Patents by Inventor Zhifa Zhan

Zhifa Zhan 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).

  • SHEAR BOX FOR TESTING CYCLIC SHEAR CHARACTERISTICS OF A ROCK MASS DISCONTINUITY
    Publication number: 20210018413
    Abstract: A shear box for testing cyclic shear characteristics of a rock mass discontinuity includes: an upper shear box including an upper semi-open cavity composed of an upper left side plate, an upper right side plate, an upper front side plate, an upper rear side plate and an upper top plate; and a lower shear box including a lower semi-open cavity composed of a lower left side plate, a lower right side plate, a lower front side plate, a lower rear side plate and a lower bottom plate; the upper shear box includes at least one first adjusting device for adjusting a space size of the upper semi-open cavity; the lower shear box includes at least one second adjusting device for adjusting a space size of the lower semi-open cavity; and the upper shear box and the lower shear box are placed opposite to each other.
    Type: Application
    Filed: March 30, 2020
    Publication date: January 21, 2021
    Applicant: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Bowen ZHENG, Shengwen QI, Songfeng GUO, Xiaolin HUANG, Ning LIANG, Yu ZOU, Zhifa ZHAN, Libo JIANG, Xin WANG
  • Shear box for testing cyclic shear characteristics of a rock mass discontinuity
    Patent number: 10876944
    Abstract: A shear box for testing cyclic shear characteristics of a rock mass discontinuity includes: an upper shear box including an upper semi-open cavity composed of an upper left side plate, an upper right side plate, an upper front side plate, an upper rear side plate and an upper top plate; and a lower shear box including a lower semi-open cavity composed of a lower left side plate, a lower right side plate, a lower front side plate, a lower rear side plate and a lower bottom plate; the upper shear box includes at least one first adjusting device for adjusting a space size of the upper semi-open cavity; the lower shear box includes at least one second adjusting device for adjusting a space size of the lower semi-open cavity; and the upper shear box and the lower shear box are placed opposite to each other.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: December 29, 2020
    Assignee: INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Bowen Zheng, Shengwen Qi, Songfeng Guo, Xiaolin Huang, Ning Liang, Yu Zou, Zhifa Zhan, Libo Jiang, Xin Wang