US Patent 7845522 Integrated and disposable dispenser assembly

Integrated and disposable dispenser assemblies that initially are contained entirely or at least substantially entirely within a beverage container, but which may be removed therefrom and placed in an operative position, pressurizing the contents of the container, avoiding prolonged contact between the contents of the container and air, providing a dispensing force for control by a simple dispensing valve and in those instances where it is desired, maintaining carbonation on the beverage. Two representative embodiments are disclosed, one of which may be contained in a single enclosure within a beverage container, and the other of which may be contained in two enclosures within a beverage container.