Patents by Inventor David Martin Armstrong

David Martin Armstrong 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).

  • Drag detection by electrical parameters
    Patent number: 11850948
    Abstract: Drag Detection is provided. A system includes one or more processors of a vehicle, coupled with memory. The one or more processors can determine, for a vehicle, rolling drag based on energy input to one or more motors of the vehicle and a speed of the vehicle. The one or more processors can select, based on the rolling drag and a friction level associated with a surface on which the vehicle traverses, a slip target for the vehicle. The one or more processors can provide the slip target to a traction control system of the vehicle to control the one or more motors.
    Type: Grant
    Filed: June 28, 2023
    Date of Patent: December 26, 2023
    Assignee: RIVIAN IP HOLDINGS, LLC
    Inventors: Quentin Arthur Cradock Watson Spottiswoode, David Martin Armstrong