TODAY’S PATENT – SELF – CONTAINED TOOTHBRUSH
The SELF-CONTAINED TOOTHBRUSH was invented by Ben L. Clark (Danville, CA) on the 30th of June 1981 bearing patent number US4275750A.
The present invention provides a practical and efficient form of a self-contained toothbrush. The brush element contains a hollow handle and a brush head integral to one end of the handle. A hollow cap is attached to the handle so that the cap encloses the brush head. A dentifrice container is attached to the base at one end and an opposite end with an opening for dispensing the dentifrice. The container projects from the base so that when the base is attached to the handle the container is positioned within the hollow handle. The outer circumferential dimensions of the container are contoured to match the inner dimensions of the hollow handle to maximize the size of the container and seal the opening of the container when it is enclosed by the handle. All elements of the device have a trapezoidal cross-section. The one such design which cannot reduce size is the brush head. The design of the DentiFrice container inside the handle allows it to carry significant amounts of dentin, making dispensing practical enough. However, due to the small size of the overall device, it can be carried by a person comfortably. Thereby, the novel characteristic of this invention is that it can be carried conveniently by the person.