Food container and cover therefor

Claim 2

A paperboard cover for a container, said cover having an outer surface, an inner surface, and a marginal outer edge; a first cut score rupturable line formed in said outer surface and having a depth which is approximately one half the thickness of said cover, said first cut score line being inwardly offset from said marginal outer edge of said cover and defining the outer surface of a removable central portion of said cover; a second cut score rupturable line formed in said inner surface and having a depth which is approximately one half of the thickness of said cover, said second cut score line being inwardly offset from said first cut score line and defining the inner surface of said removable central portion of said cover; a pull tab connecting said first and second cut score lines to facilitate manual removal of said central portion of said cover; and a stress relieving interrupted non-rupturable perforated line formed in said cover between said first cut score line and said marginal outer edge of said cover, said interrupted non-rupturable perforated line surrounding said first cut score line, providing for flexibility of the cover between said non-rupturable perforated line and said rupturable lines.

Claim 3

The paperboard cover of claim 1, wherein said interrupted non-rupturable perforated line is formed in said inner surface of said cover.

Claim 4

A paperboard cover for a container, said cover having an outer surface, an inner surface, and a marginal outer edge; rupturable means in said cover defining a central removable portion of said cover; and a stress relieving non-rupturable interrupted perforated line on said cover interposed between said rupturable means and said outer marginal edge and completely surrounding said rupturable means providing for flexibility of the cover between said non-rupturable perforated line and said rupturable means to prevent premature rupture of said rupturable means.

Claim 5

A paperboard cover for a container, said cover having an outer surface, an inner surface, and a marginal outer edge; rupturable means in said cover defining a central removable portion of said cover; and a stress relieving non-rupturable interrupted perforated line on said cover interposed between said rupturable means and said outer marginal edge and completely surrounding said rupturable means providing for flexibility of the cover between said non-rupturable perforated line and said rupturable means to prevent premature rupture of said rupturable means.

Claim 6

A food container comprising: (a) a relatively heavy gauge metallic foil pan; (b) a relatively light gauge metallic foil cover; (c) a crimping skirt defined by marginal portions of said foil pan and foil cover which are bonded together to seal the interior of said container and to form said crimping skirt; (d) a paperboard cover overlying said light gauge metallic foil cover, said paperboard cover having a marginal outer edge, and rupturable means defining a central removable portion on said cover, said rupturable means being inwardly spaced from said marginal outer edge on said paperboard cover, and an interrupted non-rupturable perforated line in said paperboard cover interposed between said rupturable means and said marginal outer edge of said paperboard cover, said interrupted non-rupturable perforated line surrounding said rupturable means to provide for flexibility of the cover between said non-rupturable perforated line and said rupturable means; and (e) said crimping skirt being folded down over and crimped onto a marginal portion of said paperboard cover so as to overlie said marginal outer edge of said paperboard cover to secure said paperboard cover to said container, said interrupted perforated line being operable to provide relief of stress forces imparted to said paperboard cover by said crimped crimping skirt to prevent premature rupture of said rupturable means.

Claim 7

A food container comprising: (a) a relatively heavy gauge metallic foil pan; (b) a relatively light gauge metallic foil cover; (c) a crimping skirt defined by marginal portions of said foil pan and foil cover which are bonded together to seal the interior of said container and to form said crimping skirt; (d) a paperboard cover overlying said light gauge metallic foil cover, said paperboard cover having a marginal outer edge, and rupturable means defining a central removable portion on said cover, said rupturable means being inwardly spaced from said marginal outer edge on said paperboard cover, and an interrupted non-rupturable perforated line in said paperboard cover interposed between said rupturable means and said marginal outer edge of said paperboard cover, said interrupted non-rupturable perforated line surrounding said rupturable means to provide for flexibility of the cover between said non-rupturable perforated line and said rupturable means; and (e) said crimping skirt being folded down over and crimped onto a marginal portion of said paperboard cover so as to overlie said marginal outer edge of said paperboard cover to secure said paperboard cover to said container, said interrupted perforated line being operable to provide relief of stress forces imparted to said paperboard cover by said crimped crimping skirt to prevent premature rupture of said rupturable means.

Claim 8

The food container of claim 4, further comprising a wire handle having a loop portion disposed beneath said crimping skirt, said wire handle being secured to said container by the crimping force of said crimping skirt.