Patents by Inventor Jiang Feng FU

Jiang Feng FU 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 returning valve set with multi-stage throttling control
    Patent number: 11460119
    Abstract: An oil returning valve set with multi-stage throttling control includes an oil returning channel implemented in oil in an oil hydraulic equipment. The two ends of the oil returning channel are connected to a pressurized oil collecting cavity and a pressurized oil discharging cavity respectively. A plurality of throttling valve plugs and oil returning valve plug are arranged in the oil returning channel, and a normally-open draining gap is also formed among the plurality of throttling valve plugs. When the oil returning valve plug is opened, a plurality of the throttling valve plugs are arranged in series to generate multi-stage throttling oil hydraulic draining control, which improves the problem that the valve opening allowance of the throttling valve for oil returning and pressure relief of traditional oil hydraulic equipment is not sufficient.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: October 4, 2022
    Assignee: SHINN FU CORPORATION
    Inventors: Jiang Feng Fu, Neng Hua Li
  • OIL RETURNING VALVE SET WITH MULTI-STAGE THROTTLING CONTROL
    Publication number: 20210131456
    Abstract: An oil returning valve set with multi-stage throttling control includes an oil returning channel implemented in oil in an oil hydraulic equipment. The two ends of the oil returning channel are connected to a pressurized oil collecting cavity and a pressurized oil discharging cavity respectively. A plurality of throttling valve plugs and oil returning valve plug are arranged in the oil returning channel, and a normally-open draining gap is also formed among the plurality of throttling valve plugs. When the oil returning valve plug is opened, a plurality of the throttling valve plugs are arranged in series to generate multi-stage throttling oil hydraulic draining control, which improves the problem that the valve opening allowance of the throttling valve for oil returning and pressure relief of traditional oil hydraulic equipment is not sufficient.
    Type: Application
    Filed: December 12, 2019
    Publication date: May 6, 2021
    Inventors: Jiang Feng FU, Neng Hua LI