Patents by Inventor Ian Robert Jandrell

Ian Robert Jandrell 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).

  • Spark gap protection device
    Patent number: 8018705
    Abstract: A spark gap protection device is provided. The device comprises a plurality of spark gaps and a plurality of windings. Each spark gap is connected to at least one winding which is inductively coupled to an associated winding connected to another spark gap so that, in use, a surge current flowing across a spark gap and through a winding connected to the spark gap induces a voltage in the associated inductively coupled winding connected to another spark gap. This forces the other spark gap to trigger, thereby distributing the surge current between the spark gaps.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: September 13, 2011
    Assignee: University of Witwatersrand
    Inventors: Aristidis Michalopoulos, Ian Robert Jandrell, John Michael Van Coller, Andreas Alan Beutel
  • SPARK GAP PROTECTION DEVICE
    Publication number: 20100296219
    Abstract: A spark gap protection device is provided. The device comprises a plurality of spark gaps and a plurality of windings. Each spark gap is connected to at least one winding which is inductively coupled to an associated winding connected to another spark gap so that, in use, a surge current flowing across a spark gap and through a winding connected to the spark gap induces a voltage in the associated inductively coupled winding connected to another spark gap. This forces the other spark gap to trigger, thereby distributing the surge current between the spark gaps.
    Type: Application
    Filed: May 21, 2010
    Publication date: November 25, 2010
    Applicant: UNIVERSITY OF WITWATERSRAND
    Inventors: Aristidis MICHALOPOULOS, Ian Robert JANDRELL, John Michael VAN COLLER, Andreas Alan BEUTEL
  • Spark gap protection device
    Patent number: 7787230
    Abstract: A spark gap protection device is provided. The device comprises a plurality of spark gaps and a plurality of windings. Each spark gap is connected to at least one winding which is inductively coupled to an associated winding connected to another spark gap so that, in use, a surge current flowing across a spark gap and through a winding connected to the spark gap induces a voltage in the associated inductively coupled winding connected to another spark gap. This forces the other spark gap to trigger, thereby distributing the surge current between the spark gaps.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: August 31, 2010
    Assignee: University of Wirwatersrand, Johannesburg
    Inventors: Aristidis Michalopoulos, Ian Robert Jandrell, John Michael Van Coller, Andreas Alan Beutel
  • Spark Gap Protection Device
    Publication number: 20080310072
    Abstract: A spark gap protection device is provided. The device comprises a plurality of spark gaps and a plurality of windings. Each spark gap is connected to at least one winding which is inductively coupled to an associated winding connected to another spark gap so that, in use, a surge current flowing across a spark gap and through a winding connected to the spark gap induces a voltage in the associated inductively coupled winding connected to another spark gap. This forces the other spark gap to trigger, thereby distributing the surge current between the spark gaps.
    Type: Application
    Filed: September 14, 2006
    Publication date: December 18, 2008
    Applicant: University of Witwatersrand
    Inventors: Aristidis Michalopoulos, Ian Robert Jandrell, John Michael Van Coller, Andreas Alan Beutel