Patents by Inventor Chuanzhen HAN

Chuanzhen HAN 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).

  • Bullet with negative Poisson's ratio effect and method of designing thereof
    Patent number: 11578959
    Abstract: The present invention discloses a bullet with a negative Poisson's ratio effect and a method of designing thereof. The bullet includes a cylindrical section of the bullet having a negative Poisson's ratio design, and a conical tail of the bullet and a tip of the bullet each with a matching design; the cylindrical section of the bullet is a tubular structure having periodically alternating transverse and vertical holes; the tubular structure includes a plurality of holes, with a center axis of one hole being axially perpendicular to a center axis of another adjacent hole, that is, the axis of each hole being structurally orthogonal to an adjacent hole; and the holes in rows and columns are periodically arranged into the tubular structure, which is a tubular structure having the negative Poisson's ratio effect.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: February 14, 2023
    Assignee: NANJING TECH UNIVERSITY
    Inventors: Xin Ren, Chuanzhen Han, Shilong Wang, Xiangyu Zhang
  • BULLET WITH NEGATIVE POISSON'S RATIO EFFECT AND METHOD OF DESIGNING THEREOF
    Publication number: 20210231422
    Abstract: The present invention discloses a bullet with a negative Poisson's ratio effect and a method of designing thereof. The bullet includes a cylindrical section of the bullet having a negative Poisson's ratio design, and a conical tail of the bullet and a tip of the bullet each with a matching design; the cylindrical section of the bullet is a tubular structure having periodically alternating transverse and vertical holes; the tubular structure includes a plurality of holes, with a center axis of one hole being axially perpendicular to a center axis of another adjacent hole, that is, the axis of each hole being structurally orthogonal to an adjacent hole; and the holes in rows and columns are periodically arranged into the tubular structure, which is a tubular structure having the negative Poisson's ratio effect.
    Type: Application
    Filed: January 10, 2019
    Publication date: July 29, 2021
    Applicant: NANJING TECH UNIVERSITY
    Inventors: Xin REN, Chuanzhen HAN, SHILONG WANG, Xiangyu ZHANG