Patents by Inventor Xingong LIU

Xingong LIU 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).

  • Grease pumping device
    Patent number: 11560980
    Abstract: A grease pumping device includes a pump body, a driving mechanism, a plunger pair, a reversing valve and a lever mechanism. A switching action between each valve position of a valve core of the reversing valve is driven by the lever mechanism. An output rotating shaft drives a toggle member rotating therewith, and when the output rotating shaft rotates reciprocally in forward and reverse directions, the toggle member toggles the lever mechanism in the forward and reverse directions, such that the lever mechanism swings reciprocally. At least one of the lever mechanism and the toggle member is an elastic structure, when the output rotating shaft rotates, the toggle member contacts the lever mechanism and drives the valve core to operate, when the valve core is switched to a corresponding valve position, the toggle member and the lever mechanism slide relatively by elastic deformation of the elastic structure.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: January 24, 2023
    Assignee: ZHENGZHOU AUTOL TECHNOLOGY CO., LTD.
    Inventors: Daping Zhao, Xingong Liu, Zhang Liu, Lifeng Ma
  • GREASE PUMPING DEVICE
    Publication number: 20200248868
    Abstract: A grease pumping device includes a pump body, a driving mechanism, a plunger pair, a reversing valve and a lever mechanism. A switching action between each valve position of a valve core of the reversing valve is driven by the lever mechanism. An output rotating shaft drives a toggle member rotating therewith, and when the output rotating shaft rotates reciprocally in forward and reverse directions, the toggle member toggles the lever mechanism in the forward and reverse directions, such that the lever mechanism swings reciprocally. At least one of the lever mechanism and the toggle member is an elastic structure, when the output rotating shaft rotates, the toggle member contacts the lever mechanism and drives the valve core to operate, when the valve core is switched to a corresponding valve position, the toggle member and the lever mechanism slide relatively by elastic deformation of the elastic structure.
    Type: Application
    Filed: April 24, 2020
    Publication date: August 6, 2020
    Applicant: ZHENGZHOU AUTOL TECHNOLOGY CO., LTD.
    Inventors: Daping ZHAO, Xingong LIU, Zhang LIU, Lifeng MA