Patents by Inventor Francis Martin Donahue

Francis Martin Donahue 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).

  • Ignition coil to spark plug mating apparatus
    Patent number: 8061338
    Abstract: A retaining apparatus is provided for mating an ignition coil to a spark plug.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: November 22, 2011
    Assignee: Ford Global Technologies, LLC
    Inventors: Jim Gibboney, Francis Martin Donahue
  • Ignition coil assembly with spark plug connector
    Patent number: 6668810
    Abstract: An ignition coil assembly of the type which is directly mounted onto an associated internal combustion engine spark plug. The coil assembly includes a spark plug boot section made of a highly elastic material with an inside cylindrical passageway. The inside passageway features ribs which engage a high voltage connection coil spring positioned in the passageway to make an electrical connection between the coil and spark plug high voltage terminals. The spring has a generally constant outside diameter outer section except its end segments have a reduced diameter where they contact the high voltage terminals. The passageway ribs retain the spring in position prior to its installation and after its removal from the associated spark plug.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: December 30, 2003
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Richard William St. John, William Douglas Walker, Todd C. Sexton, Rick S. Burchett, Alex William Widiger, Francis Martin Donahue, III