Patents by Inventor Rongxuan Liu

Rongxuan Liu 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: 7817775
    Abstract: Disclosed is an inspection system for inspecting a cargo by using radiation, comprising: a main plate conveyor; a radiation scanning unit that spans said main plate conveyor and is provided above said main plate conveyor, for scanning the cargo provided on the main plate conveyor; auxiliary conveyors that are provided at the front end and rear end of said main plate conveyor, respectively, so as to load the cargo to be inspected onto said main plate conveyor and to unload the inspected cargo from said main plate conveyor; and lifting devices for lifting said auxiliary conveyors. The inspection system according to the present invention occupies less area, has simple corollary equipments, a lower operating cost, and excellent compatibility, and can be widely applied.
    Type: Grant
    Filed: January 8, 2007
    Date of Patent: October 19, 2010
    Assignees: Tsinghua University, Nuctech Company Limited
    Inventors: Kejun Kang, Haifeng Hu, Zhiqiang Chen, Shangmin Sun, Guang Yang, Fengjun Zhang, Yong Bi, Yucheng Wu, Jianjun Li, Rongxuan Liu
  • Publication number: 20080197279
    Abstract: Disclosed is an inspection system for inspecting a cargo by using radiation, comprising: a main plate conveyor; a radiation scanning unit that spans said main plate conveyor and is provided above said main plate conveyor, for scanning the cargo provided on the main plate conveyor; auxiliary conveyors that are provided at the front end and rear end of said main plate conveyor, respectively, so as to load the cargo to be inspected onto said main plate conveyor and to unload the inspected cargo from said main plate conveyor; and lifting devices for lifting said auxiliary conveyors. The inspection system according to the present invention occupies less area, has simple corollary equipments, a lower operating cost, and excellent compatibility, and can be widely applied.
    Type: Application
    Filed: January 8, 2007
    Publication date: August 21, 2008
    Inventors: Kejun Kang, Halfeng Hu, Zhiqiang Chen, Shangmin Sun, Guang Yang, Fengjun Zhang, Yong Bi, Yucheng Wu, Jianjun Li, Rongxuan Liu
  • Patent number: 7352843
    Abstract: A combined mobile container inspection system, comprising: a radiation source; a chassis; a rotatable deck provided at an end of the upper surface of said chassis and rotatable with respect to said chassis, provided with a parallelogram bracket formed by a hingedly-connected four-bar linkage mechanism, wherein the cross link of the parallelogram bracket extends to form a horizontal cross arm with detectors, the other end of said horizontal cross arm is connected with a vertical upright arm, which is vertical or parallel to said horizontal cross arm; and a sliding deck provided at the rear end of the rotatable deck and movable upwardly and downwardly, said sliding deck is provided, in turn, with the radiation source, the X-ray therefrom is always right in the face of the detectors provided in the horizontal cross arm and vertical upright arm, calibrator and collimator.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: April 1, 2008
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Haifeng Hu, Yucheng Wu, Shangmin Sun, Zhiqiang Chen, Guang Yang, Zhengyu Bai, Rongxuan Liu, Hongliang Yang, Jianjun Su, Jiantao Wang, Yanjun Han, Bin Hu, Quanwei Song, Nan Jiang, Hua Peng, Jianmin Li, Wanquan Shen, Zhizhong Liang
  • Publication number: 20070110215
    Abstract: A combined mobile container inspection system, comprising: a radiation source; a chassis; a rotatable deck provided at an end of the upper surface of said chassis and rotatable with respect to said chassis, provided with a parallelogram bracket formed by a hingedly-connected four-bar linkage mechanism, wherein the cross link of the parallelogram bracket extends to form a horizontal cross arm with detectors, the other end of said horizontal cross arm is connected with a vertical upright arm, which is vertical or parallel to said horizontal cross arm; and a sliding deck provided at the rear end of the rotatable deck and movable upwardly and downwardly, said sliding deck is provided, in turn, with the radiation source, the X-ray therefrom is always right in the face of the detectors provided in the horizontal cross arm and vertical upright arm, calibrator and collimator.
    Type: Application
    Filed: December 2, 2004
    Publication date: May 17, 2007
    Applicants: Nuctech Company Limited, Tsinghua University
    Inventors: Haifeng Hu, Yucheng Wu, Shangmin Sun, Zhiqiang Chen, Guang Yang, Zhengyu Bai, Rongxuan Liu, Hongliang Yang, Jianjun Su, Jiantao Wang, Yanjun Han, Bin Hu, Quanwei Song, Nan Jiang, Hua Peng, Jianmin Li, Wanquan Shen, Zhizhong Liang
  • Patent number: 6922461
    Abstract: An inspection system for air cargoes, in which an accelerator, a collimator, and a vertical detector arm are all mounted on the floor; detectors are provided within both the horizontal detector arm and the vertical arm; the accelerator, the collimator, the horizontal detector arm and the vertical detector arm are provided in a same plane; the horizontal detector arm is supported by the upper end of the collimator, the vertical detector arm and the horizontal detector arm are connected to each other and provided in the side opposite to the accelerator; a stable portal-shaped frame is formed by means of the collimator, the horizontal detector arm and the vertical detector arm; the conveying device is located under the horizontal detector arm, being perpendicular to the portal-shaped frame, the collimator is provided between the conveying device and the frame.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: July 26, 2005
    Assignees: Tshinghua University, Nuctech Company Limited
    Inventors: Kejun Kang, Wenhuan Gao, Jianmin Li, Zhiqiang Chen, Yinong Liu, Yuanjing Li, Chuanxiang Tang, Junli Li, Li Zhang, Jianjun Su, Rongxuan Liu
  • Patent number: 6837657
    Abstract: A trailer of an automatically scanning-type radiation inspecting system used for large-sized object, comprising a trailer body provided with a bevel portion at a tail end of a top surface thereof and positioning recesses adaptive to lower portions of front wheels of a vehicle carrying objects to be inspected respectively, a plurality of pairs of guide wheels mounted to a bottom surface of the trailer body and can be supported and run on rails, connection rods provided at front and rear ends of the bottom surface of the trailer body and used for connecting to wire ropes of winches respectively, anchoring hooks provided at front and rear ends of the bottom surface of the trailer body and used for engaging with wedges arranged on the ground, and holding means provided at front and back sides of the positioning recesses and used for holding the front wheels of the vehicle in the positioning recesses during movement of the trailer.
    Type: Grant
    Filed: November 13, 2003
    Date of Patent: January 4, 2005
    Assignees: Nuctech Company Limited, Tsinghua University
    Inventors: Jianmin Li, Wenhuan Gao, Yinong Liu, Jianjun Su, Ning Li, Wanquan Shen, Rongxuan Liu
  • Publication number: 20040213374
    Abstract: An inspection system for air cargoes, in which an accelerator, a collimator, and a vertical detector arm are all mounted on the floor; detectors are provided within both the horizontal detector arm and the vertical arm; the accelerator, the collimator, the horizontal detector arm and the vertical detector arm are provided in a same plane; the horizontal detector arm is supported by the upper end of the collimator, the vertical detector arm and the horizontal detector arm are connected to each other and provided in the side opposite to the accelerator; a stable portal-shaped frame is formed by means of the collimator, the horizontal detector arm and the vertical detector arm; the conveying device is located under the horizontal detector arm, being perpendicular to the portal-shaped frame, the collimator is provided between the conveying device and the frame.
    Type: Application
    Filed: February 10, 2004
    Publication date: October 28, 2004
    Applicants: Tsinghua University, Nuctech Company Limited
    Inventors: Kejun Kang, Wenhuan Gao, Jianmin Li, Zhiqiang Chen, Yinong Liu, Yuanjing Li, Chuanxiang Tang, Junli Li, Li Zhang, Jianjun Su, Rongxuan Liu
  • Publication number: 20040146371
    Abstract: A trailer of an automatically scanning-type radiation inspecting system used for large-sized object, comprising a trailer body provided with a bevel portion at a tail end of a top surface thereof and positioning recesses adaptive to lower portions of front wheels of a vehicle carrying objects to be inspected respectively, a plurality of pairs of guide wheels mounted to a bottom surface of the trailer body and can be supported and run on rails, connection rods provided at front and rear ends of the bottom surface of the trailer body and used for connecting to wire ropes of winches respectively, anchoring hooks provided at front and rear ends of the bottom surface of the trailer body and used for engaging with wedges arranged on the ground, and holding means provided at front and back sides of the positioning recesses and used for holding the front wheels of the vehicle in the positioning recesses during movement of the trailer.
    Type: Application
    Filed: November 13, 2003
    Publication date: July 29, 2004
    Inventors: Jianmin Li, Wenhuan Gao, Yinong Liu, Jianjun Su, Ning Li, Wanquan Shen, Rongxuan Liu