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: 20260020527
    Abstract: A manned mower includes a brake mechanism configured to perform a braking action to brake a walking mechanism; a controller configured to control operation of at least the walking mechanism and a mowing assembly; and a brake motor connected to the brake mechanism and configured to drive the brake mechanism to switch between a braking state and a release state. The controller is further configured to, when receiving an anomaly signal, control the brake motor to operate to drive the brake mechanism to switch from the release state to the braking state.
    Type: Application
    Filed: July 10, 2025
    Publication date: January 22, 2026
    Inventors: Tonghao Li, Zhen Wang, Shoubin Wang, Jiawei Sun, Chenfei Li, Lei Wang, Li Pan, Chao Meng, Zichun Tang
  • Publication number: 20260020526
    Abstract: An outdoor traveling device includes a controller configured to control a parking brake mechanism to switch between a braking state for braking a walking mechanism and an unlocking state for releasing the walking mechanism from braking. The controller is further configured to, when receiving a braking instruction, control the parking brake mechanism to enter the braking state and in the braking state, acquire a current-related parameter of a walking motor and output a control signal for reversely rotating the walking motor to a driver circuit based on the current-related parameter to control the walking motor.
    Type: Application
    Filed: July 10, 2025
    Publication date: January 22, 2026
    Inventors: Tonghao Li, Zhen Wang, Shoubin Wang, Jiawei Sun, Chenfei Li, Lei Wang, Li Pan, Chao Meng, Zichun Tang
  • Publication number: 20250346127
    Abstract: An outdoor work vehicle includes a walking wheel group including a first walking wheel and a second walking wheel; a frame connected to the first walking wheel and the second walking wheel; a support mounted to the frame and configured to support an operator; a walking motor having a drive shaft and configured to drive the walking wheel group; and a first energy storage device including a first energy storage unit and a second energy storage unit; where the first energy storage unit and the second energy storage unit are located between the first walking wheel and the second walking wheel and in a region on the rear side of the walking motor and have different energy.
    Type: Application
    Filed: July 23, 2025
    Publication date: November 13, 2025
    Inventors: Min Zhang, Zhen Wang, Toshinari Yamaoka, Jian Yang, Lei Wang, Chenfei Li, Yueyue Zhao
  • 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