Electric toothbrush and brush head for an electric toothbrush

US8813292B2 · kind B2 · utility

Assignee

• The Braun Corporation · DE

Inventors

• Georges Driesen · Neu-Anspach, DE
• Michael Schmid · Bern, CH
• Norbert Schaefer · Frankfurt am Main, DE
• Hansjoerg Reick · Steinbach, DE
• Stefan Schamberg · Oberursel, DE
• Eva Susanne Dominique Thurnay · Frankfurt am Main, DE
• Rory McGarry · Boston, US

Key dates

• Filing date: May 2, 2011
• Grant date: Aug 26, 2014
• Expiry date: May 25, 2032

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A46B9/028
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A brush head for an electric toothbrush is disclosed. The brush head includes a bristle support having mounting means for the movable mounting of the bristle support and a plurality of bristle tufts arranged on the bristle support in at least one outer ring and one middle ring, the middle ring being nested within the outer ring and having a central area. The outer ring includes outer bristle tufts having an elongated tuft cross-section, which outer bristle tufts are mounted on opposing sides of the outer ring. The middle ring includes at least two middle bristle tufts that each have a cross-section that is smaller than the cross-section of the outer bristle tufts and a central area including at least one bristled section that consists of two center bristle tufts having a cross-section larger than the cross-section of the middle bristle tufts. The center bristle tufts each having an elongated, substantially kidney-shaped form that complement each other so that the bristled section of the central area has an approximately circular, oval or elliptical structure.