Patents by Inventor Minjian GAO

Minjian GAO 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: 9724711
    Abstract: The invention provides a powder conveying device including: a pump body (1), a powder sucking plunger (4), a powder suction conduit (2), a powder discharge conduit (3), a powder suction valve (5), and a powder discharge valve (6), wherein the pump body (1) comprising a transfer chamber (13) that is configured with a powder inlet (11) connected to the powder suction conduit (2) and a powder outlet (12) connected the powder discharge conduit (3); and a powder sucking plunger (4) configured in the upper part of the transfer chamber (13) and movable up and down inside the transfer chamber (13). When the powder sucking plunger (4) moves upward, the powder suction conduit (2) is opened by the powder suction valve (5) and the powder discharge conduit (3) is closed by the powder discharge valve (6) so that the powder is sucked into the transfer chamber (13) through the powder suction conduit (2).
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: August 8, 2017
    Assignee: YU TUNG INVESTMENT HOLDINGS LIMITED
    Inventors: Minjian Gao, Ruqun Ke
  • Publication number: 20150343465
    Abstract: The invention provides a powder conveying device including: a pump body (1), a powder sucking plunger (4), a powder suction conduit (2), a powder discharge conduit (3), a powder suction valve (5), and a powder discharge valve (6), wherein the pump body (1) comprising a transfer chamber (13) that is configured with a powder inlet (11) connected to the powder suction conduit (2) and a powder outlet (12) connected the powder discharge conduit (3); and a powder sucking plunger (4) configured in the upper part of the transfer chamber (13) and movable up and down inside the transfer chamber (13). When the powder sucking plunger (4) moves upward, the powder suction conduit (2) is opened by the powder suction valve (5) and the powder discharge conduit (3) is closed by the powder discharge valve (6) so that the powder is sucked into the transfer chamber (13) through the powder suction conduit (2).
    Type: Application
    Filed: August 31, 2012
    Publication date: December 3, 2015
    Inventors: Minjian GAO, Ruqun KE