Patent ID: 11898796
Assignee: nan
Field: Other consumer goods (Other fields)
Classification: CPC F | IPC F

Claim 7:
8. A self-cooling beverage container apparatus, comprising:
a beverage container surrounded by atmospheric pressure and having a container wall and a container opening mechanism and a carbonated beverage contained within said container and producing a carbonation pressure which increases container internal pressure above atmospheric pressure subsequent to assembly of said container, filling of said container with said carbonated beverage and sealing of said container;
a cooling assembly at least partly submerged in said carbonated beverage and comprising a cooling assembly vessel with a collapsible volume and having a vessel wall and a vessel first region and a vessel second region; a compressible plug member formed of a plug member material which lacks resilience to return to its initial cross-section area after being compressed and has a plug member initial cross-sectional area when said container is sealed and is contained within said vessel and abuts a plug member abutment portion of said vessel wall which is compressible and has resilience to return at least partly to its initial cross-sectional area after having been compressed and said plug member abutment portion defining an interconnection structure comprising said plug abutment portion, separating said vessel into said first vessel first region defining a humidification liquid chamber having a humidification liquid chamber wall and a humidification liquid contained within said humidification liquid chamber and the vessel second region defining a dry gas chamber having a dry gas chamber wall, and at least one endothermic reaction compound contained within said dry gas chamber, wherein said interconnection structure fluidly interconnects said humidification liquid chamber and said dry gas chamber;
said plug member abutment portion having a plug member abutment portion initial cross-sectional area and the interconnection structure having an interconnection structure initial cross-sectional area at atmospheric pressure prior to container assembly and sealing, and being compressed to a plug member abutment portion compressed cross-sectional area by a subsequent increase in container internal pressure to carbonation pressure subsequent to container assembly and sealing which is less than the interconnection structure initial cross-sectional area, thereby compressing the plug member initial cross-sectional area to a plug member compressed cross-sectional area, such that the plug member compressed cross-sectional area and shape matches the plug member abutment portion compressed cross-sectional area and shape and circumferentially abuts said plug member abutment portion, thereby maintaining its sealing of said interconnection structure against the passage of fluid;
such that operating said container opening mechanism and thereby opening said container to the surrounding atmosphere causes a decrease in the container internal pressure bearing upon said plug member abutment portion from the carbonation pressure to atmospheric pressure, permitting said plug member abutment portion to resiliently expand relative to said plug member to a plug member abutment portion expanded cross-sectional area, creating space between said plug member and said plug member abutment portion and thereby opening fluid communication between said humidification liquid chamber and said dry gas chamber through said interconnection structure, causing said humidification liquid to mix and react with said at least one endothermic reaction compound endothermically, extracting heat from said beverage, and thereby cooling said beverage.