Patents by Inventor Zejun ZHU

Zejun ZHU 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).

  • Oil pumping unit
    Patent number: 8746093
    Abstract: A crank-type non-beam pumping unit, including a belt, a foundation, a crown sheave, a frame, a support rod, a belt pulley, a pin shaft, a crank, a transmission shaft, and a bracket. The bottom of the frame is disposed on the foundation, and the top of the frame is supported by the support rod. The top of the support rod is hinge connected to the frame, and the bottom of the support rod is hinge connected to the foundation. The bracket is disposed on the foundation, the transmission shaft is disposed on the bracket, and the crank is disposed on the transmission shaft. The crank rotates synchronously with the transmission shaft, and the belt pulley is disposed on one end of the crank via the pin shaft. One end of the belt bypasses the crown sheave, and is connected to a smooth sucker rod.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: June 10, 2014
    Assignees: China Petroleum & Chemical Corporation, Oil Production Technology Research Institute of Shengli Oilfield Branch of China Petroleum Chemical Corporation
    Inventors: Minxuan Wang, Jianli Xu, Zhengquan Cheng, Bin Wei, Zhonghui Zhang, Bingsheng Liu, Guangqi Gao, Yan Luo, Zejun Zhu
  • OIL PUMPING UNIT
    Publication number: 20110318199
    Abstract: A crank-type non-beam pumping unit, including a belt, a foundation, a crown sheave, a frame, a support rod, a belt pulley, a pin shaft, a crank, a transmission shaft, and a bracket. The bottom of the frame is disposed on the foundation, and the top of the frame is supported by the support rod. The top of the support rod is hinge connected to the frame, and the bottom of the support rod is hinge connected to the foundation. The bracket is disposed on the foundation, the transmission shaft is disposed on the bracket, and the crank is disposed on the transmission shaft. The crank rotates synchronously with the transmission shaft, and the belt pulley is disposed on one end of the crank via the pin shaft. One end of the belt bypasses the crown sheave, and is connected to a smooth sucker rod.
    Type: Application
    Filed: June 29, 2011
    Publication date: December 29, 2011
    Inventors: Minxuan WANG, Jianli XU, Zhengquan CHENG, Bin WEI, Zhonghui ZHANG, Bingsheng LIU, Guangqi GAO, Yan LUO, Zejun ZHU