Brush section for an electric toothbrush

US6021538A · kind A · utility

Assignee

• The Braun Corporation · DE

Inventors

• Gerhard Kressner · Schongau, DE
• Georges Driesen · Neu-Anspach, DE

Key dates

• Filing date: Dec 5, 1997
• Grant date: Feb 8, 2000
• Expiry date: Dec 5, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S15/05
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention is directed to a brush section (24) for an electric toothbrush (20) in which a handle section (22) is connectible with the brush section (24). A bristle carrier (44) of a circular disk shaped configuration is arranged at the end of the brush section (24) remote from the handle section (22) and has on its upper side bristle tufts (46, 60, 62, 72, 74) disposed on one central ring (54) and one outer ring (56). The bristle carrier (44) is mounted on the brush section (24) so as to be rotatable about an axis of rotation (50) in an alternating oscillating fashion from a central position (58). The axis of rotation (50) is aligned at approximately right angles to a longitudinal center line (52) of the brush section (24). In use of the electric toothbrush (20), an improved cleaning action is accomplished in that the outer ring (56) of the bristle carrier (44) is set with tufts (60, 62) of bristles of different lengths.