Patents by Inventor Hermilo Guzman

Hermilo Guzman 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).

  • Ground fault detector and locator
    Patent number: 4884034
    Abstract: A ground fault detector and locator for use in servicing ungrounded d-c or a-c power distribution systems. A pulsating ground current is introduced between the unfaulted side of the distribution system and earth ground. A current probe and associated sensing circuits are then employed to identify the faulted branch circuit without interrupting service to unfaulted branch circuits.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: November 28, 1989
    Inventor: Hermilo Guzman