Patents by Inventor Shutuan Liu

Shutuan Liu 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).

  • Publication number: 20250084627
    Abstract: A hidden water tank device includes a water tank and a valve assembly configured to be disposed in the water tank. The valve assembly includes an inlet valve configured to be connected to a water replenishment pipe configured to supply water to a toilet bowl; and a flushing valve including an outlet end. The hidden water tank device also includes a flushing pipe configured to be connected to the toilet bowl and in fluid communication with the water replenishment pipe. The flushing pipe includes a first end of the flushing pipe configured to extend to an outside of the water tank; and a second end configured to be connected to the outlet end of the flushing valve.
    Type: Application
    Filed: September 9, 2024
    Publication date: March 13, 2025
    Inventors: Youpeng Chen, Shutuan Liu, Yunqing Zang
  • Patent number: 12146310
    Abstract: The present application discloses a drain valve, comprising a valve body, a valve seat, and an overflow pipe. The valve seat includes a drainage channel. The overflow pipe includes a blocking element and a flow rate regulator. When the overflow pipe is in a raised state, the blocking element leaves a channel water inlet, the flow rate regulator is partially or completely located above the channel water inlet, and a water flow channel is formed between the flow rate regulator and the channel water inlet. An amount of water entering the drainage channel from the channel water inlet in unit time can be defined by the flow rate regulator, and thus a drainage flow rate can be controlled. If a user needs to change the drainage flow rate, the user only replaces different types of flow rate regulators, without replacing the whole drain valve to save costs.
    Type: Grant
    Filed: May 18, 2022
    Date of Patent: November 19, 2024
    Assignee: Kohler (China) Investment Co. Ltd.
    Inventors: Youpeng Chen, Congxian Huang, Shutuan Liu, Yunqing Zang
  • Publication number: 20230287668
    Abstract: A hidden water tank includes a water tank body, including a water inlet assembly and a pneumatic drainage assembly; and a driving panel detachably connected to the water tank body. The driving panel includes one of a pneumatic driving panel, a mechanical driving panel, or an electric driving panel. The mechanical driving panel and the pneumatic drainage assembly are connected through a first driving conversion module configured to convert a mechanical driving force generated by the mechanical driving panel into a first air pressure-driving force. The electric driving panel and the pneumatic drainage assembly are connected through a second driving conversion module configured to convert an electrical signal generated by the electric driving panel into a second air pressure-driving force.
    Type: Application
    Filed: February 23, 2023
    Publication date: September 14, 2023
    Inventors: Congxian Huang, Shutuan Liu, Youpeng Chen, Yunqing Zang
  • Publication number: 20220381020
    Abstract: The present application discloses a drain valve, comprising a valve body, a valve seat, and an overflow pipe. The valve seat includes a drainage channel. The overflow pipe includes a blocking element and a flow rate regulator. When the overflow pipe is in a raised state, the blocking element leaves a channel water inlet, the flow rate regulator is partially or completely located above the channel water inlet, and a water flow channel is formed between the flow rate regulator and the channel water inlet. An amount of water entering the drainage channel from the channel water inlet in unit time can be defined by the flow rate regulator, and thus a drainage flow rate can be controlled. If a user needs to change the drainage flow rate, the user only replaces different types of flow rate regulators, without replacing the whole drain valve to save costs.
    Type: Application
    Filed: May 18, 2022
    Publication date: December 1, 2022
    Inventors: Youpeng Chen, Congxian Huang, Shutuan Liu, Yunqing Zang