Patents by Inventor Frank M. Hunter

Frank M. Hunter 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).

  • Electrically driven toothbrush
    Patent number: 4479516
    Abstract: An electrically driven toothbrush comprising a casing (2) for use as a handle which supports an electric motor (10) a motor reversing means (4) and a speed reducing means (26,18); a stem (46) extending from the handle with a brushhead at one end of the stem, the rotary motion of the stem being in use continuous until reversed by manual operation of the motor reversing means (4). Another version has no motor reversing means and has an oscillating brushhead (74) driven by a slotted roller (70) and an eccentric pin (74) on a shaft (78) within the stem (46).
    Type: Grant
    Filed: February 8, 1982
    Date of Patent: October 30, 1984
    Inventor: Frank M. Hunter