Patents by Inventor Thomas B. Janssen

Thomas B. Janssen 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: 4428091
    Abstract: The disclosure is directed to a novel and improved toothbrush construction which provides not only effective brushing action on the teeth, but also imparts a gentle yet highly effective massaging action to the gums as well as the dental underpinnings. The brushing head assembly of the new device is arranged for either rotary or nonrotary operation and includes a pair of opposed, generally circular flange-forming members, formed of a soft, closed cell foam material, and central, generally lense-shaped portions of a material of substantially less resilience. These flange-forming members are separated by a central impact cushion, somewhat disc-like in shape and formed of soft foam material. The entire assembly is held under axial compression by a pair of opposed cup-like restrainig hubs.
    Type: Grant
    Filed: December 14, 1981
    Date of Patent: January 31, 1984
    Inventor: Thomas B. Janssen