초록

A closure has a plurality of generally U-shaped stacking lugs. A package utilizing the closure has a bottom rim with a conformation which effectively mates with the stacking lugs to provide a stackable package.

대표청구항 ▼

A closure comprising: a central diaphragm; a first slanting wall circumferentially continuous with the central diaphragm and extending outwardly and upwardly therefrom; an annular wall circumferentially continuous with an upper portion of the first slanting wall and extending generally upwardly ther

A closure comprising: a central diaphragm; a first slanting wall circumferentially continuous with the central diaphragm and extending outwardly and upwardly therefrom; an annular wall circumferentially continuous with an upper portion of the first slanting wall and extending generally upwardly therefrom; an annular rim wall circumferentially continuous with an upper portion of the annular wall and extending generally outwardly and upwardly therefrom to form a generally upwardly and inwardly concave surface; a top rim wall circumferentially continuous with an upper portion of the annular rim wall and extending generally outwardly therefrom; and a skirt wall circumferentially continuous with an outer portion of the top rim wall and extending generally downwardly therefrom; wherein the first slanting wall and the annular wall are interrupted by a plurality of projections, each of said plurality of projections having an upper surface portion forming a generally concave surface concavely continuous with a respective portion of the generally concave surface formed by the annular rim wall, said concave surface having an outer upwardly opening surface portion defined at least in part by the annular rim wall and an inner upwardly opening surface portion defined at least in part by an upwardly extending shoulder portion of each projection.