Patents by Inventor Hyong Doo Jang

Hyong Doo Jang 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).

  • Coupling device for explosives
    Patent number: 8770108
    Abstract: A coupling device which is configured such that respective explosives for blasting work are coupled to front and rear sections thereof. The coupling device includes cylindrical bodies, one of the bodies being movable away from or close to another one of the bodies, a partition provided inside a predetermined one of the bodies to divide an inner space of the predetermined body, and an expandable support section provided between the bodies to connect the bodies to each other. The expandable support section forms a cylindrical shape together with the bodies when one body is moved away from the other body and is radially expanded when one body is moved close to the other body. The explosives can be easily inserted into a blasting hole and be positioned in the center of the blasting hole, thereby increasing the efficiency of blasting work.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: July 8, 2014
    Assignee: Industry Foundation of Chonnam National University
    Inventors: Hyung Sik Yang, Jeong Gyu Kim, Hyong Doo Jang, Won Beom Kim
  • COUPLING DEVICE FOR EXPLOSIVES
    Publication number: 20120325103
    Abstract: A coupling device which is configured such that respective explosives for blasting work are coupled to front and rear sections thereof. The coupling device includes cylindrical bodies, one of the bodies being movable away from or close to another one of the bodies, a partition provided inside a predetermined one of the bodies to divide an inner space of the predetermined body, and an expandable support section provided between the bodies to connect the bodies to each other. The expandable support section forms a cylindrical shape together with the bodies when one body is moved away from the other body and is radially expanded when one body is moved close to the other body. The explosives can be easily inserted into a blasting hole and be positioned in the center of the blasting hole, thereby increasing the efficiency of blasting work.
    Type: Application
    Filed: June 22, 2012
    Publication date: December 27, 2012
    Applicant: INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY
    Inventors: Hyung Sik Yang, Jeong Gyu Kim, Hyong Doo Jang, Won Beom Kim