Brush attachment for an electric toothbrush

US7690067B2 · kind B2 · utility

Assignee

• The Braun Corporation · DE

Inventors

• Norbert Schaefer · Frankfurt am Main, DE
• Erik Eisenkolb · Frankfurt am Main, DE
• Reiner Engelmohr · Egelsbach, DE
• Hansjorg Reick · Steinbach, DE

Key dates

• Filing date: Nov 9, 2004
• Grant date: Apr 6, 2010
• Expiry date: Jan 15, 2028

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61C17/3481
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention is directed to a brush attachment adapted to be attached to and detached from a shaft of a handle of an electric toothbrush, including a bristle area, a brush shank and a plug-on part disposed in the brush shank, wherein the plug-on part includes a first spring element and a second spring element which act on the shaft when the brush attachment is plugged onto the shaft. This establishes a connection without play between the brush attachment and the shaft, enabling relatively high vibration frequencies to be transmitted.