초록 ▼

A container assembly is disclosed which incorporates a chemical indicator normally hermetically sealed from the ambient atmosphere, but exposed to the atmosphere upon opening of the container assembly. The indicator is adapted for changing appearance, either color or granule or crystal form, upon ex

A container assembly is disclosed which incorporates a chemical indicator normally hermetically sealed from the ambient atmosphere, but exposed to the atmosphere upon opening of the container assembly. The indicator is adapted for changing appearance, either color or granule or crystal form, upon exposure to moisture or oxygen. The indicator is either located in the interior of a hermetically sealed container, or is sealed in a frangible envelope which is operatively associated with a closure member of the container and is ruptured upon opening, or attempted opening of the container.

대표청구항 ▼

A sealing device for a container having removable closure means placed on a neck of the container, comprising: a peelable band sealingly engaging the periphery of said closure means; a hermetically sealed frangible envelope disposed between the neck of the container and the peelable band and being a

A sealing device for a container having removable closure means placed on a neck of the container, comprising: a peelable band sealingly engaging the periphery of said closure means; a hermetically sealed frangible envelope disposed between the neck of the container and the peelable band and being adhesively attached to both the band and the neck, and indicating means, for changing appearance in response to exposure to the ambient environment, contained within the sealed frangible envelope whereby the removal of said band ruptures the sealed envelope and exposes said indicating means to the ambient environment, the resultant change of appearance being visible from exterior of the container.