Patents by Inventor Joshua E. Hughes

Joshua E. Hughes 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).

  • Arc-flash sensor using optical fiber
    Patent number: 11837862
    Abstract: An arc-flash sensor may provide flexibilities for supporting both surface mounting and peek-through mounting on a panel (e.g., a wall panel or an electrical panel). The arc-flash sensor includes a translucent optical lens, a fiber-optic cable, and a skirt around the back side of the optical lens. The translucent optical lens diffuses the light produced in an arc flash to enhance the detectability of light signals picked by the fiber-optic cable. The fiber-optic cable enters parallel to the panel and perpendicular to principal axis of the optical lens. The parallel fiber-optic cable configuration reduces sensor installation space occupied and potential damage to the sensor. The skirt is used to prevent false tripping caused by unexpected events on the fiber-optic cable side such as camera flashes, lightning, sunlight, or the like.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: December 5, 2023
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Joshua E. Hughes, Gerald K. Hein, Aaron B. Burton
  • ARC-FLASH SENSOR USING OPTICAL FIBER
    Publication number: 20220115858
    Abstract: An arc-flash sensor may provide flexibilities for supporting both surface mounting and peek-through mounting on a panel (e.g., a wall panel or an electrical panel). The arc-flash sensor includes a translucent optical lens, a fiber-optic cable, and a skirt around the back side of the optical lens. The translucent optical lens diffuses the light produced in an arc flash to enhance the detectability of light signals picked by the fiber-optic cable. The fiber-optic cable enters parallel to the panel and perpendicular to principal axis of the optical lens. The parallel fiber-optic cable configuration reduces sensor installation space occupied and potential damage to the sensor. The skirt is used to prevent false tripping caused by unexpected events on the fiber-optic cable side such as camera flashes, lightning, sunlight, or the like.
    Type: Application
    Filed: October 9, 2020
    Publication date: April 14, 2022
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Joshua E. Hughes, Gerald K. Hein, Aaron B. Burton
  • Protective relay
    Patent number: D1073627
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: May 6, 2025
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Joshua E. Hughes, David Glen Riley, Mike Timothy Strickler