Patents by Inventor Kevin P. Shepherd

Kevin P. Shepherd 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).

  • Sound attenuation apparatus
    Patent number: 5024288
    Abstract: Apparatus for reducing acoustic transmission from mechanical or acoustic sources by means of a double wall partition, within which an acoustic pressure field is generated by at least one secondary acoustic source. The secondary acoustic source is advantageously placed within the partition, around its edges, or it may be an integral part of a wall of the partition.
    Type: Grant
    Filed: August 10, 1989
    Date of Patent: June 18, 1991
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Kevin P. Shepherd, Ferdinand M. W. A. Grosveld