Patents by Inventor Robert W. Fitzgerald, Jr.

Robert W. Fitzgerald, Jr. 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).

  • Fiber optic transducers
    Patent number: 4408829
    Abstract: Method and apparatus for detecting and converting pressure signals to modulated light signals by microbending optical fibers as a function of the pressure signals. Transducers are described which include a length of multimode optical fiber supported at spaced points across a flexible diaphragm. Movement of the diaphragm in response to the pressure signals microbends the optical fiber to induce attenuation of light travelling along the fiber as a function of the signals.
    Type: Grant
    Filed: January 30, 1981
    Date of Patent: October 11, 1983
    Assignee: Schlumberger Technology Corporation
    Inventors: Robert W. Fitzgerald, Jr., Robert L. Hall, Gary P. Bickford