Patents by Inventor Christopher Charles Pierce

Christopher Charles Pierce 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: 11702197
    Abstract: A coaxial split torque gearbox comprises a first pinion meshed with a first gear; a second pinion attached to the first gear and meshed with a first bull gear, the first bull gear operable for transferring torque to cause a first rotor to rotate; and a third pinion attached to a second gear and meshed with a second bull gear, the second bull gear operable for transferring torque to cause a second rotor to rotate, the second gear being meshed with the first gear, and a number of teeth of the first gear being different than a number of teeth of the second gear.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: July 18, 2023
    Assignee: LOCKHEED MARTIN CORPORATION
    Inventors: Yuriy Gmirya, Christopher Charles Pierce, Peter X. Palcic
  • Publication number: 20210291972
    Abstract: An aspect includes, a coaxial split torque gearbox comprises a first pinion meshed with a first gear; a second pinion attached to the first gear and meshed with a first bull gear, the first bull gear operable for transferring torque to cause a first rotor to rotate; and a third pinion attached to a second gear and meshed with a second bull gear, the second bull gear operable for transferring torque to cause a second rotor to rotate, the second gear being meshed with the first gear, and a number of teeth of the first gear being different than a number of teeth of the second gear.
    Type: Application
    Filed: March 19, 2020
    Publication date: September 23, 2021
    Inventors: Yuriy Gmirya, Christopher Charles Pierce, Peter X. Palcic