Patents by Inventor David T. De Carteret

David T. De Carteret 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: 10967698
    Abstract: An exemplary self-balancing air spring includes a first chamber, the first chamber defining a primary volume, the first chamber including a movable piston, a second chamber fluidicly coupled to the first chamber via a first orifice and a second orifice, the second chamber defining a secondary volume, and an actuator coupled to the movable piston. In some aspects, the first orifice is an electromechanical valve and the second orifice is a bleed valve that equalizes the pressure between the first and second chambers.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: April 6, 2021
    Assignee: GM Global Technology Operations LLC
    Inventors: David T. De Carteret, Brian K. Saylor
  • Publication number: 20200180383
    Abstract: An exemplary self-balancing air spring includes a first chamber, the first chamber defining a primary volume, the first chamber including a movable piston, a second chamber fluidicly coupled to the first chamber via a first orifice and a second orifice, the second chamber defining a secondary volume, and an actuator coupled to the movable piston. In some aspects, the first orifice is an electromechanical valve and the second orifice is a bleed valve that equalizes the pressure between the first and second chambers.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 11, 2020
    Inventors: David T. De Carteret, Brian K. Saylor
  • Publication number: 20200158507
    Abstract: In accordance with certain embodiments, a vehicle is provided that includes a location system, an operation system, and a processor. The location system is configured to obtain location data pertaining to the vehicle. The operation system is configured to provide a feature for operation of the vehicle. The processor is coupled to the location system and the operation system, and is configured to: identify a point of interest in proximity to the vehicle based on the location data; determine a category to which the point of interest belongs; and provide instructions for the operation system to initiate a setting for the feature for operation of the vehicle based on the category for the point of interest that is in proximity to the vehicle and a history of the vehicle.
    Type: Application
    Filed: November 19, 2018
    Publication date: May 21, 2020
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: David T. De Carteret, Adam D. Stanton
  • Patent number: 10597070
    Abstract: Embodiments discussed herein enable detection of traction steer using measured and expected values of steering system data, such as, for example and without limitation, motor current, motor torque, motor position, motor velocity, steering wheel angle, and steering column torque. In some embodiments, the measured steering system data is compared to expected signal values, based on vehicle operating conditions, to determine if the vehicle is experiencing a traction steer event. In some embodiments, using known relationships between two or more steering system signals, a traction steer event is identified if an unexpected relationship is determined.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: March 24, 2020
    Assignee: GM Global Technology Operations LLC
    Inventors: David T. De Carteret, Gregory K. Peterson
  • Publication number: 20190366790
    Abstract: Examples of techniques for controlling vehicle pitch while the vehicle is towing a trailer are disclosed. In one example implementation according to aspects of the present disclosure, a computer-implemented method includes detecting, by a processing device, a trailer attached to a vehicle. The method further includes responsive to detecting the trailer attached to the vehicle, detecting, by the processing device, a pitch event. The method further includes when a pitch event is detected, determining, by the processing device, whether the pitch event exceeds a pitch threshold. The method further includes, responsive to determining that the pitch event exceeds the pitch threshold, adjusting, by the processing device, a vehicle pitch control device associated with the vehicle to counteract the pitch event for the vehicle and the trailer.
    Type: Application
    Filed: June 5, 2018
    Publication date: December 5, 2019
    Inventors: Brian K. Saylor, Robert G. Izak, Matthew G. Kowal, David T. De Carteret
  • Publication number: 20190100236
    Abstract: Embodiments discussed herein enable detection of traction steer using measured and expected values of steering system data, such as, for example and without limitation, motor current, motor torque, motor position, motor velocity, steering wheel angle, and steering column torque. In some embodiments, the measured steering system data is compared to expected signal values, based on vehicle operating conditions, to determine if the vehicle is experiencing a traction steer event. In some embodiments, using known relationships between two or more steering system signals, a traction steer event is identified if an unexpected relationship is determined.
    Type: Application
    Filed: September 29, 2017
    Publication date: April 4, 2019
    Inventors: David T. De Carteret, Gregory K. Peterson
  • Patent number: 8051687
    Abstract: A system, method, and computer program product for detecting and compensating for a traction steer event is provided. A first wheel speed of a first driven wheel is compared with a second wheel speed of a second driven wheel to determine whether a wheel slip condition has occurred. If a wheel slip condition is determined to have occurred, a current operating state of a vehicle is compared to an expected operating state of the vehicle to determine if a traction steer event has occurred. If a traction steer event is determined to have occurred, brake pressure is selectively applied to the first or second driven wheel to compensate for the traction steer event.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: November 8, 2011
    Assignee: GM Global Technology Operations LLC
    Inventors: David T. De Carteret, Larry G. Gepfrey, Gregory K. Peterson, Mark S. Hogle
  • Publication number: 20090112436
    Abstract: A system, method, and computer program product for detecting and compensating for a traction steer event is provided. A first wheel speed of a first driven wheel is compared with a second wheel speed of a second driven wheel to determine whether a wheel slip condition has occurred. If a wheel slip condition is determined to have occurred, a current operating state of a vehicle is compared to an expected operating state of the vehicle to determine if a traction steer event has occurred. If a traction steer event is determined to have occurred, brake pressure is selectively applied to the first or second driven wheel to compensate for the traction steer event.
    Type: Application
    Filed: October 31, 2007
    Publication date: April 30, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: DAVID T. DE CARTERET, LARRY G. GEPFREY, GREGORY K. PETERSON, MARK S. HOGLE