Patents by Inventor Norman F. Huefner

Norman F. Huefner 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).

  • Toothbrush having adjustable brushing pressure
    Patent number: 5315732
    Abstract: A toothbrush construction is described in which a bristle head is made moveable with respect to a handle and contains adjustable springs to permit presetting of the brushing pressure. The springs are so formed as to have a break away feature. The user is thus made aware whenever he exerts more than the preset pressure and can learn to brush at a pressure which permits good cleansing and minimizes brushing damage to his teeth and gingival tissue.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: May 31, 1994
    Inventors: Norman F. Huefner, Frank J. Burrell, Jr.