Patents by Inventor Arnaud Varin D'Ainvelle

Arnaud Varin D'Ainvelle 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).

  • Device for reducing the vibration generated by a rotorcraft lift rotor, and a rotor hub provided with such a device
    Patent number: 8899928
    Abstract: A device (10) for reducing the vibration of a rotorcraft main rotor (1) provided with a hub (2) and a plurality of blades, said device having a support (20) together with at least one weight element (30). Said weight element (30) is fastened to said support (20) by connection means (40), and said weight element (30) is connected to said connection means (40) by guide means (50) for guiding said weight element (30) in movement in circular translation in a filter plane (P1) that is movable perpendicularly to an elevation axis (AX) of said device (10), said connection means (40) including resilient return means (41) serving to allow said filter plane (P1) to move in elevation while keeping the filter plane (P1) perpendicular to said elevation axis (AX) under the effect of said vibration.
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: December 2, 2014
    Assignee: Airbus Helicopters
    Inventors: Vincent Girard, Arnaud Varin D'Ainvelle
  • DEVICE FOR REDUCING THE VIBRATION GENERATED BY A ROTORCRAFT LIFT ROTOR, AND A ROTOR HUB PROVIDED WITH SUCH A DEVICE
    Publication number: 20110268573
    Abstract: A device (10) for reducing the vibration of a rotorcraft main rotor (1) provided with a hub (2) and a plurality of blades, said device having a support (20) together with at least one weight element (30). Said weight element (30) is fastened to said support (20) by connection means (40), and said weight element (30) is connected to said connection means (40) by guide means (50) for guiding said weight element (30) in movement in circular translation in a filter plane (P1) that is movable perpendicularly to an elevation axis (AX) of said device (10), said connection means (40) including resilient return means (41) serving to allow said filter plane (P1) to move in elevation while keeping the filter plane (P1) perpendicular to said elevation axis (AX) under the effect of said vibration.
    Type: Application
    Filed: April 19, 2011
    Publication date: November 3, 2011
    Applicant: EUROCOPTER
    Inventors: Vincent Girard, Arnaud Varin D'Ainvelle