Patents by Inventor Peter J. Dix

Peter J. Dix 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: 9750173
    Abstract: A method for altering a swath path of a vehicle includes the steps of: loading a base swath path and an original swath width into a memory of the vehicle; generating a plurality of swath paths from the base swath path and the original swath width, each of the generated swath paths defining at least two geographic locations; measuring a current geographic location of the vehicle; determining a difference between the current geographic location and a geographic location of a swath path nearest to the current geographic location; determining a number of swath paths that the generated swath path nearest to the current geographic location is subsequent to the base swath path; dividing the difference by the determined number of swath paths to produce a swath width remark distance; and adding the swath width remark distance to the original swath width to produce a modified swath width.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: September 5, 2017
    Assignee: CNH Industrial America LLC
    Inventors: Peter J. Dix, Brian R. Ray
  • Patent number: 9702417
    Abstract: A method of calibrating a hydraulically operated clutch in a continuously variable transmission of a vehicle, includes steps of filling the clutch as if for a shift, using a control signal value for achieving a test pressure, and determining a resulting change in a pressure condition in a hydrostatic power unit of the transmission. If the change indicates initial engagement, then a value representative of the signal value used is recorded. If greater than initial engagement is indicated, or the vehicle moved, then the clutch is emptied and tested using a lower test pressure. If initial engagement is not indicated, the clutch is emptied and refilled to a greater test pressure. An exemplary pressure condition is a difference in pressure in lines between a pump and motor of the power unit. During the calibration, the vehicle can be held stationary with a parking brake or the like.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: July 11, 2017
    Assignee: CNH Industrial America LLC
    Inventors: Peter J. Dix, Garth H. Bulgrien, Robert C Prasse, Pavel Kuros
  • Publication number: 20170112045
    Abstract: A method for altering a swath path of a vehicle includes the steps of: loading a base swath path and an original swath width into a memory of the vehicle; generating a plurality of swath paths from the base swath path and the original swath width, each of the generated swath paths defining at least two geographic locations; measuring a current geographic location of the vehicle; determining a difference between the current geographic location and a geographic location of a swath path nearest to the current geographic location; determining a number of swath paths that the generated swath path nearest to the current geographic location is subsequent to the base swath path; dividing the difference by the determined number of swath paths to produce a swath width remark distance; and adding the swath width remark distance to the original swath width to produce a modified swath width.
    Type: Application
    Filed: October 27, 2015
    Publication date: April 27, 2017
    Applicant: CNH INDUSTRIAL AMERICA LLC
    Inventors: Peter J. Dix, Brian R. Ray
  • Patent number: 9618064
    Abstract: In one aspect, a computer-implemented method for preventing centrifugal clutch lock-ups within a work vehicle transmission may generally include transmitting a signal associated with disengaging a clutch of the transmission, wherein the clutch includes a hydraulic actuator having a pressure relief valve. The method may also include monitoring a pressure of the hydraulic fluid supplied to the actuator relative to a predetermined pressure threshold and monitoring a rotational speed of a clutch can associated with the clutch relative to a predetermined speed threshold, wherein the speed threshold is defined relative to a lock-up speed associated with the clutch can. In addition, the method may include transmitting a lock-up signal associated with limiting the rotational speed of the clutch can and/or providing an indication that a clutch lock-up is likely to occur when the pressure exceeds the pressure threshold and the rotational speed exceeds the speed threshold.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: April 11, 2017
    Assignee: CNH Industrial America LLC
    Inventors: Pawel Kuros, Peter J. Dix
  • Patent number: 9555806
    Abstract: A method for controlling rollback of a work vehicle may include receiving a signal indicating that a pedal of the work vehicle has been depressed, wherein the work vehicle is initially traveling in a first direction up an inclined surface such that at least one clutch of the transmission is engaged. In addition, the method may include reducing a pressure within the at least one clutch after receiving the signal in order to decelerate the work vehicle in the first direction and engaging a parking brake of the work vehicle as the work vehicle reverses direction and travels in a second direction down the inclined surface.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: January 31, 2017
    Assignee: CNH Industrial America LLC
    Inventors: Garth Harvey Bulgrien, Peter J. Dix, Pawel Kuros
  • Patent number: 9550490
    Abstract: A swash plate angle for a hydrostatic power unit of a continuously variable hydromechanical transmission is determined using a feedforward compensation term, to reduce reliance on closed loop control. The feedforward term is based on knowledge of the hydrostatic power unit determined as a function of knowledge of certain parameters, including, but not limited to, hydrostatic power unit pressure, swash plate angle, desired hydrostatic power unit ratio, and pump speed.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: January 24, 2017
    Assignee: CNH Industrial America LLC
    Inventors: Haibo Guo, Peter J. Dix, Garth H. Bulgrien, Brian A. Hartman, Robert C. Prasse, Cecil A. Weeramantry, Brian E. Felsing
  • Patent number: 9421958
    Abstract: A braking system for a work vehicle may generally include a hydraulically actuated brake, a tank containing hydraulic fluid and a brake valve fluidly connected between the tank and the hydraulically actuated brake. The brake valve may be movable between an on position and an off position for controlling a flow of the hydraulic fluid from the tank to the hydraulically actuated brake. The brake valve may include a first solenoid coil and a second solenoid coil, with each of the solenoid coils being configured to be independently energized and de-energized for moving the brake valve between the on and off positions. The system may also include a first control device electrically connected to the first solenoid coil for energizing and de-energizing the first solenoid coil and a separate second control device electrically connected to the second solenoid coil for energizing and de-energizing the second solenoid coil.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: August 23, 2016
    Assignee: CNH Industrial America LLC
    Inventors: Peter J. Dix, Pawel Kuros
  • Publication number: 20160169304
    Abstract: In one aspect, a computer-implemented method for preventing centrifugal clutch lock-ups within a work vehicle transmission may generally include transmitting a signal associated with disengaging a clutch of the transmission, wherein the clutch includes a hydraulic actuator having a pressure relief valve. The method may also include monitoring a pressure of the hydraulic fluid supplied to the actuator relative to a predetermined pressure threshold and monitoring a rotational speed of a clutch can associated with the clutch relative to a predetermined speed threshold, wherein the speed threshold is defined relative to a lock-up speed associated with the clutch can. In addition, the method may include transmitting a lock-up signal associated with limiting the rotational speed of the clutch can and/or providing an indication that a clutch lock-up is likely to occur when the pressure exceeds the pressure threshold and the rotational speed exceeds the speed threshold.
    Type: Application
    Filed: December 10, 2014
    Publication date: June 16, 2016
    Inventors: Pawel Kuros, Peter J. Dix
  • Patent number: 9242632
    Abstract: A method of calibrating a hydraulically operated park brake of a continuously variable transmission of a vehicle. With the vehicle moving at a set, slow speed within a specified range, and the park brake off, a search technique is used, wherein the brake hydraulic pressure is reduced by application of a control signal of a selected test value to apply the brake. When the selected test value is reached, it is held constant, and a condition in a HSU of the transmission is monitored for a change indicative of engagement of the park brake. This will expectedly be in the form of a pressure change and more particularly an increase indicating initial contact between the plates of the brake, and if the HSU change is not detected, the step will time out and another control signal value will be tested.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: January 26, 2016
    Assignee: CNH Industrial America LLC
    Inventors: Peter J. Dix, Garth H. Bulgrien, Robert C Prasse, Pavel Kuros
  • Publication number: 20150367827
    Abstract: A braking system for a work vehicle may generally include a hydraulically actuated brake, a tank containing hydraulic fluid and a brake valve fluidly connected between the tank and the hydraulically actuated brake. The brake valve may be movable between an on position and an off position for controlling a flow of the hydraulic fluid from the tank to the hydraulically actuated brake. The brake valve may include a first solenoid coil and a second solenoid coil, with each of the solenoid coils being configured to be independently energized and de-energized for moving the brake valve between the on and off positions. The system may also include a first control device electrically connected to the first solenoid coil for energizing and de-energizing the first solenoid coil and a separate second control device electrically connected to the second solenoid coil for energizing and de-energizing the second solenoid coil.
    Type: Application
    Filed: June 24, 2014
    Publication date: December 24, 2015
    Inventors: PETER J. DIX, PAWEL KUROS
  • Publication number: 20150329116
    Abstract: In one aspect, a method for controlling the operation of a work vehicle including a power shift transmission is disclosed. The method may include receiving, with a controller, a speed command signal from an input device instructing the controller to reduce a vehicle speed of the work vehicle to zero, controlling at least one clutch of the power shift transmission in order to initially reduce the vehicle speed and proportionally applying a parking brake of the work vehicle to reduce the vehicle speed to zero.
    Type: Application
    Filed: September 13, 2013
    Publication date: November 19, 2015
    Applicant: CNH Industrial America, LLC
    Inventors: Garth Harvey Bulgrien, Pawel Kuros, Peter J. Dix
  • Patent number: 9140345
    Abstract: A method for controlling a continuously variable transmission of a work machine during a shuttle shift is disclosed. The method may generally include initiating a directional swap by disengaging an off-going directional clutch of the continuously variable transmission and slipping an on-coming directional clutch of the continuously variable transmission to decelerate the work machine in an off-going direction. In addition, the method may include estimating a total amount of energy to be dissipated in the on-coming directional clutch during the shuttle shift, comparing the total amount of energy to a predetermined energy threshold and, if the total amount of energy is equal to or exceeds the predetermined energy threshold, performing the reversion action to complete the shuttle shift, wherein the reversion action corresponds to an action taken to engage one of the off-going directional clutch or the on-coming directional clutch so as to permit the shuttle shift to be completed using ratio changing.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: September 22, 2015
    Assignee: CNH Industrial America LLC
    Inventors: Peter J. Dix, Garth H. Bulgrien, Pawel Kuros, Rocco Petrigliano
  • Patent number: 9115772
    Abstract: In one aspect, a computer-implemented method for automatically calibrating clutches within a transmission of a work vehicle may include determining, with a computing device, whether a plurality of predetermined conditions are satisfied for performing a clutch calibration on a clutch of the transmission. The predetermined conditions may require that the work vehicle be in park and that a predetermined time period has elapsed since a previous clutch calibration was performed on the clutch. In addition, the method may include automatically initiating the clutch calibration without requiring operator input when the predetermined conditions are satisfied and performing the clutch calibration in order to calibrate the clutch.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: August 25, 2015
    Assignee: CNH Industrial America LLC
    Inventors: Peter J. Dix, Pawel Kuros
  • Patent number: 9097342
    Abstract: The method of estimating and controlling driveline torque in a continuously variable hydro-mechanical transmission uses pressure data and other metrics of a hydrostatic power unit of the transmission in lieu of actual driveline torque data. A mechanical efficiency of the transmission is determined as a function of whether the power unit is operating in a power generation or regeneration mode, and the torque output of the power unit is estimated from that and other hydrostatic parameters. This is used to estimate a torque output of a planetary power unit of the transmission, and the torque on an output member of the driveline is then estimated using that value, and appropriate corrective action taken.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: August 4, 2015
    Assignee: CNH Industrial America LLC
    Inventors: Peter J. Dix, Garth H. Bulgrien, Robert C. Prasse, Cecil A. Weeramantry, Haibo Guo
  • Patent number: 9086127
    Abstract: A method for performing a shuttle shift with a continuously variable transmission of a work machine is disclosed. The method may generally include adjusting a swash plate angle of a hydrostatic power unit of the transmission in a first direction to reduce a travel speed of the work machine in an off-going direction, initiating a directional swap between an off-going directional clutch of the continuously variable transmission and an on-coming directional clutch of the continuously variable transmission while the work machine is traveling in the off-going direction and adjusting the swash plate angle of the hydrostatic unit in a second direction after the initiation of the directional swap to reduce slippage across the on-coming directional clutch, wherein the second direction is opposite the first direction.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: July 21, 2015
    Assignee: CNH Industrial America LLC
    Inventors: Rocco Petrigliano, Garth Harvey Bulgrien, Peter J. Dix, Pawel Kuros
  • Publication number: 20150158492
    Abstract: A method for controlling rollback of a work vehicle is disclosed. The method may include receiving a signal indicating that a pedal of the work vehicle has been depressed, wherein the work vehicle is initially traveling in a first direction up an inclined surface such that at least one clutch of the transmission is engaged. In addition, the method may include reducing a pressure within the at least one clutch after receiving the signal in order to decelerate the work vehicle in the first direction and engaging a parking brake of the work vehicle as the work vehicle reverses direction and travels in a second direction down the inclined surface.
    Type: Application
    Filed: July 12, 2012
    Publication date: June 11, 2015
    Applicant: CNH Industrial America, LLC
    Inventors: Garth Harvey Bulgrien, Peter J. Dix, Pawel Kuros
  • Publication number: 20150094922
    Abstract: In one aspect, a computer-implemented method for automatically calibrating clutches within a transmission of a work vehicle may include determining, with a computing device, whether a plurality of predetermined conditions are satisfied for performing a clutch calibration on a clutch of the transmission. The predetermined conditions may require that the work vehicle be in park and that a predetermined time period has elapsed since a previous clutch calibration was performed on the clutch. In addition, the method may include automatically initiating the clutch calibration without requiring operator input when the predetermined conditions are satisfied and performing the clutch calibration in order to calibrate the clutch.
    Type: Application
    Filed: September 30, 2013
    Publication date: April 2, 2015
    Applicant: CNH AMERICA LLC
    Inventors: Peter J. Dix, Pawel Kuros
  • Patent number: 8986162
    Abstract: A shuttle shifting method for a continuously variable transmission automatically selects a manner of shuttle shifting as a function of certain monitored conditions. As one alternative, the direction of operation of the transmission is changed prior to reducing the vehicle speed to zero, and tilt of a swash plate of the hydrostatic power unit of the transmission is held substantially constant, for achieving fast, smooth shifts at faster starting and ending vehicle speeds, without coming to a complete stop. In another alternative, for slower starting and ending speeds, or other conditions such as a temperature condition is present, the vehicle is stopped by changing swash plate angle before effecting a directional change of the transmission and the swash plate.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: March 24, 2015
    Assignee: CNH Industrial America LLC
    Inventors: Peter J. Dix, Garth H. Bulgrien, Brian A. Hartman, Robert C. Prasse
  • Patent number: 8858392
    Abstract: A parking brake is controlled in concert with operation of a hydrostatic power unit of a continuously variable transmission, particularly when engaging, disengaging and shuttle shifting the transmission, to provide advantages, particularly when on hills. When particular commands are received, such as shifting to a non-moving position, the parking brake is automatically engaged to hold the vehicle position. A swash plate of the hydrostatic unit can be automatically positioned to anticipate the next command. If that command is received, the brake is automatically gradually or proportionally released and the transmission engaged to effect the commanded movement of the vehicle. If a different command is received, the brake remains engaged as the transmission is configured for the commanded movement, such that no machine movement results. Then the brake is automatically gradually or proportionally released and the transmission engaged to effect that commanded movement.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: October 14, 2014
    Assignee: CNH Industrial America LLC
    Inventors: Peter J. Dix, Garth H. Bulgrien, Robert C Prasse, Pavel Kuros
  • Publication number: 20140221155
    Abstract: A method for performing a shuttle shift with a continuously variable transmission of a work machine is disclosed. The method may generally include adjusting a swash plate angle of a hydrostatic power unit of the transmission in a first direction to reduce a travel speed of the work machine in an off-going direction, initiating a directional swap between an off-going directional clutch of the continuously variable transmission and an on-coming directional clutch of the continuously variable transmission while the work machine is traveling in the off-going direction and adjusting the swash plate angle of the hydrostatic unit in a second direction after the initiation of the directional swap to reduce slippage across the on-coming directional clutch, wherein the second direction is opposite the first direction.
    Type: Application
    Filed: July 12, 2012
    Publication date: August 7, 2014
    Inventors: Rocco Petrigliano, Garth Harvey Bulgrien, Peter J. Dix, Pawel Kuros