Patents by Inventor Longyu JU

Longyu JU 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).

  • Rotor core with different groove and skew angle configuration of step-skewing synchronous motor
    Patent number: 11670996
    Abstract: A rotor core is provided for a step-skewing motor that includes rotor core segments mutually staggered by a preset angle. Each of the rotor core segments includes magnet slots along a circumferential direction, with a magnet provided in the magnet slot. An outer circular surface of each of the rotor core segments is provided thereon with a number of auxiliary grooves extending across the segment in an axial direction, and positions and/or cross-sectional shapes of the auxiliary grooves on the rotor core segments are not completely same so as to suppress torque ripple and vibration noise when the motor rotates.
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: June 6, 2023
    Assignee: Jing-Jin Electric Technologies Co., Ltd
    Inventors: Kaihe Zhang, Liangliang Zhang, Longyu Ju
  • ROTOR CORE OF STEP-SKEWING MOTOR AND PERMANENT MAGNET SYNCHRONOUS MOTOR
    Publication number: 20220021288
    Abstract: A rotor core is provided for a step-skewing motor that includes rotor core segments mutually staggered by a preset angle. Each of the rotor core segments includes magnet slots along a circumferential direction, with a magnet provided in the magnet slot. An outer circular surface of each of the rotor core segments is provided thereon with a number of auxiliary grooves extending across the segment in an axial direction, and positions and/or cross-sectional shapes of the auxiliary grooves on the rotor core segments are not completely same so as to suppress torque ripple and vibration noise when the motor rotates.
    Type: Application
    Filed: July 13, 2021
    Publication date: January 20, 2022
    Inventors: Kaihe ZHANG, Liangliang ZHANG, Longyu JU