Patents by Inventor Alan G. Tolman

Alan G. Tolman 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).

  • Broad band acoustic attenuator
    Patent number: 4244441
    Abstract: A broad band acoustic attenuator particularly useful for attenuating gas turbine engine noise utilizes a plurality of axially extending, open-ended, perforated cylinders concentrically arranged within the exhaust duct of the gas turbine engine for attenuating noise therefrom without imposing significant back pressure penalties.
    Type: Grant
    Filed: July 31, 1979
    Date of Patent: January 13, 1981
    Assignee: The Garrett Corporation
    Inventor: Alan G. Tolman