Patents by Inventor Herbert D. Ayers

Herbert D. Ayers 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: 4051571
    Abstract: A toothbrush comprising a brush head and a handle, the brush head carrying three rows of bristle tufts which form a generally T-shaped pattern when viewed from above. A first and second row of tufts extend angularly toward each other and intersect in a plane which runs generally parallel to the longitudinal axis of the brush. A cross row of tufts at the end of the brush head inclines toward the other tufts to from the T-pattern. The handle is specially contoured near the brush head to facilitate movement of the brush over the teeth.
    Type: Grant
    Filed: June 1, 1976
    Date of Patent: October 4, 1977
    Inventor: Herbert D. Ayers