Patents by Inventor Fredrick J. Hodge

Fredrick J. Hodge 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).

  • Head positioning transducer for helical scan video reproducer
    Patent number: 4337492
    Abstract: A head positioning transducer is disclosed for use with a rotating drum assembly for scanning a magnetic tape along a plurality of adjacent helically positioned record tracks, wherein the transducer includes a permanent magnet field assembly and a drive coil positioned adjacent thereto mounted on a cantilevered beam, at one end of which a playback head is mounted, such that a drive current supplied to the coil produces a field which interacts with the field of the magnet, causing a force on the coil and beam, resulting in controlled movement of the head transverse to the record tracks.
    Type: Grant
    Filed: April 8, 1980
    Date of Patent: June 29, 1982
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Marshall R. Brookhart, Fredrick J. Hodge, Thomas J. Worden