Patents by Inventor BaiQin Liang

BaiQin Liang 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).

  • Residual current protection device and tripper
    Patent number: 10892128
    Abstract: The present application provides a residual-current protection device and a tripper. The residual-current protection device comprises: a flux transformer receiving a residual-current signal; a tripping output element outputting ON/OFF signals; an energy storage mechanism adapted to switch between an energy storage state and an energy release state, the energy storage mechanism having a locking unit that locks the energy storage mechanism in the energy storage state; and a transmission mechanism braked by the flux transformer, which drives the tripping output element to move and drives state of the energy storage mechanism to switch; the transmission mechanism comprising: a first rack cooperating with the locking unit, a second rack driving the tripping output element, and a reduction gear with a big gear engaged with the first rack and a small gear engaged with the second rack.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: January 12, 2021
    Assignee: ABB S.P.A.
    Inventors: Wensheng Liu, Jiancheng Ren, Baiqin Liang
  • RESIDUAL CURRENT PROTECTION DEVICE AND TRIPPER
    Publication number: 20190304730
    Abstract: The present application provides a residual-current protection device and a tripper. The residual-current protection device comprises: a flux transformer receiving a residual-current signal; a tripping output element outputting ON/OFF signals; an energy storage mechanism adapted to switch between an energy storage state and an energy release state, the energy storage mechanism having a locking unit that locks the energy storage mechanism in the energy storage state; and a transmission mechanism braked by the flux transformer, which drives the tripping output element to move and drives state of the energy storage mechanism to switch; the transmission mechanism comprising: a first rack cooperating with the locking unit, a second rack driving the tripping output element, and a reduction gear with a big gear engaged with the first rack and a small gear engaged with the second rack.
    Type: Application
    Filed: March 27, 2019
    Publication date: October 3, 2019
    Inventors: Wensheng Liu, Jiancheng Ren, Baiqin Liang
  • Motorized change-over switch
    Patent number: D571303
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: June 17, 2008
    Assignee: ABB Oy
    Inventors: Timo Jokiniemi, Erkki Rajala, Mikael Nåhls, BaiQin Liang, JinRui Cao
  • Switch
    Patent number: D643373
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: August 16, 2011
    Assignee: ABB Oy
    Inventors: Timo Jokiniemi, Harri Pollari, Martti Taimisto, Janne Rosenberg, BaiQin Liang, JinRui Cao
  • Switch
    Patent number: D655250
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: March 6, 2012
    Assignee: ABB Oy
    Inventors: Timo Jokiniemi, Harri Pollari, Martti Taimisto, Janne Rosenberg, BaiQin Liang, JinRui Cao
  • Disconnector
    Patent number: D658134
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: April 24, 2012
    Assignee: ABB Oy
    Inventors: Timo Jokiniemi, Harri Pollari, Martti Taimisto, Janne Rosenberg, BaiQin Liang, JinRui Cao