Patents Assigned to EarthGrid PBC
  • Tunnel boring system
    Patent number: 11591909
    Abstract: A plasma tunnel boring machine including a plurality of plasma torches on the cutting head, and a plurality of nozzles on the cutting head to provide a stream to cool an area while the plasma torches are active, and a tractor providing propulsion to the cutting head, the tractor to move the cutting head to cut a tunnel.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: February 28, 2023
    Assignee: Earthgrid PBC
    Inventor: Troy Anthony Helming
  • Tunnel boring system
    Patent number: 11136886
    Abstract: A plasma tunnel boring machine including a plurality of plasma torches on the cutting head, and a plurality of nozzles on the cutting head to provide a stream to cool an area while the plasma torches are active, and a tractor providing propulsion to the cutting head, the tractor to move the cutting head to cut a tunnel.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: October 5, 2021
    Assignee: EarthGrid PBC
    Inventor: Troy Anthony Helming