Patents by Inventor Geoffrey John Dudley

Geoffrey John Dudley 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).

  • Method and device for balancing charges of a plurality of series-connected battery cells
    Patent number: 6437539
    Abstract: A method and device for balancing the charges of a plurality of series-connected battery cells, the device comprising a current dissipative loop connected across the terminals of each battery cell, the voltage across each battery cell being measured, the average value of the measured voltages being determined, the measured voltage being then compared to the average value, and the measured voltage of each battery cell being adjusted to the average value so as to equalize charges of all battery cells.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: August 20, 2002
    Assignee: Agence Spatiale Europeenne
    Inventors: Dan Hakan Lennart Olsson, Geoffrey John Dudley
  • Method and device for balancing charges of a plurality of series-connected battery cells
    Publication number: 20010019256
    Abstract: A method and device for balancing the charges of a plurality of series-connected battery cells, the device comprising a current dissipative loop connected across the terminals of each battery cell, the voltage across each battery cell being measured, the average value of the measured voltages being determined, the measured voltage being then compared to the average value, and the measured voltage of each battery cell being adjusted to the average value so as to equalize charges of all battery cells.
    Type: Application
    Filed: February 27, 2001
    Publication date: September 6, 2001
    Inventors: Dan Hakan Lennart Olsson, Geoffrey John Dudley
  • Thermally-activated switch for short-circuiting a battery cell
    Patent number: 5898356
    Abstract: A thermally activated short-circuit switch for connection in parallel with a battery cell has first and second contact elements (6; 3) which are distinct from the electrodes of a diode, and thermally activatable means (45) for short-circuiting the first and second contact elements (6; 3). The first and second contact elements have respective first and second regions (6; 3) facing each other, and said thermally activatable means (45) is mechanically linked to the first contact element (6).
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: April 27, 1999
    Assignee: Agence Spatiale Europeenne
    Inventors: Peter Ffrecheville Gascoyne, Geoffrey John Dudley