Patents by Inventor Kuei-Fu Wu

Kuei-Fu Wu 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).

  • Universal bit adapter
    Patent number: 6349948
    Abstract: A universal bit adapter includes: an adapting member clamped in a chuck or spindle of a tool having a shank hole longitudinally formed in the adapting member for inserting a tool bit into the shank hole; a sleeve coupled to a front portion of the adapting member for pivotally mounting a control member in a front portion of the sleeve; and a tension spring resiliently held in the sleeve for tensioning a back portion of the control member for normally biasing the control member to allow an axis of a central hole formed through the control member to be eccentrically inclinedly intersected with a longitudinal axis formed in the shank hole in the adapting member for firmly dogging any shank portion of the tool bit in the central hole in the control member regardless of the positioning of the neck portion as recessed in the shank portion of the tool bit.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: February 26, 2002
    Inventor: Kuei-Fu Wu
  • UNIVERSAL BIT ADAPTER
    Publication number: 20020020974
    Abstract: A universal bit adapter includes: an adapting member clamped in a chuck or spindle of a tool having a shank hole longitudinally formed in the adapting member for inserting a tool bit into the shank hole; a sleeve coupled to a front portion of the adapting member for pivotally mounting a control member in a front portion of the sleeve; and a tension spring resiliently held in the sleeve for tensioning a back portion of the control member for normally biasing the control member to allow an axis of a central hole formed through the control member to be eccentrically inclinedly intersected with a longitudinal axis formed in the shank hole in the adapting member for firmly dogging any shank portion of the tool bit in the central hole in the control member regardless of the positioning of the neck portion as recessed in the shank portion of the tool bit.
    Type: Application
    Filed: April 10, 2001
    Publication date: February 21, 2002
    Inventor: Kuei-Fu Wu