Patents by Inventor Huayang Lu

Huayang Lu 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: 8462471
    Abstract: The present invention provides a circuit interrupting device which comprises a leakage current detection and protection circuit containing a simulated leakage current generation circuit which is capable of automatically generating a simulated leakage current when the circuit interrupting device is properly wired and in a tripped state to automatically test the functions of the key components of the circuit interrupting device. The simulated leakage current generation circuit comprises a normally closed switch and a normally open switch. The leakage current detection and protection circuit further comprises a normal status indicator light and a power output indicator light to indicate whether the circuit interrupting device is working properly and/or reverse wired. The circuit interrupting device further comprises a reset switch, a pair of discharged metal pieces, and four pairs of circuit interrupting contacts.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: June 11, 2013
    Inventors: Huadao Huang, Huayang Lu
  • Patent number: 8300368
    Abstract: The present invention provides a circuit interrupting device, preferably a ground fault circuit interrupter, which provides a quick and reliable connection/disconnection of electrical continuity through a combined use of a reset spring and a quick trip spring; an innovative circuit interrupting assembly containing a pair of input flexible metal pieces, a pair of user accessible load flexible metal pieces, and two pairs of fixed contacts on the load terminals; an automatic end-of-life testing mechanism by way of a simulated leakage current metal piece assembly; a reverse wiring protection by way of a reset start switch; an electrical surge protection through a power discharge mechanism; and a periodical end-of-life testing using a timer chip.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: October 30, 2012
    Assignee: Huadao Huang
    Inventors: Huadao Huang, Huayang Lu
  • Patent number: 8233251
    Abstract: The present invention provides a novel circuit interrupting device, preferably a ground fault circuit interrupter, which contains a reset button that is capable of interacting with a test button to perform an end-of-life-component test on the circuit interrupting device. The circuit interrupting device also contains a reset switch coupled to the reset button which is capable of disallowing reset if the device is miswired and/or fails the end-of-life-component test. Only when the circuit interrupting device is properly wired, in a tripped state, and all of the key components in the circuit interrupting device are working properly, the depression of the reset button allows the device to be reset.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: July 31, 2012
    Inventors: Huadao Huang, Huayang Lu
  • Publication number: 20110211283
    Abstract: The present invention provides a circuit interrupting device which is capable of providing protection against electrical surge through its innovative electrical discharge design; establishing or discontinuing electrical continuity among the input power source, output load, and user accessible load through its innovative contacts connection/disconnection design; automatic or manual testing of the condition of the key components in the circuit interrupting device by way of a simulated leakage current; and testing whether the device is properly wired by way of a reset switch.
    Type: Application
    Filed: May 6, 2011
    Publication date: September 1, 2011
    Applicant: Huadao HUANG
    Inventors: Huadao HUANG, Huayang Lu
  • Publication number: 20100073178
    Abstract: The present invention provides a circuit interrupting device which comprises a leakage current detection and protection circuit containing a simulated leakage current generation circuit which is capable of automatically generating a simulated leakage current when the circuit interrupting device is properly wired and in a tripped state to automatically test the functions of the key components of the circuit interrupting device. The simulated leakage current generation circuit comprises a normally closed switch and a normally open switch. The leakage current detection and protection circuit further comprises a normal status indicator light and a power output indicator light to indicate whether the circuit interrupting device is working properly and/or reverse wired. The circuit interrupting device further comprises a reset switch, a pair of discharged metal pieces, and four pairs of circuit interrupting contacts.
    Type: Application
    Filed: November 19, 2009
    Publication date: March 25, 2010
    Inventors: Huadao HUANG, Huayang LU
  • Patent number: 7633726
    Abstract: This invention provides protection against an electricity leak and prevents error in reverse wiring. Also, when the ground fault circuit interrupter has come to the end of its life and its functions fail, it can set off an alarm prompt signal, reminding the user to replace the interrupter in a prompt manner; when a certain part or accessory of the ground fault circuit interrupter fails, especially when the primary electromagnetic coil cannot work in a normal manner, the power output of the interrupter may be cut off through the secondary electromagnetic coil; or the test button may be pressed to mechanically cut off the power output of the interrupter. This invention has powerful applications, with good safe guard and is safe to use, thus effectively ensuring the personal safety of the user as well as the safety of the appliances.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: December 15, 2009
    Inventors: Huadao Huang, Huayang Lu
  • Patent number: 7576959
    Abstract: The present invention provides a novel circuit interrupting device capable of performing an automatic end-of-life test using a status test switch (KR-1), when the device is properly wired and the reset button is at a tripped state. The present invention is further characterized by its novel reset mechanism using a reset start switch (KR-4), a novel electrical connection between an input power end, an output power end, and a user accessible end to establish or discontinue electricity in the circuit interrupting device, and a novel test mechanism which uses a test button in connection with a rotatable lever to provide a dual test function to either test the components of the circuit interrupting device when the power is on and the reset button is at a reset state, or provide a mechanical trip when the reset button cannot be tripped by artificially generating an electric leakage current. Finally, the present invention provides a method to monitor the end-of-life of the device.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: August 18, 2009
    Inventors: Huadao Huang, Huayang Lu
  • Publication number: 20090161271
    Abstract: The present invention provides a novel circuit interrupting device, preferably a ground fault circuit interrupter, which contains a reset button that is capable of interacting with a test button to perform an end-of-life-component test on the circuit interrupting device. The circuit interrupting device also contains a reset switch coupled to the reset button which is capable of disallowing reset if the device is miswired and/or fails the end-of-life-component test. Only when the circuit interrupting device is properly wired, in a tripped state, and all of the key components in the circuit interrupting device are working properly, the depression of the reset button allows the device to be reset.
    Type: Application
    Filed: December 8, 2008
    Publication date: June 25, 2009
    Applicant: Huadao Huang
    Inventors: Huadao Huang, Huayang Lu
  • Publication number: 20090086389
    Abstract: The present invention provides a circuit interrupting device, preferably a ground fault circuit interrupter, which provides a quick and reliable connection/disconnection of electrical continuity through a combined use of a reset spring and a quick trip spring; an innovative circuit interrupting assembly containing a pair of input flexible metal pieces, a pair of user accessible load flexible metal pieces, and two pairs of fixed contacts on the load terminals; an automatic end-of-life testing mechanism by way of a simulated leakage current metal piece assembly; a reverse wiring protection by way of a reset start switch; an electrical surge protection through a power discharge mechanism; and a periodical end-of-life testing using a timer chip.
    Type: Application
    Filed: July 14, 2008
    Publication date: April 2, 2009
    Inventors: Huadao Huang, Huayang Lu
  • Publication number: 20080170341
    Abstract: The present invention provides a novel circuit interrupting device which is capable of performing an automatic end-of-life test using a status test switch (KR-1), when the device is properly wired and the reset button is at a tripped state. The present invention is further characterized by its novel reset mechanism using a reset start switch (KR-4), which comprises a spring piece, a conductive pin, and a 7-shaped metal piece. Additionally, the present invention provides a novel electrical connection between an input power end, an output power end, and a user accessible end to establish or discontinue electricity in the circuit interrupting device.
    Type: Application
    Filed: April 25, 2007
    Publication date: July 17, 2008
    Inventors: Huadao Huang, Huayang Lu
  • Publication number: 20080094765
    Abstract: The present invention provides to a circuit interrupting device, particularly a ground fault circuit interrupter (GFCI), with a test circuit which is capable of automatically generating a simulated leakage current to detect whether the service life of the circuit interrupting device has ended, i.e., whether the main components of the device are working properly, when the device is properly connected to power input terminals and in a tripped state. The test circuit contains an end-of-service-life integrated circuit chip, which is connected to a switch that interacts with the reset button, thereby, by observing whether the device is capable of resetting, a user can determine whether the service life of the device has ended, i.e., if the device can be reset, the device is working properly; if the device cannot be reset, the service life of the device has ended.
    Type: Application
    Filed: October 3, 2007
    Publication date: April 24, 2008
    Inventors: Huadao Huang, Huayang Lu
  • Patent number: 7317600
    Abstract: The present invention provides to a circuit interrupting device, particularly a ground fault circuit interrupter (GFCI), with a test circuit which is capable of automatically generating a simulated leakage current to detect whether the service life of the circuit interrupting device has ended, i.e., whether the main components of the device are working properly, when the device is properly connected to power input terminals and in a tripped state. The test circuit contains an end-of-service-life integrated circuit chip, which is connected to a switch that interacts with the reset button, thereby, by observing whether the device is capable of resetting, a user can determine whether the service life of the device has ended, i.e., if the device can be reset, the device is working properly; if the device cannot be reset, the service life of the device has ended.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: January 8, 2008
    Inventors: Huadao Huang, Huayang Lu
  • Patent number: 7315227
    Abstract: This invention discloses a ground fault circuit interrupter capable of detecting its end of life, and is characterized by: a pair of flexible metal sheets connected to the power output end are added on the circuit board of the interrupter, and there is a pair of moving contacts on the metal sheets; there are two pairs of fixed contacts on the power output conductors; the two pairs of fixed contacts on the power output conductors respectively correspond to the moving contacts on the power input metal sheets and the moving contacts on flexible metal sheets, thus forming two groups and four pairs of switches. There is also a tripping apparatus on the circuit board, which can release/trip the interrupter, thus cutting off the power output of the interrupter. An end of life detection circuit has also been added to the circuit board. After the interrupter is energized, various components in the interrupter are automatically detected.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: January 1, 2008
    Inventors: Huadao Huang, Huayang Lu
  • Patent number: 7195500
    Abstract: The present invention provides a GFCI that not only has ground fault protection, but also is capable of providing reverse wiring protection as well as detection of end of the service life of the GFCI by way of utilizing an end of life detection control circuit in connection with the reset button. In addition, the GFCI of the present invention provides a forcible mechanical tripping assembly by way of utilizing the test button. Finally, the present invention provides method for detecting whether the service life of the GFCI has ended.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: March 27, 2007
    Inventors: Huadao Huang, Huayang Lu
  • Publication number: 20060279886
    Abstract: This invention provides protection against an electricity leak and prevents error in reverse wiring. Also, when the ground fault circuit interrupter has come to the end of its life and its functions fail, it can set off an alarm prompt signal, reminding the user to replace the interrupter in a prompt manner; when a certain part or accessory of the ground fault circuit interrupter fails, especially when the primary electromagnetic coil cannot work in a normal manner, the power output of the interrupter may be cut off through the secondary electromagnetic coil; or the test button may be pressed to mechanically cut off the power output of the interrupter. This invention has powerful applications, with good safe guard and is safe to use, thus effectively ensuring the personal safety of the user as well as the safety of the appliances.
    Type: Application
    Filed: February 27, 2006
    Publication date: December 14, 2006
    Inventors: Huadao Huang, Huayang Lu
  • Publication number: 20060274463
    Abstract: The present invention provides to a circuit interrupting device, particularly a ground fault circuit interrupter (GFCI), with a test circuit which is capable of automatically generating a simulated leakage current to detect whether the service life of the circuit interrupting device has ended, i.e., whether the main components of the device are working properly, when the device is properly connected to power input terminals and in a tripped state. The test circuit contains an end-of-service-life integrated circuit chip, which is connected to a switch that interacts with the reset button, thereby, by observing whether the device is capable of resetting, a user can determine whether the service life of the device has ended, i.e., if the device can be reset, the device is working properly; if the device cannot be reset, the service life of the device has ended.
    Type: Application
    Filed: May 22, 2006
    Publication date: December 7, 2006
    Inventors: Huadao Huang, Huayang Lu
  • Publication number: 20060238933
    Abstract: This invention discloses a ground fault circuit interrupter capable of detecting its end of life, and is characterized by: a pair of flexible metal sheets connected to the power output end are added on the circuit board of the interrupter, and there is a pair of moving contacts on the metal sheets; there are two pairs of fixed contacts on the power output conductors; the two pairs of fixed contacts on the power output conductors respectively correspond to the moving contacts on the power input metal sheets and the moving contacts on flexible metal sheets, thus forming two groups and four pairs of switches. There is also a tripping apparatus on the circuit board, which can release/trip the interrupter, thus cutting off the power output of the interrupter. An end of life detection circuit has also been added to the circuit board. After the interrupter is energized, various components in the interrupter are automatically detected.
    Type: Application
    Filed: February 27, 2006
    Publication date: October 26, 2006
    Inventors: Huadao Huang, Huayang Lu
  • Publication number: 20060193092
    Abstract: The present invention provides a GFCI that not only has ground fault protection, but also is capable of providing reverse wiring protection as well as detection of end of the service life of the GFCI by way of utilizing an end of life detection control circuit in connection with the reset button. In addition, the GFCI of the present invention provides a forcible mechanical tripping assembly by way of utilizing the test button. Finally, the present invention provides method for detecting whether the service life of the GFCI has ended.
    Type: Application
    Filed: February 27, 2006
    Publication date: August 31, 2006
    Inventors: Huadao Huang, Huayang Lu
  • Patent number: 6998945
    Abstract: A receptacle device for protection against arc faults and leakage currents, including an arc fault test button, a leakage test button, and a reset button. Test resistors are arranged below the arc fault test button and the leakage test button wherein the test resistors are coupled to an electrical circuit board. The electrical circuit board includes an arc sampling resistor to detect arc faults and a leakage detection differential transformer to detect leakage currents. In order to provide good contacts between mobile and stationary electrical contacts of the receptacle device, a reset button bias member having mobile contact bridges at its two arms is provided. Each of the mobile contact bridges has three triangularly spaced electrical contacts, corresponding to stationary electrical contacts of flexible input fingers, output conductors and electrical output leads of the receptacle device.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: February 14, 2006
    Inventors: Huadao Huang, Huayang Lu
  • Publication number: 20050012575
    Abstract: A receptacle device for protection against arc faults and leakage currents, including an arc fault test button, a leakage test button, and a reset button. Test resistors are arranged below the arc fault test button and the leakage test button wherein the test resistors are coupled to an electrical circuit board. The electrical circuit board includes an arc sampling resistor to detect arc faults and a leakage detection differential transformer to detect leakage currents. In order to provide good contacts between mobile and stationary electrical contacts of the receptacle device, a reset button bias member having mobile contact bridges at its two arms is provided. Each of the mobile contact bridges has three triangularly spaced electrical contacts, corresponding to stationary electrical contacts of flexible input fingers, output conductors and electrical output leads of the receptacle device.
    Type: Application
    Filed: December 9, 2003
    Publication date: January 20, 2005
    Applicant: Huadao HUANG
    Inventors: Huadao Huang, Huayang Lu