Patents Assigned to Chang-Hsing Yeh
  • Patent number: 6116746
    Abstract: A tool includes a handle having a driving stem for driving a fastener and having a chamber for receiving one or more batteries. A light bulb is received in the handle. A cover is secured to the handle for blocking the chamber. The cover includes an orifice for allowing a light generated by the light bulb to emit outward of the handle. A cap is pivotally coupled to the cover for selectively enclosing the orifice. The cap includes a conductor selectively actuated to engage with the light bulb when the cap is opened. The conductor may be disengaged from the light bulb when the cap is closed.
    Type: Grant
    Filed: October 19, 1998
    Date of Patent: September 12, 2000
    Assignee: Chang-Hsing Yeh
    Inventor: Gin Tzou Hsu