Patents Assigned to Chuck (Chen-Tsai) Chang
  • Handle structure for adjusting the arm of force of a tool
    Patent number: 6370990
    Abstract: A handle structure for a tool includes a handle body slidably secured on the shank of the tool for adjusting an arm of force of the shank of the tool. The handle structure also includes a retaining device mounted between the handle body and the shank of the tool for retaining the handle body on the shank of the tool, and a restoring device mounted between the handle body and the shank of the tool so that the handle body can slide on the shank of the tool.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: April 16, 2002
    Assignee: Chuck (Chen-Tsai) Chang
    Inventor: Chorng-Jiang Lin