Patents by Inventor Rong-Shian Liu

Rong-Shian 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).

  • Method of making a single rear fork bicycle frame
    Patent number: 5676780
    Abstract: A composite legal type bicycle frame is disclosed which contains a front frame portion and a rear frame portion. The front frame portion contains a central main and a plurality of legs for connecting the central main with various components of the bicycle, and the rear frame portion contains a rear fork, which consists of a left rear branch and a right rear branch. The left and right rear branches are first cured and glued together at respective abutting surfaces thereof to form an integral rear fork before they are adjoined with the front frame portion, via prepregs and using a cocuring procedure. The left and right rear branches are formed to contain cross-shaped matching protrusion and recess, respectively, on the abutting surfaces thereof, so as to enhance the integrity of the integral rear fork. As a result, a great flexibility of design options can be obtained. For example, the rear fork can be connected to one of the legs but not to the central main.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: October 14, 1997
    Assignee: Industrial Technology Research Institute of Taiwan
    Inventors: Yu-Hsuan Chen, Rong-Shian Liu, Chin-I Lin, Gou-Don Chu
  • Method of forming composite articles using a mandrel assembly
    Patent number: 5645668
    Abstract: A mandrel assembly has a hollow main tube and two annular sleeves, wherein an inner diameter of the two annular sleeves is larger than an outer diameter of the two main tube ends. The two annular sleeves are sleeved respectively on the two main tube ends, which can be easily disengaged from the mandrel assembly when applied with an external force.
    Type: Grant
    Filed: August 2, 1995
    Date of Patent: July 8, 1997
    Assignee: Industrial Technology Research Institute
    Inventors: Chin-I Lin, Chung-Lin Wu, Rong-Shian Liu, Gou-Don Chu
  • Mandrel assembly
    Patent number: 5580416
    Abstract: A mandrel assembly has a hollow main tube and two annular sleeves, wherein an inner diameter of the two annular sleeves is larger than an outer diameter of the two main tube ends. The two annular sleeves are sleeved respectively on the two main tube ends, which can be easily disengaged from the mandrel assembly when applied with an external force.
    Type: Grant
    Filed: January 31, 1995
    Date of Patent: December 3, 1996
    Assignee: Industrial Technology Research Institute
    Inventors: Chin-I Lin, Chung-Lin Wu, Rong-Shian Liu, Gou-Don Chu