US Patent 11046572 Beer dispenser

A beer dispenser having a nozzle for positioning above a container and dispensing beer into the container. The dispenser includes at least one imaging device for generating at least one image of the dispensed beer, and a processor. The processor determines a measured foam height and a liquid upper surface from the at least one image of the dispensed beer, and adjusts a distance between the nozzle and the liquid upper surface as the beer is dispensed to control the measured foam height.