Patents by Inventor Wenqi Zhen

Wenqi Zhen 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).

  • RIDING LAWN MOWER
    Publication number: 20220111737
    Abstract: A riding lawn mower includes a running assembly, a power output assembly, a power supply device, a driver circuit, an operating device, and a control module. The running assembly includes running wheels and a first motor for driving the running wheels. The operating device is configured to set at least one of target torque or a target rotational speed of the first motor. The control module is configured to output a control signal to the driver circuit to make an input current or an input voltage of the first motor vary with a rotor position of the first motor and make an actual torque of the first motor reach or basically reach the target torque within a preset time.
    Type: Application
    Filed: December 20, 2021
    Publication date: April 14, 2022
    Inventors: Dezhong Yang, Xiubo Dai, Lei Wang, Wenqi Zhen
  • Power tool and control method thereof
    Patent number: 11258389
    Abstract: A controller of a power tool is configured to, based on a sampled current of a motor of the power tool, output control signals that change with a change of a position of a rotor of the motor to control a drive circuit of the power tool such that an input voltage and/or a current of the motor changes approximately in a sine wave.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: February 22, 2022
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Yanqing Xu, Hongwei Wang, Xiaogang Ding, Tiantian Yin, Dezhong Yang, Xiubo Dai, Wenqi Zhen
  • POWER TOOL AND CONTROL METHOD THEREOF
    Publication number: 20200412286
    Abstract: A controller of a power tool is configured to, based on a sampled current of a motor of the power tool, output control signals that change with a change of a position of a rotor of the motor to control a drive circuit of the power tool such that an input voltage and/or a current of the motor changes approximately in a sine wave.
    Type: Application
    Filed: September 9, 2020
    Publication date: December 31, 2020
    Inventors: Yanqing Xu, Hongwei Wang, Xiaogang Ding, Tiantian Yin, Dezhong Yang, Xiubo Dai, Wenqi Zhen