Patents by Inventor Ru Hua Yuan

Ru Hua Yuan 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).

  • Automatic reversing-reposition rocker arm
    Patent number: 8181588
    Abstract: An automatic reversing-reposition rocker arm includes a rocker arm body, and the rocker arm body is a steel box beam. A rocker arm pivoting shaft is attached on a middle of the body. The rocker arm body has a ballast tank, a water inlet, and a water outlet. The ballast tank is located in a back end of the rocker arm body. The water inlet is located in an upper edge of the ballast tank. The water outlet is located in a lower edge of the ballast tank. A left side and a right side of a lengthwise forth end of the rocker arm pivoting shaft match each other, and a plurality of connecting devices are attached on the forth end of the rocker arm body. A plurality of gas-liquid buffers connects with the rocker arm body via the connecting devices.
    Type: Grant
    Filed: October 25, 2009
    Date of Patent: May 22, 2012
    Assignees: China National Offshore Oil Corp., China Offshore Oil Engineering Co., Ltd
    Inventors: Zhi Xia Fan, Ru Hua Yuan, Hui Xu, Tao Geng, Huai Liang Li, Yong Li Li, Qing Ren Shen
  • AUTOMATIC REVERSING-REPOSITION ROCKER ARM
    Publication number: 20110094434
    Abstract: An automatic reversing-reposition rocker arm includes a rocker arm body, and the rocker arm body is a steel box beam. A rocker arm pivoting shaft is attached on a middle of the body. The rocker arm body has a ballast tank, a water inlet, and a water outlet. The ballast tank is located in a back end of the rocker arm body. The water inlet is located in an upper edge of the ballast tank. The water outlet is located in a lower edge of the ballast tank. A left side and a right side of a lengthwise forth end of the rocker arm pivoting shaft match each other, and a plurality of connecting devices are attached on the forth end of the rocker arm body. A plurality of gas-liquid buffers connects with the rocker arm body via the connecting devices.
    Type: Application
    Filed: October 25, 2009
    Publication date: April 28, 2011
    Applicants: CHINA NATIONAL OFFSHORE OIL CORP, CHINA OFFSHORE OIL ENGINEERING CO.,LTD
    Inventors: Zhi Xia Fan, Ru Hua Yuan, Hui Xu, Tao Geng, Huai Liang Li, Yong Li Li, Qing Ren Shen