Patents by Inventor Gengwu Li

Gengwu Li 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: 20240179881
    Abstract: A switching power supply structure includes a housing, a base and circuit boards, where the housing and the base enclose a cavity for accommodating the circuit boards, and a first heat dissipation channel is formed at an opening of the cavity; the housing consists of a top plate and two side plates, and a plurality of heat dissipation holes, including polygonal holes, are reserved in the housing in an array form, which forms a second heat dissipation channel. The first and second heat dissipation channels are provided, with the heat dissipation holes of the second heat dissipation channel having polygonal structures, which enlarges the heat dissipation area, achieving simple structure and good heat dissipation effect. Furthermore, due to the structural optimization of the housing and the base, the automation degree of product assembly is improved, thus lowering the cost of materials for the entire power supply housing structure.
    Type: Application
    Filed: February 2, 2024
    Publication date: May 30, 2024
    Applicant: MORNSUN GUANGZHOU SCIENCE & TECHNOLOGY CO., LTD.
    Inventors: Yongxian HUANG, Huayi SHEN, Gengwu LI, Wei LIU, Jie LIU
  • Patent number: 6422611
    Abstract: An expansion joint device (10) used for metal conduits comprises an inlet short tube (1), an outlet short tube (2), and a sleeve (3). Both the opposed inside ends of the two short tubes (1, 2) are in the inside of the sleeve (3) and form a compensating gap (6) between them. A bellows member (7), axially expansible with an external force applying on, is provided in the compensating gap (6) formed between the opposed inside ends of the two short tubes (1, 2). The two ends of the bellows member (7) are respectively connected with the inside ends of the two short tubes (1, 2) in sealed manner. At least one of the two ends of said sleeve (3) is free end with respect to the two short tubes (1, 2).
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: July 23, 2002
    Inventors: Jiesheng Jin, Yushi Zhou, Yuefang Liu, Chicheng Luo, Gengwu Li, Jiajing Pan, Zihan Liao, Xiaohong Li, Xia Li, Youren Rui, Shamen Ou, Jiyao Yang, Xijin Zhao, Zhu Li, Xueqin Li, Jianmin Deng