Patents Assigned to Tungk Yung International Limited
  • Low-effort, two-stage stapler
    Patent number: 8079505
    Abstract: A stapler comprises an upper assembly for driving a staple through a stack of papers to be bound, and a lower assembly with a staple anvil for clinching the staples only after the staples are completely driven through the papers. The staple anvil is kept clear of the effort to drive in the staples by a risen table that is allowed to drop around the staple anvil in a second stage of operation. The upper assembly and a handle for the user are provided that are arranged to give the user a 2:1 mechanical advantage with a lever arrangement.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: December 20, 2011
    Assignee: Tungk Yung International Limited
    Inventor: Chan Siu Leung