Patents by Inventor Lee Fu-Tsai

Lee Fu-Tsai 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).

  • Socket joint for torque wrench
    Patent number: 4272973
    Abstract: This invention relates to a socket joint for a torque wrench comprising a joint body, a clutch pressed by a spring thereof, and a controlling means for positioning and clutching said clutch so as to make the joint body keep in a condition of idle running when the torsion occurred exceeds a predetermined value.
    Type: Grant
    Filed: April 26, 1979
    Date of Patent: June 16, 1981
    Inventor: Lee Fu-Tsai