Patents by Inventor Hongxiang SHU

Hongxiang SHU 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).

  • Piston seal structure for injector
    Patent number: 11434889
    Abstract: A piston-cylinder structure includes a cylinder, an end cap, a tapered portion for extruding dead space, an upper bowl-shaped seal portion, a columnar seal portion, a lower bowl-shaped seal portion and a piston push rod. The upper bowl-shaped seal portion is configured to form sealing between the piston push rod and the cylinder when the piston push rod moves toward the end cap and to remove crystals on an inner wall of the cylinder. The columnar seal portion is configured to enable the piston push rod to be coaxial with the cylinder, and to provide a mechanical support for the piston push rod. The lower bowl-shaped seal portion is configured to provide sealing between the piston push rod and the cylinder and remove the crystals on the inner wall of the cylinder when the piston push rod moves toward the end cap.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: September 6, 2022
    Assignees: BEIJING BEIFEN-RUILI ANALYTICAL INSTRUMENT (GROUP) CO., LTD., MAITUOWEI PRECISION INSTRUMENT MANUFACTURING HEBEI CO., LTD.
    Inventors: Lu Chen, Jiaxiang Deng, Rongbing Tian, Sainan Li, Jinrong Liu, Hongxiang Shu
  • PISTON SEAL STRUCTURE FOR INJECTOR
    Publication number: 20210025378
    Abstract: A piston-cylinder structure includes a cylinder, an end cap, a tapered portion for extruding dead space, an upper bowl-shaped seal portion, a columnar seal portion, a lower bowl-shaped seal portion and a piston push rod. The upper bowl-shaped seal portion is configured to form sealing between the piston push rod and the cylinder when the piston push rod moves toward the end cap and to remove crystals on an inner wall of the cylinder. The columnar seal portion is configured to enable the piston push rod to be coaxial with the cylinder, and to provide a mechanical support for the piston push rod. The lower bowl-shaped seal portion is configured to provide sealing between the piston push rod and the cylinder and remove the crystals on the inner wall of the cylinder when the piston push rod moves toward the end cap.
    Type: Application
    Filed: June 24, 2020
    Publication date: January 28, 2021
    Inventors: Lu CHEN, Jiaxiang DENG, Rongbing TIAN, Sainan LI, Jinrong LIU, Hongxiang SHU