Patents by Inventor Zhengjun Cheng

Zhengjun Cheng 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: 20240131575
    Abstract: A machine and its associated process for upset forging the ends of deformed reinforcement bars are disclosed. The machine includes 2 split clamping dies and an upsetting die, and they are housed in separate casings so that the clamping action is independent from the upsetting die. The clamping dies and the upsetting die form a continuous cavity for accommodating the forging of long bars. The upsetting die has a upsetting cavity with radial closed cross-section, and the whole forging process is performed inside this closed cavity to ensure it's a true closed-die forging process, which results in precise upset diameter with improved roundness of the rebar.
    Type: Application
    Filed: December 8, 2023
    Publication date: April 25, 2024
    Inventors: Chengtao HE, Zhengjun CHENG, Dong WEI, Fengfeng JIANG, Yandong WANG, Manchen LIU
  • Publication number: 20240111340
    Abstract: In a folding mechanism, a first housing seat is rotatably disposed on a first screen support plate, a second housing seat is rotatably disposed on a second screen support plate, and a third screen support plate is movably connected to a base in a support direction of the third screen support plate; the first housing seat is rotatably connected to the base via a first swing arm, the second housing seat is rotatably connected to the base via a second swing arm, the first screen support plate is slidably and rotatably connected to the base via a third swing arm, the second screen support plate is slidably and rotatably connected to the base via a fourth swing arm, a rotation axis of the first swing arm is spaced apart from that of the third swing arm.
    Type: Application
    Filed: December 8, 2023
    Publication date: April 4, 2024
    Applicant: VIVO MOBILE COMMUNICATION CO., LTD.
    Inventors: Zhihao NIU, Zongwen HE, Ximing LIU, Zhengjun LUO, Dongcun CHENG
  • Publication number: 20240094785
    Abstract: A folding mechanism is provided, including a base portion, a first housing seat, a second housing seat, a first screen supporting plate, a second screen supporting plate, and a third screen supporting plate. The first housing seat is rotatably disposed on the first screen supporting plate, the second housing seat is rotatably disposed on the second screen supporting plate, and the third screen supporting plate is movably connected to the base portion in its own support direction. The first housing seat is rotatably connected to the base portion by a first swing arm, the second housing seat is rotatably connected to the base portion by a second swing arm, the first screen supporting plate is slidably and rotatably connected to the base portion by a third swing arm, and the second screen supporting plate is slidably and rotatably connected to the base portion by a fourth swing arm.
    Type: Application
    Filed: November 20, 2023
    Publication date: March 21, 2024
    Applicant: VIVO MOBILE COMMUNICATION CO., LTD.
    Inventors: Dongcun CHENG, Zongwen HE, Zhengjun LUO, Fei DONG, Ximing LIU
  • Patent number: 10952832
    Abstract: The present disclosure relates to the technical field of electric toothbrushes, and in particular to an electric toothbrush motor. The electric toothbrush motor comprises a mounting shell, an end cover, conductors, a rotor assembly and a stator assembly, wherein the rotor assembly and the stator assembly are fixedly arranged in an accommodating cavity of the mounting shell through the end cover. The first magnetic steel sheets are added to the rotor assembly, the second magnetic steel sheets are added to the stator assembly, each first magnetic steel sheet is placed at the middle part of an interval between the two second magnetic steel sheets, and by the above manner, the relative positions of the rotor assembly and the stator assembly are fixed, so that the response speed is increased, the vibration frequency is high, and the service life is prolonged.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: March 23, 2021
    Assignee: Zhongke (Shenzhen) Innovation and Creative Technology Co., Ltd.
    Inventors: Yuanpeng Xie, Zhengjun Cheng, Huiru Zhang, Fengcai Xie, Junyun Xiao
  • Publication number: 20200237492
    Abstract: The present disclosure relates to the technical field of electric toothbrushes, and in particular to an electric toothbrush motor. The electric toothbrush motor comprises a mounting shell, an end cover, conductors, a rotor assembly and a stator assembly, wherein the rotor assembly and the stator assembly are fixedly arranged in an accommodating cavity of the mounting shell through the end cover. The first magnetic steel sheets are added to the rotor assembly, the second magnetic steel sheets are added to the stator assembly, each first magnetic steel sheet is placed at the middle part of an interval between the two second magnetic steel sheets, and by the above manner, the relative positions of the rotor assembly and the stator assembly are fixed, so that the response speed is increased, the vibration frequency is high, and the service life is prolonged.
    Type: Application
    Filed: April 24, 2019
    Publication date: July 30, 2020
    Inventors: Yuanpeng Xie, Zhengjun Cheng, Huiru Zhang, Fengcai Xie, Junyun Xiao