Patents by Inventor Deyi NAN

Deyi NAN 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).

  • Liquid injection type reamer bit
    Patent number: 10914122
    Abstract: The present invention discloses a liquid injection type reamer bit, which comprises a drilling and reaming rod (1), a drilling tool (2) and reaming tools (3). The reamer bit is adopted to perform drilling and reaming operations respectively in a water pressure adjusting manner, has the advantages of simple structure, convenient operation, small volume, light weight, flexible and reliable technology, unified power sources for drilling and reaming, stable reaming, easy recovery of tools, and realization of reaming while drilling, greatly improves the anchoring reliability of anchor bolts, and ensures the safety of workers during underground work.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: February 9, 2021
    Assignee: HENAN POLYTECHNIC UNIVERSITY
    Inventors: Hua Nan, Deyi Nan, Faqiang Su, Bingjian Wang
  • LIQUID INJECTION TYPE REAMER BIT
    Publication number: 20200362641
    Abstract: The present invention discloses a liquid injection type reamer bit, which comprises a drilling and reaming rod (1), a drilling tool (2) and reaming tools (3). The reamer bit is adopted to perform drilling and reaming operations respectively in a water pressure adjusting manner, has the advantages of simple structure, convenient operation, small volume, light weight, flexible and reliable technology, unified power sources for drilling and reaming, stable reaming, easy recovery of tools, and realization of reaming while drilling, greatly improves the anchoring reliability of anchor bolts, and ensures the safety of workers during underground work.
    Type: Application
    Filed: August 4, 2020
    Publication date: November 19, 2020
    Inventors: Hua NAN, Deyi NAN, Faqiang SU, Bingjian WANG