Patents by Inventor Errol L. Root

Errol L. Root 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 determining the location of an arc in a waveguide transmission line or the like
    Patent number: 4316139
    Abstract: A method and circuit for locating an arc in a waveguide which utilize detectors responsive to the vibratory and electromagnetic disturbances resulting from an arc. Since the disturbances travel at different velocities, the location of the arc can be readily determined. A counter counts time periods between the time of detection of the electromagnetic disturbance and the time of detection of the vibratory disturbance. The length of the time periods is selected so that the quantity counted may be directly displayed as the distance to the arc location.
    Type: Grant
    Filed: June 13, 1979
    Date of Patent: February 16, 1982
    Assignee: International Telephone and Telegraph Corporation
    Inventor: Errol L. Root