Patents by Inventor Laurance Jarvis

Laurance Jarvis 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).

  • Method and apparatus for measuring the moisture content of a substance
    Patent number: 4845421
    Abstract: The moisture content of a substance (1) on a moving belt (2) is measured as a function of dielectric constant. Two pairs of electrodes (4), (5) are positioned adjacent the belt, an inner pair of electrodes (4) and an outer pair (5), an A.C. potential is applied to the electrodes, the flux from the outer pair (5) passing through the substance (1) at a greater distance than the flux from the inner pair (4).
    Type: Grant
    Filed: October 9, 1987
    Date of Patent: July 4, 1989
    Assignee: Mineral Control Instrumentation Ltd.
    Inventors: Walter J. Howarth, Laurance Jarvis