Patents by Inventor Chenfei Li

Chenfei Li 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).

  • Publication number: 20250031608
    Abstract: A manned mower includes a vehicle frame and a support portion used for supporting a user; a traveling wheel set supporting the vehicle frame; a mowing element driven by a mowing electric motor; and a controller configured to apply a drive signal to a driver circuit to control the operation of the mowing electric motor. The controller is configured to receive a first electrical parameter related to the current of the mowing electric motor and when the first electrical parameter satisfies a first preset condition, limit the first electrical parameter within a preset range. When the first electrical parameter is limited within the preset range, the controller is further configured to selectively use a first method or a second method to determine the rotor position of the mowing electric motor so that the mowing electric motor does not stop when the first electrical parameter is within the preset range.
    Type: Application
    Filed: July 16, 2024
    Publication date: January 30, 2025
    Inventors: Li Pan, Zhiqiang Zou, Tonghao Li, Lei Wang, Chenfei Li, Chao Meng, Shoubin Wang, Yueyue Zhao
  • Patent number: D999721
    Type: Grant
    Filed: May 17, 2022
    Date of Patent: September 26, 2023
    Inventors: Di Qi, Wenchao Wang, Yu Li, Chenfei Li, Zhe Zhang