Beer foam enhancing process and apparatus
AssigneeAnheuser-Busch Companies, Inc.
InventorsJames Teng, John H. Dokos
Life of this patent
Estimating the term…
Abstract
A beer foaming process and apparatus in which a smooth stable foam is formed by intimately admixing a nitrogen containing gas, preferably air, by a Venturi effect in a nozzle positioned on the beer tap. The nozzle has a mixing chamber with a perforated plate at its intake end to divide the flow of beer from the keg into smaller streams of higher velocity in the mixing chamber, intake ports in the side walls of the chamber for admitting gas into the chamber, and a screen of 30 to 200 mesh at the discharge end of the nozzle to form the stable foam discharged from the chamber.
Claims8
A process for foaming malt beverages comprising the steps of
- (a) moving a pressurized malt beverage stream from a container through a passage,
- (b) dividing the malt beverage stream into a plurality of smaller streams of higher linear velocity and discharging the smaller streams into a mixing chamber,
- (c) injecting a nitrogen containing gas into the mixing chamber,
- (d) intimately mixing the nitrogen containing gas into the malt beverage streams, and
- (e) discharging the malt beverage mixed with nitrogen containing gas as a thick creamy stable foam.
Dependencies are inferred from the claim text.