Patents by Inventor Youqian Liu

Youqian 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).

  • Large-dip-angle self-leveling device
    Patent number: 12135110
    Abstract: A large-dip-angle self-leveling device is provided. The device comprises a mounting base platform arranged on a mounting stand column and a support cylinder connected with the mounting base platform. A leveling plate is arranged at the top of the mounting base platform, and a leveling platform is arranged on the leveling plate. A spirit bubble indicator and a control circuit board are arranged on the leveling platform. A connecting rod of balance weight is arranged in the support cylinder, one end of the connecting rod of balance weight is connected with the leveling platform, and the other end is connected with a balance weight. A four-core cable penetrates through the connecting rod of balance weight and the balance weight. Observation windows are symmetrically arranged at the lower part of the support cylinder. A melting pool is arranged at the bottom in the support cylinder.
    Type: Grant
    Filed: April 4, 2022
    Date of Patent: November 5, 2024
    Assignee: Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences
    Inventors: Ji Chen, Youqian Liu, Haiming Dang, Jiexuan Kang, Shouhong Zhang, Jinchang Wang, Guilong Wu, Tianchun Dong, Zhiwei Wang, Yaojun Zhao
  • LARGE-DIP-ANGLE SELF-LEVELING DEVICE
    Publication number: 20220356984
    Abstract: A large-dip-angle self-leveling device is provided. The device comprises a mounting base platform arranged on a mounting stand column and a support cylinder connected with the mounting base platform. A leveling plate is arranged at the top of the mounting base platform, and a leveling platform is arranged on the leveling plate. A spirit bubble indicator and a control circuit board are arranged on the leveling platform. A connecting rod of balance weight is arranged in the support cylinder, one end of the connecting rod of balance weight is connected with the leveling platform, and the other end is connected with a balance weight. A four-core cable penetrates through the connecting rod of balance weight and the balance weight. Observation windows are symmetrically arranged at the lower part of the support cylinder. A melting pool is arranged at the bottom in the support cylinder.
    Type: Application
    Filed: April 4, 2022
    Publication date: November 10, 2022
    Inventors: JI CHEN, Youqian Liu, Haiming Dang, Jiexuan Kang, Shouhong Zhang, Jinchang Wang, Guilong Wu, Tianchun Dong, Zhiwei Wang, Yaojun Zhao