Patents by Inventor Nathaniel Doy

Nathaniel Doy 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).

  • Publication number: 20240407067
    Abstract: A method, for operating an indicator light mounted to an exterior of a work machine, includes receiving, by a controller, a digital input image of an environment surrounding the work machine from an image capturing device. Also, the method includes processing, by the controller, the digital input image to determine an ambient light intensity of the environment. In addition, the method includes generating, by the controller, based on the determined ambient light intensity of the environment, one or more control signals to correspondingly adjust at least one attribute of light output by the indicator light.
    Type: Application
    Filed: June 2, 2023
    Publication date: December 5, 2024
    Applicant: Caterpillar Paving Products Inc.
    Inventors: Nathaniel Doy, Micheal David Valerio
  • Patent number: 11815059
    Abstract: In some implementations, a controller may determine whether a machine is operating in an autonomous mode or a manual mode. The controller may cause, based on a determination that the machine has been in an idle state for a first timer period, shutdown of an engine of the machine. The controller may monitor, based on a determination that the machine is operating in the autonomous mode, whether a condition for starting the engine is satisfied. The controller may cause, based on a determination that the engine has been shut down for a second timer period and that the condition is not satisfied, the machine to transition to a low power mode. The controller may cause, when the condition is satisfied, starting of the engine.
    Type: Grant
    Filed: February 4, 2022
    Date of Patent: November 14, 2023
    Assignee: Caterpillar Paving Products Inc.
    Inventor: Nathaniel Doy
  • Patent number: 11786945
    Abstract: A controller associated with a machine may determine that a first subset of nozzles, of a plurality of nozzles of the machine, is to be cleaned. The controller may determine a first flow rate of the fluid through the first subset of nozzles and increase, based on determining that the first subset of nozzles is to be cleaned, the first flow rate of the fluid through the first subset of nozzles to a second flow rate of the fluid through the first subset of nozzles. The controller may decrease the second flow rate of the fluid through the first subset of nozzles to the first flow rate of the fluid through the first subset of nozzles when the first subset of nozzles is cleaned.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: October 17, 2023
    Assignee: Caterpillar Paving Products Inc.
    Inventor: Nathaniel Doy
  • Patent number: 11768289
    Abstract: A work machine, light detection and ranging (LiDAR) system, and method of reducing false object detections are disclosed. The work machine may include a frame, a power unit, a locomotive device, and the LiDAR system. The LiDAR system may include at least one laser, at least one sensor, a bracket, and a control unit configured to execute an object detection program. The LiDAR system is configured to exclude from its object detection program a plurality of beams emitted toward the work machine through a design of the bracket and/or software methods of the control unit. The method may include storing a database of exclude coordinates and using the database to filter out undesirable data samples from the object detection program.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: September 26, 2023
    Assignee: Caterpillar Paving Products Inc.
    Inventors: Todd A. Impola, Siddarth Desikan, Nathaniel Doy, Lawrence A. Mianzo, Mark E. Hartman, Shanmukha Bhumireddy, Sri Sekharan
  • Patent number: 11613856
    Abstract: A milling machine, system, and method for implementing a return to cut operation and/or an exit cut operation controls legs of the milling machine, a rotor of the milling machine, and front and rear doors of a mixing chamber of the milling machine according to settings for each of the return to cut operation and the exit cut operation. Such control can be based on signals from one or more sensors of the milling machine configured to sense various position-related characteristics of the milling machine, and can be performed responsive to a control input at an operator control interface of the milling machine.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: March 28, 2023
    Assignee: Caterpillar Paving Products Inc.
    Inventors: Nathaniel Doy, Lee M. Hogan, Jason W. Muir, Hyppolite Kuissi, Timothy Michael O'Donnell, Matthew-David S. Frantz, Jacob M. Saari
  • Patent number: 11572947
    Abstract: In some implementations, a controller may cause a gearbox coupled to a rotor to shift between a first gear ratio and a second gear ratio one or more times. The controller may obtain a first set of position data that identifies respective first positions of a gear selector of the gearbox for each shift to the first gear ratio, and a second set of position data that identifies respective second positions of the gear selector of the gearbox for each shift to the second gear ratio. The controller may determine a first calibrated position of the gear selector for a shift to the first gear ratio based on the first set of position data and a second calibrated position of the gear selector for a shift to the second gear ratio based on the second set of position data.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: February 7, 2023
    Assignee: Caterpillar Paving Products Inc.
    Inventors: Ryan Adam Enot, Nathaniel Doy, Brian Joe Schlenker
  • Publication number: 20220373680
    Abstract: A work machine, light detection and ranging (LiDAR) system, and method of reducing false object detections are disclosed. The work machine may include a frame, a power unit, a locomotive device, and the LiDAR system. The LiDAR system may include at least one laser, at least one sensor, a bracket, and a control unit configured to execute an object detection program. The LiDAR system is configured to exclude from its object detection program a plurality of beams emitted toward the work machine through a design of the bracket and/or software methods of the control unit. The method may include storing a database of exclude coordinates and using the database to filter out undesirable data samples from the object detection program.
    Type: Application
    Filed: May 24, 2021
    Publication date: November 24, 2022
    Applicant: Caterpillar Paving Products lnc.
    Inventors: Todd A. Impola, Siddarth Desikan, Nathaniel Doy, Lawrence A. Mianzo, Mark E. Hartman, Shanmukha Bhumireddy, Sri Sekharan
  • Patent number: 11225761
    Abstract: A milling machine, system, and method for adjusting a rotor cutting height adjusts the rotor cutting height to a target cutting height responsive to a control input received at an operator control interface. One or more legs of the milling machine and/or a height of the rotor can be adjusted to adjust the rotor cutting height to the target cutting height. The rotor cutting height can be adjusted based on data from one or more sensors. Each sensor may be a sonic sensor or an image capturing sensor.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: January 18, 2022
    Assignee: Caterpillar Paving Products Inc.
    Inventors: Nathaniel Doy, Jason W. Muir, Lee M. Hogan
  • Patent number: 11203841
    Abstract: A milling machine, system, and method for implementing an exit cut operation raises a rotor from a state where the rotor contacts ground surface material responsive to a control input at an operator control interface of the milling machine. The rate at which the rotor is raised can increase as the rotor is raised. When the rotor is determined to have reached a top surface of the ground surface material the rotor can be raised at a maximum rate.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: December 21, 2021
    Assignee: Caterpillar Paving Products Inc.
    Inventors: Nathaniel Doy, Jason W. Muir, Lee M. Hogan
  • Publication number: 20210310201
    Abstract: A milling machine, system, and method for implementing an exit cut operation raises a rotor from a state where the rotor contacts ground surface material responsive to a control input at an operator control interface of the milling machine. The rate at which the rotor is raised can increase as the rotor is raised. When the rotor is determined to have reached a top surface of the ground surface material the rotor can be raised at a maximum rate.
    Type: Application
    Filed: April 1, 2020
    Publication date: October 7, 2021
    Applicant: Caterpillar Paving Products Inc.
    Inventors: Nathaniel Doy, Jason W. Muir, Lee M. Hogan
  • Patent number: 10005395
    Abstract: A machine includes a machine body that includes an operator platform. The machine also includes an implement, a ladder moveable between a deployed position and a stowed position, and control unit configured to limit operation of the implement when the ladder is in the deployed position.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: June 26, 2018
    Assignee: Caterpillar Inc.
    Inventor: Nathaniel Doy
  • Publication number: 20170144604
    Abstract: A machine includes a machine body that includes an operator platform. The machine also includes an implement, a ladder moveable between a deployed position and a stowed position, and control unit configured to limit operation of the implement when the ladder is in the deployed position.
    Type: Application
    Filed: November 19, 2015
    Publication date: May 25, 2017
    Applicant: Caterpillar Inc.
    Inventor: Nathaniel Doy
  • Patent number: 9199616
    Abstract: The disclosure describes, in one aspect, a method for determining a machine ground speed. The method includes determining a first speed from a position determining system, determining a direction the machine is traveling at the first speed, determining a machine rate of inclination, and determining a compensated ground speed as a function of the first speed and the machine rate of inclination.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: December 1, 2015
    Assignee: Caterpillar Inc.
    Inventors: Nathaniel Doy, Erik Eddington, Eric Dishman, Robert Shockency
  • Patent number: 9086698
    Abstract: Optimum performance in an earth moving machine, such as a track-type tractor, is a function of many complex factors such as power delivered to the tracks, load, soil type, soil conditions, speed, terrain, etc. To determine an operating point associated with optimum performance, operational data may be collected, processed, and applied to known performance curves for well characterized conditions to develop recommended operating conditions. A coefficient of traction and a shear modulus adjustment, reflecting surface conditions, are calculated at the tractor during operation and used to offset a table of ideal condition operating points for use in soil characterizations. Using this and other inputs, a cycle power equation gives a curve that peaks at a theoretical optimum performance. However, the number of variables make an analytic solution impossible. An iterative approach determines a range of operating conditions associated with optimum performance.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: July 21, 2015
    Assignee: Caterpillar Inc.
    Inventors: Joseph Faivre, Nathaniel Doy
  • Patent number: 8965640
    Abstract: Real time determination of current vs. optimum performance in a track-type tractor is complex and requires information about both a state of the tractor and the operating environment, such as soil conditions. Presenting such data to an operator creates a problem of conveying sufficient information without undue complexity. A three part display for an operator shows a full range of performance, a subset range of performance associated with peak performance that is overlaid on the full range of performance, and a current performance indicator also overlaid on the full range of performance, such that peak performance is achieved when the current performance indicator is centered on the subset range of performance. The subset range of performance may move over the full range of performance to indicate operating conditions favoring a particular condition, e.g., low slip. An operator may then effect a change by adjusting, for example, speed or load.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: February 24, 2015
    Assignee: Caterpillar Inc.
    Inventors: Joseph Faivre, Nathaniel Doy, Lance Cowper
  • Patent number: 8914215
    Abstract: A method of measuring and displaying track-type tractor performance in real time calculates both a measure of work performance and a theoretical optimum work performance for a given input state, such as track speed. After estimating soil conditions, the theoretical optimum is estimated using an iterative technique. The optimum and current performance are normalized and displayed using a first bar representing a full range of work performance, a second bar depicting a range of optimum performance for current conditions is presented overlying the first bar, and an indicator line showing the current performance. This allows an operator to adjust speed or load accordingly. A coefficient of traction and a shear modulus adjustment, reflecting soil conditions, are calculated at the tractor during operation and used to offset a table of ideal condition operating points to produce the second bar.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: December 16, 2014
    Assignee: Caterpillar Inc.
    Inventors: Joseph Faivre, Nathaniel Doy, Lance Cowper
  • Patent number: 8855869
    Abstract: The disclosure describes, in one aspect, a method for determining a machine ground speed. The method includes determining a machine speed from a position determining system, the machine speed includes a horizontal speed component and a vertical speed component, determining a direction the machine is moving at the machine speed, determining a machine inclination angle, determining a machine rate of inclination, and determining a compensated ground speed as a function of the horizontal speed component, the vertical speed component, the direction, the machine inclination angle, and the machine rate of inclination.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: October 7, 2014
    Assignee: Caterpillar Inc.
    Inventors: Robert Shockency, Jr., Eric Dishman, Erik Eddington, Nathaniel Doy
  • Publication number: 20140156105
    Abstract: Real time determination of current vs. optimum performance in a track-type tractor is complex and requires information about both a state of the tractor and the operating environment, such as soil conditions. Presenting such data to an operator creates a problem of conveying sufficient information without undue complexity. A three part display for an operator shows a full range of performance, a subset range of performance associated with peak performance that is overlaid on the full range of performance, and a current performance indicator also overlaid on the full range of performance, such that peak performance is achieved when the current performance indicator is centered on the subset range of performance. The subset range of performance may move over the full range of performance to indicate operating conditions favoring a particular condition, e.g., low slip. An operator may then effect a change by adjusting, for example, speed or load.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 5, 2014
    Applicant: CATERPILLAR INC.
    Inventors: Joseph Faivre, Nathaniel Doy, Lance Cowper
  • Publication number: 20140156162
    Abstract: A method of measuring and displaying track-type tractor performance in real time calculates both a measure of work performance and a theoretical optimum work performance for a given input state, such as track speed. After estimating soil conditions, the theoretical optimum is estimated using an iterative technique. The optimum and current performance are normalized and displayed using a first bar representing a full range of work performance, a second bar depicting a range of optimum performance for current conditions is presented overlying the first bar, and an indicator line showing the current performance. This allows an operator to adjust speed or load accordingly. A coefficient of traction and a shear modulus adjustment, reflecting soil conditions, are calculated at the tractor during operation and used to offset a table of ideal condition operating points to produce the second bar.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 5, 2014
    Applicant: CATERPILLAR INC.
    Inventors: Joseph Faivre, Nathaniel Doy, Lance Cowper
  • Patent number: D760725
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: July 5, 2016
    Assignee: Caterpillar Inc.
    Inventors: Jeffrey A. Brush, Brad Van De Veer, Nathaniel Doy, Joseph Faivre