Patents by Inventor Michael J. L. Chapman

Michael J. L. Chapman 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).

  • Patent number: 5343743
    Abstract: An asymmetrical displacement flowmeter comprises a streamlined body or assembly 1 which floats or is submerged in liquid 3 and is subjected to frictional and dynamic pressure forces caused by liquid flow and tilts about axis 9 near the leading end of the body being anchored relative to the flow through tie 7 and anchor 6 or other means acting through axis 9. Degree of tilt from the vertical of body 1 about the axis is affected by the gravity restoring moment acting about the axis and can be adjusted by movement of weight 14 within the body. Pointer 12 attached to pendulum 13 about axis 9 indicates velocity of flow on scale 2 attached to body 1. In open channel depth is measured on scale 11. In closed conduit, body rotates about shaft through wall and may be folded during installation. Velocity and depth may be transmitted electronically.
    Type: Grant
    Filed: December 31, 1990
    Date of Patent: September 6, 1994
    Inventor: Michael J. L. Chapman