Patents by Inventor Graham Eatwell

Graham Eatwell 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).

  • Vibration excited sound absorber with dynamic tuning
    Publication number: 20070014418
    Abstract: Sound radiation from a region of a vibrating surface is reduced by coupling a stiff structure to the vibrating surface using a first compliant element, such that the region of the vibrating surface is substantially covered. A dynamic force is applied to the stiff structure. The dynamic force reacts against a mass element and is selected to minimize the radiated sound. The dynamic force may be applied using a passive, semi-active or active coupling between the mass element and the stiff structure.
    Type: Application
    Filed: July 11, 2006
    Publication date: January 18, 2007
    Inventors: Graham Eatwell, Ralph Busch
  • Active high transmission loss panel
    Patent number: 5315661
    Abstract: An active high transmission loss panel for quieting either one or two way sound radiation which incorporates a number of cells (11) which contain sensors and actuators (12) adapted to be controlled independently or interactively so as to attenuate noise attempting to pass through said panel.
    Type: Grant
    Filed: August 12, 1992
    Date of Patent: May 24, 1994
    Assignee: Noise Cancellation Technologies, Inc.
    Inventors: William Gossman, Graham Eatwell