Patents by Inventor David S. McCollum

David S. McCollum 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).

  • Vibrating tube densimeter
    Patent number: 5295084
    Abstract: A Coriolis effect densimeter which produces density output data of improved accuracy by embodying the principal that the natural frequency of a vibrating tube filled with material decreases with an increase in the material mass flow rate. High accuracy output data is achieved by measuring the natural frequency of the tube as material flows therethrough, correcting the measured frequency to compensate for the decrease in natural frequency caused the material flow (mass flow rate) and using the corrected natural frequency in the material density computation.
    Type: Grant
    Filed: October 8, 1991
    Date of Patent: March 15, 1994
    Assignee: MicroMotion, Inc.
    Inventors: Palani Arunachalam, Robert Bruck, David S. McCollum, Joseph D. Titlow