US Patent 6923345 Dispensing system

A dispensing system for use on a liquid container such as a bottle or the like for dispensing the liquid contents from the bottle. The outlet opening of the container is closed by a throat plug assembly having a valve positioned therein which is open when the container is mounted in a dispensing fixture which is closed when the container is not mounted on the dispensing system. The throat plug assembly also includes a specifically shaped valve which is opened slightly when the container is being stored or transported to vent vapor pressure from within the container should the same be necessary.