Patents by Inventor Kuidong Zhang

Kuidong Zhang 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 reverse wiring protection
    Patent number: 7403086
    Abstract: A new type of switching mechanism for a ground fault circuit interrupter (GFCI) with reverse wiring protection preferably includes two pairs of fixed contact holders, each member of each pair having at least one fixed contact at one end; a pair of movable contact holders, each having an end having one or more of movable contacts, each movable contact being arranged for contacting one of the fixed contacts; and a movable assembly that moves between first and second positions, wherein the first position is a position in which each of the contacts of the fixed contact holders makes contact with one of the contacts of the movable end of one of the movable contact holders, and wherein the second position is a position in which the contacts of the fixed contact holders are separated from the contacts of the movable contact holders.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: July 22, 2008
    Assignee: General Protecht Group U.S., Inc.
    Inventors: Zhixin Wu, Yinxian Wang, Kuidong Zhang
  • Ground fault circuit interrupter with reverse wiring protection
    Publication number: 20060018062
    Abstract: A new type of switching mechanism for a ground fault circuit interrupter (GFCI) with reverse wiring protection preferably includes two pairs of fixed contact holders, each member of each pair having at least one fixed contact at one end; a pair of movable contact holders, each having an end having one or more of movable contacts, each movable contact being arranged for contacting one of the fixed contacts; and a movable assembly that moves between first and second positions, wherein the first position is a position in which each of the contacts of the fixed contact holders makes contact with one of the contacts of the movable end of one of the movable contact holders, and wherein the second position is a position in which the contacts of the fixed contact holders are separated from the contacts of the movable contact holders.
    Type: Application
    Filed: July 19, 2005
    Publication date: January 26, 2006
    Applicant: Zhejiang Dongzheng Electrical Co.
    Inventors: Zhixin Wu, Yinxian Wang, Kuidong Zhang
  • Ground fault circuit interrupter with reverse wiring protection
    Patent number: 6954125
    Abstract: A new type of switching mechanism for a ground fault circuit interrupter (GFCI) with reverse wiring protection preferably includes two pairs of fixed contact holders, each member of each pair having at least one fixed contact at one end; a pair of movable contact holders, each having an end having one or more of movable contacts, each movable contact being arranged for contacting one of the fixed contacts; and a movable assembly that moves between first and second positions, wherein the first position is a position in which each of the contacts of the fixed contact holders makes contact with one of the contacts of the movable end of one of the movable contact holders, and wherein the second position is a position in which the contacts of the fixed contact holders are separated from the contacts of the movable contact holders.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: October 11, 2005
    Assignee: Zhejiang Dongzheng Electrical Co., Ltd.
    Inventors: Zhixin Wu, Yinxian Wang, Kuidong Zhang
  • Ground fault circuit interrupter with reverse wiring protection
    Patent number: 6946935
    Abstract: A new type of ground fault circuit interrupter (GFCI) with reverse wiring protection preferably includes a pair of fixed contact holders, each having a contact at one end; a pair of movable contact holders, each having a fixed end and a movable end, each of the movable ends having a contact; a movable assembly that moves between first and second positions, wherein the first position is a position in which each of the contacts of the fixed contact holders makes contact with one of the contacts of the movable end of one of the movable contact holders, and wherein the second position is a position in which the contacts of the fixed contact holders are separated from the contacts of the movable contact holders; an electromagnetic resetting component, which, when energized, causes the movable assembly to be in the first position; an electromagnetic tripping component, different from the electromagnetic resetting component, which, when energized, causes the movable assembly to be in the second position; and a contr
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: September 20, 2005
    Assignee: Zhejiang Dongzheng Electrical Co., Ltd.
    Inventors: Zhixin Wu, Yinxian Wang, Kuidong Zhang
  • Ground fault circuit interrupter with reverse wiring protection
    Publication number: 20040070897
    Abstract: A new type of ground fault circuit interrupter (GFCI) with reverse wiring protection preferably includes a pair of fixed contact holders, each having a contact at one end; a pair of movable contact holders, each having a fixed end and a movable end, each of the movable ends having a contact; a movable assembly that moves between first and second positions, wherein the first position is a position in which each of the contacts of the fixed contact holders makes contact with one of the contacts of the movable end of one of the movable contact holders, and wherein the second position is a position in which the contacts of the fixed contact holders are separated from the contacts of the movable contact holders; an electromagnetic resetting component, which, when energized, causes the movable assembly to be in the first position; an electromagnetic tripping component, different from the electromagnetic resetting component, which, when energized, causes the movable assembly to be in the second position; and a contr
    Type: Application
    Filed: November 15, 2002
    Publication date: April 15, 2004
    Inventors: Zhixin Wu, Yinxian Wang, Kuidong Zhang
  • Ground fault circuit interrupter with reverse wiring protection
    Publication number: 20040070474
    Abstract: A new type of switching mechanism for a ground fault circuit interrupter (GFCI) with reverse wiring protection preferably includes two pairs of fixed contact holders, each member of each pair having at least one fixed contact at one end; a pair of movable contact holders, each having an end having one or more of movable contacts, each movable contact being arranged for contacting one of the fixed contacts; and a movable assembly that moves between first and second positions, wherein the first position is a position in which each of the contacts of the fixed contact holders makes contact with one of the contacts of the movable end of one of the movable contact holders, and wherein the second position is a position in which the contacts of the fixed contact holders are separated from the contacts of the movable contact holders.
    Type: Application
    Filed: March 13, 2003
    Publication date: April 15, 2004
    Inventors: Zhixin Wu, Yinxian Wang, Kuidong Zhang