Patents by Inventor Joseph B. Griffo

Joseph B. Griffo 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).

  • Fluid flow meter with counter rotating turbine impellers
    Patent number: 3934473
    Abstract: A fluid flow meter with two independantly counter rotating turbine impellers is disclosed in which fluid characteristics and/or upstream flow disturbances cause minimal variations in volume flow rate measurements by the meter as a result of fluidynamic interaction between the impellers.The angular velocities of each of the impellers are sensed in a conventional manner after which the velocity signals are added to indicate a total volume thruput, and/or rate of flow, and optionally compared to indicate an occurance of mechanical or electronic degradation.
    Type: Grant
    Filed: June 12, 1974
    Date of Patent: January 27, 1976
    Inventor: Joseph B. Griffo