Patents by Inventor Thomas J. Lauria

Thomas J. Lauria 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).

  • Backflow preventer with failure indicator
    Patent number: 5462082
    Abstract: A backflow prevention device with a failure indicator designed to determine the functional state of integral backflow prevention device(s) or check valve(s). Check valve(s) are assembled in combination with failure indicator(s) and valve(s) or flow regulation device(s), and is designed to allow a working fluid to flow in the desired direction of fluid flow and prevent backflow. A built in test or procedure enables the functional condition of backflow prevention device(s) or check valve(s) to be determined readily, easily, and reliably.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: October 31, 1995
    Inventor: Thomas J. Lauria
  • Backflow preventer with failure indicator
    Patent number: 5404905
    Abstract: A backflow prevention device with a failure indicator designed to determine the functional state of integral backflow prevention device(s) or check valve(s). Check valve(s) are assembled in combination with pressure gauge(s) or failure indicator(s) and valve(s) or flow regulation device(s) between an inlet area and outlet area, and is designed to allow a working fluid to flow in the desired direction of fluid flow and prevent backflow. A built in test or procedure enables the functional condition of backflow prevention device(s) or check valve(s) to be determined readily, easily, and reliably.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: April 11, 1995
    Inventor: Thomas J. Lauria