Patents by Inventor Williem Hermanus ROOTHMAN

Williem Hermanus ROOTHMAN 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).

  • Mobile underground tunnel borer arrangement
    Patent number: 11434762
    Abstract: A mobile tunnel boring unit is disclosed, comprising a support body driven by first drive means, the first drive means including a pair of spaced apart crawler tracks in contact with the tunnel floor and related track driving means to move the tracks. A cutter head drive means is located at an operatively front end of the boring unit, to which a rotatable cutter head can be fitted and rotatingly driven, in use, the cutter head comprising a full face cutter head fitted with cutters to bore a tunnel face. The cutter head is arranged to allow cuttings to pass through the cutter head for discharge into a muck hopper and onto a first conveyor arrangement, the cutter head drive means and a rear portion of the cutter head defining aligned central apertures to accommodate the muck hopper and a front part of the first conveyor arrangement. A telescopic shield arrangement is provided to shield the boring unit.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: September 6, 2022
    Assignee: DRILLING TECHNICAL SERVICES (PTY) LTD
    Inventors: Barend Jacobus Jordaan, Gerhard Pretorius, Johannes Nicolaas Jacobus Calitz, Williem Hermanus Roothman
  • MOBILE UNDERGROUND TUNNEL BORER ARRANGEMENT
    Publication number: 20200370434
    Abstract: A mobile tunnel boring unit is disclosed, comprising a support body driven by first drive means, the first drive means including a pair of spaced apart crawler tracks in contact with the tunnel floor and related track driving means to move the tracks. A cutter head drive means is located at an operatively front end of the boring unit, to which a rotatable cutter head can be fitted and rotatingly driven, in use, the cutter head comprising a full face cutter head fitted with cutters to bore a tunnel face. The cutter head is arranged to allow cuttings to pass through the cutter head for discharge into a muck hopper and onto a first conveyor arrangement, the cutter head drive means and a rear portion of the cutter head defining aligned central apertures to accommodate the muck hopper and a front part of the first conveyor arrangement. A telescopic shield arrangement is provided to shield the boring unit.
    Type: Application
    Filed: July 31, 2018
    Publication date: November 26, 2020
    Applicant: DRILLING TECHNICAL SERVICS (PTY) LTD
    Inventors: Barend Jacobus JORDAAN, Gerhard PRETORlUS, Johannes Nicolaas Jacobus CALITZ, Williem Hermanus ROOTHMAN