Patents by Inventor Robert Edwin Lewis

Robert Edwin Lewis 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).

  • Borehole optical lateral displacement sensor
    Patent number: 5825496
    Abstract: There is provided by this invention an optical displacement sensor that utilizes a reflective target connected to a surface to be monitored to reflect light from a light source such that the reflected light is received by a photoelectric transducer. The electric signal from the photoelectric transducer is then imputed into electronic circuitry to generate an electronic image of the target. The target's image is monitored to determine the quantity and direction of any lateral displacement in the target's image which represents lateral displacement in the surface being monitored.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: October 20, 1998
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Robert Edwin Lewis