Gravitating Vessel Patents (Class 137/189)
Sinking or bucket type float (Class 137/190)
  • Buoyant tank carbonator pump control for post-mix beverage apparatus
    Patent number: 4917831
    Abstract: A carbonator unit for a post-mix beverage dispenser having a carbonator tank immersed in a liquid flotation tank. The carbonator tank floats up and down with changes in the amount of water and head space in the carbonator tank to actuate a switch device mounted externally of the carbonator tank. Actuation of the switch causes a water pump to become operative to supply uncarbonated water to the carbonator tank. When the volume of carbonated water increases to a predetermined amount, the carbonator tank sinks to deactivate the switch.
    Type: Grant
    Filed: March 29, 1989
    Date of Patent: April 17, 1990
    Assignee: The Coca-Cola Company
    Inventors: Lawrence B. Ziesel, Robert D. Hughes
  • Waste water conveyance apparatus
    Patent number: 4280528
    Abstract: An arrangement for conveyance of waste water or liquid by vacuum operation, including a vertically movable container in which the waste water is collected. By causing the weight of the liquid to surmount a spring force and a force originating from the vacuum in the pipeline system an inlet for the waste water is opened. The waste water present in the container is then drawn into the conduit system by means of the vacuum present therein.
    Type: Grant
    Filed: April 9, 1980
    Date of Patent: July 28, 1981
    Assignee: Aktiebolaget Electrolux
    Inventor: Sigvard V. Soderstrom