Patents by Inventor Harold O. Ellison

Harold O. Ellison 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).

  • System and method for measuring the position of a tape drive head
    Patent number: 7203027
    Abstract: A sensor for measuring the position of the head of a tape drive is disclosed. The sensor includes a light emitter movably connected to the head; a light sensor movably connected to the head and rigidly connected to the light emitter and located to receive a beam of light from said light emitter; and, a light interrupter rigidly connected to the head and located for interrupting the light beam.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: April 10, 2007
    Assignee: Certance, LLC
    Inventors: Patrick Henry McCormack, Turguy Goker, Harold O. Ellison, Mark Decot, Jerry Hodges