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AssigneeContinental White Cap, Inc.
InventorsRobert J. Heilman, Daniel M. Carson, Robert E. Sparks, Norbert S. Mason
Estimating the term…
This relates to the provision of a vacuum actuated button type closure with a tamper indicating arrangement which will visually indicate when a container has been opened or more particularly when the vacuum within a vacuum packed container has been lost. The deflectable button of the closure is utilized to squeeze a dye from a sponge like member into a layer of absorbent material so as to color the absorbent material. The absorbent material, in turn, is provided with non-absorbent areas which define indicia to indicate that an associated container has been opened. The layer of absorbent material is carried by an arched cross sectional cover and in several forms of the cover, a central portion of the cover is downwardly deformable under pressure to move the layer of absorbent material from an inoperative position to a lowered position for cooperation with the sponge like member when the button returns to its up position to effect the flow of the dye from the sponge like member into the layer of absorbent material.
A tamper indicating closure comprising a closure member having an end panel including an axially deformable vacuum actuated button said button movable between an up position and a down position, a cover having a generally central portion formed in a upwardly extending configuration, said central portion being axially deformable into a downwardly extending configuration, said cover being carried by said end panel in overlying relation to said button, a layer of absorbent material overlying said button, said layer of absorbent material having non-absorbent areas defining message indicia, a sponge like member below said layer of absorbent material, said sponge-like member having a liquid dye therein, said cover and said button operatively associated to clamp said sponge like member and said absorbent material therebetween when said button is in the up position and said central portion of said cover is in said downwardly extending configuration, thereby allowing the liquid dye to color all of said layer of absorbent material except for said non-absorbent areas to make said non-absorbent areas readily visible, and said generally central portion of said cover permitting light to pass through for the purpose of viewing any coloring of said layer of absorbent material.
A tamper indicating closure comprising a closure member having an end panel including an axially deformable button, said button positionable between an up position and a down position, a transparent cover carried by said end panel in overlying relation to said button, said cover being arched shaped in cross section and constructed to move axially downward to a down position, a layer of absorbent material carried by said cover and overlying said button, said layer of absorbent material having non-absorbent areas defining message indicia, and a sponge like member axially spaced form said layer of absorbent material for holding a liquid dye, said sponge like member compressively engaging said layer of absorbent material when said cover is in the down position and said button is in the up position with said dye entering said absorbent material to color all of said layer of absorbent material except for said non-absorbent areas, making said non-absorbent areas readily visible.
A tamper indicating closure comprising a closure member having an end panel including an axially deformable button, a transparent cover carried by said end panel in overlying relation to said button, a layer of absorbent material overlying said button, said layer of absorbent material having non-absorbent areas defining message indicia, and a sponge like member below said layer of absorbent material for holding a volume of a liquid dye therein, said layer of absorbent material and said sponge like member both carried by said cover, said sponge like member positioned to be clamped between said button and said layer of absorbent material to color all of said layer of absorbent material except for said non-absorbent areas, making said non-absorbent areas readily visible.
Dependencies are inferred from the claim text.