Patents by Inventor Thomas Freiwald

Thomas Freiwald 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).

  • Mechanical time delay security latches and methods
    Patent number: 11926433
    Abstract: A time-delay latch for securing a structure in a specified position includes a housing, a fluid chamber contained within the housing for holding fluid, a pin that extends through the fluid chamber and is axially movable within and through the fluid chamber, and a release frame movably secured within the housing. When the pin is in a latched position, the release frame engages with the pin to prevent axial movement of the pin. When the pin is in an unlatched position, the release frame disengages from the pin to allow axial movement of the pin. The axial movement of the pin between the latched position and the unlatched position requires a prescribed duration of time to elapse. During operation, the axial movement of the pin between the unlatched position and the latched position can occur faster than the prescribed duration of time.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: March 12, 2024
    Assignees: Airbus Americas, Inc., Airbus Operations GmbH
    Inventors: John A. Brewster, Thomas Freiwald, Christian Holst
  • MECHANICAL TIME DELAY SECURITY LATCHES AND METHODS
    Publication number: 20230036826
    Abstract: A time-delay latch for securing a structure in a specified position includes a housing, a fluid chamber contained within the housing for holding fluid, a pin that extends through the fluid chamber and is axially movable within and through the fluid chamber, and a release frame movably secured within the housing. When the pin is in a latched position, the release frame engages with the pin to prevent axial movement of the pin. When the pin is in an unlatched position, the release frame disengages from the pin to allow axial movement of the pin. The axial movement of the pin between the latched position and the unlatched position requires a prescribed duration of time to elapse. During operation, the axial movement of the pin between the unlatched position and the latched position can occur faster than the prescribed duration of time.
    Type: Application
    Filed: July 30, 2021
    Publication date: February 2, 2023
    Inventors: John A. Brewster, Thomas Freiwald, Christian Holst