Patents by Inventor Min Ha Ahn

Min Ha Ahn 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).

  • Apparatus and method for controlling oil hydraulic pump for excavator
    Patent number: 9580888
    Abstract: An exemplary embodiment of the present specification relates to an apparatus for controlling a hydraulic pump for an excavator with respect to a change of an operation mode, the apparatus including: an operating unit configured to generate an operation signal according to an operation of an operator, and including a joystick or a pedal; an oil flow supplying unit configured to supply oil to actuators, in order to drive a plurality of actuators corresponding to the operation signal, and including a plurality of pumps and a plurality of logic valves; and a control unit configured to control the oil flow supplying unit by using a priority algorithm for each operation considering a use frequency and a load of the actuator with respect to a change of a predetermined operation mode according to the operation signal.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: February 28, 2017
    Assignee: Doosan Infracore Co., Ltd.
    Inventors: Min Ha Ahn, Woo Yong Jung, Dal Sik Jang, Hyeon Sik Ahn, Kwang Ho Lim
  • APPARATUS AND METHOD FOR CONTROLLING OIL HYDRAULIC PUMP FOR EXCAVATOR
    Publication number: 20150376871
    Abstract: An exemplary embodiment of the present specification relates to an apparatus for controlling a hydraulic pump for an excavator with respect to a change of an operation mode, the apparatus including: an operating unit configured to generate an operation signal according to an operation of an operator, and including a joystick or a pedal; an oil flow supplying unit configured to supply oil to actuators, in order to drive a plurality of actuators corresponding to the operation signal, and including a plurality of pumps and a plurality of logic valves; and a control unit configured to control the oil flow supplying unit by using a priority algorithm for each operation considering a use frequency and a load of the actuator with respect to a change of a predetermined operation mode according to the operation signal.
    Type: Application
    Filed: February 6, 2014
    Publication date: December 31, 2015
    Inventors: Min Ha Ahn, Woo Yong Jung, Dal Sik Jang, Hyeon Sik Ahn, Kwang Ho Lim