Patents by Inventor Ludovic Ducate

Ludovic Ducate 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).

  • Liquid meter with improved pivoting
    Patent number: 6343518
    Abstract: The invention provides a liquid meter comprising a measurement chamber in which a spinner is caused to rotate about an axis and pivots, at least at low liquid flow rates, on a support in alignment with the axis. The pivoting motion takes place via a ball that is free to rotate between two concave surfaces each having a radius of curvature that is greater than the radius of curvature of the ball. One of the concave surfaces is tied to the spinner, whereas the other surface is secured to the support.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: February 5, 2002
    Assignee: Schlumberger Industries, S.A.
    Inventors: Daniel Catherin, Ludovic Ducate