Vacuum container with reclosable sealing closure having a vaccuum release sealing button
AssigneeContainer Development, Ltd.
InventorRalph P. Stodd
Life of this patent
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AssigneeContainer Development, Ltd.
InventorRalph P. Stodd
Estimating the term…
A vacuum pack food container is closed by releasable and reclosable sheet metal closure having a center portion defining an annular recess around an upwardly projecting integral vacuum release button with an undercut wall partially surrounded by a score line smaller than the button. The sealant material is confined within the button and has an outwardly projecting flange releasably bonded to the closure under the score line. Depressing the button peels the sealant flange from the closure to define a vacuum release passage which closes and seals when the pressure on the button is released. A peripheral skirt portion on the closure has inwardly projecting bosses which cooperate with cam surfaces on the bottom of a curled rim portion of a sheet metal container to provide a twist-on twist-off closure.
A vacuum container assembly adapted for enclosing a food product, comprising a cup-shaped container including an upper peripheral rim portion defining an open top chamber, a closure covering said chamber and having a peripheral skirt portion, a releasable and reclosable coupling connecting said skirt portion of said closure to said rim portion of said container, a fluid-tight seal between said closure and said rim portion and for holding a partial vacuum within said chamber, said closure having an integral and upwardly projecting inverted cup-shaped vacuum release button defined by a score line and a flexing portion within said closure, said score line partially surrounding a base portion of said button, a sealant material carried by said button and having a laterally projecting lower flange underlying said score line and releasably bonded to a bottom surface of said closure, said flange of said sealant material being effective to peel way from said closure in response to downward pressure on said button for defining a vacuum release passage between said closure and said flange, an said flange of sealant material being effective to return into contact with said closure for reclosing said vacuum release passage in response to releasing the downward pressure on said button.
A vacuum container assembly adapted for enclosing a food product, comprising a cup-shaped container including an upper peripheral rim portion defining an open top chamber, a closure covering said chamber and having a peripheral skirt portion, a releasable and reclosable coupling connecting said skirt portion of said closure to said rim portion of said container, a fluid-tight seal between said closure and said rim portion and for holding a partial vacuum within said chamber, said closure having an integral and upwardly projecting vacuum release button adjacent a score line within said closure, a sealant material bonded to said button within said chamber and including a portion covering said score line, said sealant material spaced apart from said fluid tight seal, said portion of said sealant material and an adjacent portion of said closure defining a vacuum release passage in response to downward pressure on said button, and said portion of said sealant material closing said vacuum release passage in response to the release of the downward pressure on said vacuum release button.
Dependencies are inferred from the claim text.