Patents by Inventor Jinkui Ma

Jinkui Ma 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).

  • SEALING QUALITY DETECTION DEVICE AND SEALING QUALITY EVALUATING METHOD FOR GAS EXTRACTION BOREHOLES
    Publication number: 20240384644
    Abstract: A sealing quality detection device for gas extraction boreholes includes a detection host, a detection pipe, a sealing element, and a three-way pipe. A plurality of air inlets and a plurality of exhaust ports are formed above the detection host, a negative pressure injector is arranged in the detection host, a quick joint and a control switch are also arranged on the detection host, the quick joint is used to be connected with an underground wind pipe, the underground wind pipe is connected to an underground compressed air tube, and the control switch is used for starting and switching off the negative pressure injector in the detection host. A sealing quality evaluating method for gas extraction boreholes is provided.
    Type: Application
    Filed: March 28, 2023
    Publication date: November 21, 2024
    Inventors: Weiwei SU, Yujin QIN, Rui ZHOU, Zhongyu ZHENG, Jie LI, Fuchao TIAN, Yongming ZOU, Yang XU, Xunqiang YAN, Weili SUN, Jinkui MA
  • Sealing quality detection device and sealing quality evaluating method for gas extraction boreholes
    Patent number: 12140013
    Abstract: A sealing quality detection device for gas extraction boreholes includes a detection host, a detection pipe, a sealing element, and a three-way pipe. A plurality of air inlets and a plurality of exhaust ports are formed above the detection host, a negative pressure injector is arranged in the detection host, a quick joint and a control switch are also arranged on the detection host, the quick joint is used to be connected with an underground wind pipe, the underground wind pipe is connected to an underground compressed air tube, and the control switch is used for starting and switching off the negative pressure injector in the detection host. A sealing quality evaluating method for gas extraction boreholes is provided.
    Type: Grant
    Filed: March 28, 2023
    Date of Patent: November 12, 2024
    Assignee: CHINA COAL TECHNOLOGY & ENGINEERING GROUP SHENYANG ENGINEERING COMPANY
    Inventors: Weiwei Su, Yujin Qin, Rui Zhou, Zhongyu Zheng, Jie Li, Fuchao Tian, Yongming Zou, Yang Xu, Xunqiang Yan, Weili Sun, Jinkui Ma