Patents by Inventor Changfu Qiu

Changfu Qiu 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).

  • Double-layer keg
    Patent number: 10815026
    Abstract: A double-layer keg comprises an outer barrel and an inner barrel made of plastic disposed in the outer barrel. A bottom of the outer barrel is fixed with a base, and a lower portion of the outer barrel has a brace for supporting a bottom periphery of the inner barrel. A spear structure is installed at a barrel opening of the inner barrel, and an upper portion of the inner barrel has a shoulder and a neck disposed around the barrel opening. An inner surface of an upper portion of the outer barrel is pressed against an outer surface of the shoulder and/or the neck of the inner barrel. An expansion space, provided for the bottom of the inner barrel to expand downward, is disposed between a portion of the bottom of the inner barrel located at an inner side of the brace and the base.
    Type: Grant
    Filed: October 13, 2018
    Date of Patent: October 27, 2020
    Assignee: Talos Technology Corporation
    Inventor: Changfu Qiu
  • Double-Layer Keg
    Publication number: 20190375543
    Abstract: A double-layer keg comprises an outer barrel and an inner barrel made of plastic disposed in the outer barrel. A bottom of the outer barrel is fixed with a base, and a lower portion of the outer barrel has a brace for supporting a bottom periphery of the inner barrel. A spear structure is installed at a barrel opening of the inner barrel, and an upper portion of the inner barrel has a shoulder and a neck disposed around the barrel opening. An inner surface of an upper portion of the outer barrel is pressed against an outer surface of the shoulder and/or the neck of the inner barrel. An expansion space, provided for the bottom of the inner barrel to expand downward, is disposed between a portion of the bottom of the inner barrel located at an inner side of the brace and the base.
    Type: Application
    Filed: October 13, 2018
    Publication date: December 12, 2019
    Inventor: Changfu Qiu