Infant feeding package

Claim 2

A closure seal fabricated of lightweight metal comprising a centrally located recessed puncture panel, scoring formed in said puncture panel to facilitate fracturing by the application of a downwardly directed force thereto, an annular inverted U-shaped sealing channel surrounding said puncture panel, said sealing channel including an inner wall extending upwardly from said puncture panel terminating in an annular top wall and a circumferential outer wall extending downwardly from said top wall, said top wall having an annular horizontally flattened section forming an upwardly facing gasket seat, a resilient sealing gasket positioned within said sealing channel and said gasket seat being slightly reduced in cross-sectional thickness by a coining operation to insure a flat horizontal surface.

Claim 3

A closure seal fabricated of lightweight metal comprising a centrally located recessed puncture panel, a circular score line formed about the periphery of said puncture panel to facilitate fracturing and downward displacement of said puncture panel by a downwardly directed localized force randomly applied at any position about said entire puncture panel periphery, an annular inverted U-shaped sealing channel surrounding said puncture panel and joined thereto by a sharply radiused juncture portion, said sealing channel including an inner wall extending substantially vertically upward from said radiused juncture portion terminating in an annular top wall, a circumferential straight cylindrical outer wall extending substantially vertically downwardly from said top wall and terminating in said vertical extent below said puncture panel, said top wall forming an upwardly facing gasket engaging seat including an annular horizontally flattened section having a width of minor extent relative to the width of said channel, a resilient sealing gasket confined entirely within said sealing channel above said radiused juncture portion and said scoring positioned immediately radially inward of the radially innermost extent of said radiused juncture portion so as to place said scoring free of the metal strain at said juncture portion and whereby the periphery of said puncture panel is rigidified by said sealing channel inner wall for effective puncturing with minimal distortion of said panel.

Claim 4

A closure seal fabricated of lightweight metal comprising a centrally located recessed puncture panel, a circular score line formed about the periphery of said puncture panel to facilitate fracturing and downward displacement of said puncture panel by a downwardly directed localized force randomly applied at any position about said entire puncture panel periphery, an annular inverted U-shaped sealing channel surrounding said puncture panel and joined thereto by a sharply radiused juncture portion, said sealing channel including an inner wall extending substantially vertically upward from said radiused juncture portion terminating in an annular top wall, a circumferential straight cylindrical outer wall extending substantially vertically downwardly from said top wall and terminating in said vertical extent below said puncture panel, said top wall forming an upwardly facing gasket engaging seat including an annular horizontally flattened section having a width of minor extent relative to the width of said channel, a resilient sealing gasket confined entirely within said sealing channel above said radiused juncture portion and said scoring positioned immediately radially inward of the radially innermost extent of said radiused juncture portion so as to place said scoring free of the metal strain at said juncture portion and whereby the periphery of said puncture panel is rigidified by said sealing channel inner wall for effective puncturing with minimal distortion of said panel.

Claim 5

A closure seal fabricated of lightweight metal comprising a centrally located recessed puncture panel, a circular score line formed about the periphery of said puncture panel to facilitate fracturing and downward displacement of said puncture panel by a downwardly directed localized force randomly applied at any position about said entire puncture panel periphery, an annular inverted U-shaped sealing channel surrounding said puncture panel and joined thereto by a sharply radiused juncture portion, said sealing channel including an inner wall extending substantially vertically upward from said radiused juncture portion terminating in an annular top wall, a circumferential straight cylindrical outer wall entending substantially vertically downwardly from said top wall and terminating in said vertical extent below said puncture panel, said top wall forming an upwardly facing gasket engaging seat including an annular horizontally flattened section having a width of minor extent relative to the width of said channel, a resilient sealing gasket confined entirely within said sealing channel above said radiused juncture portion and said scoring positioned closely adjacent said radiused juncture portion whereby the periphery of said puncture panel is rigidified for puncturing by said sealing channel inner wall wherein said scoring is formed within the metal surface and has a substantially V-shaped cross-sectional configuration including a radially outwardly inclined score wall and a radially inwardly inclined score wall and said outwardly inclined score wall forming a greater angle to the vertical than the angle to the vertical formed by said inwardly inclined score wall.

Claim 6

A closure seal fabricated of lightweight metal comprising a centrally located recessed puncture panel, a circular score line formed about the periphery of said puncture panel to facilitate fracturing and downward displacement of said puncture panel by a downwardly directed localized force randomly applied at any position about said entire puncture panel periphery, an annular inverted U-shaped sealing channel surrounding said puncture panel and joined thereto by a sharply radiused juncture portion, said sealing channel including an inner wall extending substantially vertically upward from said radiused juncture portion terminating in an annular top wall, a circumferential straight cylindrical outer wall entending substantially vertically downwardly from said top wall and terminating in said vertical extent below said puncture panel, said top wall forming an upwardly facing gasket engaging seat including an annular horizontally flattened section having a width of minor extent relative to the width of said channel, a resilient sealing gasket confined entirely within said sealing channel above said radiused juncture portion and said scoring positioned closely adjacent said radiused juncture portion whereby the periphery of said puncture panel is rigidified for puncturing by said sealing channel inner wall wherein said scoring is formed within the metal surface and has a substantially V-shaped cross-sectional configuration including a radially outwardly inclined score wall and a radially inwardly inclined score wall and said outwardly inclined score wall forming a greater angle to the vertical than the angle to the vertical formed by said inwardly inclined score wall.

Claim 7

A closure seal as in claim 2, wherein said scoring is formed in the interior surface of said puncture panel.

Claim 8

A closure seal as in claim 2, wherein said sealing gasket underlies said channel top wall extending exclusively from the upper end of said channel inner wall to an intermediate point along said channel outer wall.