Patents by Inventor Nathan Drummond

Nathan Drummond 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).

  • Holistic control for stabilizing vehicle-trailer swaying
    Patent number: 8326504
    Abstract: A trailer sway intervention system. The trailer sway intervention system includes a trailer having a plurality of wheels, each wheel having a brake, and a vehicle towing the trailer. The vehicle includes a plurality of sensors configured to sense operating characteristics of the vehicle, and a controller. The controller receives the sensed operating characteristics from the sensors, determines an error based on a difference between an expected yaw rate and a sensed yaw rate, asymmetrically applies braking forces to one or more trailer wheels based on the difference, and symmetrically applies braking forces to the trailer wheels when the absolute value of the difference between the expected yaw rate and the sensed yaw rate is declining.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: December 4, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Hsien-cheng Wu, Jin-jae Chen, Nathan Drummond
  • HOLISTIC CONTROL FOR STABILIZING VEHICLE-TRAILER SWAYING
    Publication number: 20110029210
    Abstract: A trailer sway intervention system. The trailer sway intervention system includes a trailer having a plurality of wheels, each wheel having a brake, and a vehicle towing the trailer. The vehicle includes a plurality of sensors configured to sense operating characteristics of the vehicle, and a controller. The controller receives the sensed operating characteristics from the sensors, determines an error based on a difference between an expected yaw rate and a sensed yaw rate, asymmetrically applies braking forces to one or more trailer wheels based on the difference, and symmetrically applies braking forces to the trailer wheels when the absolute value of the difference between the expected yaw rate and the sensed yaw rate is declining.
    Type: Application
    Filed: July 30, 2009
    Publication date: February 3, 2011
    Inventors: Hsien-cheng Wu, Jin-jae Chen, Nathan Drummond