Patents by Inventor Lee W. Dean, III

Lee W. Dean, III 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 suppressor liners
    Patent number: 4189027
    Abstract: This invention relates to acoustic liners having a plurality of cavities defining Helmholtz resonators in which the adjacent cavities are asymmetrical causing a pressure imbalance across the coupling means (tube, slot or aperture) between these cavities in the frequency range of interest. Such liners are particularly useful in turbofan engine noise reduction applications where low frequencies are encountered.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: February 19, 1980
    Assignee: United Technologies Corporation
    Inventors: Lee W. Dean, III, Aldo A. Peracchio
  • Sound suppressor liners
    Patent number: 4135603
    Abstract: This invention relates to acoustic liners having a plurality of cavities defining Helmholtz resonators in which the adjacent cavities are asymmetrical causing a pressure imbalance across the coupling means (tube, slot or aperture) between these cavities in the frequency range of interest. Such liners are particularly useful in turbofan engine noise reduction applications where low frequencies are encountered.
    Type: Grant
    Filed: August 19, 1976
    Date of Patent: January 23, 1979
    Assignee: United Technologies Corporation
    Inventors: Lee W. Dean, III, Aldo A. Peracchio