Patents by Inventor Lin T. Hai

Lin T. Hai 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).

  • Bolt and screw repairing tool
    Patent number: 5224900
    Abstract: A bolt and screw repairing tool comprises mainly a main body, a rotating cutting and pressing body, and a positioning cutting and pressing body. The main body comprises a handle, a protruded portion, and a recessed portion. The protruded portion is provided with a through hole and a threaded hole in communication with the through hole. The threaded hole receives a thumbscrew. The protruded portion further comprises a slot. The recessed portion is provided with a receiving hole. The rotating cutting and pressing body comprises a clamping head having a cutting and pressing plate with a triangular edge attached thereto. The rotating cutting and pressing body is received securely in the receiving hole of the recessed portion of main body by means of a shaft which can be rotated to the left and to the right for an angle of 15 degrees respectively.
    Type: Grant
    Filed: April 28, 1992
    Date of Patent: July 6, 1993
    Inventor: Lin T. Hai