Patents Assigned to Chuang Yi Enterprise Co., Ltd.
  • Ball surface structure
    Publication number: 20070015615
    Abstract: A ball surface structure includes multiple primary bosses each having multiple secondary bosses formed on an outer periphery of the primary boss and arranged in an annular format. Each primary boss has a conical recess defined in the outer periphery of the primary boss so as to increase surface friction with the ground surface.
    Type: Application
    Filed: July 14, 2005
    Publication date: January 18, 2007
    Applicant: Chuang Yi Enterprise Co., Ltd.
    Inventor: Chui-Ching Yang
  • Ball
    Patent number: D516646
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: March 7, 2006
    Assignee: Chuang Yi Enterprise Co., Ltd.
    Inventor: Chui-Ching Yang