Patents by Inventor Yung-Cheng Liu

Yung-Cheng 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: 20250146590
    Abstract: An integrated air valve structure includes a main body and two air valves. The main body is formed with two air passages not communicated with each other, a plurality of through holes disposed corresponding to the two air passages, and two valve mounting seats. One valve mounting seat is disposed corresponding to one of the through holes, the other valve mounting seat is disposed corresponding to two of the through holes belonging to the two air passages. The two air valves are disposed on the two valve mounting seats, each air valves includes an air plug facing at least one of the through holes, a valve body assembled with one of the two valve mounting seats for the air plug to move therein, and a coil disposed on the valve body for generating magnetic force to change a position of the air plug.
    Type: Application
    Filed: November 7, 2023
    Publication date: May 8, 2025
    Inventors: Tsun-Hsiang WEN, Chia-Yu YU, Peng ZHAO, Yung-Cheng LIU, Chao-Wen HUANG
  • Patent number: 11499020
    Abstract: In order to solve problems of strength and volume of part, the invention provides an article reinforced by multi-dimensional fibers and a method for manufacturing the article. The article includes a core portion and a shell layer portion. The core portion is made of thermoplastic resin and the fibers in which a majority of and a minority of the fibers are respectively arranged in a major and a minor directions. The method includes: preparing a core portion made of thermoplastic resin and the fibers in which a majority of and a minority of the fibers are respectively arranged in a major and a minor directions, loading the core portion into a mold, and forming a shell layer portion in the mold to enclose the core portion. The article manufactured by the method of this invention can reduce the weight and increase the strength of the parts.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: November 15, 2022
    Assignee: TOPKEY CORPORATION
    Inventors: Liang-Chieh Chan, Yung-Cheng Liu, Jung-Chin Yang
  • Publication number: 20210355288
    Abstract: In order to solve problems of strength and volume of part, the invention provides an article reinforced by multi-dimensional fibers and a method for manufacturing the article. The article includes a core portion and a shell layer portion. The core portion is made of thermoplastic resin and the fibers in which a majority of and a minority of the fibers are respectively arranged in a major and a minor directions. The method includes: preparing a core portion made of thermoplastic resin and the fibers in which a majority of and a minority of the fibers are respectively arranged in a major and a minor directions, loading the core portion into a mold, and forming a shell layer portion in the mold to enclose the core portion. The article manufactured by the method of this invention can reduce the weight and increase the strength of the parts.
    Type: Application
    Filed: May 18, 2020
    Publication date: November 18, 2021
    Inventors: Liang-Chieh CHAN, Yung-Cheng LIU, Jung-Chin YANG
  • Patent number: 8723433
    Abstract: A power transformation apparatus between DC light element and ballast includes a first fluorescent emulation module, a second fluorescent emulation module and a rectifier module; wherein the first fluorescent emulation module includes two input current terminals for electrically connecting to first set of AC output terminals of the ballast, the second fluorescent emulation module also includes two input current terminals for electrically connecting to second set of AC output terminals of the ballast; two input terminals of the rectifier module are electrically connected respectively to any output terminal of first set of AC output terminals and second set of AC output terminals. The rectifier module outputs a rectified DC to supply to the DC light element as a power source.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: May 13, 2014
    Assignees: Geometek Application Engineering Co., Ltd.
    Inventor: Yung-Cheng Liu
  • Publication number: 20140021873
    Abstract: A power transformation apparatus between DC light element and ballast includes a first fluorescent emulation module, a second fluorescent emulation module and a rectifier module; wherein the first fluorescent emulation module includes two input current terminals for electrically connecting to first set of AC output terminals of the ballast, the second fluorescent emulation module also includes two input current terminals for electrically connecting to second set of AC output terminals of the ballast; two input terminals of the rectifier module are electrically connected respectively to any output terminal of first set of AC output terminals and second set of AC output terminals. The rectifier module outputs a rectified DC to supply to the DC light element as a power source.
    Type: Application
    Filed: January 7, 2013
    Publication date: January 23, 2014
    Applicant: GEOMETEK APPLICATION ENGINEERING CO., LTD.
    Inventor: Yung-Cheng Liu