Patents by Inventor Jack B. Marshall

Jack B. Marshall 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).

  • OVERCURRENT THRESHOLD CORRECTION FOR IGNITION CONTROL
    Publication number: 20090260607
    Abstract: A system for overcurrent threshold correction in an ignition system. The system includes a control circuit and a current detection circuit. The control circuit has a first and second output. The first output of the control circuit charges a first ignition coil, the second output of the control circuit charges a second ignition coil. The overcurrent detection circuit adjusts the detection of an overcurrent condition, when the charging of the first coil overlaps with the charging of the second coil. Further, the control circuit is in communication with the overcurrent detection circuit to disable the first and second output, when the overcurrent condition is detected.
    Type: Application
    Filed: April 21, 2008
    Publication date: October 22, 2009
    Inventors: Matthew T. LaDuke, Jack B. Marshall, Dirk Swanson, Clyde A. Marlow