Patents by Inventor Duck Woo Park

Duck Woo Park 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: 11692329
    Abstract: An embodiment of the present invention relates to an apparatus for controlling quick clamping of construction machine which comprises a clamp for mounting an attachment, the apparatus including: a selection input unit for generating a selection signal during an on operation by an operator; an operation input unit for generating an operation signal during an operation by the operator; a clamp driving unit for releasing and fastening the clamp; and a controller for controlling the clamp driving unit to release the clamp while the operation signal is input after the selection signal is input.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: July 4, 2023
    Assignee: DOOSAN INFRACORE CO., LTD.
    Inventors: Young Sup Lim, Jun Hong Park, Duck Woo Park
  • Patent number: 11377821
    Abstract: A method of controlling a safety apparatus of a construction machine includes: applying a power to the construction machine when a key switch operation of a worker is input; receiving operation signals of the parking switch, the FNR switch, and the pilot cutoff switch; determining whether operation states of the parking switch, the FNR switch, and the pilot cutoff switch satisfy predetermined conditions; and controlling the construction machine to be available for the start-up when the predetermined conditions are satisfied. The predetermined conditions are that the parking switch is operated to be on so that a parking brake is operated, the FNR switch is operated to select a neutral so that a traveling direction of the construction machine is in a neutral state, and the pilot cutoff switch is operated to be on so that the construction machine is in a pilot cutoff state.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: July 5, 2022
    Assignee: DOOSAN INFRACORE CO., LTD.
    Inventors: Young Sup Lim, Duck Woo Park, Jun Hong Park
  • Publication number: 20190390437
    Abstract: An embodiment of the present invention relates to an apparatus for controlling quick clamping of construction machine which comprises a clamp for mounting an attachment, the apparatus including: a selection input unit for generating a selection signal during an on operation by an operator; an operation input unit for generating an operation signal during an operation by the operator; a clamp driving unit for releasing and fastening the clamp; and a controller for controlling the clamp driving unit to release the clamp while the operation signal is input after the selection signal is input.
    Type: Application
    Filed: January 17, 2018
    Publication date: December 26, 2019
    Inventors: Young Sup LIM, Jun Hong PARK, Duck Woo PARK
  • Publication number: 20190368163
    Abstract: A method of controlling a safety apparatus of a construction machine includes: applying a power to the construction machine when a key switch operation of a worker is input; receiving operation signals of the parking switch, the FNR switch, and the pilot cutoff switch; determining whether operation states of the parking switch, the FNR switch, and the pilot cutoff switch satisfy predetermined conditions; and controlling the construction machine to be available for the start-up when the predetermined conditions are satisfied. The predetermined conditions are that the parking switch is operated to be on so that a parking brake is operated, the FNR switch is operated to select a neutral so that a traveling direction of the construction machine is in a neutral state, and the pilot cutoff switch is operated to be on so that the construction machine is in a pilot cutoff state.
    Type: Application
    Filed: February 12, 2018
    Publication date: December 5, 2019
    Inventors: Young Sup LIM, Duck Woo PARK, Jun Hong PARK
  • Patent number: 9446769
    Abstract: According to the present disclosure, there is provided a system for providing information about fuel efficiency of construction machinery, including: a TMS controller obtaining information about reference fuel efficiency through a communication network from a server, and providing the information about the reference fuel efficiency as display information; and an equipment controller calculating information about current fuel efficiency by analyzing operations of constituent elements of the construction machinery.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: September 20, 2016
    Assignee: Doosan Infracore Co., Ltd.
    Inventors: Hong Cheol Yun, Duck Woo Park
  • Patent number: 9441646
    Abstract: The present disclosure relates to a hydraulic system for a construction machine which uses an electric hydraulic pump, and more particularly, to a hydraulic system including an emergency control unit for temporarily driving the construction machine when an electronic control unit controlling the electric hydraulic pumps fails to operate.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: September 13, 2016
    Assignee: Doosan Infracore Co., Ltd.
    Inventors: Jung Mug Shin, Duck Woo Park, Woo Yong Jung
  • Publication number: 20140336916
    Abstract: According to the present disclosure, there is provided a system for providing information about fuel efficiency of construction machinery, including: a TMS controller obtaining information about reference fuel efficiency through a communication network from a server, and providing the information about the reference fuel efficiency as display information; and an equipment controller calculating information about current fuel efficiency by analyzing operations of constituent elements of the construction machinery.
    Type: Application
    Filed: January 24, 2013
    Publication date: November 13, 2014
    Inventors: Hong Cheol Yun, Duck Woo Park
  • Patent number: 8720629
    Abstract: The present disclosure provides a power control apparatus of a construction machine, including: an engine connected to a hydraulic pump to drive the hydraulic pump; and a controller for calculating an engine load ratio defined as a ratio of a load torque of the engine for an engine maximum torque calculated from an input engine target RPM, and calculating an engine RPM command value according to the engine load ratio such that the engine is driven at the target RPM to output the calculated engine load ratio and engine RPM command value to the engine.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: May 13, 2014
    Assignee: Doosan Infracore Co., Ltd.
    Inventors: Won Sun Sohn, Duck Woo Park, Jae Seok Bang
  • Publication number: 20130255244
    Abstract: The present disclosure relates to a hydraulic system for a construction machine which uses an electric hydraulic pump, and more particularly, to a hydraulic system including an emergency control unit for temporarily driving the construction machine when an electronic control unit controlling the electric hydraulic pumps fails to operate.
    Type: Application
    Filed: December 21, 2011
    Publication date: October 3, 2013
    Applicant: DOOSAN INFRACORE CO., LTD.
    Inventors: Jung Mug Shin, Duck Woo Park, Woo Yong Jung
  • Patent number: 8452495
    Abstract: The present disclosure relates to an apparatus for contingency controlling an engine rotational speed of a heavy construction equipment, which is capable of contingency controlling the speed of an engine when a controller of the heavy construction equipment such as an excavator does not operate normally. The apparatus for contingency controlling an engine rotational speed including a machine control unit generating a driving signal to control an operation of the engine by transferring a control value received from a control dial to an engine control unit may include: an instrument panel electrically connected with the engine control unit and allowing an operator to select and control a desired engine rotational speed because a control algorithm for the engine rotational speed is made into a database; and a connection switch electrically connecting the instrument panel and the engine control unit when the control dial or the machine control unit does not operate normally.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: May 28, 2013
    Assignee: Doosan Infracore Co., Ltd.
    Inventors: Duck Woo Park, Hong Cheol Yun
  • Publication number: 20120251332
    Abstract: The present disclosure provides a power control apparatus of a construction machine, including: an engine connected to a hydraulic pump to drive the hydraulic pump; and a controller for calculating an engine load ratio defined as a ratio of a load torque of the engine for an engine maximum torque calculated from an input engine target RPM, and calculating an engine RPM command value according to the engine load ratio such that the engine is driven at the target RPM to output the calculated engine load ratio and engine RPM command value to the engine.
    Type: Application
    Filed: December 22, 2010
    Publication date: October 4, 2012
    Applicant: DOOSAN INFRACORE CO., LTD.
    Inventors: Won Sun Sohn, Duck Woo Park, Jae Seok Bang
  • Publication number: 20110264338
    Abstract: The present disclosure relates to an apparatus for contingency controlling an engine rotational speed of a heavy construction equipment, which is capable of contingency controlling the speed of an engine when a controller of the heavy construction equipment such as an excavator does not operate normally. The apparatus for contingency controlling an engine rotational speed including a machine control unit generating a driving signal to control an operation of the engine by transferring a control value received from a control dial to an engine control unit may include: an instrument panel electrically connected with the engine control unit and allowing an operator to select and control a desired engine rotational speed because a control algorithm for the engine rotational speed is made into a database; and a connection switch electrically connecting the instrument panel and the engine control unit when the control dial or the machine control unit does not operate normally.
    Type: Application
    Filed: December 22, 2009
    Publication date: October 27, 2011
    Applicant: Doosan Infracore Co., Ltd.
    Inventors: Duck Woo Park, Hong Cheol Yun