초록 ▼

A plastic container of an essentially rectangular shape comprises a bottom, upright side walls connecting to the bottom and having essentially equal thicknesses, and an outward beaded top edge on which the edge of a cover which closes the container can be fixed. Each upright side wall is divided in

A plastic container of an essentially rectangular shape comprises a bottom, upright side walls connecting to the bottom and having essentially equal thicknesses, and an outward beaded top edge on which the edge of a cover which closes the container can be fixed. Each upright side wall is divided in the vertical direction of the container into two interconnecting side wall parts, the lower side wall part being made curved towards the inside of the container (concave), and the upper side wall part being made curved towards the outside of the container (convex), and the upper and lower side wall parts being connected to each other by an intermediate part. This produces a very stable container, which is suitable for storage and transportation of sensitive powdered materials.

대표청구항 ▼

[ What is claimed is:] [1.]1. Plastic container comprising a bottom, four interconnected upright sidewalls connecting to the bottom to form a substantially rectangular shape having four corners, said upright side walls terminating with an outward beaded top edge which interengages with the edge of a

[ What is claimed is:] [1.]1. Plastic container comprising a bottom, four interconnected upright sidewalls connecting to the bottom to form a substantially rectangular shape having four corners, said upright side walls terminating with an outward beaded top edge which interengages with the edge of a cover for closing the container, each upright side wall being divided in the vertical direction of the container into a lower side wall part and an upper side wall part, the upper and the lower side wall parts being connected to each other by an intermediate side wall part, said upper, lower, and intermediate side wall parts being below the beaded top edge, wherein the lower side wall part is curved towards the inside of the container between opposed corners of said side wall part, and the upper side wall part is curved towards the outside of the container between opposed corners of said side wall part, said curves beginning and ending immediately adjacent said corners, and wherein the intermediate side wall part forms a ledge which continuously bridges the upper and lower side walls.