Patents by Inventor Wan-Chuan Li

Wan-Chuan Li 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).

  • INTERCHANGEABLY MANUAL OR AUTOMATIC RATCHET WRENCH TOOL
    Publication number: 20080271574
    Abstract: The present invention relates to an interchangeably manual or automatic ratchet wrench that the user may couple an electric hand grip having a motor therein to the rear end of a stud member of a handle so as to urge a cartridge to rotate in an electric operation manner, or couple a manual hand grip to the rear end of the stud member of the handle so as to urge the cartridge to rotate in a manual operation manner, such that achieving a multi-purpose operation.
    Type: Application
    Filed: May 4, 2007
    Publication date: November 6, 2008
    Inventors: Shu-Sui Lin, Wan-Chuan Li
  • Interchangeably manual or automatic ratchet wrench tool
    Patent number: 7444902
    Abstract: The present invention relates to an interchangeably manual or automatic ratchet wrench that the user may couple an electric hand grip having a motor therein to the rear end of a stud member of a handle so as to urge a cartridge to rotate in an electric operation manner, or couple a manual hand grip to the rear end of the stud member of the handle so as to urge the cartridge to rotate in a manual operation manner, such that achieving a multi-purpose operation.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: November 4, 2008
    Assignees: A.A.G. Industrial Co., Ltd.
    Inventors: Shu-Sui Lin, Wan-Chuan Li