Patents by Inventor George W. Cranfill

George W. Cranfill has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5171434
    Abstract: An effluent recycling sanitation system. A first container forms a placid waste separator connected in series to a second container forming an effluent recycling chamber. Both containers are located below ground and are formed from reinforced concrete having a fiberglass liner separated by insulation preventing outward flow of heat energy. The first container is sealed relative to the atmosphere providing for biodegradation of incoming sewage with a vertically extending screen allowing only liquid sewage to flow outwardly into the second container. An air inlet tube extends into the second container allowing fresh air to move into the container with gases then being withdrawn via a second tube extending out of the second container and powered by an air turbine. A solar converter plus auxiliary heat coils located within the second container rinse the temperature within the second container. Liquid within the second container is evaporated via the outlet tube.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: December 15, 1992
    Assignee: Outdoor Sanitation
    Inventors: Charles M. Anderson, Jr., Stephen C. Cline, George W. Cranfill