Patents by Inventor Jacob Adam FEHRMAN

Jacob Adam FEHRMAN 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).

  • Tunable mass damper assembly for a rotor blade
    Patent number: 12330776
    Abstract: A tunable mass damper assembly is attachable to a rotor blade. The tunable mass damper assembly comprises a base configured to be attached to the rotor blade and a pendulum mass structure movably attached to the base and configured to move relative to the base in accordance with a rotational speed of the rotor blade about a rotor axis. The pendulum mass structure is configured to reduce vibratory forces of the rotor blade induced by a rotation of the rotor blade about the rotor axis. An entirety of the pendulum mass structure being configured to be contained within and enclosed by the rotor blade.
    Type: Grant
    Filed: April 16, 2021
    Date of Patent: June 17, 2025
    Assignee: LOCKHEED MARTIN CORPORATION
    Inventors: John C. Cox, Steven P. Lozano, David H. Hunter, Emmett Emile Menair, Jacob Adam Fehrman, John Devin Carroll
  • TUNABLE MASS DAMPER ASSEMBLY FOR A ROTOR BLADE
    Publication number: 20220332409
    Abstract: A tunable mass damper assembly is attachable to a rotor blade. The tunable mass damper assembly comprises a base configured to be attached to the rotor blade and a pendulum mass structure movably attached to the base and configured to move relative to the base in accordance with a rotational speed of the rotor blade about a rotor axis. The pendulum mass structure is configured to reduce vibratory forces of the rotor blade induced by a rotation of the rotor blade about the rotor axis. An entirety of the pendulum mass structure being configured to be contained within and enclosed by the rotor blade.
    Type: Application
    Filed: April 16, 2021
    Publication date: October 20, 2022
    Inventors: John C. COX, Steven P. LOZANO, David H. HUNTER, Emmett Emile MENAIR, Jacob Adam FEHRMAN, John Devin CARROLL