Patents by Inventor Gui Rong Liu

Gui Rong Liu 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).

  • Sprocket tooth profile
    Patent number: 6958026
    Abstract: An improved tooth profile for a roller chain sprocket enables noise reduction from impact and polygonal action during the meshing process. The profile of the engaging flank consists of three portions which are the seating, impact and distal portions all three of which are arcs with well-defined radii and arc centers. The profile of the disengaging flank is determined in accordance to a modified form of the JIS standard in which the sprocket pitch is smaller than the roller chain pitch. The impact point is located at the tangent point, thus permitting a gradual change of the roller velocity, thereby lessening the impact level and the effects of polygonal action.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: October 25, 2005
    Assignees: Institute of High Performance Computing, Sunstar Logistic Singapore Pte Ltd.
    Inventors: Yu Yong Wang, Gui Rong Liu, Chun Lu, Kwang Peng Quek, Yoshihisa Noguchi
  • Sprocket tooth profile
    Publication number: 20030186766
    Abstract: An improved tooth profile for a roller chain sprocket enables noise reduction from impact and polygonal action during the meshing process. The profile of the engaging flank consists of three portions which are the seating, impact and distal portions all three of which are arcs with well-defined radii and arc centres. The profile of the disengaging flank is determined in accordance to a modified form of the JIS standard in which the sprocket pitch is smaller than the roller chain pitch. The impact point is located at the tangent point, thus permitting a gradual change of the roller velocity, thereby lessening the impact level and the effects of polygonal action.
    Type: Application
    Filed: August 23, 2002
    Publication date: October 2, 2003
    Inventors: Yu Yong Wang, Gui Rong Liu, Chun Lu, Kwang Peng Quek, Yoshihisa Noguchi