Patents by Inventor Robert M. Rivett

Robert M. Rivett 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).

  • Monitoring in-service resistance of AC conductors
    Patent number: 4577086
    Abstract: A method and apparatus of monitoring the resistance characteristics of a circuit carrying an alternating current or a current having an alternating component is described. The apparatus includes first integration or averaging means for integrating or averaging the potential drop for the period between instants when the instantaneous current has the same value in a current loop; and display means for displaying a value representative of the output from the integration or averaging means.
    Type: Grant
    Filed: September 9, 1983
    Date of Patent: March 18, 1986
    Assignee: The Welding Institute
    Inventors: James C. Needham, Robert M. Rivett, Raymond A. G. Perryman