Patents by Inventor Yanan CHANG

Yanan CHANG 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).

  • Patent number: 10914544
    Abstract: A control mechanism of a vehicle-mounted system for electromagnetic launch of fire extinguishing bombs for high-rise buildings is provided. A stress wave amplifier is fixedly connected to a secondary coil, a primary coil is fixedly connected to a coil base, a guide shaft passes through a central hole in the primary coil and the coil base, and a head of the guide shaft is fixedly connected to the secondary coil. A step-up transformer TM1 boosts a 380-V alternating current and changes it to direct current to charge a pulse capacitor C1 and store energy in the pulse capacitor C1. A discharge thyristor M3 is triggered, and the pulse capacitor C1 releases the energy instantaneously. A stress wave is generated between the primary coil and the secondary coil. The stress wave is transmitted to a fire extinguishing bomb through the stress wave amplifier, to launch the fire extinguishing bomb.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: February 9, 2021
    Assignees: NORTHWESTERN POLYTECHNICAL UNIVERSITY, SHAANXI DAGONG XUHANG ELECTROMAGNETIC TECHNOLOGY CO., LTD.
    Inventors: Zengqiang Cao, Guo Zheng, Chenglong Dang, Lingfeng Wei, Yanan Chang
  • Publication number: 20200408483
    Abstract: A control mechanism of a vehicle-mounted system for electromagnetic launch of fire extinguishing bombs for high-rise buildings is provided. A stress wave amplifier is fixedly connected to a secondary coil, a primary coil is fixedly connected to a coil base, a guide shaft passes through a central hole in the primary coil and the coil base, and a head of the guide shaft is fixedly connected to the secondary coil. A step-up transformer TM1 boosts a 380-V alternating current and changes it to direct current to charge a pulse capacitor C1 and store energy in the pulse capacitor C1. A discharge thyristor M3 is triggered, and the pulse capacitor C1 releases the energy instantaneously. A stress wave is generated between the primary coil and the secondary coil. The stress wave is transmitted to a fire extinguishing bomb through the stress wave amplifier, to launch the fire extinguishing bomb.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 31, 2020
    Inventors: Zengqiang CAO, Guo ZHENG, Chenglong DANG, Lingfeng WEI, Yanan CHANG