Patents by Inventor Eric M. Bogert

Eric M. Bogert 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).

  • Propulsor external hydraulic control system
    Patent number: 12600469
    Abstract: A rotor assembly for a rotary wing aircraft includes a rotor hub including a hub arm and a central opening. The rotor assembly further includes a hydraulic actuation cylinder positioned in the central opening, a pitch change shaft assembly including a pitch change shaft positioned partially within the hydraulic actuation cylinder, a pitch beam coupled to a distal end of the pitch change shaft and configured to be coupled to a rotor blade rotatably mounted to the hub arm. The rotor assembly additionally includes at least one guide rod coupled to the rotor hub and slidably coupled to an opening in the pitch change shaft.
    Type: Grant
    Filed: August 29, 2023
    Date of Patent: April 14, 2026
    Assignee: LOCKHEED MARTIN CORPORATION
    Inventors: Daniel George Schuster, David N. Schmaling, Evan S. Tobin, Eric M. Bogert
  • PROPULSOR EXTERNAL HYDRAULIC CONTROL SYSTEM
    Publication number: 20250074583
    Abstract: A rotor assembly for a rotary wing aircraft includes a rotor hub including a hub arm and a central opening. The rotor assembly further includes a hydraulic actuation cylinder positioned in the central opening, a pitch change shaft assembly including a pitch change shaft positioned partially within the hydraulic actuation cylinder, a pitch beam coupled to a distal end of the pitch change shaft and configured to be coupled to a rotor blade rotatably mounted to the hub arm. The rotor assembly additionally includes at least one guide rod coupled to the rotor hub and slidably coupled to an opening in the pitch change shaft.
    Type: Application
    Filed: August 29, 2023
    Publication date: March 6, 2025
    Applicant: Lockheed Martin Corporation
    Inventors: Daniel George Schuster, David N. Schmaling, Evan S. Tobin, Eric M. Bogert