Patents by Inventor Stephen T. Buchanan

Stephen T. Buchanan 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: 12332136
    Abstract: A method is provided for determining a magnitude of a mass to be placed on a wheel assembly using data from one or more inertial measurement units (IMU's). The one or more IMU's are mounted to a removably attachable object that is attached to a wheel of the vehicle in a manner that inhibits the object from coming off of the vehicle when the vehicle is in motion. Each of the IMU's include an accelerometer. A set of acceleration data is collected from the one or more IMU's while the vehicle is in motion. The acceleration data is applied to a predictive model to determine the magnitude of the mass.
    Type: Grant
    Filed: December 29, 2023
    Date of Patent: June 17, 2025
    Assignee: NVH TECHNOLOGY LLC
    Inventors: Saptak Das, Rishi Kumar, Raj Methi, Elijah Daniel Wright, Eric L. Canfield, Robert P. Alston, David A. Fenimore, Stephen T. Buchanan
  • Publication number: 20250172450
    Abstract: A method is provided for determining a magnitude of a mass to be placed on a wheel assembly using data from one or more inertial measurement units (IMU's). The one or more IMU's are mounted to a removably attachable object that is attached to a wheel of the vehicle in a manner that inhibits the object from coming off of the vehicle when the vehicle is in motion. Each of the IMU's include an accelerometer. A set of acceleration data is collected from the one or more IMU's while the vehicle is in motion. The acceleration data is applied to a predictive model to determine the magnitude of the mass.
    Type: Application
    Filed: December 29, 2023
    Publication date: May 29, 2025
    Inventors: Saptak DAS, Rishi KUMAR, Raj METHI, Elijah Daniel WRIGHT, Eric l. CANFIELD, Robert P. ALSTON, David A. FENIMORE, Stephen T. BUCHANAN
  • Publication number: 20250172457
    Abstract: A method is provided for detecting vibrational anomalies of a vehicle using a plurality of devices that are removably attachable to the vehicle. One of the devices is removably attachable to a wheel assembly and includes an IMU configured to remotely collect data. At least one of the other devices is not attached to any of the wheel assemblies. Acceleration data is collected from the device that is removably attachable to the wheel assembly. Vibrational data is collected from at least one of the other devices that are not attached to any of the wheel assemblies. The acceleration data is analyzed from the device that is removably attachable to the wheel assembly to determine whether a vibrational anomaly exists in the wheel assembly. The vibrational data from the at least one of the other devices that are not attached to any of the wheel assemblies is analyzed to determine whether a vibrational anomaly exists.
    Type: Application
    Filed: December 29, 2023
    Publication date: May 29, 2025
    Inventors: David A. FENIMORE, Saptak DAS, Rishi KUMAR, Raj METHI, Elijah Daniel WRIGHT, Eric L. CANFIELD, Robert P. ALSTON, Stephen T. BUCHANAN
  • Publication number: 20250145188
    Abstract: A method is provided for determining anomalies associated with railcar wheels of a railcar wheelset, or a railcar bogie assembly that the railcar wheelset is part of, or a track, during motion of the railcar wheelset on a track. An apparatus is removably attached to an axle of a railcar wheelset. The apparatus includes an axle-mounted sensor cuff. The sensor cuff includes one or more sensors, such as inertial measurement units (IMU's), mounted thereto to measure parameters that are used for determining the anomalies during motion of the railcar wheel on the track. The railcar wheelset is moved on the track. Measured parameters are collected from the one or more sensors and are used for determining the anomalies during motion of the railcar wheelset on the track.
    Type: Application
    Filed: November 18, 2024
    Publication date: May 8, 2025
    Inventors: Stephen T. BUCHANAN, Eric CANFIELD
  • Patent number: 12181368
    Abstract: An apparatus is removably attached to lug nuts of a vehicle's wheel assembly for use in determining imbalance forces of the wheel assembly during motion of the vehicle. The apparatus includes a plurality of data collection devices. Each data collection device is removably attachable to one lug nut of the same wheel. Each data collection device includes a single cup-shaped object and a motion measurement sensor. The data collection object is mounted to the vehicle's wheel by fitting the cup-shaped object over the lug nut of the wheel. The motion measurement sensor measures parameters that are used for calculating the imbalance forces during motion of the vehicle. A processor receives the measured parameters from motion measurement sensors of each of the data collection devices and uses the measured parameters to identify an instantaneous center of rotation of the wheel assembly for use in determining imbalance forces of the wheel assembly of the vehicle during motion of the vehicle.
    Type: Grant
    Filed: March 18, 2024
    Date of Patent: December 31, 2024
    Assignee: NVH TECHNOLOGY LLC
    Inventors: Stephen T. Buchanan, Saptak Das, Rishi Kumar, Raj Methi, Thomas S. Buchanan, Eric L. Canfield, Robert P. Alston, David A. Fenimore
  • Patent number: 12145639
    Abstract: A method is provided for determining anomalies associated with a railcar wheel of a railcar wheelset, or a railcar bogie assembly that the railcar wheelset is part of, or a track, during motion of the railcar wheelset on a track. A wheel-mounted sensor ring is removably attached to a hub portion of a railcar wheel of a railcar wheelset. The sensor ring includes one or more sensors, such as inertial measurement units (IMU's), mounted thereto to measure parameters that are used for determining the anomalies during motion of the railcar wheel on the track. The railcar wheelset is moved on the track. The measured parameters are collected from the one or more sensors. The measured parameters are used for determining the anomalies during motion of the railcar wheel on the track.
    Type: Grant
    Filed: August 14, 2023
    Date of Patent: November 19, 2024
    Assignee: NVH TECHNOLOGY LLC
    Inventors: Stephen T. Buchanan, Eric L. Canfield
  • Patent number: 11988573
    Abstract: A method is provided for determining a location to place a mass on a wheel assembly. A first set of acceleration data is collected from a plurality of inertial measurement units (IMU's) that are mounted to a removably attachable object that is attached to a wheel of the vehicle in a manner that inhibits the object from coming off of the vehicle when the vehicle is in motion. The first set of acceleration data is collected while operating the vehicle at a first speed. The first set of acceleration data is used to determine an offset between a center of the object and a bearing center of the wheel assembly. A second set of acceleration data is collected from the plurality of inertial measurement units (IMU's). The second set of acceleration data is collected while operating the vehicle at second speed that is greater than the first speed.
    Type: Grant
    Filed: December 29, 2023
    Date of Patent: May 21, 2024
    Assignee: NVH TECHNOLOGY LLC
    Inventors: Rishi Kumar, Saptak Das, Raj Methi, Elijah Daniel Wright, Eric L. Canfield, Robert P. Alston, David A. Fenimore, Stephen T. Buchanan
  • Publication number: 20240109565
    Abstract: An axle-mounted sensor cuff is configured to be removably attachable to a hub portion of a railcar wheel of a railcar wheelset for use in determining anomalies associated with the railcar wheel, or a railcar bogie assembly that the railcar wheelset is part of, or a track, during motion of the railcar wheelset on a track. The sensor cuff includes one or more sensors, such as inertial measurement units (IMU's), mounted thereto to measure parameters that are used for determining the anomalies during motion of the railcar wheel on the track. In addition, a wheel-mounted sensor ring is configured to be removably attachable to a hub portion of a railcar wheel of a railcar wheelset for use in determining anomalies associated with the railcar wheel, or a railcar bogie assembly that the railcar wheelset is part of, or a track, during motion of the railcar wheelset on a track.
    Type: Application
    Filed: August 14, 2023
    Publication date: April 4, 2024
    Inventors: Stephen T. BUCHANAN, Eric L. CANFIELD
  • Patent number: 11890766
    Abstract: A modular fabrication tool for prefabricating insulation for a duct segment includes at least three interchangeable and detachably connected panels, each panel of the at least three panels corresponding to a respective side of the duct segment. Each panel includes at least one of a connecting bar extending beyond a periphery of the respective panel or a connecting track. A connecting bar of one panel is received by a connecting track of a neighboring panel when two neighboring panels are properly positioned, adjoined together, whereby a retaining pin of the tool is advanceable through aligned, respective apertures of the connecting track and the connecting bar received therein.
    Type: Grant
    Filed: December 14, 2022
    Date of Patent: February 6, 2024
    Assignee: NTH SOLUTIONS, LLC
    Inventors: Nicholas R. Jackson, Stephen T. Buchanan, Eric L Canfield
  • Patent number: 11731673
    Abstract: A wheel-mounted sensor ring is configured to be removably attachable to a hub portion of a railcar wheel of a railcar wheelset for use in determining anomalies associated with the railcar wheel, or a railcar bogie assembly that the railcar wheelset is part of, or a track, during motion of the railcar wheelset on a track. The sensor ring includes one or more sensors, such as inertial measurement units (IMU's), mounted thereto to measure parameters that are used for determining the anomalies during motion of the railcar wheel on the track.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: August 22, 2023
    Assignee: BALANCED ENGINEERING SOLUTION, LLC
    Inventors: Stephen T. Buchanan, Eric L. Canfield
  • Patent number: 11656156
    Abstract: An axle-mounted sensor cuff is configured to be removably attachable to a hub portion of a railcar wheel of a railcar wheelset for use in determining anomalies associated with the railcar wheel, or a railcar bogie assembly that the railcar wheelset is part of, or a track, during motion of the railcar wheelset on a track. The sensor cuff includes one or more sensors, such as inertial measurement units (IMU's), mounted thereto to measure parameters that are used for determining the anomalies during motion of the railcar wheel on the track.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: May 23, 2023
    Assignee: BALANCED ENGINEERING SOLUTION, LLC
    Inventors: Stephen T. Buchanan, Eric L. Canfield