Patents by Inventor Liang HA

Liang HA 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).

  • Regeneration control hydraulic system
    Patent number: 11396737
    Abstract: A regeneration control hydraulic system for an excavator, including at least one hydraulic pump, an actuator, a regeneration oil path, and a regeneration cut-off oil path. The regeneration oil path is configured to send a return oil as a regeneration oil to a cavity having a negative pressure of the actuator. The regeneration oil path is provided with a regeneration valve and a first control valve. The first control valve is configured to control the regeneration oil to enter the cavity having the negative pressure of the actuator when a working device of the excavator retracts inwards, or to control the oil to be discharged from the actuator to the regeneration cut-off oil path when the working device swings outwards. The regeneration cut-off oil path is configured to send the regeneration oil passing through the regeneration valve or the oil discharged from the actuator to other destinations.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: July 26, 2022
    Assignee: JIANGSU HENGLI HYDRAULIC TECHNOLOGY CO., LTD.
    Inventors: Liping Wang, Guohe Huang, Jing Jia, Liang Ha, Hongguang Liu, Junxiang Han, Li Zhai
  • REGENERATION CONTROL HYDRAULIC SYSTEM
    Publication number: 20220034070
    Abstract: A regeneration control hydraulic system for an excavator, including at least one hydraulic pump, an actuator, a regeneration oil path, and a regeneration cut-off oil path. The regeneration oil path is configured to send a return oil as a regeneration oil to a cavity having a negative pressure of the actuator. The regeneration oil path is provided with a regeneration valve and a first control valve. The first control valve is configured to control the regeneration oil to enter the cavity having the negative pressure of the actuator when a working device of the excavator retracts inwards, or to control the oil to be discharged from the actuator to the regeneration cut-off oil path when the working device swings outwards. The regeneration cut-off oil path is configured to send the regeneration oil passing through the regeneration valve or the oil discharged from the actuator to other destinations.
    Type: Application
    Filed: September 22, 2020
    Publication date: February 3, 2022
    Inventors: Liping WANG, Guohe HUANG, Jing JIA, Liang HA, Hongguang LIU, Junxiang HAN, Li ZHAI