Patents by Inventor Chaojian XIE

Chaojian XIE 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).

  • Device for measuring speed of tennis ball
    Patent number: 11266895
    Abstract: Disclosed is a device for measuring speed of a tennis ball, which includes: a housing, a power supply, a main control device, a sensor device, a transmission device, a clamping device and a limiting device. The clamping device is clamped at the serve opening of a tennis ball machine, which can detect the serve speed of a tennis ball accurately with simple operation. The transmission device is engaged with the second sensor device, and the housing is slidably connected with the second sensor device. The emitting ends of the second sensor device and the first sensor device are positioned in the same vertical plane. The limiting device is connected with the second sensor device to limit excessive operation of the transmission device.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: March 8, 2022
    Assignee: Wuyi University
    Inventors: Tianlei Wang, Na Xiao, Yijia Deng, Junjie Xu, Zijian Li, Jingling Zhang, Yikui Zhai, Jiangyuan Chen, Chaojian Xie, Yiren Long
  • DEVICE FOR MEASURING SPEED OF TENNIS BALL
    Publication number: 20210008431
    Abstract: Disclosed is a device for measuring speed of a tennis ball, which includes: a housing, a power supply, a main control device, a sensor device, a transmission device, a clamping device and a limiting device. The clamping device is clamped at the serve opening of a tennis ball machine, which can detect the serve speed of a tennis ball accurately with simple operation. The transmission device is engaged with the second sensor device, and the housing is slidably connected with the second sensor device. The emitting ends of the second sensor device and the first sensor device are positioned in the same vertical plane. The limiting device is connected with the second sensor device to limit excessive operation of the transmission device.
    Type: Application
    Filed: July 23, 2020
    Publication date: January 14, 2021
    Inventors: Tianlei WANG, Na XIAO, Yijia DENG, Junjie XU, Zijian LI, Jingling ZHANG, Yikui ZHAI, Jiangyuan CHEN, Chaojian XIE, Yiren LONG