Patents by Inventor Wen Hu Shi

Wen Hu Shi 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).

  • Surge protection device using metal oxide varistors (MOVs) as the active energy control multiple gap discharging chain
    Patent number: 8508326
    Abstract: The present invention may provide a surge protection device, which may include a reference node, first, second, and third nodes, a first arcing section (GAP) coupled between the first and second nodes, and configured to receive a surge voltage from the first node, a first metal oxide varistor (MOV) coupled between the second and reference nodes, and configured to reduce the surge voltage to a first sub-surge voltage at the second node, a second arcing section (GAP) coupled between the second and third nodes, and configured to receive the first sub-surge voltage from the second node, and a second metal oxide varistor (MOV) coupled between the third and reference nodes, and configured to reduce the first sub-surge voltage to a second sub-surge voltage at the third node.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: August 13, 2013
    Assignee: Shenzhen Dowin Lighting Technologies Co., Ltd.
    Inventors: Guo Yao Kang, Hui Ping Guo, Bing Yu Shi, Wen Hu Shi, Rong Huang, Ya Ping Guo
  • SURGE PROTECTION DEVICE USING METAL OXIDE VARISTORS (MOVs) AS THE ACTIVE ENERGY CONTROL MULTIPLE GAP DISCHARGING CHAIN
    Publication number: 20120112872
    Abstract: The present invention may provide a surge protection device, which may include a reference node, first, second, and third nodes, a first arcing section (GAP) coupled between the first and second nodes, and configured to receive a surge voltage from the first node, a first metal oxide varistor (MOV) coupled between the second and reference nodes, and configured to reduce the surge voltage to a first sub-surge voltage at the second node, a second arcing section (GAP) coupled between the second and third nodes, and configured to receive the first sub-surge voltage from the second node, and a second metal oxide varistor (MOV) coupled between the third and reference nodes, and configured to reduce the first sub-surge voltage to a second sub-surge voltage at the third node.
    Type: Application
    Filed: November 8, 2011
    Publication date: May 10, 2012
    Applicant: SHENZHEN DOWIN LIGHTNING TECHNOLOGY, CO. LTD.
    Inventors: Guo Yao Kang, Hui Ping Guo, Bing Yu Shi, Wen Hu Shi, Rong Huang, Ya Ping Guo