Patents by Inventor Eric Herup

Eric Herup 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 of making composite chambercore sandwich-type structure with inherent acoustic attenuation
    Patent number: 6231710
    Abstract: An innovative new structure, called ChamberCore, is disclosed that is damage tolerant, easy to manufacture, and has an inherent design feature that can be exploited to drastically reduce acoustic transmission through the structure. The structure is composed of previously cured tubes that are sectioned to form chambers and co-cured with facesheets to form a sandwich-type structure. Damage tolerance is derived from the fact that the structure has no weak facesheet-core interface as found in traditional sandwich-type structures. Additionally, each chamber has a hole to it through the inner facesheet effectively converting it into a Helmholtz resonator. These resonators can be tuned to attenuate broadband or specific acoustic transmission through the structure.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: May 15, 2001
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Eric Herup, Steven Huybrechts, Steven Griffin, Stephen Tsai