, said pivot means acting as a hinge means for pivotally connecting the lid at the top edge of its end wall to the top edge of the sleeve end wall and for preventing sliding movement of the lid with respect to the sleeve, whereby upward sliding movement of the carton within the sleeve causes a buckling of the end wall of the carton whereby the movable pivot follows an arcuate path about said stationary pivot to thereby snap open said lid.