Patents Assigned to FDH INFRASTRUCTURE SERVICES, LLC
  • Patent number: 11319715
    Abstract: A method of de-tensioning a rod by attaching a gripping unit removal device to a gripping unit and rod, positioning a chair frame over the gripping unit, positioning a rod tensioning unit along the rod with one end of the rod tensioning unit being in contact with the chair frame, applying a first force to the rod tensioning unit, positioning a bearing plate on the rod in contact with the rod tensioning unit, positioning a load cell in contact with the rod on the rod tensioning unit, securing a drive unit to the chair frame such that a portion of the drive unit is in contact with the rod, applying a second pressure to the rod tensioning unit, actuating the drive unit, and releasing the second pressure on the rod tensioning unit.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: May 3, 2022
    Assignee: FDH INFRASTRUCTURE SERVICES, LLC
    Inventors: Robert Lindyberg, Rakesh Khan, Afshin Karshenas, Brennon Fuqua, Travis Ferguson