Patents by Inventor Wei-Jhe Chen

Wei-Jhe Chen 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).

  • Bidirectional output mixed hydraulic power system
    Patent number: 9366242
    Abstract: The present invention relates to a bidirectional output mixed hydraulic power system, which includes a hydraulic fluid that stores and contains therein a fluid tank; at least one electrical hydraulic pump connected to the fluid tank to draw in, pressurize, and output the hydraulic fluid; at least one mechanical hydraulic pump connected to the fluid tank to draw in, pressurize, and output the hydraulic fluid; at least two sequence check valves each connected to the electrical hydraulic pump and the mechanical hydraulic pump, each of the sequence check valves being set normally open in a first direction and preventing fluid returning in a second direction; and a dual pressure valve that is connected to the fluid tank and each of the sequence check valves for switching output direction of the hydraulic fluid.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: June 14, 2016
    Assignee: AMTAI MEDICAL EQUIPMENT, INC.
    Inventors: Jyh-Wei Liang, Wei-Li Wu, Chien-Cheng Su, Wei-Jhe Chen
  • Bidirectional Output Mixed Hydraulic Power System
    Publication number: 20160097404
    Abstract: The present invention relates to a bidirectional output mixed hydraulic power system, which includes a hydraulic fluid that stores and contains therein a fluid tank; at least one electrical hydraulic pump connected to the fluid tank to draw in, pressurize, and output the hydraulic fluid; at least one mechanical hydraulic pump connected to the fluid tank to draw in, pressurize, and output the hydraulic fluid; at least two sequence check valves each connected to the electrical hydraulic pump and the mechanical hydraulic pump, each of the sequence check valves being set normally open in a first direction and preventing fluid returning in a second direction; and a dual pressure valve that is connected to the fluid tank and each of the sequence check valves for switching output direction of the hydraulic fluid.
    Type: Application
    Filed: October 6, 2014
    Publication date: April 7, 2016
    Inventors: Jyh-Wei Liang, Wei-Li Wu, Chien-Cheng Su, Wei-Jhe Chen