Patents by Inventor Michael E. Ellinger

Michael E. Ellinger 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).

  • Optical shaft torsional displacement and speed sensing system
    Patent number: 4863274
    Abstract: A rotating shaft torsional displacement and speed detector provides a light beam which impinges on one or both ends of the rotating shaft. Different combinations of beam altering materials such as reflecting and non-reflecting surfaces, wave retarding plates, and linear polarizers are attached to the front shaft end and rear shaft end. These beam altering materials change either the polarization or magnitude of the light beam in a predictable manner that allows for the detection of shaft speed and torsional displacement of the front shaft end with respect to the rear shaft end.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: September 5, 1989
    Assignee: Simmonds Precision Products, Inc.
    Inventors: William B. Spillman, Jr., Robert E. Rudd, III, Michael E. Ellinger, Douglas R. Patriquin, Bruce R. Kline