Patents by Inventor Marc Runfola

Marc Runfola 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).

  • Patent number: 6938888
    Abstract: The invention relates to a vibration damper, in particular for a helicopter rotor, the damper comprising both a driving element and a rigid element and including a damper assembly functionally interconnecting the driving element and the rigid element, the damper assembly comprising firstly a hydraulic damper device disposed in at least one viscous fluid cavity and a laminated flexible device. The hydraulic damper device comprises first and second sets of interleaved plane vanes. In the invention, the hydraulic damper device also has at least one damper element which is disposed in one of said viscous fluid cavities and which is secured to the driving element, said damper element presenting an outer outline which tapers going away from a base situated beside one axial end of the damper towards an apex situated beside the sets of plane vanes.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: September 6, 2005
    Assignee: Hutchinson
    Inventors: Patrice Levallard, Thierry Sieg, Marc Runfola
  • Publication number: 20010022418
    Abstract: The invention relates to a vibration damper, in particular for a helicopter rotor, the damper comprising both a driving element and a rigid element and including a damper assembly functionally interconnecting the driving element and the rigid element, the damper assembly comprising firstly a hydraulic damper device disposed in at least one viscous fluid cavity and a laminated flexible device. The hydraulic damper device comprises first and second sets of interleaved plane vanes. In the invention, the hydraulic damper device also has at least one damper element which is disposed in one of said viscous fluid cavities and which is secured to the driving element, said damper element presenting an outer outline which tapers going away from a base situated beside one axial end of the damper towards an apex situated beside the sets of plane vanes.
    Type: Application
    Filed: March 16, 2001
    Publication date: September 20, 2001
    Applicant: HUTCHINSON
    Inventors: Patrice Levallard, Thierry Sieg, Marc Runfola