Patents by Inventor Don LeRoy Thatcher

Don LeRoy Thatcher 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: 6192544
    Abstract: Toothbrush having a peripheral cushioning bumper for preventing impact injury to the teeth and gums of a person using it. The bumper consists of a body of resilient material mounted in a peripheral groove in the side edge of the head of the brush. In some disclosed embodiments, the resilient body is a ring that passes through a tunnel at the base of the head, which prevents the ring from being dislodged and lost or swallowed. In one such embodiment, the head of the brush is formed in two sections, and the bumper is an O-ring which is placed in the groove before the two sections are joined together. In another, the ring is molded in place on the brush.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: February 27, 2001
    Inventors: Maxim D. Persidsky, Don LeRoy Thatcher