Patents by Inventor Jyun-Hua Chiang

Jyun-Hua Chiang 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).

  • Cutter head with cutting members that rotate relative to each other
    Patent number: 6003953
    Abstract: A cutter head comprising a plurality of coaxially disposed transmission shafts including a central transmission shaft and at least two tubular transmission shafts with each shaft having a cutting member, the shafts being driven independently with one another and any two radially adjacent shafts being driven to rotate in opposite directions, wherein diameters of the shafts are determined in such a manner that a sum of cutting areas covered by the cutting members of the shafts rotating in one direction is substantially equal to a sum of the cutting areas covered by cutting members of the shafts rotating in the opposite direction.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: December 21, 1999
    Inventors: Chia-Hsiung Huang, Jyun-Hua Chiang