Brush part for electrical toothbrush

US6381795B1 · kind B1 · utility

Inventors

• Raimund Hofmann · Kreuzwertheim, DE
• Jörg Hofmann · Krefeld, DE

Key dates

• Filing date: Nov 2, 1999
• Grant date: May 7, 2002
• Expiry date: Nov 2, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29L2031/425
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

This invention is a brush part for an electrical toothbrush with a housing (40) that can be connected to a handle (30). This housing has a vertical drill hole (49) and a horizontal drill hole (46); an axle (3) that can be connected to a shaft (2) of the handle (30). This axle can be fit into the vertical drill hole (49) such that it is still turnable. A brush head (80) that can be fit into the horizontal drill hole (46) such that it is turnable; Transfer elements (17, 86) to transfer the rotation of the axle (3) onto the brush head (80). The brush head (80) is set in the horizontal drill hole (46) via a lockable sleeve bearing resulting in a corresponding axial fixation, and/or the axle (3) is set in the vertical drill hole (49) via a lockable sleeve bearing (35, 44, 88).