Patents by Inventor Yangchun DAI

Yangchun DAI 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 back soil disturbance in shield tunnel
    Patent number: 10156139
    Abstract: The present invention relates to an apparatus for soil disturbance at the back of a shield tunnel, wherein: the apparatus is formed by a fitting I and a fitting II connected by means of three bolts that form equal angles; the fitting I is a short circular pipe; an end surface of a fitting end of the fitting I is provided with a water passage; a pipe wall of the pipe is provided with 2-8 water spouts; the fitting II is a long circular pipe whose inner and outer diameters are consistent with those of the fitting I; a fitting end of the fitting II is provided with two O-shaped water stop rings; a pipe wall of the fitting II is provided with three water inlets that form equal angles and are in communication with the water passage of the fitting I.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: December 18, 2018
    Assignee: POWERCHINA HUADONG ENGINEERING CORPORATION LIMITED
    Inventors: Wenhua Chen, Jing Hou, Jie Zhang, Yangchun Dai, Kewei Cui
  • DEVICE FOR BACK SOIL DISTURBANCE IN SHIELD TUNNEL
    Publication number: 20170335687
    Abstract: The present invention relates to an apparatus for soil disturbance at the back of a shield tunnel, wherein: the apparatus is formed by a fitting I and a fitting II connected by means of three bolts that form equal angles; the fitting I is a short circular pipe; an end surface of a fitting end of the fitting I is provided with a water passage; a pipe wall of the pipe is provided with 2-8 water spouts; the fitting II is a long circular pipe whose inner and outer diameters are consistent with those of the fitting I; a fitting end of the fitting II is provided with two O-shaped water stop rings; a pipe wall of the fitting II is provided with three water inlets that form equal angles and are in communication with the water passage of the fitting I.
    Type: Application
    Filed: August 23, 2016
    Publication date: November 23, 2017
    Applicant: POWERCHINA HUADONG ENGINEERING CORPORATION LIMITED
    Inventors: Wenhua CHEN, Jing HOU, Jie ZHANG, Yangchun DAI, Kewei CUI