Patents by Inventor Yunfa Cao

Yunfa Cao 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: 10195809
    Abstract: The press-fit device includes a platform having an upper surface provided with a bearing base; a mounting rack disposed at the upper surface of the platform; a power cylinder mounted at the mounting rack, including a piston chamber, a piston rod and an actuating element intercommunicated with the piston chamber to provide pressure medium, wherein the piston rod is perpendicular to the bearing base; a guiding track disposed at the upper surface of the platform and arranged in parallel to the piston rod; and a press-fit plate disposed at one end of the cylinder rod and slidably sheathed on the guiding track, wherein a surface of the press-fit plate facing the bearing base is provided with a pressure base, and a surface of the pressure base facing the bearing base is provided with a press-fit frame and a pressure sensing device which is configured to detect a press-fit pressure.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: February 5, 2019
    Assignees: BOE Technology Group Co., Ltd., Hefei BOE Optoelectronics Technology Co., Ltd.
    Inventors: Yunfa Cao, Bochao Jia, Yi Zhang, Pengjun Fang, Erpeng Wang, Guiyang Liu
  • Patent number: 9943877
    Abstract: A dispelling pen including a pen case and a pen head connected with the pen case, wherein at least one accommodation cavity for storing a dispelling solution is disposed in the pen case. The accommodation cavity is connected with the pen head via a pipeline. A switch control valve is disposed on the pipeline. The dispelling pen need not frequently dip in the dispelling solution, thereby avoiding fragmentation and circuit scratch due to the dispelling pen's repeated contact with the substrate while increasing convenience significantly, and increasing the security of the substrate at the time of dispelling.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: April 17, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yu Zhou, Chao Qian, Lei Jin, Xuan Cheng, Yunfa Cao
  • Publication number: 20160313581
    Abstract: The press-fit device includes a platform having an upper surface provided with a bearing base; a mounting rack disposed at the upper surface of the platform; a power cylinder mounted at the mounting rack, including a piston chamber, a piston rod and an actuating element intercommunicated with the piston chamber to provide pressure medium, wherein the piston rod is perpendicular to the bearing base; a guiding track disposed at the upper surface of the platform and arranged in parallel to the piston rod; and a press-fit plate disposed at one end of the cylinder rod and slidably sheathed on the guiding track, wherein a surface of the press-fit plate facing the bearing base is provided with a pressure base, and a surface of the pressure base facing the bearing base is provided with a press-fit frame and a pressure sensing device which is configured to detect a press-fit pressure.
    Type: Application
    Filed: April 21, 2016
    Publication date: October 27, 2016
    Inventors: Yunfa Cao, Bochao Jia, Yi Zhang, Pengjun Fang, Erpeng Wang, Guiyang Liu
  • Publication number: 20160129471
    Abstract: The disclosure relates to a dispelling pen. The dispelling pen comprises a pen case and a pen head connected with the pen case, wherein at least one accommodation cavity for storing a dispelling solution is disposed in the pen case, the accommodation cavity is connected with the pen head via a pipeline, and a switch control valve is disposed on the pipeline. As compared to the prior art, the dispelling pen according to the disclosure need not frequently dip in the dispelling solution, thereby avoiding fragmentation and circuit scratch due to the dispelling pen's repeated contact with the substrate while increasing the convenience significantly, and increasing the security of the substrate at the time of dispelling.
    Type: Application
    Filed: August 6, 2015
    Publication date: May 12, 2016
    Inventors: Yu Zhou, Chao Qian, Lei Jin, Xuan Cheng, Yunfa Cao