Patents by Inventor Xinghua Tao

Xinghua Tao 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).

  • Power transmission unit of an impactor, a hydraulic jet impactor and the application thereof
    Patent number: 7426965
    Abstract: The invention discloses a fluid-driven impactor, a power transmission mechanism for the impactor and the use of the impactor. In the prior art, the working life of the impactor is short, since a rubber primary seal and an upper fluid-diverging lid for the fluid-driven impactor are both liable to erosion and the efficiency in transmitting power is low due to the complexity of the power transmission mechanism. In order to increase the drilling speed and/or extend the life of the impactor, the side cavity passage is formed in such a way that the inner wall of the outer pipe is isolated from the side cavity passage in a watertight manner without the use of the rubber primary seal. The loss in transmitting power is minimized by integrating the anvil of the power transmission mechanism and the lower joint.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: September 23, 2008
    Assignees: China Petroleum & Chemical Corporation, Exploration & Production Research Institute, Sinopec
    Inventors: Xinghua Tao, Guoqiang Xu, Xutian Hou, Yijin Zeng
  • Power transmission unit of an impactor, a hydraulic jet impactor and the application thereof
    Publication number: 20060011362
    Abstract: The invention discloses a fluid-driven impactor, a power transmission mechanism for the impactor and the use of the impactor. In the prior art, the working life of the impactor is short, since a rubber primary seal and an upper fluid-diverging lid for the fluid-driven impactor are both liable to erosion and the efficiency in transmitting power is low due to the complexity of the power transmission mechanism. In order to increase the drilling speed and/or extend the life of the impactor, the side cavity passage is formed in such a way that the inner wall of the outer pipe is isolated from the side cavity passage in a watertight manner without the use of the rubber primary seal. The loss in transmitting power is minimized by integrating the anvil of the power transmission mechanism and the lower joint.
    Type: Application
    Filed: January 14, 2003
    Publication date: January 19, 2006
    Inventors: Xinghua Tao, Guoqiang Xu, Xutian Hou, Yijin Zeng