Patents by Inventor Hale Liao

Hale 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).

  • Driving mechanism for pneumatic tools
    Patent number: 6527061
    Abstract: A driving mechanism for pneumatic tools includes a casing in which a rotor is received. The rotor has a passage defined therethrough for receiving a shaft therein. A ridge extends from an outer periphery of the rotor and is engaged with a groove defined in an inner periphery of the casing. A surface is defined in an outer periphery of the rotor and engaged with two support surfaces extending from the inner periphery of the casing. Two driving surfaces are defined in an inner periphery of the rotor. The shaft has a protrusion extending from an outer periphery of the shaft and is driven by one of the driving surfaces of the rotor. The rotor is shifted on the two support surfaces to disengage the driving surface from the protrusion when the object is tightened.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: March 4, 2003
    Inventor: Hale Liao
  • DRIVING MECHANISM FOR PNEUMATIC TOOLS
    Publication number: 20030024714
    Abstract: A driving mechanism for pneumatic tools includes a casing in which a rotor is received. The rotor has a passage defined therethrough for receiving a shaft therein. A ridge extends from an outer periphery of the rotor and is engaged with a groove defined in an inner periphery of the casing. A surface is defined in an outer periphery of the rotor and engaged with two support surfaces extending from the inner periphery of the casing. Two driving surfaces are defined in an inner periphery of the rotor. The shaft has a protrusion extending from an outer periphery of the shaft and is driven by one of the driving surfaces of the rotor. The rotor is shifted on the two support surfaces to disengage the driving surface from the protrusion when the object is tightened.
    Type: Application
    Filed: August 6, 2001
    Publication date: February 6, 2003
    Inventor: Hale Liao