Patents by Inventor Yuang-Feng HU

Yuang-Feng HU 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: 10354817
    Abstract: The invention discloses a keyboard switch including a base, a cover covering the base to form a cavity, an upper guide core disposed in the cavity and an upper guide core limiting mechanism including a lower guide core elastomer, a lower guide core, a middle guide core spring and a middle guide core sequentially disposed on the base. The upper guide core and the middle guide core are connected through an upper guide core spring. The keyboard switch of the invention provides accuracy of the press-conduction displacement, accurate positioning of the conduction course, and adjustability of the press force, such that the press force becomes more balanced, and the keyboard switch is conducted when the guide core is pressed downwards. Thus, the overall press stability of the keyboard switch is improved.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: July 16, 2019
    Assignees: DONGGUAN CITY KAIHUA ELECTRONICS CO., LTD, SILITEK ELECTRONICS (DONGGUAN) CO., LTD
    Inventors: Chih-Wen Su, Yuang-Feng Hu
  • Publication number: 20180294111
    Abstract: The invention discloses a keyboard switch including a base, a cover covering the base to form a cavity, an upper guide core disposed in the cavity and an upper guide core limiting mechanism including a lower guide core elastomer, a lower guide core, a middle guide core spring and a middle guide core sequentially disposed on the base. The upper guide core and the middle guide core are connected through an upper guide core spring. The keyboard switch of the invention provides accuracy of the press-conduction displacement, accurate positioning of the conduction course, and adjustability of the press force, such that the press force becomes more balanced, and the keyboard switch is conducted when the guide core is pressed downwards. Thus, the overall press stability of the keyboard switch is improved.
    Type: Application
    Filed: April 2, 2018
    Publication date: October 11, 2018
    Inventors: Chih-Wen SU, Yuang-Feng HU