Patents by Inventor Yoon Seok JANG

Yoon Seok JANG 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).

  • Hydraulic system for construction machine
    Patent number: 9829013
    Abstract: The present disclosure relates to a hydraulic system for a construction machine, and more particularly, to a hydraulic system for a construction machine including a plurality of actuators, in which each of the actuators includes a pump/motor, is operated under a control of a corresponding pump/motor, and stores working oil in an accumulator or receives the working oil supplemented from the accumulator in accordance with a difference between a flow rate entering the actuator and a flow rate discharged from the actuator.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: November 28, 2017
    Assignee: DOOSAN INFRACORE CO., LTD.
    Inventors: Yong Lak Cho, Dal Sik Jang, Woo Yong Jung, Min Ha An, A Reum Seo, Sang Woo Lee, Yoon Seok Jang
  • HYDRAULIC SYSTEM FOR CONSTRUCTION MACHINE
    Publication number: 20160032945
    Abstract: The present disclosure relates to a hydraulic system for a construction machine, and more particularly, to a hydraulic system for a construction machine including a plurality of actuators, in which each of the actuators includes a pump/motor, is operated under a control of a corresponding pump/motor, and stores working oil in an accumulator or receives the working oil supplemented from the accumulator in accordance with a difference between a flow rate entering the actuator and a flow rate discharged from the actuator.
    Type: Application
    Filed: March 13, 2014
    Publication date: February 4, 2016
    Inventors: Yong Lak CHO, Dal Sik JANG, Woo Yong JUNG, Min Ha AN, A Reum SEO, Sang Woo LEE, Yoon Seok JANG