Patent · US Expired

Electric toothbrush

US5987681A · kind A · utility

95Cited by

10References

10Claims

0Family size

Assignee

ROWENTA WERKE GMBH · DE

Inventors

Matthias Hahn · Kaiserslautern, DE
Klaus Hofer · Feldkirchen an der Donau, AT
Andreas Ruhmkorff · Dietzenbach, DE

Key dates

Filing date	Dec 31, 1997
Grant date	Nov 23, 1999
Priority date	—
Expiry date	Dec 31, 2017

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61C17/3481
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

An electric toothbrush with a handle, a brush head and a shank which connects the handle to the brush head. A rotary motor is arranged in the handle and drives an unbalanced mass. The unbalanced mass driven by the motor is supported on one side or on both sides in the shank close to the brush head and is driven via an extended drive shaft, preferably an intermediate shaft, by the motor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.