Patents by Inventor Yingxian LI

Yingxian 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).

  • Patent number: 11411385
    Abstract: A timing leakage protection circuit and a device containing the same. The timing leakage protection circuit includes a sensing unit, a switching unit, a ground fault circuit interrupter (GFCI) control unit, a switching control unit and an adjustable timing unit. The sensing unit and switching unit are used to be connected in series in a circuit to be protected. The switching control unit is configured to receive a control signal output by the GFCI control unit and control the switching unit to be open when receiving the control signal, so as to interrupt a circuit to be protected. Compared to the traditional leakage protection circuit, the circuit provided herein further has a timing function, so that the timing period can be controlled correspondingly according to different voltages, thereby reducing the circuit complexity and cost.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: August 9, 2022
    Assignee: KEDU ELECTRIC CO., LTD.
    Inventors: Chunkai Zheng, Yingxian Li
  • Publication number: 20210305803
    Abstract: A leakage protection switch. Control ends of a first drive submodule and a second drive submodule are connected to a microcontroller, and output ends of the two drive submodules are connected to a coil attract module. After the microcontroller sends out a trip signal, the action of the coil attract module is controlled by the two drive submodules, which reduces the occurrence of failure action and improves the control reliability of the leakage protection switch.
    Type: Application
    Filed: June 10, 2021
    Publication date: September 30, 2021
    Inventors: Chunkai ZHENG, Yingxian LI
  • Publication number: 20210296880
    Abstract: A timing leakage protection circuit and a device containing the same. The timing leakage protection circuit includes a sensing unit, a switching unit, a ground fault circuit interrupter (GFCI) control unit, a switching control unit and an adjustable timing unit. The sensing unit and switching unit are used to be connected in series in a circuit to be protected. The switching control unit is configured to receive a control signal output by the GFCI control unit and control the switching unit to be open when receiving the control signal, so as to interrupt a circuit to be protected. Compared to the traditional leakage protection circuit, the circuit provided herein further has a timing function, so that the timing period can be controlled correspondingly according to different voltages, thereby reducing the circuit complexity and cost.
    Type: Application
    Filed: June 8, 2021
    Publication date: September 23, 2021
    Inventors: Chunkai ZHENG, Yingxian LI