Patents by Inventor I-Ho Liao

I-Ho Liao 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).

  • Ratchet tool without drilling holes in an inside of the tool head
    Patent number: 6615693
    Abstract: A ratchet tool includes a head with a hole and a driving member is rotatably received in the hole. A plurality of teeth are defined in an inside of the hole and a plurality of notches are defined in an outer periphery of the driving member. Each notch has a pawl received therein which is engaged with the teeth. A spring ring is mounted to the pawls and positions and pushes the pawls in the notches.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: September 9, 2003
    Inventor: I-Ho Liao