Patent ID: 8567305

Claim:
A portable beverage aeration device for use with a first beverage container, comprising: a housing having an air chamber, a first passage extending from said air chamber to an ambient air source outside said housing, a supply area separated from said air chamber, a second passage in fluid communication between said air chamber and said supply area, and an exit in communication with said supply area; a first one-way valve generally allowing air to flow from said ambient air source to said air chamber through said first passage and generally preventing air from flowing from said air chamber to said ambient air source through said first passage; a second one-way valve generally allowing air to flow from said air chamber to said supply area through said second passage and generally preventing air and liquid from flowing from said supply area to said air chamber through said second passage; a cap selectively covering said housing exit; a safety valve situated in said supply area proximate said housing exit when said cap covers said housing exit, said safety valve configured to prevent an undesirable buildup of pressure in said supply area; a diffuser having a plurality of openings; an output tube extending from said diffuser to a location in communication with said supply area to alternately supply air from said supply area to said diffuser and allow liquid to pass from said diffuser to said supply area; a pump in communication with said air chamber configured to force air from said air chamber to said supply area; a fastener portion configured to removably couple said housing to a beverage container such that said diffuser is positioned in said beverage container when said housing is coupled to the first beverage container; wherein: said fastener portion includes threading complementary to threading of said beverage container for coupling said housing to the beverage container; said output tube is coupled to said fastener portion; and said output tube and said diffuser are the only path between said supply area and the first beverage container when said housing is coupled to the first beverage container.