Patents by Inventor Dawn Bai

Dawn Bai 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).

  • Tire dismounting tool for large motor vehicles
    Patent number: 5176047
    Abstract: A tire dismounting tool for large motor vehicles has a long cylindrical housing provided with a plurality of main bodies and covers. The interior of the housing is divided into a plurality of receiving spaces, each of which is provided therein with a drive member for imparting torsion and with a planetary gear. The housing is fastened to a support member of a predetermined length. A torsion of substantial magnitude sufficient to loosen the mounted nut of tire of a heavy motor vehicle can be generated by the product of speed ratios of planetary gears.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: January 5, 1993
    Inventors: Dawn Bai, Claude Huang
  • Wheel nut loosening and tightening hand tool
    Patent number: 5125297
    Abstract: A hand tool for use in loosening and tightening the wheel nut comprises a main body, a first cover body, a first shaft bearing, a second cover body, a second shaft bearing, a first drive member, a second drive member, a transmission, and a positioning means. The first cover body and the second cover body serve to accommodate therein respectively a shaft bearing to support the first drive member and the second drive member so as to provide the hand tool with a speeding and torguing advantage. The positioning means consists of a set rod and a support rod, thereby providing the hand tool with to actuate the main body and the second drive member in order to overcome the situation in which a high speeding motion and a low torguing motion take place.
    Type: Grant
    Filed: August 8, 1991
    Date of Patent: June 30, 1992
    Inventors: Dawn Bai, Claude Huang