Patent ID: 6375022
Filing Date: 2002-04-23
Classification: B65D,Y10S

Abstract:
A closure for a container having a side wall and an open top, said closure comprising:a shell having a top wall dimensioned for disposition adjacent the open top of a container, an outer skirt depending downwardly from said top wall and dimensioned for telescoped engagement around the side wall of a container, an inner skirt depending downwardly from said top wall and spaced inwardly from said outer skirt, said inner skirt being dimensioned for telescope engagement in the open top of a container, a barrier support surface in said top wall of said shell between said inner skirt and said outer skirt, apertures in said top wall of said shell extending therethrough at locations spaced inwardly from said inner skirt, and a disphragm support surface spaced inwardly from said inner skirt and extending between said inner skirt and said aperture; an elastomeric diaphragm surrounded by and engaged with said inner skirt of said shell, wherein portions of said elastomeric diaphragm being seated tightly against said diaphragm support surface of said top wall of said shell; and a barrier cup formed from a vapor barrier material, said barrier cup having a bottom wall extending across portions of said inner skirt remote from said top wall of said shell, a side wall extending from said bottom wall and disposed around said inner skirt, and a top flange extending outwardly from said side wall of said barrier cup and disposed adjacent said top wall of said shell, said barrier cup being hermetically sealable between a container and said shell, whereby said barrier support surface is disposed in face-to-face engagement with said top flange of said barrier cup.