Patents Assigned to Dispensing Systems International, Inc.
  • Patent number: 6530400
    Abstract: A carbonated beverage is conveyed from a source to a closed reservoir at a first pressure level. The pressure in the reservoir is controlled by selectively venting gas and adding pressurized gas to the reservoir to maintain the carbonated beverage at a second pressure level that is less than the first pressure level and substantially greater than atmospheric pressure. The carbonated beverage is dispensed from the reservoir into a serving container by reducing the pressure in the reservoir to substantially atmospheric pressure and then opening an outlet valve. During prolonged periods when dispensing is not occurring, the pressure in the reservoir may be increased to prevent degassing of the carbonated beverage. In that case, the reservoir pressure is reduced to the second pressure level before another dispensing operation.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: March 11, 2003
    Assignee: Dispensing Systems International, Inc.
    Inventor: Patrick L. Nelson