Patents by Inventor Caifu Yuan

Caifu 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).

  • Pressure compensation valve
    Patent number: 9745724
    Abstract: A pressure compensation valve comprises a valve body, a valve sleeve fixedly mounted on the valve body, and a spool disposed in a valve hole of the valve body and capable of moving. The pressure compensation valve can change the pressure compensation characteristic, that is, the pressure compensation valve can change the difficult degree of the pressurized oil liquid flowing by changing an effective pressure acting surface of the pressure compensation valve The structure is simple, requires low cost, and increases the utilization rate of a product.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: August 29, 2017
    Assignee: JIANGSU HENGLI HYDRAULIC CO., LTD
    Inventors: Liping Wang, Caifu Yuan, Qiang Lu, Zhan Chen, Hongguang Liu
  • PRESSURE COMPENSATION VALVE
    Publication number: 20150354173
    Abstract: A pressure compensation valve comprises a valve body, a valve sleeve fixedly mounted on the valve body, and a spool disposed in a valve hole of the valve body and capable of moving. The pressure compensation valve can change the pressure compensation characteristic, that is, the pressure compensation valve can change the difficult degree of the pressurized oil liquid flowing by changing an effective pressure acting surface of the pressure compensation valve The structure is simple, requires low cost, and increases the utilization rate of a product.
    Type: Application
    Filed: August 5, 2015
    Publication date: December 10, 2015
    Inventors: Liping Wang, Caifu Yuan, Qiang Lu, Zhan Chen, Hongguang Liu