Patents by Inventor Lee K. Stranjord

Lee K. Stranjord 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).

  • Interferometric fiber optic proximity switch
    Patent number: 5059783
    Abstract: A proximity switch for use with a single optical source of energy. A passive fiber-optic magnetometer includes a Michelson type magnetometer in which one of the legs is sensitized to magnetic fields. A fiber-optic data link connects the magnetometer to the single optical source of energy and to a photo detector. A permanent magnet positioned adjacent the magnetometer causes constructive interference which is detected by the photo detector.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: October 22, 1991
    Assignee: Honeywell Inc.
    Inventors: Lee K. Stranjord, Yellapu Anjan