US Patent 7770410 Beverage cooler and method

A coolant base for regulating the temperature of a beverage is detachable from the beverage container with which it works. The base may be repeatedly used with the same container. The base can be chilled separately from the beverage container and, when assembled, can provide a stable, chilled beverage for an extended time. In some embodiments, the diameter of the base cooler/container system is the same as the diameter of the beverage container absent the base cooler.