Brush head for an electric toothbrush
AssigneeBrushpoint Innovations Inc
InventorsRobert G. Dickie, Shahram Nabavi
Life of this patent
Estimating the term…
Abstract
A brush head for an electric toothbrush having a support structure rotatably oscillated by a motor in the handle of the toothbrush. A plurality of bristle tufts are mounted on the support structure in three ring-like series concentrically about a center point of the support structure. The bristle tufts are arranged in a unique arrangement whereby no more than two of the bristle tufts in the intermediate series and innermost series lie on a diameter line passing through the center point. The outermost and intermediate series of bristle tufts may be arranged in oval-shaped rings and the bristle tufts of the inner series may have a circular arrangement. All of the tufts preferably have the same height and diameter.
Claims23
A brush head of a power-driven toothbrush comprising:
- a support structure;
- a plurality of bristle tufts attached to the support structure and extending upwardly therefrom, said plurality of bristle tufts including:
- a first series of bristle tufts forming an outer ring of bristle tufts;
- a second series of bristle tufts forming an intermediate ring of bristle tufts;
- a third series of bristle tufts forming an inner ring of bristle tufts;
- wherein said first, second and third series of bristle tufts are located generally concentrically with respect to each other and about a center point of the brush head;
- and wherein never more than two of the bristle tufts of the second and third series lie on any diameter line passing through the center point of the brush head.
A toothbrush comprising:
- a handpiece;
- a motor within the handpiece;
- a brush head having a center point;
- a plurality of bristle tufts mounted on and projecting upwardly from the brush head;
- said plurality of bristle tufts including:
- a first series of bristle tufts located on an outer ring of bristle tufts;
- a second series of bristle tufts located on an intermediate ring of bristle tufts;
- a third series of bristle tufts located on an inner ring of bristle tufts;
- said first, second, and third series of bristle tufts located generally concentrically with respect to each other and about the center point of the brush head;
- and
- wherein any diameter line passing through a bristle tuft of the outer ring of bristle tufts and a bristle tuft of the inner ring of bristle tufts is free of contact with a bristle tuft of the intermediate ring of bristle tufts.
Dependencies are inferred from the claim text.