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).
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Patent number: 9096115Abstract: 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: GrantFiled: November 17, 2011Date of Patent: August 4, 2015Assignee: Caterpillar Inc.Inventors: Aaron Yun-Ren Ho, Aristoteles RosaNeto
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Publication number: 20130125536Abstract: 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: ApplicationFiled: November 17, 2011Publication date: May 23, 2013Applicant: CATERPILLAR INC.Inventors: Aaron Yun-Ren Ho, Aristoteles RosaNeto
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Patent number: 8374755Abstract: 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: GrantFiled: July 31, 2007Date of Patent: February 12, 2013Assignee: Caterpillar Inc.Inventors: Hong-Chin Lin, Yun-Ren Ho, Lucas Adam Knapp
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Patent number: 7901321Abstract: 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: GrantFiled: August 29, 2008Date of Patent: March 8, 2011Assignee: Caterpillar Inc.Inventors: James Thomas Ferrier, Yun-Ren Ho, Michael Angel Cobo
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Publication number: 20100056335Abstract: 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: ApplicationFiled: August 29, 2008Publication date: March 4, 2010Inventors: James Thomas Ferrier, Yun-Ren Ho, Michael Angel Cobo
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Patent number: 7632179Abstract: 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: GrantFiled: August 1, 2005Date of Patent: December 15, 2009Assignee: CNH America LLCInventors: John G. Brome, Yun Ren Ho, Nicholas Laufenberg
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Patent number: 7520806Abstract: 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: GrantFiled: March 19, 2008Date of Patent: April 21, 2009Assignee: CNH America LLCInventors: John E. Bundy, John G. Brome, Yun-Ren Ho, Richard E. McMillen
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Publication number: 20090037072Abstract: 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: ApplicationFiled: July 31, 2007Publication date: February 5, 2009Inventors: Hong-Chin Lin, Yun-Ren Ho, Lucas Adam Knapp
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Patent number: 7452267Abstract: 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: GrantFiled: March 20, 2007Date of Patent: November 18, 2008Assignee: CNH America LLCInventors: John E. Bundy, John G. Brome, Yun-Ren Ho, Richard E. McMillen
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Publication number: 20080234016Abstract: 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: ApplicationFiled: March 19, 2008Publication date: September 25, 2008Inventors: John E. Bundy, John G. Brome, Yun-Ren Ho, Richard E. McMillen
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Publication number: 20080234017Abstract: 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: ApplicationFiled: March 20, 2007Publication date: September 25, 2008Inventors: John E. Bundy, John G. Brome, Yun-Ren Ho, Richard E. McMillen
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Patent number: 7427231Abstract: 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: GrantFiled: January 14, 2005Date of Patent: September 23, 2008Assignee: CNH America LLCInventors: John G. Brome, Yun-Ren Ho
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Patent number: 7401496Abstract: 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: GrantFiled: September 19, 2005Date of Patent: July 22, 2008Assignee: CNH America LLCInventors: Yun Ren Ho, Michael J. Covington, George H. Hale
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Patent number: 7357214Abstract: 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: GrantFiled: March 6, 2006Date of Patent: April 15, 2008Assignee: CNH America LLCInventors: Yun Ren Ho, Bernard Johnson, Branko J. Horvat, Jr., John E. Bundy
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Patent number: 7172046Abstract: 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: GrantFiled: March 6, 2006Date of Patent: February 6, 2007Assignee: CNH America LLCInventors: Yun Ren Ho, Bernard Johnson, Branko J. Horvat, Jr., John E. Bundy
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Patent number: 7121374Abstract: 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: GrantFiled: April 30, 2005Date of Patent: October 17, 2006Assignee: CNH America LLCInventors: Yun Ren Ho, Bernard Johnson, Branko J. Horvat, Jr., John E. Bundy
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Patent number: 7093536Abstract: 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: GrantFiled: December 28, 2005Date of Patent: August 22, 2006Assignee: CNH America LLCInventors: Tracy R. Archer, Yun-Ren Ho, Kevin D. McKee, Kevin S. Richman
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Patent number: 7096105Abstract: 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: GrantFiled: October 20, 2004Date of Patent: August 22, 2006Assignee: CNH America LLCInventors: Yun-Ren Ho, John E. Bundy, John G. Brome
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Publication number: 20060156715Abstract: 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: ApplicationFiled: January 14, 2005Publication date: July 20, 2006Inventors: John Brome, Yun-Ren Ho
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Patent number: 7074125Abstract: 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: GrantFiled: May 17, 2005Date of Patent: July 11, 2006Assignee: CNH America LLCInventors: Yun Ren Ho, Quentin Guhr, Douglas Wolken