One piece simplex carton

Claim 1

In a one piece carton having tray and cover portions formed from a unitary blank of foldable sheet material such as paperboard, the combination of: a. a tray portion including a bottom wall, opposed pairs of front and rear side walls and end walls upstanding therefrom, and gusset means interconnecting said side and end walls at the corners of said tray portion to form a box-like structure open at the top; b. said end walls each including an outer panel foldably connected at its lower edge to a side edge of said bottom wall and an inner panel foldably connected at its upper edge to an upper edge of said outer panel and extending downward toward said bottom wall; c. said front side wall including an outer panel foldably connected at its lower edge to a front edge of said bottom wall and an inner panel foldably connected at its upper edge to an upper edge of said outer panel and extending downward toward said bottom wall and being adhesively secured to said outer panel; d. said gusset means each including a pair of gusset elements foldably connected to adjacent edges of a side and end wall respectively, at a corner of said tray portion; e. the gusset elements which are connected to said end walls being folded inwardly thereagainst and having extensions which are adhesively secured between the inner and outer panels of said end walls; f. said end wall gusset extensions being long enough to have end portions which extend beyond the upper edges of said front and rear side walls when the carton is in a collapsed condition to facilitate the application of adhesive; g. said rear side wall comprising a single panel being foldably connected at its lower edge to a rear edge of said bottom wall; h. said cover portion including a top wall foldably connected at its rear edge to an upper edge of said rear side wall, a front flap, and a pair of side flaps foldably connected at their upper edges to front and side edges of said top wall and disposed to lie against the surfaces of said front side wall and said end walls respectively, when the carton is closed.