Patents by Inventor Jack Eric Campbell

Jack Eric Campbell 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).

  • Starting system for spark ignition engine
    Patent number: 6314938
    Abstract: A starting system for a manual only pull start internal combustion engine with a starting pulley, a pull cord wrapped around the starting pulley, a rotor selectively engageable with the starting pulley, and an ignition module located adjacent to rotor. The starting pulley has a pull cord groove with an enlarged diameter between about 2.5 to 3.4 inches. The ignition module is adapted to fire a spark plug of the engine with a timing retard of about 8 degrees at a speed of about 500 rpm of the rotor.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: November 13, 2001
    Assignee: Deere & Company
    Inventors: Patrick A. McCreery, Jack Eric Campbell, Charles Gaymon