Patents by Inventor E-Hsung Cheng

E-Hsung Cheng 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).

  • Bone implant drill
    Patent number: 9730772
    Abstract: A bone implant drill includes a bearing received in a sleeve. A transmission shaft includes a rod extending through the bearing and a transmission member formed on an end of the rod and received in the sleeve. The other end of the rod extends beyond the sleeve. A cutting rod includes a cutter, a coupling member received in the sleeve, and a positioning member between the cutter and the coupling member. The cutter and the coupling member are provided on two ends of the cutting rod respectively. The coupling member includes second teeth releasably engageable with first teeth on a free end of the transmission member. An elastic element is mounted in the sleeve. The elastic element includes a first end mounted around the coupling member and abutting the positioning member. The elastic element further includes a second end mounted around the transmission member and abutting the bearing.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: August 15, 2017
    Assignee: Metal Industries Research & Development Centre
    Inventors: Tung-Lin Tsai, E-Hsung Cheng, Bo-Wei Pan, Pei-Hua Wang
  • Bone Implant Drill
    Publication number: 20160081775
    Abstract: A bone implant drill includes a bearing received in a sleeve. A transmission shaft includes a rod extending through the bearing and a transmission member formed on an end of the rod and received in the sleeve. The other end of the rod extends beyond the sleeve. A cutting rod includes a cutter, a coupling member received in the sleeve, and a positioning member between the cutter and the coupling member. The cutter and the coupling member are provided on two ends of the cutting rod respectively. The coupling member includes second teeth releasably engageable with first teeth on a free end of the transmission member. An elastic element is mounted in the sleeve. The elastic element includes a first end mounted around the coupling member and abutting the positioning member. The elastic element further includes a second end mounted around the transmission member and abutting the bearing.
    Type: Application
    Filed: January 27, 2015
    Publication date: March 24, 2016
    Inventors: Tung-Lin Tsai, E-Hsung Cheng, Bo-Wei Pan, Pei-Hua Wang