Abstract: In an interlocking device between a cap for a beverage container and a carbonation device for introducing carbon dioxide gas into said beverage container in a locked position, wherein said carbonation device includes projecting structure, and said cap includes rotatable capturing structure for capturing said projecting structure so as to lock said cap to said carbonation device.

Abstract: In a cap for sealing the end of a beverage container to be carbonated by the release of pressurized gas from a nozzle having a valve, said cap including: a thread to secure said cap to said beverage container; a cavity for sealingly receiving said nozzle and engaging said valve to release said carbonated gas; a cap passage for communication of said carbonated gas from said valve to said end of said beverage container; a cap valve moveable between a closed position to close said end of said beverage container, and an open position so as to carbonate said beverage when said cavity engages said valve to release said carbonated gas.

Abstract: In a device for activating the release of pressurized gas through a passage, including: valve disposed within said passage, said valve having an inlet and an outlet, said valve moveable between an open position to permit communication of said gas with said passage, and said inlet and outlet, and a closed position to stop communication of said gas between said inlet and outlet; a piston associated with said valve for moving said valve between said open and closed position; a support associated with said piston for slidably supporting said piston between said open and closed positions.