Patents by Inventor Chao-Yi Cheng

Chao-Yi 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).

  • Method of measuring and identifying foot arch type
    Patent number: 8567080
    Abstract: The invention provides a method of measuring and identifying foot arch type according to footprint data. The method includes: obtaining a static standing footprint having a foot contour including lateral and medial contours; obtaining a lateral ball and lateral heel tangent points of the footprint, and a medial ball and a medial heel tangent point of the footprint; obtaining a ball and a heel mid-point; obtaining a foot center axial line and a foot perpendicular bisector; obtaining the length of a foot width Lf as the length of the foot perpendicular bisector, and the width a foot arch La; and calculating a foot type index FTI by dividing the width of the foot arch La by the length of the foot width Lf (FTI=La/Lf), and identifying a foot arch type of the footprint by the foot type index FTI.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: October 29, 2013
    Assignee: Global Action Inc.
    Inventors: Sai-Wei Yang, Keh-Tao Liu, Chao-Yi Cheng
  • METHOD OF MEASURING AND IDENTIFYING FOOT ARCH TYPE
    Publication number: 20120174423
    Abstract: The invention provides a method of measuring and identifying foot arch type according to footprint data. The method includes: obtaining a static standing footprint having a foot contour including lateral and medial contours; obtaining a lateral ball and lateral heel tangent points of the footprint, and a medial ball and a medial heel tangent point of the footprint; obtaining a ball and a heel mid-point; obtaining a foot center axial line and a foot perpendicular bisector; obtaining the length of a foot width Lf as the length of the foot perpendicular bisector, and the width a foot arch La; and calculating a foot type index FTI by dividing the width of the foot arch La by the length of the foot width Lf (FTI=La/Lf), and identifying a foot arch type of the footprint by the foot type index FTI.
    Type: Application
    Filed: December 27, 2011
    Publication date: July 12, 2012
    Applicant: GLOBAL ACTION INC.
    Inventors: Sai-Wei Yang, Keh-Tao Liu, Chao-Yi Cheng