Patents by Inventor Juan-Hsin Lu

Juan-Hsin Lu 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).

  • Patent number: 7278751
    Abstract: A screwdriver includes a handle including a receptacle for coupling with an end of a bit. A front groove and a rear groove are respectively defined in a front end and a rear end of the handle. A plurality of light-emitting diodes are mounted on a circuit board in the front groove of the handle. A transparent cover is mounted in the front groove and in front of the light-emitting diodes. A front cap is mounted to the front end of the handle. A cell and a switch are mounted in the rear groove. A rear cap is mounted to the rear end of the handle. The switch, the cell, the circuit board, and the light-emitting diodes are electrically connected. The light-emitting diodes forwardly emit light beams passing through the transparent cover to provide illumination when required.
    Type: Grant
    Filed: July 5, 2005
    Date of Patent: October 9, 2007
    Inventors: Shih-Chieh Chang, Juan-Hsin Lu
  • Publication number: 20070008715
    Abstract: A screwdriver includes a handle including a receptacle for coupling with an end of a bit. A front groove and a rear groove are respectively defined in a front end and a rear end of the handle. A plurality of light-emitting diodes are mounted on a circuit board in the front groove of the handle. A transparent cover is mounted in the front groove and in front of the light-emitting diodes. A front cap is mounted to the front end of the handle. A cell and a switch are mounted in the rear groove. A rear cap is mounted to the rear end of the handle. The switch, the cell, the circuit board, and the light-emitting diodes are electrically connected. The light-emitting diodes forwardly emit light beams passing through the transparent cover to provide illumination when required.
    Type: Application
    Filed: July 5, 2005
    Publication date: January 11, 2007
    Inventors: Shih-Chieh Chang, Juan-Hsin Lu