Patents by Inventor Fred E. Barrett

Fred E. Barrett 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).

  • Sediment agitating apparatus for water heater
    Patent number: 4790291
    Abstract: An agitating mechanism to aid in preventing the buildup of sediment in a gas fired water heater. The agitating mechanism includes a pump located outside of the tank and a first conduit connects the inlet of the pump to the interior of the tank, while a second conduit connects the discharge side of the pump to the lower end of the tank. Operation of the pump will withdraw water from the tank and discharge the water back into the tank adjacent the lower head to help provide agitation and prevent the buildup of sediment. The conduits, as well as the pump, can be mounted on a cleanout panel which encloses a cleanout opening in the lower end of the tank.
    Type: Grant
    Filed: May 7, 1987
    Date of Patent: December 13, 1988
    Assignee: A.O. Smith Corporation
    Inventor: Fred E. Barrett
  • Sediment agitating apparatus for water heater
    Patent number: 4790289
    Abstract: An agitating mechanism to aid in preventing the buildup of sediment in a gas fired water heater. The agitating mechanism includes a pump located outside of the tank and a first conduit connects the inlet of the pump to the interior of the tank, while a second conduit connects the discharge side of the pump to the lower end of the tank. Operation of the pump will withdraw water from the tank and discharge the water back into the tank adjacent the lower head to help provide agitation and prevent the buildup of sediment. The conduits, as well as the pump, can be mounted on a cleanout panel which encloses a cleanout opening in the lower end of the tank.
    Type: Grant
    Filed: November 19, 1987
    Date of Patent: December 13, 1988
    Assignee: A. O. Smith Corporation
    Inventor: Fred E. Barrett