Patents by Inventor Chun Seung Lee

Chun Seung Lee 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).

  • Swing control system and method for construction machine using electric motor
    Patent number: 8738239
    Abstract: A swing control system and method for a construction machine using an electric motor is provided. The swing control system includes a swing electric motor swinging an upper swing structure and a swing control unit.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: May 27, 2014
    Assignee: Volvo Construction Equipment Holding Sweden AB
    Inventors: Jong Min Kang, Ahn Kyun Jung, Chun Seung Lee, Ji Yun Kim, Dong Uk Choi, Jung Sun Jo, Sung Kon Kim, Bong Soo Yoo
  • Control system and method for hybrid construction machine
    Patent number: 8606442
    Abstract: A control system and method for a hybrid construction machine is provided.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: December 10, 2013
    Assignee: Volvo Construction Equipment Holding SSweden AB
    Inventors: Jong Min Kang, Ahn Kyun Jung, Chun Seung Lee, Jae Hong Kim, Eui Chul Kim, Jung Sun Jo, Sung Kon Kim, Sung Wan Koo
  • Apparatus for easing impact on boom of excavator and method of controlling the same
    Patent number: 7934377
    Abstract: An apparatus for easing an impact on a boom of an excavator and a method of controlling the same are disclosed, which can minimize the vibration occurring in the boom due to the impact on a boom cylinder by actively controlling an amount of hydraulic fluid being supplied to the boom cylinder when the operation of the boom cylinder is suddenly stopped due to an operator's sudden manipulation of an operation lever for a working device.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: May 3, 2011
    Assignee: Volvo Construction Equipment Holding Sweden AB
    Inventors: Dong Soo Kim, Jae Hoon Lee, Chun Seung Lee, Jae Hong Kim, Joong Seon Joh, Eun Tae Jeung
  • CONTROL SYSTEM AND METHOD FOR HYBRID CONSTRUCTION MACHINE
    Publication number: 20110029175
    Abstract: A control system and method for a hybrid construction machine is provided.
    Type: Application
    Filed: June 23, 2010
    Publication date: February 3, 2011
    Inventors: Jong Min Kang, Ahn Kyun Jung, Chun Seung Lee, Jae Hong Kim, Eui Chul Kim, Jung Sun Jo, Sung Kon Kim, Sung Wan Koo
  • SWING CONTROL SYSTEM AND METHOD FOR CONSTRUCTION MACHINE USING ELECTRIC MOTOR
    Publication number: 20110029206
    Abstract: A swing control system and method for a construction machine using an electric motor is provided. The swing control system includes a swing electric motor swinging an upper swing structure and a swing control unit.
    Type: Application
    Filed: June 17, 2010
    Publication date: February 3, 2011
    Inventors: Jong Min KANG, Ahn Kyun Jung, Chun Seung Lee, Ji Yun Kim, Dong Uk Choi, Jung Sun Jo, Sung Kon Kim, Bong Soo Yoo
  • Apparatus for easing impact on boom of excavator and method of controlling the same
    Publication number: 20080155977
    Abstract: An apparatus for easing an impact on a boom of an excavator and a method of controlling the same are disclosed, which can minimize the vibration occurring in the boom due to the impact on a boom cylinder by actively controlling an amount of hydraulic fluid being supplied to the boom cylinder when the operation of the boom cylinder is suddenly stopped due to an operator's sudden manipulation of an operation lever for a working device.
    Type: Application
    Filed: October 25, 2007
    Publication date: July 3, 2008
    Inventors: Dong Soo Kim, Jae Hoon Lee, Chun Seung Lee, Jae Hong Kim, Joong Seon Joh, Eun Tae Jeung