Patents by Inventor Philippe P. Avignon

Philippe P. Avignon 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).

  • Acoustic panel for sound insulating linings of gas ducts
    Patent number: 4858721
    Abstract: A sound insulating lining for a gas flow path, particularly the bypass flow ath in a jet engine, is made up of a succession of acoustic panels including a perforated skin bonded to a stiffening frame, and a cellular structure formed by a ribbed skin clamped with prestressing via of resilient tongues to transverse struts of the stiffening frame so that the ribs engage the perforated skin to form resonant acoustic cavities. The panels forming the lining are screwed to the casing constituting the wall of the flow path to be insulated.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: August 22, 1989
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation
    Inventors: Pascal J. M. Autie, Philippe P. Avignon, Dominique P. Camusso, Alexandre Forestier, Gilles Ulryck