Patents by Inventor Cheng Zhi ZENG

Cheng Zhi ZENG 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).

  • Ground Fault Circuit Interrupter With End-Of-Life Indicator
    Publication number: 20100134306
    Abstract: A circuit interrupter with end-of-life indicator is provided. A fuse is provided between the power supply and the control chip, and between the power supply and the main circuit. If the current passing through the control chip or the main circuit is drawing too much current, it indicates a short-circuit fault has occurred. In this case, the fuse is melted, and cutting off power supply to the control chip and the main circuit. An end-of-life indicator light turns off to signal to the user that an fault has occurred to the GFCI device.
    Type: Application
    Filed: May 18, 2009
    Publication date: June 3, 2010
    Applicant: Wenzhou Sansheng Electric Co., Ltd.
    Inventors: Cheng Zhi ZENG, Gui Chen