Patents by Inventor Chang-Sung Wang

Chang-Sung Wang 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).

  • FAN BLADE DEVICE
    Publication number: 20230023626
    Abstract: A fan blade device includes a plurality of main fan blades and extension fan blades. Each main fan blade includes a main fan blade body arranged obliquely, a plurality of first protrusions, and at least one engaging groove. Each extension fan blade includes an extension fan blade body arranged obliquely and having a top surface that is contiguously flush with a top surface of the main fan blade body of a respective main fan blade, a plurality of second protrusions respectively abutting against the first protrusions of the respective main fan blade, and at least one engaging piece engaging the at least one engaging groove of the respective main fan blade.
    Type: Application
    Filed: February 22, 2022
    Publication date: January 26, 2023
    Inventors: Chang-Sung WANG, Mei-Chih FANG
  • Fan blade device
    Patent number: 11549519
    Abstract: A fan blade device includes a plurality of main fan blades and extension fan blades. Each main fan blade includes a main fan blade body arranged obliquely, a plurality of first protrusions, and at least one engaging groove. Each extension fan blade includes an extension fan blade body arranged obliquely and having a top surface that is contiguously flush with a top surface of the main fan blade body of a respective main fan blade, a plurality of second protrusions respectively abutting against the first protrusions of the respective main fan blade, and at least one engaging piece engaging the at least one engaging groove of the respective main fan blade.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: January 10, 2023
    Assignee: YEN SUN TECHNOLOGY CORP.
    Inventors: Chang-Sung Wang, Mei-Chih Fang