Patents by Inventor Da Chang

Da 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).

  • Publication number: 20260167019
    Abstract: Systems and methods for coordinating propulsion of an e-trailer are provided. The system may comprise the e-trailer. The e-trailer may comprise a battery, a motor configured to propel the e-trailer, and a trailer controller, comprising a processor and a memory. The system may comprise a tow vehicle coupled to the e-trailer and configured to pull the e-trailer, and a sensor configured to determine one or more of a force exerted from the tow vehicle to the e-trailer and a force exerted from the e-trailer to the tow vehicle. The trailer controller may be configured to determine one or more data points associated with the tow vehicle, and adjust a propulsion of the e-trailer, using the motor, based on the one or more data points.
    Type: Application
    Filed: December 12, 2024
    Publication date: June 18, 2026
    Inventors: Eric Kurtz, Shengrong Zhu, Da Chang, Mark Shirley, Kyoung Pyo Ha
  • Publication number: 20250008706
    Abstract: The invention provides an AC/DC conversion device for intelligent green-power operation and maintenance in power transmission and transformation projects, including a cabinet, an assembling panel, an inverter, a driving mechanism and a controller. A door is mounted at the front portion of the cabinet in a fixed and sealed manner, and the assembling panel is fixedly mounted on the back wall of the cabinet inside the cabinet. The assembling panel, the inverter, the driving mechanism and the controller are all provided inside the cabinet, which provides desirable dust-proof effects, preventing the case where the inverter, the driving mechanism and the controller are interfered by the dust, so that this device is suitable for outdoor usage. The driving mechanism and the controller work in coordination, so that the inverter can be switched off in time when it burns out and smokes, thereby substantially reducing the risk of fire hazards.
    Type: Application
    Filed: March 20, 2024
    Publication date: January 2, 2025
    Inventors: Chengjia BAO, Long ZHAO, Ru LIU, Xushan HAN, Yanhong MA, Chen LIANG, Qiang ZHOU, Hailong GUO, Tianyi ZHANG, Wei NIU, Weicheng SHEN, Hui YUAN, Wenyuan BAI, Kequan LIU, Qingzhao HU, Ziqiang GUO, Guohan MA, Da CHANG, Bo WU, Li WANG, Yanhua DOU, Yechang GAO, Qin LIANG, Shuzhen REN
  • Patent number: 12184194
    Abstract: The invention provides an AC/DC conversion device for intelligent green-power operation and maintenance in power transmission and transformation projects, including a cabinet, an assembling panel, an inverter, a driving mechanism and a controller. A door is mounted at the front portion of the cabinet in a fixed and sealed manner, and the assembling panel is fixedly mounted on the back wall of the cabinet inside the cabinet. The assembling panel, the inverter, the driving mechanism and the controller are all provided inside the cabinet, which provides desirable dust-proof effects, preventing the case where the inverter, the driving mechanism and the controller are interfered by the dust, so that this device is suitable for outdoor usage. The driving mechanism and the controller work in coordination, so that the inverter can be switched off in time when it burns out and smokes, thereby substantially reducing the risk of fire hazards.
    Type: Grant
    Filed: March 20, 2024
    Date of Patent: December 31, 2024
    Assignees: STATE GRID GANSU ELECTRIC POWER COMPANY LANZHOU POWER SUPPLY COMPANY, STATE GRID GANSU ELECTRIC POWER RESEARCH INSTITUTE
    Inventors: Chengjia Bao, Long Zhao, Ru Liu, Xushan Han, Yanhong Ma, Chen Liang, Qiang Zhou, Hailong Guo, Tianyi Zhang, Wei Niu, Weicheng Shen, Hui Yuan, Wenyuan Bai, Kequan Liu, Qingzhao Hu, Ziqiang Guo, Guohan Ma, Da Chang, Bo Wu, Li Wang, Yanhua Dou, Yechang Gao, Qin Liang, Shuzhen Ren
  • Publication number: 20080089059
    Abstract: There is multiple ballast and many self-ballast sockets or lamp holders in market to connect the power to rate pin based compact fluorescent lamp. Haven't seen any these products can be easily replaced by user. This innovation is relating to a lamp holder with having an easier replaceable integral ballasted adaptor as combination. The design of the present invention is applicable to use GX10q lamp holder & GX10q lamp based compact fluorescent bare lamp. The purpose and special feature of this GX10q lamp holder combination being applied to fixture which shall use single end pin-based compact fluorescent lamp source, the ballasted adaptor is easy to have replacement, particularly when such design of GX10q combination being adopted in recessed downlight and attachment light kits for ceiling fan, the lamp will not fall to loose and with solid security and convenience accordingly.
    Type: Application
    Filed: December 10, 2007
    Publication date: April 17, 2008
    Inventor: Da Chang