Patents by Inventor Jie-Qiong QIN

Jie-Qiong QIN 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).

  • Effective stress cell for direct measurement of effective stress in saturated soil
    Patent number: 11473260
    Abstract: The present disclosure provides an effective stress cell for direct measurement of effective stress in saturated soil. The effective stress cell comprises a sensing diaphragm, a porous diaphragm, a connector and a strain sensor. The porous diaphragm allows pore-water to enter the interior space between the sensing diaphragm and the porous diaphragm to provide complete balance of pore-water pressures in the front and back of the sensing diaphragm. Thus, the effective stress cell can directly and accurately measure the effective stress in saturated soil using only one diaphragm at one location without measuring pore-water pressure.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: October 18, 2022
    Assignee: THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventors: Jian-Hua Yin, Jie-Qiong Qin, Wei-Qiang Feng
  • EFFECTIVE STRESS CELL FOR DIRECT MEASUREMENT OF EFFECTIVE STRESS IN SATURATED SOIL
    Publication number: 20200181864
    Abstract: The present disclosure provides an effective stress cell for direct measurement of effective stress in saturated soil. The effective stress cell comprises a sensing diaphragm, a porous diaphragm, a connector and a strain sensor. The porous diaphragm allows pore-water to enter the interior space between the sensing diaphragm and the porous diaphragm to provide complete balance of pore-water pressures in the front and back of the sensing diaphragm. Thus, the effective stress cell can directly and accurately measure the effective stress in saturated soil using only one diaphragm at one location without measuring pore-water pressure.
    Type: Application
    Filed: November 20, 2019
    Publication date: June 11, 2020
    Inventors: Jian-Hua YIN, Jie-Qiong QIN, Wei-Qiang FENG