Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1997-12-31
1999-11-23
Graham, Gary K.
Brushing, scrubbing, and general cleaning
Machines
Brushing
A61C 1700, A46B 1302
Patent
active
059876816
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.
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patent: 5421726 (1995-06-01), Okada
patent: 5471695 (1995-12-01), Aiyar
patent: 5590434 (1997-01-01), Imai
patent: 5706542 (1998-01-01), Okada
patent: 5784743 (1998-07-01), Shek
Hahn Matthias
Hofer Klaus
Ruhmkorff Andreas
Graham Gary K.
Rowenta -Werke GmbH
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