Patents by Inventor Yun Ren Ho

Yun Ren Ho 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: 9096115
    Abstract: An energy transfer system includes a power transfer mechanism, a first system, and a second system. The first system includes a first pump-motor operatively connecting the first system to the power transfer mechanism and a regenerative system operatively connected to the first pump-motor. The second system is operatively connected to the power transfer mechanism. Power is transferred between systems by the power transfer mechanism. A method of energy transfer is also provided.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: August 4, 2015
    Assignee: Caterpillar Inc.
    Inventors: Aaron Yun-Ren Ho, Aristoteles RosaNeto
  • Publication number: 20130125536
    Abstract: An energy transfer system includes a power transfer mechanism, a first system, and a second system. The first system includes a first pump-motor operatively connecting the first system to the power transfer mechanism and a regenerative system operatively connected to the first pump-motor. The second system is operatively connected to the power transfer mechanism. Power is transferred between systems by the power transfer mechanism. A method of energy transfer is also provided.
    Type: Application
    Filed: November 17, 2011
    Publication date: May 23, 2013
    Applicant: CATERPILLAR INC.
    Inventors: Aaron Yun-Ren Ho, Aristoteles RosaNeto
  • Patent number: 8374755
    Abstract: A control system for a machine is disclosed. The control system may have a power source, an operator input device configured to generate a first signal indicative of a desired mode of power source operation, and a work implement driven by the power source. The control system may also have a controller in communication with the power source and the operator input device. The controller may be configured to classify a currently performed work implement task and select an output map based on the classification of the currently performed work implement task and the first signal. The controller may further be configured to control the power source operation using the output map.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: February 12, 2013
    Assignee: Caterpillar Inc.
    Inventors: Hong-Chin Lin, Yun-Ren Ho, Lucas Adam Knapp
  • Patent number: 7901321
    Abstract: A power train for a machine is provided having a power source and a transmission, which includes a plurality of gears configured to produce multiple output ratios when selectively engaged. The power train also has a torque converter operatively coupling the power source and the transmission. A lockup clutch is associated with the torque converter, and the engagement of the lockup clutch is restricted so that the lockup clutch is engaged only when permissible gear ratios are actuated. The power train further has a controller in communication with the lockup clutch, the controller being configured to selectively engage the lockup clutch in either a first or a second shift mode with the number of permissible gear ratios being greater in the first shift mode than the second shift mode.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: March 8, 2011
    Assignee: Caterpillar Inc.
    Inventors: James Thomas Ferrier, Yun-Ren Ho, Michael Angel Cobo
  • Publication number: 20100056335
    Abstract: A power train for a machine is provided having a power source and a transmission, which includes a plurality of gears configured to produce multiple output ratios when selectively engaged. The power train also has a torque converter operatively coupling the power source and the transmission. A lockup clutch is associated with the torque converter, and the engagement of the lockup clutch is restricted so that the lockup clutch is engaged only when permissible gear ratios are actuated. The power train further has a controller in communication with the lockup clutch, the controller being configured to selectively engage the lockup clutch in either a first or a second shift mode with the number of permissible gear ratios being greater in the first shift mode than the second shift mode.
    Type: Application
    Filed: August 29, 2008
    Publication date: March 4, 2010
    Inventors: James Thomas Ferrier, Yun-Ren Ho, Michael Angel Cobo
  • Patent number: 7632179
    Abstract: A system to sense incipient slugging of a rotor by sensing a rotor speed signal, an engine speed signal and a first hydraulic motor speed signal, combining the rotor speed signal and the engine speed signal to provide a second hydraulic motor speed signal, and determining incipient slugging based upon the first and second speed signals, and thereby preventing potential damage to threshing components.
    Type: Grant
    Filed: August 1, 2005
    Date of Patent: December 15, 2009
    Assignee: CNH America LLC
    Inventors: John G. Brome, Yun Ren Ho, Nicholas Laufenberg
  • Patent number: 7520806
    Abstract: A deslugging method and system for an agricultural combine, providing several semi- and fully automated operating modes or routines for removing or dislodging a slug of crop and/or other material from the threshing system and/or a feeder of the combine for conveying crop material to the threshing system. The routines can include reciprocating, agitating and jogging routines, which can be automatically altered during execution responsive to sensed or changing conditions, as processed by a suitable filter such as a simplified Kalman type signal filter, for generating a real time estimation and prediction of the various states of the threshing system.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: April 21, 2009
    Assignee: CNH America LLC
    Inventors: John E. Bundy, John G. Brome, Yun-Ren Ho, Richard E. McMillen
  • Publication number: 20090037072
    Abstract: A control system for a machine is disclosed. The control system may have a power source, an operator input device configured to generate a first signal indicative of a desired mode of power source operation, and a work implement driven by the power source. The control system may also have a controller in communication with the power source and the operator input device. The controller may be configured to classify a currently performed work implement task and select an output map based on the classification of the currently performed work implement task and the first signal. The controller may further be configured to control the power source operation using the output map.
    Type: Application
    Filed: July 31, 2007
    Publication date: February 5, 2009
    Inventors: Hong-Chin Lin, Yun-Ren Ho, Lucas Adam Knapp
  • Patent number: 7452267
    Abstract: A deslugging method and system for an agricultural combine, providing several semi- and fully automated operating modes or routines for removing or dislodging a slug of crop and/or other material from the threshing system and/or a feeder of the combine for conveying crop material to the threshing system. The routines can include reciprocating, agitating and jogging routines, which can be automatically altered during execution responsive to sensed or changing conditions, as processed by a suitable filter such as a simplified Kalman type signal filter, for generating a real time estimation and prediction of the various states of the threshing system.
    Type: Grant
    Filed: March 20, 2007
    Date of Patent: November 18, 2008
    Assignee: CNH America LLC
    Inventors: John E. Bundy, John G. Brome, Yun-Ren Ho, Richard E. McMillen
  • Publication number: 20080234016
    Abstract: A deslugging method and system for an agricultural combine, providing several semi- and fully automated operating modes or routines for removing or dislodging a slug of crop and/or other material from the threshing system and/or a feeder of the combine for conveying crop material to the threshing system. The routines can include reciprocating, agitating and jogging routines, which can be automatically altered during execution responsive to sensed or changing conditions, as processed by a suitable filter such as a simplified Kalman type signal filter, for generating a real time estimation and prediction of the various states of the threshing system.
    Type: Application
    Filed: March 19, 2008
    Publication date: September 25, 2008
    Inventors: John E. Bundy, John G. Brome, Yun-Ren Ho, Richard E. McMillen
  • Publication number: 20080234017
    Abstract: A deslugging method and system for an agricultural combine, providing several semi- and fully automated operating modes or routines for removing or dislodging a slug of crop and/or other material from the threshing system and/or a feeder of the combine for conveying crop material to the threshing system. The routines can include reciprocating, agitating and jogging routines, which can be automatically altered during execution responsive to sensed or changing conditions, as processed by a suitable filter such as a simplified Kalman type signal filter, for generating a real time estimation and prediction of the various states of the threshing system.
    Type: Application
    Filed: March 20, 2007
    Publication date: September 25, 2008
    Inventors: John E. Bundy, John G. Brome, Yun-Ren Ho, Richard E. McMillen
  • Patent number: 7427231
    Abstract: A motor control system of a combine having a rotor that is simultaneously driven by an engine and a hydraulic motor is configured to determine at overspeed condition of the motor and to disengage the motor from the engine when the overspeed condition exists.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: September 23, 2008
    Assignee: CNH America LLC
    Inventors: John G. Brome, Yun-Ren Ho
  • Patent number: 7401496
    Abstract: A system and method for calibrating a cotton module builder having a compactor frame, the system including an electronic controller configured to move the compactor frame to a plurality of positions, to read a compactor frame position sensor or sensors in the first and second positions, and to calibrate the sensor or sensors based on the sensor readings.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: July 22, 2008
    Assignee: CNH America LLC
    Inventors: Yun Ren Ho, Michael J. Covington, George H. Hale
  • Patent number: 7357214
    Abstract: An agricultural combine has a variable displacement pump connected to four drive motors that drive four wheels. An electronic controller monitors the speed of each wheel and reduces the torque of the motor that drives the wheel when the wheel slips. The controller reduces the torque by reducing the specific displacement of the slipping motor. Once the wheel has ceased slipping, the controller increases the specific displacement of the motor back to its original displacement.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: April 15, 2008
    Assignee: CNH America LLC
    Inventors: Yun Ren Ho, Bernard Johnson, Branko J. Horvat, Jr., John E. Bundy
  • Patent number: 7172046
    Abstract: An agricultural combine has a variable displacement pump connected to four drive motors that drive four wheels. An electronic controller monitors the speed of each wheel and reduces the torque of the motor that drives the wheel when the wheel slips. The controller reduces the torque by reducing the specific displacement of the slipping motor. Once the wheel has ceased slipping, the controller increases the specific displacement of the motor back to its original displacement.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: February 6, 2007
    Assignee: CNH America LLC
    Inventors: Yun Ren Ho, Bernard Johnson, Branko J. Horvat, Jr., John E. Bundy
  • Patent number: 7121374
    Abstract: An agricultural combine has a variable displacement pump connected to four drive motors that drive four wheels. An electronic controller monitors the speed of each wheel and reduces the torque of the motor that drives the wheel when the wheel slips. The controller reduces the torque by reducing the specific displacement of the slipping motor. Once the wheel has ceased slipping, the controller increases the specific displacement of the motor back to its original displacement.
    Type: Grant
    Filed: April 30, 2005
    Date of Patent: October 17, 2006
    Assignee: CNH America LLC
    Inventors: Yun Ren Ho, Bernard Johnson, Branko J. Horvat, Jr., John E. Bundy
  • Patent number: 7093536
    Abstract: A fault tolerant operating method for a cotton compactor of a cotton module builder or packager of a cotton harvesting machine, which serves as an alternative to shutting down the compacting process or erratic operation thereof, in the event of indication of a fault or failure condition involving one or more sensors associated with the compactor, or a conductive path in connection with a sensor, all generally identified as a fault or failure condition.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: August 22, 2006
    Assignee: CNH America LLC
    Inventors: Tracy R. Archer, Yun-Ren Ho, Kevin D. McKee, Kevin S. Richman
  • Patent number: 7096105
    Abstract: An agricultural combine includes a rotor drive system to which sensors are coupled to signal the rotational speed of a hydraulic motor and an engine. An electronic controller that contains a mathematical model of the system reads the sensors and using the model estimates additional parameters of the system. The estimated parameters include a gearbox's gear ratio and a planetary ring gear's speed. These estimated parameters and the sensor readings are used in a PID feedback control loop to control the speed of a planetary ring gear by controlling the speed of a hydraulic motor driving the sun gear. In this manner, the controller can drive the ring gear to a predetermined speed that reduces the difference in the input and output speeds of a hydraulic clutch and thereby engage that clutch while reducing shock to the clutch and other mechanical components of the combine.
    Type: Grant
    Filed: October 20, 2004
    Date of Patent: August 22, 2006
    Assignee: CNH America LLC
    Inventors: Yun-Ren Ho, John E. Bundy, John G. Brome
  • Publication number: 20060156715
    Abstract: A motor control system of a combine having a rotor that is simultaneously driven by an engine and a hydraulic motor is configured to determine at overspeed condition of the motor and to disengage the motor from the engine when the overspeed condition exists.
    Type: Application
    Filed: January 14, 2005
    Publication date: July 20, 2006
    Inventors: John Brome, Yun-Ren Ho
  • Patent number: 7074125
    Abstract: A system for sensing the presence of tailings in a combine includes a tailings sensor configured to generate a signal indicative of a flow rate of tailings and a first microcontroller module coupled to the tailings sensor and configured to receive the signal and filter it by removing transient high excursion noise. The signal may be low-pass filtered and notch filtered to remove other components of noise.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: July 11, 2006
    Assignee: CNH America LLC
    Inventors: Yun Ren Ho, Quentin Guhr, Douglas Wolken