Patents by Inventor Wu Teh-Sheng

Wu Teh-Sheng 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).

  • Patent number: 4062635
    Abstract: The invention disclosed relates to a toothbrush which comprises in combination, bristles, guide tube means and a source container from which a viscous substance is forced through apertures disposed near the bristles to the surface thereof. The flow of the viscous substance to the bristles is manually controlled by means of a knob disposed on the outside surface of a main shaft. An extension end of the container is provided to contain the toothbrush bristles and may be configurated as a toothbrush head. An opposite end of the toothbrush head includes a knob which is disposed for advancing a follower member which serves to force the viscous substance to the opening of the aperture which permits the viscous substance to surface to the bristles. At the forward end of the main shaft which contains the follower member, there is disposed a plug which permits closure of the open aperture thereby avoiding danger of leakage of the viscous substance during non-usage periods.
    Type: Grant
    Filed: February 2, 1976
    Date of Patent: December 13, 1977
    Inventor: Wu Teh-Sheng