Patents by Inventor James R. Shackleton

James R. Shackleton 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).

  • Method and apparatus for sensing sound waves in a fluid medium
    Patent number: 5132941
    Abstract: A method and apparatus (10) for sensing sound in a fluid medium. The apparatus (10) includes an element (12) for generating polarized light having a predetermined plane of polarization. In addition, the apparatus (10) further includes an element (14) for rotating the plane of polarized light in response to sound waves propagating in the fluid medium, as well as an element (32) for detecting the polarized light. Finally, the apparatus (10) includes an element (34) for generating a signal from the output of the detecting element (32) which is indicative of the amplitude and frequency of the sound waves.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: July 21, 1992
    Assignee: Hughes Aircraft Company
    Inventor: James R. Shackleton