Patents by Inventor Jong Hyung YIM

Jong Hyung YIM 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: 9739036
    Abstract: According to the present invention, a hydraulic system of construction equipment is implemented as a close center system, which converts an input signal of an electric or hydraulic joystick into a speed signal of a work apparatus, and controls a speed of the work apparatus regardless of an external load condition, thereby minimizing fatigue of a worker to improve work efficiency, improving a work apparatus operation ability of an unskilled person, and patterning standardized work to implement automation of construction equipment.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: August 22, 2017
    Assignee: Hyundai Construction Equipment Co., Ltd.
    Inventors: Jong Chan Lee, Lim Gook Choi, Young Min Kwon, Jong Hyung Yim
  • Patent number: 9598839
    Abstract: Disclosed is a construction equipment including: a boom operating unit including a boom, a boom cylinder, and a boom head and rod return solenoids for controlling the extension of the boom by controlling the ascending and descending of the boom cylinder; an arm operating unit comprising an arm and an arm cylinder so as to move the arm by controlling the extension of the arm cylinder; and a control unit for generating a flow path connection signal in at least a part of the boom head and rod return solenoids upon operation of an arm lever in a boom float mode so as to control the boom cylinder.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: March 21, 2017
    Assignee: HYUNDAI HEAVY INDUSTRIES CO., LTD.
    Inventors: Kye Hyun Choi, Jong Hyung Yim, Sang Hoon Lee, Ho Youn Lee
  • Publication number: 20160060846
    Abstract: Disclosed is a method of controlling work of an excavator. When a supply flow rate of hydraulic oil which is supplied to a working apparatus by a first pump among first and second pumps driven by the rotational force of the engine is higher than a requirement flow rate required by the working apparatus, the RPM of an engine is reduced, and hydraulic oil pumped by the first and second pumps are supplied to the working apparatus. Accordingly, an energy-saving effect such as a gas mileage of an excavator being reduced is obtained.
    Type: Application
    Filed: August 17, 2015
    Publication date: March 3, 2016
    Applicant: Hyundai Heavy Industries Co. Ltd.
    Inventors: Ho Youn LEE, Jong Hyung YIM, Jun Seong IM, Kye Hyun CHOI
  • Publication number: 20150368878
    Abstract: Disclosed is a construction equipment including: a boom operating unit including a boom, a boom cylinder, and a boom head and rod return solenoids for controlling the extension of the boom by controlling the ascending and descending of the boom cylinder; an arm operating unit comprising an arm and an arm cylinder so as to move the arm by controlling the extension of the arm cylinder; and a control unit for generating a flow path connection signal in at least a part of the boom head and rod return solenoids upon operation of an arm lever in a boom float mode so as to control the boom cylinder.
    Type: Application
    Filed: December 13, 2013
    Publication date: December 24, 2015
    Applicant: HYUNDAI HEAVY INDUSTRIES CO., LTD.
    Inventors: Kye Hyun CHOI, Jong Hyung YIM, Sang Hoon LEE, Ho Youn LEE
  • Publication number: 20150308078
    Abstract: According to the present invention, a hydraulic system of construction equipment is implemented as a close center system, which converts an input signal of an electric or hydraulic joystick into a speed signal of a work apparatus, and controls a speed of the work apparatus regardless of an external load condition, thereby minimizing fatigue of a worker to improve work efficiency, improving a work apparatus operation ability of an unskilled person, and patterning standardized work to implement automation of construction equipment.
    Type: Application
    Filed: November 20, 2013
    Publication date: October 29, 2015
    Applicant: HYUNDAI HEAVY INDUSTRIES CO., LTD.
    Inventors: Jong Chan LEE, Lim Gook CHOI, Young Min KWON, Jong Hyung YIM