Patents by Inventor Meili HE

Meili HE 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).

  • Arc-shaped stepped magnetic fluid sealing device
    Patent number: 10962119
    Abstract: An arc-shaped stepped magnetic fluid sealing device comprises a casing, a sealing assembly and an end cover. The sealing assembly comprises a shaft, a permanent magnet, a first pole shoe and a second pole shoe. Inner walls of the first pole shoe and the second pole shoe are both arc-shaped faces inclined towards the side where the permanent magnet is located. A sealed cavity with a larger middle and two smaller ends is enclosed by the inner wall of the first pole shoe, an inner wall of the permanent magnet, and the inner wall of the second pole shoe. A portion of the shaft that is located inside the sealed cavity matches the sealed cavity in shape. Inner walls of the first pole shoe and the second pole shoe are respectively provided with first pole teeth and second pole teeth.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: March 30, 2021
    Inventors: Xiaolong Yang, Decai Li, Fan Chen, Meili He, Peng Sun, Fuxiang Hao
  • ARC-SHAPED STEPPED MAGNETIC FLUID SEALING DEVICE
    Publication number: 20200309270
    Abstract: An arc-shaped stepped magnetic fluid sealing device comprises a casing, a sealing assembly and an end cover. The sealing assembly comprises a shaft, a permanent magnet, a first pole shoe and a second pole shoe. Inner walls of the first pole shoe and the second pole shoe are both arc-shaped faces inclined towards the side where the permanent magnet is located. A sealed cavity with a larger middle and two smaller ends is enclosed by the inner wall of the first pole shoe, an inner wall of the permanent magnet, and the inner wall of the second pole shoe. A portion of the shaft that is located inside the sealed cavity matches the sealed cavity in shape. Inner walls of the first pole shoe and the second pole shoe are respectively provided with first pole teeth and second pole teeth.
    Type: Application
    Filed: June 12, 2020
    Publication date: October 1, 2020
    Inventors: Xiaolong YANG, Decai LI, Fan CHEN, Meili HE, Peng SUN, Fuxiang HAO